Toshiba 62373831 Density Meter User Manual 6F8A0521 LQ500 030910

Toshiba Corporation Density Meter 6F8A0521 LQ500 030910

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User Manual

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OPERATION MANUAL

DENSITY METER

TYPE LQ500

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INTRODUCTION

Thank you very much for your purchase of the LQ500 Density Meter (Hereafter, LQ500).

This manual is prepared for people in charge of installation, operation or maintenance. The manual

describes the precautions in using the meter, and explains about installing, adjusting, calibrating and

maintaining the LQ500 meter.

Carefully read this manual before using the meter for efficient and safe operation. Always keep the

manual in a place where you can easily access.

◆ About Safety Precautions

Carefully read the Safety Precautions that appear in the following pages before using the Meter.

The safety signs used in the Safety Precautions will appear again in the following sections for your

safety.

■ Notice

1. Do not copy or transcribe this manual in part or entirety without written permission from Toshiba.

2. The manual is subject to change without notice.

3. Although we tried hard to make this manual error free, if you find any errors or unclear passages,

kindly let us know.

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Important information is shown on the product itself and in the operation manual to protect users

from bodily injuries and property damages, and to enable them to use the product safely and

correctly.

Please be sure to thoroughly understand the meanings of the following signs and symbols

before reading the sections that follow, and observe the instructions given herein. Keep the

manual in a place you can easily access to whenever you need it.

[Explanation of Signs]

Sign Description

WARNING

Indicates a potentially hazardous situation which could result in

death or serious injury, if you do not follow the instructions in this

manual.

CAUTION Indicates a potentially hazardous situation which may result in

minor or moderate injury*1, and/or equipment-only-damage*2, if

you do not follow the instruction in this manual.

Note 1: Serious injury refers to cases of loss of eyesight, wounds, burns (high or low temperature),

electric shock, broken bones, poisoning, etc., which leave after-effects or which require

hospitalization or a long period of outpatient treatment of cure.

Note 2: Minor or moderate injury refers to cases of burns, electric shock, etc., which do not require

hospitalization or a long period of outpatient treatment for cure; equipment damage refers

to cases of extensive damage involving damage to property or equipment.

[Explanation of the Symbols]

Symbol Description

This sign indicates PROHIBITION (Do not).

The content of prohibition is shown by a picture or words beside the

symbol.

This sign indicates MANDATORY ACTION (You are required to do).

The content of action is shown by a picture or words beside the symbol.

This shape or symbol indicates WARNING.

The content of WARNING is shown by a picture or words beside the

symbol.

◆Color back : red, flame, picture and words : black

This shape or symbol indicates CAUTION.

The content of CAUTION is shown by a picture or words beside the

symbol.

◆Color back : yellow, flame, picture and words : black

SAFETY PRECAUTIONS

Yellow

Red

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Contents

For a safe use of the LQ500 Density Meter, take precautions described in this manual and

observe ordinances in making the installation and operation. Toshiba is not responsible for any

accident arising from the use that does not conform to above.

INSTALLATION PRECAUTIONS

WARNING

■Electrical work, installation

work are needed for the meter.

Please consult with the sales

agent you purchased the meter,

some of the companies

specialized in this field or your

Toshiba representative.

If any of these work items is

performed incorrectly, this can

cause fire or explosion.

■The meter is heavy. To move

the meter for relocation or

installation, a qualified operator

must handle it by using

equipment such as a truck, a

crane or a sling.

In addition, when you lift the

meter with its lifting bolts, make

sure the bolts have been

securely tightened to the end.

Overturning or dropping can cause

injuries or equipment failure.

DON’T

■Do not operate where there is

a possibility of leakage of

flammable or explosive gas.

A fire or explosion can occur.

CAUTION

■Avoid installing the meter in

any of the following places:

Otherwise, a fire or equipment

breakdown or failure can occur.

l Dusty place

l Place where corrosive gases

(SO2, H2S) or flammable gases

may be generated.

l Place exposed to strong vibration

or shock.

l Place exposed to condensation

due to abrupt change in

temperature.

l Place too cold or hot for

installation

l Near an apparatus that generates

strong radio waves or strong

magnetic field.

■Install the meter in a place

easier for operation,

maintenance and inspection.

In addition, when you place the

meter temporarily in a stocking

area, make sure to execute fall

prevention measures.

Stumbling over the meter or a fall of

the meter can cause injury.

Red

Yellow

RF section

Detector

Applicator

Cure sheet

Roll-over

prevention

stopper

SAFETY PRECAUTIONS (Continued)

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WIRING PRECAUTIONS

WARNING

■Be sure to install a fuse and a

switch to disconnect the

equipment from the power

source.

Failure to observe this can cause

electric shock or equipment failure.

■Be sure to ground the

equipment using a grounding

wire separate from those used

for power tools.

(Grounding resistance: 100 Ω or

less)

Without grounding, electric shock,

malfunction, or equipment failure

can be caused by electric

leakage.

■Make sure that the main

power line is off before wiring or

cabling.

Wiring or cabling without switching

off the main power line can cause

electric shock.

■Use crimp terminals with

insulation sleeves for power

line and grounding wire

terminals.

A disconnected cable or wire from

the terminal or a loose terminal

can cause electric shock or

generate heat and cause a fire or

equipment failure.

■Wiring and cabling should be

done as shown in the wiring and

connection diagrams.

Wrong wiring or cabling can cause

malfunctions, overheating, sparking,

or electric shock.

DON’T

■Do not wire or cable with wet

hands.

A wet hand can cause electric

shock.

The label shown left appears near a terminal block on

the equipment to which power is supplied. Take

precautions to avoid electric shock.

Yellow

SAFETY PRECAUTIONS (Continued)

Yellow

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Contents

PRECAUTIONS REGARDING MAINTENANCE, INSPECTION,

AND PARTS REPLACEMENT

WARNING

■Be sure to set the power

switch on the equipment to the

OFF position before doing

maintenance or inspection

inside the equipment or

replacing its parts.

Failure to observe this can cause

electric shock or equipment failure.

■Be sure to set the power

switch on the equipment to the

OFF position before replacing

the fuse.

Failure to observe this can cause

electric shock.

DON’T

■Do not touch the terminal

block during maintenance or

inspection. If it is necessary to

touch the terminal block, set the

power switch on the equipment

to the OFF position in advance.

Failure to observe this can cause

electric shock.

DON’T

■Do not attempt disassemble

or modify the equipment.

Failure to observe this can cause

electric shock or equipment

failure.

DON’T

■Do not touch the detector

pipe when high temperature

liquid is flowing in the detector

pipe. The detector pipe also

gets hot from the flowing liquid.

Otherwise, a burn can result.

Yellow

The label shown at left is

placed near each

terminal block on the

equipment to which

power is supplied. Be

careful of electric shock.

SAFETY PRECAUTIONS (Continued)

Yellow

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Limited Applications of the product

• This product is designed and manufactured for use in systems such as general industrial equipment

(food manufacturing line control, various process control, manufacturing line control water treatment

facility and so on). This product is not designed or manufactured for the purpose of applying to the

systems, such as shown below, which require the level of safety that directly concerns with human

life. When your use includes potential applications in those systems, contact Toshiba for consultation.

(Example)

• Main control system for atomic power generating plant/Safety protection system for

nuclear facilities/Other critical safety systems

• Medical control system for sustaining life

• This product is manufactured under strict quality control but components might fail and if this product

is likely to be applied to a system that concerns with human life or it is likely to be applied to a facility

that may cause serious effects, please give special consideration to make the system safe regarding

the operation, maintenance and management of the system.

• This product is not approved as an explosion-proof device. Do not use this product in an area of

explosive atmosphere (explosion protected area).

Liability Exemptions

• Toshiba assumes liability exemptions from the following examples.

• Damages caused by fire, earthquake, actions by third party, other accidents, abuse or

faulty use whether accidental or intentional by the user, or by other uses of abnormal

conditions.

• Damages or losses that are incidental to the use of or disuse of the product (loss of

business profit, interruption of business operation, etc.)

SAFETY PRECAUTIONS (Continued)

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Contents

When an explanation is made in the text regarding the Safety Precautions, the [NOTE] sign

shown below appears in the left margin of a page. The [NOTE] gives you directions to follow in

the following instances.

• To use product correctly and effectively.

• To prevent abnormal or degrading performance of the product.

• To prevent faulty actions.

• To store the product when you do not use the product for a long time.

[NOTE] Sign

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Be sure to observe following instructions in order to maintain the original performance of the

LQ500 Density Meter and safely use it over a long period of time.

• Toshiba is not held responsible for any fault or result caused by not observing the precautions

described in this manual or by not observing the laws or regulations in installing or using the product.

[NOTE] Do not install or store the product in the following places.

Otherwise, meter performance can deteriorate and malfunction, fault, or breakage can

occur. Place exposed to direct sunlight

Hot, humid place

Place exposed to severe vibration and shock

Place that can be under water

Place of corrosive atmosphere

[NOTE] Use a separate wire for grounding the meter. Do not share the same

grounding wire with other devices.

Otherwise, malfunction, fault, or breakage can occur.

[NOTE] Lay the output signal cable through their own conduit away from the AC power

cable and other sources of noise.

Noise can interrupt correct measurement.

[NOTE] Perform periodic maintenance and inspection.

A long period of reliable measurement requires periodic span calibration

[NOTE] Be careful not to let water or moisture into the applicator mount of the detector,

converter, or cable ends.

Water or moisture can adversely affect performance and shorten parts service life.

Close the covers and doors securely, and make the cable outlets airtight.

[NOTE] Turn on power when the meter is installed on metal pipe.

When you install or remove the meter, make sure to turn off power beforehand.

This can affect other equipment due to leakage of radio waves.

[NOTE] Do not remove the cover of the applicator mount of the detector as well as the

cover of the detector RF section while the meter is in operation after power is

applied.

This can affect other equipment due to leakage of radio waves.

Important Notes of Use of LQ500 Density Meter

[NOTE] Do not step on any part of the density meter (applicator mount, converter for

example) when you do piping work. Do not place any heavy object on it.

Otherwise, deformation or fault can occur.

Important Notes of Use of LQ500 Density Meter

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Contents

[NOTE] Do not use a transceiver, handy telephone, or other wireless device nearby.

Such a device can adversely affect correct measurement. In the event one must be

used, observe the following precautions.

(1) When using a transceiver, make sure that its output power is 5W or less.

(2) When using a transceiver or a handy telephone, keep the converter and signal

cable at least 30cm away from the antenna.

(3) Do not use a transceiver or a portable telephone nearby while the density meter

is in online operation. This is important to protect if from being affected by a

sudden output power change.

(4) Do not install the fixed antenna of a wireless device in the area around the

converter and signal cable.

[NOTE] Use a fuse of the specified rating.

A fuse other than that specified can cause density meter malfunction or breakage.

[NOTE] Do not modify or disassemble the density meter unnecessarily. Do not use

parts other than specified.

Failure can cause malfunction and density meter fault.

[NOTE] When moving the meter elsewhere for installation, be careful not to drop, hit,

or subject to strong shock.

Otherwise, the density meter may be broken, resulting in malfunction or fault.

[NOTE] Before returning your meter to Toshiba for repair, etc., make sure to inform us

about the measured matter remaining in the density meter pipe, including

whether it is dangerous or not to touch the material and then clean the meter

so that no measured matter remains in its pipe.

About disposal

[NOTE] When you dispose of this density meter, follow the ordinance or regulations of

your state.

[FCC notice] This equipment has been tested and found to comply with the limits for a field disturbance

sensor, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable

protection against harmful interference in a residential installation. This equipment generates,

uses and can radiate radio frequency energy and, if not installed and used in accordance with the

instructions, it may cause harmful interference to radio communications. However, there is no

guarantee that interference will not occur in a particular installation. If this equipment does cause

harmful interference to radio or television reception, which can be determined by turning the

equipment off and on, the user is encouraged to try to correct the interference by one or more of

the following measures.

• Reorient the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different fr6m' that to which the receiver

is connected.

• Consult the dealer or an experienced radio,'1'V technician for help.

WARNING: This equipment has been certified to comply with the limits for a field disturbance

sensor, pursuant to Subpart C of part 15 FCC rules. Except AC power cable, shielded cables must be

used between the external devices and the terminals of the converter of the equipment.

Changes or modifications made to this equipment, not expressly approved by Toshiba or parties

authorized by Toshiba could void the user's authority to operate the equipment.

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Contents

SAFETY PRECAUTIONS..........................................................................................................2

[NOTE] SIGN.............................................................................................................................7

IMPORTANT NOTES OF USE OF LQ500 DENSITY METER ..............................................8

1 OVERVIEW........................................................................................................................13

1.1 Principle of Measurement.................................................................................................13

1.2 Features.........................................................................................................................14

2. UNPACKING .....................................................................................................................15

2.1 Standard Components.....................................................................................................15

2.2 Standard Accessories .....................................................................................................15

3. INSTALLATION.................................................................................................................16

3.1 Precautions for Installation...............................................................................................16

3.2 Installation Location.........................................................................................................17

3.3 Installation and Piping......................................................................................................18

3.4 Precautions for wiring ......................................................................................................21

3.5 Wiring............................................................................................................................22

4. PART NAMES AND FUNCTIONS....................................................................................25

4.1 Detector.........................................................................................................................25

4.2 Converter........................................................................................................................27

5. OPERATION PROCEDURE ............................................................................................29

5.1 Parameter and Set Values ...............................................................................................29

5.2 Menus and operations .....................................................................................................31

5.2.1. Main menu................................................................................................................31

5.2.2 Setting keys .............................................................................................................32

5.2.3 Menu display.............................................................................................................33

5.2.4 Monitoring menu display and operating procedures .......................................................36

5.2.5. Setting menu display and operating procedures............................................................37

5.2.6 Measuring mode display and operating procedures .......................................................38

5.2.7 Reading of parameters display and operating procedures ..............................................38

5.2.8 Measured values display and operating procedures.......................................................41

5.2.9 Self-diagnosis data display operating procedures..........................................................41

5.2.10 Parameter setting display and operating procedures .....................................................43

5.2.11 Zero calibration display and operating procedures.........................................................46

5.2.12 Span calibration display and operating procedures........................................................46

5.2.13 Phase angle rotation correction display and operating procedures ..................................47

5.2.14 Linearize/conductity correction display and operating procedures ...................................48

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Contents

5.2.15 Additives correction display and operating procedures .................................................. 51

5.2.16 Other menus display and operating procedures ............................................................ 54

6. OPERATIONS...................................................................................................................56

6.1 Procedures for Preparing and Running .............................................................................. 56

6.2 Preparations before Turning on Power............................................................................... 57

6.3 Power on and Preparations for Measuring.......................................................................... 57

6.3.1 Turning power on....................................................................................................... 57

6.3.2 Verifying and setting measurement conditions ............................................................. 58

6.4 Zero Calibration............................................................................................................... 60

6.5 Span Calibration ............................................................................................................. 62

6.6 Operation....................................................................................................................... 64

6.7 External Synchronized Operation ..................................................................................... 65

6.7.1 Movement of the external synchronized operation......................................................... 65

6.7.2 Setting the external synchronized operation................................................................. 66

6.8 Functions Related to Operation........................................................................................ 67

7. MAINTENANCE ................................................................................................................68

7.1 Precautions for Maintenance, Inspection and Parts Replacement ........................................ 68

7.2 Maintenance and Inspection Items.................................................................................... 69

8. TROUBLESHOOTING.....................................................................................................71

8.1 Troubleshooting .............................................................................................................. 71

8.2 Error Indications and Recovery Operations ........................................................................ 73

9. CORRECTIONS IN DENSITY CALCULATION.............................................................75

9.1 Density Calculation......................................................................................................... 75

9.2 Various Kinds of Corrections............................................................................................ 76

9.2.1 Phase angle rotation correction .................................................................................. 76

9.2.2 Fluid temperature correction....................................................................................... 76

9.2.3 RF correction............................................................................................................ 77

9.2.4 Ambient temperature correction.................................................................................. 77

9.3 Phase Angle Rotation Correction (Details)......................................................................... 78

9.3.1 Care point concerning phase angle rotation.................................................................. 78

9.3.2 Phase angle rotation in external synchronized operation................................................ 78

9.3.3 Outline of automatic adjustment function of phase angle rotations................................. 78

9.3.4 Judgment conditions and adjustments for automatic adjustment of phase angle rotations 78

9.3.5 Restrictions and invalidation in applying the automatic adjustment of phase angle rotations

............................................................................................................................... 79

9.3.6 Invalidation by setting the automatic adjustment of phase angle rotations ...................... 79

9.3.7 Actions after invalidating the automatic adjustment of phase angle rotations .................. 80

9.3.8 Return to the normal through manual input of the phase angle rotations ......................... 81

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Contents

10. VARIOUS FUNCTIONS....................................................................................................82

10.1 Various Functions and their Outlines.................................................................................82

10.2 Moving Average...............................................................................................................83

10.2.1 Function of moving average........................................................................................83

10.2.2 Setting of the moving average times............................................................................83

10.2.3 Cautions in using the moving average function.............................................................83

10.3 Change-rate limit.............................................................................................................84

10.3.1 Outline of change-rate limit function............................................................................84

10.3.2 Examples of operating the change-rate limit function ....................................................84

10.3.3 Cautions in using the change-rate limit factor...............................................................85

10.3.4 Setting the change-rate limit.......................................................................................86

10.4 Electric Conductivity Correction........................................................................................87

10.4.1 Standard conductivity correction factors ......................................................................87

10.4.2 How to obtain and set a correction factor.....................................................................88

10.5 Additives Correction Factor ..............................................................................................92

10.5.1 Additive Correction Function.......................................................................................92

10.5.2 Density calculation ....................................................................................................93

10.5.3 Procedures for using the additives correction function...................................................94

10.5.4 How to set the additives correction function .................................................................95

10.5.5 Simplified Correction on Additives...............................................................................96

10.6 LINEARIZER SETTING ....................................................................................................97

10.6.1 Linearizer function.....................................................................................................97

10.6.2 Linearizer setting.......................................................................................................98

10.7 Density Multiplier Switching by External Signals.............................................................. 100

10.7.1 Density multiplier switching function by external signals.............................................. 100

10.7.2 Setting the density multiplier switching by external signals .......................................... 100

11. SPECIFICATIONS...........................................................................................................102

11.1 General Specifications................................................................................................... 102

11.2 Detector Specifications.................................................................................................. 103

11.3 Conveter Specifications.................................................................................................. 104

11.4 Model Number Table...................................................................................................... 106

APPENDIX..............................................................................................................................107

Attached Figure1. Detector outline dimensions .......................................................................... 107

Attached Figure2. Converter dimensions.................................................................................... 109

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1 OVERVIEW

The LQ500 Density Meter measures the density of a substance that flows through a pipe by means

of a phase difference method using microwaves.

This method is little affected by the presence of contamination. It uses no moving mechanical parts

or mechanism that is often used in other measuring methods for cleaning, sampling, or defoaming.

It permits continuous measurement.

The density meter, which outputs measured density in electric current, is suitable for an application

in a process for monitoring and controlling.

1.1 Principle of Measurement

This density meter has adopted a new measuring method called “Phase difference method by

microwaves.” When microwaves go through a substance and comes out of it, by measuring the

phase lag of the waves, we get a certain physical property of the substance that is proportional to

the density.

The theory of density measurement based on the phase difference method is shown in Figure 1.1

The difference between the phase lagθ1 of the microwave received through water (density 0%)

and the phase lagθ2 of the microwave received through the object substance, that is,

Δθ ＝ θ2 − θ1

is determined, and since the differenceΔθis in direct proportion to the density, the density of the

object substance is measured.

Microwave

transmission

Density

Phase difference

Δθ

Phase difference Δθ=θ

Ｗ−θ

Ｓ

Density =Ｋ・Δθ (K: Coefficient)

ｔ

Phase lagθ

Drinking

water

Phase lagθ

Reception

Substance to

be measured

Fig. 1.1 Principle of phase angle difference

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1.2 Features

Compared with the conventional method, this phase difference measurement method using micro

waves, in principle, has the following features.

(1) Not easily affected by contamination.

This method is measuring the variation of the transmission time but not for measuring the

attenuation of the wave motion strength that has been transmitted into the measured matter.

Therefore, it is unnecessary for the window part for sending/receiving microwaves to be

transparent as the optical type.

(2) This meter is not affected as much as an ultrasonic type is by air bubbles

In an ultrasonic system, measurement is affected by attenuation of wave motion by foreign

matters such as air bubbles but the feature of the microwave method is that measurement is

not easily affected by foreign matters such as air bubbles because the method is not using the

attenuation of wave motion strength.

(3) High liability and simple maintenance.

Having no movable part of the rotating pulp density meter nor the protruding portion into the

pipe as with the blade-type pulp density meter, the new method is free from fiber tangling, thus

realizing a high level of reliability. Requiring no consumable parts such as bearings and pulleys,

the maintenance is also easy and simple.

(4) Not easily affected by the speed of flow.

Taking density measurements captivating the dielectric change following the density change in

the measured matter, this method is not affected by the speed of flow.

(5) Not easily affected by the pulp material type or freeness.

Taking density measurements captivating the dielectric change following the density change in

the measured matter, the new method has the feature of not easily affected by the pulp

material type or freeness, etc.

(6) Being of the flow-through type, the new method is capable of continuous measurement.

As others, the new density meter model LQ500 boasts of the following features.

(7) Can easily change the measurement range.

(8) The operation is simple because complex processings such as density calculation and

correction, etc. are performed automatically by micro computers.

(9) Remote control is made possible by using the hand-held terminal AF100LQ3 type (optional),

which is a specialized terminal for communication.

Density meter LQ500 is equipped with the display/operation consoles as standard.

Therefore, if the meter is installed on a location easy for maintenance, the hand-held

terminal is not always needed.

(10) Measurable up to 50% TS density

(11) Conforming to low-level radio wave equipment

The microwave output of this meter is low with about 10mW and this meter conforms to

“Low-level radio wave equipment” specified by Radio Law. Therefore, the customer is free

to use this meter without applying for permission, notification or licensing of this meter.

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2. UNPACKING

Check items by the following list and table at unpacking.

2.1 Standard Components

(1) Density Meter : 1 unit (One unit each of Detector and Converter,)

(2) Standard accessories : 1 unit (One set of cables,Fuse,Operation manual)

In the event of performing remote control through communications, you are required to have the

hand-held terminal AF100 type (type code: AF100LQ4BAA3, Instruction Manual: 6F8A0763),

which is a specialized terminal for communications. Therefore, please purchase one separately.

2.2 Standard Accessories

Table.2.1 Standard accessories

Accessory Specifications Qty

Power supply

cable

Used to supply DC power from the converter to the RF section

(detector)

Overall diameter: 11.0 to 13.0 mm

JCS 258 C 2-core CVV-S

10m

(32.8ft)

Communication

cable

Used between the converter and the RF section (detector) to

communicate with each other.

Overall diameter: 11.0 to 13.0 mm

JCS 258 C 4-core CVV-S

10m

(32.8ft)

Fuse

２A(Ｔ),250V cartridge, glass tubular fuse,

5.2mm outer dia. x 20mm long

Shape/characteristics: 5NM or equivalent (based on JIS C

6575)

Operation manual

(The document you are reading.) 1

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3. INSTALLATION

3.1 Precautions for Installation

WARNING

■The meter is heavy. To move

the meter for relocation or

installation, a qualified operator

must handle it by using

equipment such as a truck, a

crane or a sling.

In addition, when you lift the meter

with its lifting bolts, make sure the

bolts have been securely

tightened to the end.

Overturning or dropping can cause

injuries or equipment failure.

DON’T

■Do not operate where there is

a possibility of leakage of

flammable or explosive gas.

A fire or explosion can occur.

CAUTION

DON’T

■Avoid installing the meter in

any of the following places:

Otherwise, a fire or equipment

breakdown or failure can occur.

l Dusty place

l Place where corrosive gases

(SO2, H2S) or flammable gases

may be generated.

l Place exposed to vibration or

shock that exceeds permissible

level.

l Place exposed to condensation

due to abrupt change in

temperature.

l Place too cold or hot for

installation

l Place too humid for installation

l Near an apparatus that generates

strong radio waves or strong

magnetic field.

Install the meter in a place

easier for operation,

maintenance and inspection.

In addition, when you place the

meter temporarily in a stocking

area, make sure to execute fall

prevention measures.

Stumbling over the meter or a fall

of the meter can cause injury.

RF section

Detector

Applicator

Cure sheet

Roll-over

prevention

stopper

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3.2 Installation Location

[NOTE]

◆ Determine an indoor installation place in accordance with the following instructions.

(1) Choose a place that is free of vibrations and corrosive gasses, and has ample space for

maintenance.

(2) Secure maintenance space in front, rear and above the density meter. (Refer to fig. 3.2.11)

(3) In the case of outdoor installation, provide covering against sun .

(4) Do not install the meter in a place where there is a possibility of leakage of flammable or

explosive gas.

(5) Do not install the meter in any of the following places:

• A place where condensation due to a sudden temperature change occurs.

• A place where extreme low or high temperatures occur outside the specification range.

• A place near the equipment generating strong radio waves or electric fields.

(6) Make sure the upstream and downstream pipes have enough strength to hold the density

meter. If it is not possible, provide a supporting base to hold the density meter.

(7) Install the meter in a place where density distribution is uniform. If the distribution inside the

pipe is uneven, manual analysis data and the indicated value of the density meter may not

show the same value.

(8) Install the meter in a place where air bubbles are not generated, inside the pipe is always

filled, and sedimentation and accumulation of solid matters do not occur.

(9) The liquid contacting materials of this meter are stainless steel SCS14A(equivalent to

316SS) and polysulfone. Install the meter in a place where measuring liquid or environment

does not corrode these materials.

(10) If the cover of the density meter is removed or the density meter is disassembled while the

meter is powered, radio waves will leak out. (However, the amount is about equal toPHS

and one tenth of mobile phones.)

In addition, provide maintenance

space of 500mm in height above

the RF section and the Converter.

Back

Front

Maintenance

space

600

500

600

500

Convertor

500

600

Maintenance

space

Fig. 3.2.1 Space for Maintenance

Detector

RF section

Converter

 18 

6 F 8 A 0 5 2 1

3.3 Installation and Piping

Figures 3.3.1 through 3.3.4 are examples of density meter installation.

[NOTE]

(1) Install the meter in a place where density distribution is uniform.

(2) Avoid such a location where the measured matter will settle and build up on the bottom of

the density meter.

(3) Avoid such a location which will allow bubbles to move into the pipe line.

(4) We recommend that this density meter should be installed to a vertical piping system.

Horizontal installation can also be used with the same performance but under the following

conditions, vertical installation must be chosen:

(5) Especially in the following situations, make sure that the piping is vertical.

a) Bubbles may stay in the pipe.

b) Slow flow speed or other factors may cause the measured matter to sink or float

substantially making the distribution of the measured-matter density uneven in the pipe.

c) The main pipe has been enlarged thus using the density meter of a diameter greater than

that of the main pipe.

(6) When installing on the horizontal piping, make sure that the meter is installed directly on top

of the converter section for purposes of maintenance and performance assurance (in other

words, so that the paired applicator sections are placed directly side by side).

(7) This density meter does not distinguish between the upstream side and the downstream side.

Neither does it require a straight tube length. Install it in a direction that will make

maintenance easy.

(8) The front side of the density meter's converter section is equipped with an LCD density

display section. When installing the meter, choose a location and direction in which this

density display section will be easily visible. (See Fig. 3.3.3)

(9) When you anticipate a marginal error between the side-to-side dimensions of this density

meter and the installation space of the piping line, prepare a loose mechanism in advance.

(10) To minimize the impact of the bubbles mingled, it is recommended that the meter be installed

on a location as far as possible from the pipe outlet for air release but still within the distance

where a reasonable degree of hydraulic pressure is applied.

(11) In the event that the density meter may no longer be full of the fluid while the pump is shut

down or the density distribution in the density meter may become uneven, make sure to take

measurements only while the pump is operating by using the external interlock function.

(12) Take necessary measures to prevent vibration from a pump or other equipment applied to

the density meter transmitted through the piping.

(13) On both the upstream and downstream sides of the density meter, install shutoff valves.

Furthermore, between these valves and the density meter, install the sampling port, the zero

water supply port, the air release port, the drain port with a shutoff valve attached

respectively. In the event that the flow of the pipe line cannot be stopped, provide a bypass

pipe halfway with a shutoff valve attached. When performing zero point calibration, these

are needed to discharge the measured matter out of the density meter through its drain port

and fill up the meter with fresh water of zero density. (See Fig.3.3.1 and Fig.3.3.2)

(14) As for gaskets to be used in piping, select the one with the dimension conforming to the

flange standard and of the material appropriate for the substance to be measured.

(15) If the cover of the density meter is removed or the density meter is disassembled while the

meter is powered, radio waves will leak out. (However, the amount is about equal to PHS

and one tenth of mobile phones.)

 19 

6 F 8 A 0 5 2 1

[NOTE]

◆Sampling valve: Used to extract fluids for manual analysis. Install this valve to the side

of the pipe in the case of horizontal installation. It is recommended that

a 1-inch ball valve be installed to the side of the pipe.

◆Zero point water valve: Used to supply drinking water (density or consistency 0%) to the

detector pipe for zero point adjustment. Install this valve at the top of

the pipe in the case of horizontal installation. It is recommended that a

1-inch ball valve be installed in the top of the pipe and zero point water

is supplied through this inlet using a vinyl hose etc.

If valve water pipe is connected to this valve, air cannot be extracted.

Therefore, another valve (vent valve) is needed to extract air.

◆Vent valve: Used to vent process fluids to open air when performing zero

adjustment. This helps the drinking water (density or consistency 0%)

enter the detector pipe easily. Install this valve in the top of the pipe in

the case of horizontal installation.

◆Drain valve: Used to drain the fluids before supplying drinking water (density or

consistency 0%) to the detector pipe for zero adjustment. Install this

valve at the lowest point of the pipe. It is recommended that a 1-inch

ball valve be installed at the lowest point of the pipe.

Fig.3.3.1 Meter mounted horizontally

Vent valve

Zero point water valve

Stop valve

Drain valve

Bypass piping

Density meter

Stop valve

Sampling valve

Fig 3.3.2 Setting example (Horizontally)

RF section (RF section must stay at the top.)

Detector

Applicator (one pair)

This section must be level.

Wall

Floor

Detector

Base frame

U-bolt

Wall mounting or

pipe mounting

Converter

Fig 3.3.2 Setting example (from converter side)

 20 

6 F 8 A 0 5 2 1

Fig.3.3.4 Meter mounted vertically

[NOTE]

When you lift the meter using a lifting wire for relocation, installation or for other purposes, use

the wire so that the wire does not touch the RF section of the density meter. We recommend

you use a lifting wire of 2m or more in length (A/2 + A/2 shown below). In case the lifting wire

rubs against the RF section, the RF section may be damaged. Care should be taken not to

damage the RF section by applying cure such as cushioning materials between the lifting wire

and the RF section.

A/2

Lifting wire

RF section

The center of gravity

Stop valve

Bypass piping

Density meter

Zero point water valve

Zero water piping

Stop valve

Drain

Direction of flow Upward

Drain valve

Stop valve

Air release valve

Figure 3.3.5 Lifting the Density Meter with a Lifting Wire

 21 

6 F 8 A 0 5 2 1

3.4 Precautions for wiring

WARNING

■Be sure to install a fuse and a

switch to disconnect the

equipment from the power

source.

Failure to observe this can cause

electric shock or equipment failure.

■Be sure to ground the

equipment using a grounding

wire separate from those used

for power tools.

(Grounding resistance: 100 Ω or

less)

Without grounding, electric shock,

malfunction, or equipment failure

can be caused by electric

leakage.

■Make sure that the main

power line is off before wiring or

cabling.

Wiring or cabling without switching

off the main power line can cause

electric shock.

■Use crimp terminals with

insulation sleeves for power

line and grounding wire

terminals.

A disconnected cable or wire from

the terminal or a loose terminal

can cause electric shock or

generate heat and cause a fire or

equipment failure.

■Wiring and cabling should be

done as shown in the wiring and

connection diagrams.

Wrong wiring or cabling can cause

malfunctions, overheating, sparking,

or electric shock.

DON’T

■Do not wire or cable with wet

hands.

A wet hand can cause electric

shock.

The label shown left appears near a terminal block on

the equipment to which power is supplied. Take

precautions to avoid electric shock.

Yellow

 22 

6 F 8 A 0 5 2 1

3.5 Wiring

Figure 3.5.1 on the next page shows connections to the density meter and the external units. Figure

3.5.2 shows wiring assignment to a converter terminal. Refer to these figures for correct wiring.

[IMPORTANT]

(1) A density meter has to be separated from the power supply line when performing the

maintenance and inspection operation. A fuse must be installed on the power supply side to

protect a switch and the power. A power requirement for this unit is approximately 50 VA.

Power consumption of this meter is 24VA (at 100VAC).

(2) Grounding resistance should be 100 Ω or less and the grounding should be made independently

from the one used for power equipment.

(3) To connect between the detector and the converter, use the attached power cable (to supply

DC power supply) and communication cable. Connect these cables by matching the terminal

symbols of the detector RF section’s terminal block (can be seen when the RF section cover

is removed) and the converter’s terminal block with those shown on each cable.

(4) Use power cables of 2 mm2 or more in sectional area and its voltage drop should be 2V

maximum. In addition, use an M4 size crimped terminal for each terminal connections.

(5) Consider wiring when installed so that vibration or sway will not be applied to cables.

(6) Output signal wires should be installed in thick walled steel conduit and separated from AC

power supply, control signal, alarm signal and other wires that may become a source of noise.

(7) Signal wires of the density meter measured value (4-20 mA output) should be a 2-conductor

shielded cable (CVVS 2 mm2) and the grounding of the shield should be made on the receiving

instrument side. When conductivity correction is employed, use the same type of 2-conductor

shielded cable (CVVS 2 mm2) for conductivity signal wires and the grounding of the shield

should be made on the receiving instrument side.

(8) Cable wiring port is airtight with gland and packing; therefore, tighten the cable gland securely

when wiring is completed. Applicable cable sizes are 11 to 13 mm in diameter. If the cable

diameter is smaller than the inside diameter of the gasket, wind tape or something around the

cable until the cable diameter becomes about the size of the inside diameter of the gasket.

(9) Tighten terminal screws securely. Appropriate tightening torque for terminal block screws is

1.2 N•m (1.4 N•m MAX).

(10)Do not apply power when the density meter is not installed properly in the piping system.

Leakage of radio waves may cause interference with other equipment.

 23 

6 F 8 A 0 5 2 1

Fig. 3.5.1 External connection

Fig. 3.6 Terminals inside the converter

Ground (PE)

(Ground resistance: 100Ω or less)

Density meter error or

maintenance-in-progress contact

output

Grounding terminal

Note: The ground should be connected to either the PE

terminal of the terminal bock inside converter or to the

grounding terminal of the case.

Density correction multiplier switching

voltage input signal

(H: 20-30VDC, L: 2VDC or less, input

resistance about 3kΩ)

External sync contact input

(Contact capacity: 24VDC, 1A or more)

Measured density output

(4-20mADC, 750Ω or less, isolated

CVV

CVVS

Converter

Power 100 to 240VAC, 50/60Hz

CVV

COM

COM1

DO1

AO+

AO-

COM2

DI2

DI3

Tx＋

Tx-

Rx+

Rx-

+24

Tx＋

Tx-

Rx+

Rx-

+24

Power

cable

Communication

cable

section

Ec-

Ec＋

Conductivity

signal input

(4 ~ 20mADC)

Note: The FG wires of the dedicated

cables A and B should not be

connected to the FG terminal on the

detector (measuring section) side.

CVVS

Ground

(Ground resistance: 100Ω or less)

Power supply

Terminal block

+24V

0V Tx＋

Rx+ NC (FG) DI D01 DI2 DI3

AO+

L1 Ｌ２

FG Tx−

Rx−

SG (FG) COM COM1 (FG) COM2

AO−

Communication

External sync in

put DI,

COM

Density meter error or

maintenance-in-progress

signal: DO1, COM1

Multiplier switching:

DI2, DI3, COM2

AO (+, −)

4-20mA

Density output

(HART)

AC Power

 24 

6 F 8 A 0 5 2 1

Figure3.5.3 Terminals arrangement inside the RF section

[NOTE] For connection between the converter and the RF section, connect cables according to

the band marks attached to the power cable (1) and the communication cable (2).

Erroneous connection can cause a failure or an erroneous operation.

[NOTE] For connection between the converter and the RF section, make sure to use the attached

power cable (1) and communication cable (2). Using other cables can cause an erroneous

operation.

Power supply

Terminal block

+24V

0V Tx＋

Rx+ FG EC＋

FG Tx−

Rx−

SG EC−

Communication

Conductivity signal input

(4 ~ 20 mADC)

 25 

6 F 8 A 0 5 2 1

4. PART NAMES AND FUNCTIONS

The detector is integrated with the converter in LQ500 Density meter.

4.1 Detector

Fig.4.1.1 Detector

(3) Temperature detector

RF section

(2) Applicator section (1) Main pipe

Detector

 26 

6 F 8 A 0 5 2 1

(1) Main pipe

Refers to the part connected to the pipe line of a measured object. FLANGE is JIS 10K or

equivalent. Contact Toshiba for connections other than this method (shown left).

(2) Applicator mount

The applicators (antenna) for transmitting and receiving microwaves are built inside. The

applicator on the front in Fig.4.1 is for transmitting and the rear is for receiving. Always keep

the lids closed and the screws of the lids secured.

(3) Temperature detector

The temperature detector (RTD) is for temperature correction. It measures temperature of the

fluid flowing through the main pipe.

(4) RF section

This is the section that generates and detects microwaves and also performs signal processing.

Do not open the case cover or loosen the bolts of the cover.

 27 

6 F 8 A 0 5 2 1

4.2 Converter

Figure 4.2 shows the converter with its door open.

(3) [POWER]

indicator

FUSE

2A(T)

250V

(4) [MEASURE]

indicator (5) [ALARM]

indicator

(6) LCD indicator

(7) Setting keys

(1) Power switch

(2) Fuse

(8) Terminal block

(9) Cable gland

FUSE

2A(T)

250V

 28 

6 F 8 A 0 5 2 1

[NOTE] Install the converter cover when operating the density meter. In addition, tighten securely

the screws of the converter cover. If screws are not tightened enough, moisture, dust or

other particles enters the converter and can cause a converter failure.

(1) [POWER] switch

The power switch for the density meter.

(2) [Fuse]

2A(T), 250V glass tube fuse is inside.

(3) [POWER] Indicator (Green LED)

Green LED lights when AC power turns on by the power switch.

(4) [MEASURE] Indicator (Green LED)

The indicator lights when measuring, and turns off when setting and when measuring stops at

externally synchronized operation.

(5) [ALARM] Indicator (Red LED)

Lights on error signal from the meter.

(6) LCD indicator

Displays measured values, set values and self-diagnosis data, etc. Being an indicator of 20

characters by 4 lines, it displays numerical values, alphanumeric characters and symbols in

accordance with needs.

(7) Setting keys

These keys are used for switching between display contents of the LCD indicator or setting

various set values. They include the [ESC] key, the [→] key, the [UP] key, [DN] key and the

[SET] key.

(8) Terminal block

Refers to the terminal block connecting cables for external connection.

(9) Cable glands

Six cable glands are available for introducing cables for external connection, such as power

supplies and output signals.

 29 

6 F 8 A 0 5 2 1

5. OPERATION PROCEDURE

5.1 Parameter and Set Values

The set values and setting ranges by parameter at the time of factory shipment are listed in Table

5.1.1 below.

Table 5.1.1 Parameters and Set Values (No.1)

Measurement Condition Parameter

Unit Ex-factory Set Value Setting Range

Density multiplier (C) ― 1.000 (Standard value) 0.00 ∼ 9.99

Upper density

measurement range (UR) ％TS Value specified in your order 1.0 ∼ 99.9

Lower density

measurement range (LR) ％TS Value specified in your order 0.0 ∼ 99.5

Density line slope (a) %TS per degree

Value in Table 5.1.2 for each

aperture - 0.2000 ∼ 0.2000

Density intercept (b) ％TS 0.00 (Standard value) - 99.99 ∼ 99.99

Density test output

during setting mode (ot) ％TS 50% density of FS (Provisional

value) 0.0 ∼ 99.9

Delayed time in external synchronized

operation (dt) Minute 0.5 (Provisional value) 0.1 ∼ 99.9

Zero-point phase θ1 (zp) Degree Value at the time

of factory adjustment 0.00 ∼ 359.99

Zero-point fluid temperature T0 (zT) ℃ Value at the time

of factory adjustment 0.00 ∼ 100.00

RF correction factor (cG) − Value at the time

of factory adjustment -9.99 ∼ 9.99

Zero-point RF data (zG) − Value at the time

of factory adjustment 0.00 ∼ 100.00

Moving average times (ma) Time 1 (Without moving averaging) 1 ∼ 99

Permissible width of change-rate limit

(dx) %TS 0.00 (NONE) 0.00∼9.99

Limit times of change-rate limit (HL) − 0 (Without change-rate limit ) 0∼99

Upper angle of angle

rotation correction (UH) Degree 260 240∼360

Upper angle of angle

rotation correction (SH) Degree 100 0∼120

Linearizer density A (LA) %TS 0.60 (Provisional value) 0.00∼99.99

Linearizer density B (LB) %TS 1.00 (Provisional value) 0.00∼99.99

Linearizer inclination (K1) − 1.00 (Without linearization) 0.00∼9.99

Linearizer inclination (K2) − 1.00 (Without linearization) 0.00∼9.99

Linearizer inclination (K3) − 1.00 (Without linearization) 0.00∼9.99

Electric conductivity correction factor

γ(r)

Degree

(per mS/cm)

00 (Without electric conductivity

correction) 0.00 ∼ 99.99

Zero-point electric conductivity Eo (zE)

mS / cm 0.00 0.00 ∼10.00

Measured object electric conductivity (EC)

mS / cm 0.00 0.00 ∼10.00

 30 

6 F 8 A 0 5 2 1

Table 5.1.1 Parameters and Set Values (No.2)

Measurement Condition Parameter Unit Ex -factory Set

Values Setting Range

Availability of additives correction

(AF) − No (Without loading

material correction) OFF / ON

Display density type of

additives correction (Ad) − Total TOTAL / MAIN

Output density type of

additives correction (Ac) − Total TOTAL / MAIN

Parameter set No. of

additives correction (Ap) − 1 1∼10

Main-object sensitivity (sO) − 1.00 −9.99∼9.99

Additives sensitivity (s1) − 0.00 −9.99∼9.99

Additives sensitivity (s2) − 0.00 −9.99∼9.99

Additives sensitivity (s3) − 0.00 −9.99∼9.99

Additives sensitivity (s4) − 0.00 −9.99∼9.99

Additives sensitivity (s5) − 0.00 −9.99∼9.99

Loading additive ratio (R1) − 0.000 0.000∼1.999

Loading additive ratio (R2) − 0.000 0.000∼1.999

Loading additive ratio (R3) − 0.000 0.000∼1.999

Loading additive ratio (R4) − 0.000 0.000∼1.999

Loading additive ratio (R5) − 0.000 0.000∼1.999

Output at contact OFF in external

synchronized operation (ho) − 4mA Value immediately before 4mA ;

simulated output in setting mode

Availability of density multiplier

switching (D1) − OFF（NONE） ON / OFF

Density multiplier at DI (C2) − 1.000 0.000∼9.999

Density multiplier at DI (C3) − 1.000 0.000∼9.999

Density multiplier at DI (C4) − 1.000 0.000∼9.999

Availability of automatic

adjustment of angle rotation (NA)

− ON ON / OFF

Switching between continuous

operation and external

synchronized operation (OP)

− CONT CONT (Continuous) /

EXT(External)

Note : The expression "without ..." has been used in several places in Table 5.1.1 to mean that the

respective numeric values in the table above are set to invalidate their functions.

Table 5.1.2 Density line slope (a)

meter size

(mm) a

50 0.168

80 0.105

100 0.084

150 0.056

200 0.042

250 0.034

300 0.028

 31 

6 F 8 A 0 5 2 1

5.2 Menus and operations

Operations should be done with five keys for setting, in combination with the LCD display.

This section shows menus and operations.

5.2.1. Main menu

Main menu is composed of three basic menus shown below. Table 5.2.1 shows the functions of

each menu and performances when selected.

Table 5.2.1 Functions and performances of main menu

1 ： MONITORING MENU 2 ： SETTING MENU 3 ： MEASURING MODE

Functions

Reading of each

measuring conditions

(parameters), measured

values, and self-diagnosis

data

Changing of each

measuring conditions

(parameters), zero

calibration and span

calibration

Mode selection from among

two measuring modes

(operation modes) of the

normal continuous operation

and the externally

synchronized operation

Measured density

Output (4 ~ 20mA)

Measured density

continuous output Density Test output Measured density continuous

output

LCD Density

display Measured density value Density Test output Measured density valve

[Measure] indicator

On Off On

Note: “Measured density value”is output instead of “Density Test output” as the LCD density display

on the panel when “Zero calibration” or “Span calibration” is selected in the setting menu. This

arrangement is intended to compare the measured density values before and after the

calibration for both Zero and Span calibrations. As to the measured density output (4−20 mA),

“Density Test output” is used for all menu items including Zero calibration and Span calibration.

1 : MONITORING MENU

2 : SETTING MENU

3 : MEASURING MODE

 32 

6 F 8 A 0 5 2 1

5.2.2 Setting keys

Five setting keys are available. The basic methods for using them are described in Table 5.2.2. For

specification information, please refer to their respective operating procedures.

Table 5.2.2 Basic Methods for Using Operation Keys

Setting

Key Notation in

Operation Manual Basic Use

Returns to the menu screen that is one level higher.

ESC

[ESC] On the set value change screen, use this key to clear the setup change

before returning to the previous screen.

On the menu list screen, use this key to move the cursor under the menu

number to the location of the next number.

In the state of setting numerical values, press this key each time the

cursor has to be shifted rightwards by a digit's worth. If the cursor is

located rightmost, the cursor is shifted to the leftmost digit.

[→] In the event of entering the setting menu, press the [SET] key to display

the message saying that the output will be switched to the simulated

value. After making sure that no problem is present, press the [→] key to

enter the setting menu. This procedure is taken for the purpose of

preventing the output from being switched to the simulated value as a

result of mistakenly pressing the [SET] key twice in a row.

On the menu screen, use this key to switch to the next menu screen.

In the state of setting numerical values, use this key to move up the

numeric value of the digit where the cursor is located. Each time the key

is pressed, the numeric value changes incrementally, as following; "0",

"1", "2", ････, "9", "-"(minus symbol), "."(decimal point), "0", "1",

"2", ････.

Note: If the numerical value does not belong to the leftmost digit, "-"

(minus symbol) will not appear after 9.

[UP]

In the event of selecting an item from multiple items (such as ON/OFF),

the cursor (of the selected item) is switched each time this key is

pressed.

On the menu screen, use this key to switch to the previous menu screen.

In the state of setting numerical values, use this key to move down the

numerical value of the digit where the cursor is located. Each time the

key is pressed, the numerical value changes detrimentally , as following;

"0", "."(decimal point), "-"(minus symbol), "9", "8", ････ "1", "0".

Note: If the numerical value does not belong to the leftmost digit, "-"

(minus symbol) will not appear after "."(decimal point).

DN [DN]

In the event of selecting an item from multiple items (such as ON/OFF),

the cursor (of the selected item) is switched each time this key is

pressed.

SET

[SET] Use this key to select the menu number where the cursor is located or

confirm the set value.

 33 

6 F 8 A 0 5 2 1

5.2.3 Menu display

The menu display of the converter LCD display section has a hierarchical structure as shown in

Table 5.2.3.

Note: Occasionally using some abbreviated terms as well, actual LCD displays differ from Table

5.2.3. For details, refer to Section 5.2.4. The symbols in parentheses in Table 5.2.3

correspond to those displayed on the upper left corner of their respective LCD screens.

Table 5.2.3 Menu Display (1)

Menu 1 Menu 2 Menu 3 Menu 4

Density multiplier (C)

Upper density measurement range (UR)

Lower density measurement range (LR)

Density line slope (a)

Density intercept (b)

Density test output(ot)

Delayed time in external synchronized operation

(dt)

Zero-point phase θ1 (zp)

Zero-point fluid temperature T0 (zT)

RF correction factor (cG)

Zero-point RF data (zG)

Moving average times (ma)

Permissible width of change-rate limit (dx)

Read

parameters

Limit times of change-rate limit (HL)

Measured value

Phase θ2(p), fluid temperature (T),

ambient temperature (A), density (X)

Operation status (ST)

Microwave signal level (SL)

Micro wave factor (F)

RF data(G)

+5V power supply voltage(J)

Reference phase error (pd)

Monitorin

Self-diagnosis

data

Memory check (Mc)

 34 

6 F 8 A 0 5 2 1

Table 5.2.3 Menu Display (2)

Menu 1 Menu 2 Menu 3 Menu 4

Upper density measurement range

(UR)

Setting the upper density measurement range

(UR)

Lower density measurement range

(LR) Setting the lower d ensity measurement range (LR)

Density line slope (a) Setting the density line slope (a)

Density intercept (b) Setting the density intercept (b)

Density test output (ot) Setting the density test output (ot)

Delayed time in external synchronized

operation (dt)

Setting the delayed time in external synchronized

operation (dt)

Zero-point phase θ1 (zp) Setting the zero-point phase θ1 (zp)

Zero-point fluid temperature T0 (zT) Setting the zero-point fluid temperature T0 (zT)

RF correction factor (cG) Setting the RF correction factor (cG)

Zero-point RF data (zG) Setting the zero-point RF data(zG)

Moving average times (ma) Setting the Moving average times (ma)

Permissible width of change-rate limit

(dX)

Setting the permissible width of change-rate limit

(dX)

Parameter

setting

Limit times of change-rate limit (HL) Setting the permissible times of change-

rate limit

(HL)

Zero calib.

Zero calibration Zero calibration implementation verification

Span calib.

Density multiplier (C1) Setting the density multiplier (C1)

Upper angle (UH) Setting the upper angle (UH)

Lower angle (SH) Setting the lower angle (SH)

Angle

rotation

correction Angle rotation (N) Setting the angle rotation (N)

Linearizer density A (LA) Setting the linearizer density A (LA)

Linearizer density B (LB) Setting the linearizer density B (LB)

Linearizer line slope (K1) Setting the linearizer line slope (K1)

Linearizer line slope (K2) Setting the linearizer line slope (K2)

Linearizer line slope (K3) Setting the linearizer line slope (K3)

Electric conductivity correction factor

γ(r)

Setting the electric conductivity correction factor

γ(r)

Zero-point electric conductivity E0 (zE)

Setting the zero-point electric conductivity E0 (zE)

Setting

Linearizer /

electric

conductivity

correction

Measured object electric conductivity

(EC)

Setting the measured object electric conductivity

(EC)

 35 

6 F 8 A 0 5 2 1

Table 5.2.3 Menu Display (3)

Menu 1 Menu 2 Menu 3 Menu 4

Availability of additives correction

(AF)

Selecting the availability of additives correction

(AF)

Display density type (Ad) Selecting the display density type (Ad)

Output density type (Ac) Displaying the output density type (Ac)

Parameter set No. (Ap) Setting parameter set No. (Ap)

Main-object sensitivity (s0) Setting the main-object sensitivity (s0)

Additives sensitivity (s1) Setting the additives sensitivity (s1)

Additives sensitivity (s2) Setting the additives sensitivity (s2)

Additives sensitivity (s3) Setting the additives sensitivity (s3)

Additives sensitivity (s4) Setting the additives sensitivity (s4)

Additives sensitivity (s5) Setting the additives sensitivity (s5)

Loading additive ratio (R1) Setting the loading additive ratio (R1)

Loading additive ratio (R2) Setting the loading additive ratio (R2)

Loading additive ratio (R3) Setting the loading additive ratio (R3)

Loading additive ratio (R4) Setting the loading additive ratio (R4)

Additives

correction

Loading additive ratio (R5) Setting the loading additive ratio (R5)

Output at contact OFF in external

synchronized operation(ho)

Selecting the output at contact OFF in external

synchronized operation (ho)

Availability of density multiplier

switching (D1)

Selecting the availability of density multiplier

switching (D1)

Density multiplier at DI (C2) Setting the density multiplier at DI (C2)

Density multiplier at DI (C3) Setting the density multiplier at DI (C3)

Density multiplier at DI (C4) Setting the density multiplier at DI (C4)

Setting

Others

Availability of automatic

adjustment of angle rotation (NA)

Selecting the availability of automatic

adjustment of angle rotation (NA)

Measurin

g mode

Continuous

operation

and external

synchronized

operation

(OP)

Switching between continuous

operation and external

synchronized operation (OP)

 36 

6 F 8 A 0 5 2 1

5.2.4 Monitoring menu display and operating procedures

1 ：READ PARAMETERS

2 ：MEASURED VALUES

3 ：SELF-DIAGNOSIS

1 ：MONITORING MENU

2 ：SETTING MENU

3 ：MEASURING MODE

Menus of

「1 ：READ PARAMETERS」

Data display of

「2：MEASURED VALUES」

Data display of

「3：SELF-DIAGNOSIS」

Move the cursor to the menu

number with [→] key, and

press [SET] key.

Move the cursor to "1" with [→] key, and

press [SET] key.

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

Note： In actual display, the cursor is

blinking.

 37 

6 F 8 A 0 5 2 1

5.2.5. Setting menu display and operating procedures

When [2: SETTING MENU] is selected, the density ou

tput

signal and the density display are hold in the simulated

values that have been set. This warning screen will

appear once before getting into [2: SETTING MENU].

After making sure that there is no problem, press the [→

]

key to get into [2: SETTING MENU].

1 ：MONITORING MENU

2 ：SETTING MENU

3 ：MEASURING MODE

9:LINEARIZ/CNDUCTVTY

10:ADDITIVES CORRECT

11:OTHERS

Move the cursor to the menu number with

[→] key, and press [SET] key.

Press the [→] key to get into [2: SETTING MENU].

1 ：READ PARAMETERS

2 ：MEASURED VALUES

3 ：SELF-DIAGNOSIS

Move the cursor to "2" with [→] key, and press [SET] key.

Test output will be

valid.

[→] : CONTINUE

[ESC]: CANCEL

5:SET PARAMETERS

6:ZERO CALIBRATION

7:SPAN CALIBRATION

8:ANGLE ROTATION

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

To get into [2: SETTING MENU], it is necessary to further

enter the password "8000". In the initial condition, th

e cursor

is on the forth digit. Therefore, press [DN] key 4 times to set to

"8" and press the [SET] key to get into [2: SETTING MENU]. An

incorrect password will cause the following message to

appear. Return to the screen a

t left by pressing any key and

then enter the correct password once again.

Input password

PASSWORD

:0000

[SET]SET,[ESC]CANCEL

PASSWORD ERROR

PUSH ANY KEY.

[ESC]

(Previous

Menu)

 38 

6 F 8 A 0 5 2 1

5.2.6 Measuring mode display and operating procedures

5.2.7 Reading of parameters display and operating procedures

OP：MEASURING MODE

DATA：CONT

[SET] CHANGE

[ESC] RETURN

OP:MEASURING MODE

RANGE :CONT/EXT

DATA :CONT

[SET] SET,[ESC]CANCEL

1 ：MONITORING MENU

2 ：SETTING MENU

3 ：MEASURING MODE

Move the cursor to "3" with [→] key, and press [SET] key.

Press the SET key to set.

Press the SET key to confirm.

Press the ESC key to cancel.

ach time the

ﾟ

[UP] or [DN] key is pressed, CONT/EXT are

mutually alternated thus making it possible to select an operation

mode. Select "CONT" for normal continuous operations; select

"EXT" for external synchronized operations. For details on the

external synchronized operation, refer to Section 6.7.

[ESC]

(Previous

Menu)

Move the cursor to "1" with [→] key, and press [SET] key,

and select [1 : READ PARAMETERS]

UR:UPPER RANGE

DATA：3.0

[ESC] RETURN

LR:LOWER RANGE

DATA：0.0

[ESC] RETURN

1 ：READ PARAMETERS

2 ：MEASURED VALUES

3 ：SELF-DIAGNOSIS

C：DENSITY MULTIPLIER

DATA：1.000(C1)

[ESC] RETURN

The set value of the density multiplier C, which is used for

density calculation, can be verified. If C2, C3 or C4 is

displayed in the parentheses, it indicates that the density

multiplier switched to by the external voltage signal (DI) is

selected.

The set value of the upper density measurement range

(the density whose current output is 20mA) can be verified.

The set value of the lower density measurement range

(the density whose current output is 4mA) can be verified.

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[UP]

(Next menu)

 39 

6 F 8 A 0 5 2 1

The set value of "density line slope" of

the

arithmetic expression for calculating the density

from the phase measurement data, etc. can be

verified.

The set value of "density intercept" of the arithmetic

expression for calculating the density from the

phase measurement data, etc. can be verified.

Normally, this is set to zero.

Upon getting into [2: SETTING MENU], the current

output and the LED density display are switched to

simulated values. In this screen, the set value of the

simulated value (unit: %TS) can be verified.

In external synchronized operations, the set value

of the delayed time (unit: minute) from when the

external contact input is turned ON until the

measurement starts can be verified. For details,

refer to Section 6.7.

The phase at the time of zero calibration can be

verified.

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

a：DENSITY LINE SLOPE

DATA：0.0840

[ESC] RETURN

b：DENSITY INTERCEPT

DATA：0.0

[ESC] RETURN

ot：DENSTY TEST OUT

DATA：1.5

[ESC] RETURN

dt：DELAYED SYNC.TIME

DATA：0.5

[ESC] RETURN

zp:ZERO POINT PHASE

DATA：80.00

[ESC] RETURN

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[UP]

(Next menu)

The fluid temperature at the time of zero calibration can

be verified.

[ESC]

(Previous

Menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

zT:ZERO WATER TEMP.

DATA：25.00

[ESC] RETURN

 40 

6 F 8 A 0 5 2 1

The set value of the RF correction factor used for density

calculation can be verified. Before shipment, this value is

already set in accordance with the product's characteristics in

the shipping test. If you change this value, it will affect the

performance; therefore, normally, do not change it.

The RF data at the time of zero calibration can be verifie

The set value of the moving average times can be verified.

The variation width (%TS) permitted in the change

rate limit

function can be verified.

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

The times permitted in the chan

rate limit function can be

verified.

cG:RF COEF.

DATA:0.00

[ESC] RETURN

zG:ZERO RF DATA

DATA:50.00

[ESC] RETURN

ma：AVERAGING TIMES

DATA：1

[ESC] RETURN

dx: CHANGE-RATE LIMIT

DATA：0.00

[ESC] RETURN

HL:LIMIT TIMES

DATA：0

[ESC] RETURN

C：DENSITY MULTIPLIER

DATA：1.000

[ESC] RETURN

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[ESC]

(Previous

Menu)

OI：OUTPUT INTERVAL

DATA：HART 0s

[ESC] RETURN

[DN]

(Pre. menu)

[UP]

(Next menu)

hich type of communication method is selected, HART

communication*1 or RS232C communication*2, can be checked

and also the output interval can be checked.

Note *1: HART protocol

is set when the density meter is shipped from

the factory. In addition, 0 second appears as its output interval.

This is because the output for HART communication is

requested by the nature of this protocol from a super-

ordinate

device such as the hand-held terminal AF100 and the output

interval has no meaning.

Note *2: RS232C can be used by adding the data save function.

For how to switch the communication method and how to set

the output interval, refer to the LQ600 Data Save Function

 41 

6 F 8 A 0 5 2 1

5.2.8 Measured values display and operating procedures

5.2.9 Self-diagnosis data display operating procedures

MEASURED VALUES *

p PHASE: 123.56 N=0

T TEMP: 30.00 °C

X DENSITY: 2.34 %TS

Move the cursor to "2" with [→

] key, and press [SET] key to

select [ 2:MEASURED VALUES]

1 ：READ PARAMETERS

2 ：MEASURED VALUES

3 ：SELF-DIAGNOSIS

It is possible to verify the measured phase value (and

the angle rotation N), the measured fluid temperature

value, as well as the density calculated based on them.

[*] in the upper right corner will blink synchronously with

the data updating thus making it possible to verify that

the data updating is definitely taking place.

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

SL:MICROWAVE SIG.LVL

DATA :−53 dBm

[ESC] RETURN

Move the cursor to "3" with [→] key,

and press [SET] key to select [3:SELF-DIAGNOSIS]

ST:STATUS :GOOD

[ESC] RETURN

Whether the phase m

easurement operation is

normally functioning or not can be verified.

The micro wave receive signal level can be

verified. Normally, the level is -45 to -75. (dBm)

1 ：READ PARAMETERS

2 ：MEASURED VALUES

3 ：SELF-DIAGNOSIS

[DN]

(Pre. menu)

[UP]

(Next menu)

[UP]

(Next menu)

 42 

6 F 8 A 0 5 2 1

[ESC]

(Previous

Menu)

The micro wave signal constant can be verified.

Normally, the value is 1825 to 1975.

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

The soundness of the phase measurement unit

can be verified.

The soundness of various memory units can be

verified.

The converter's RF data (concerning the micro

wave phase measurement) can be verified.

Normally, the value is 10 to 70.

The voltage of the 5

volt power supply can be

checked.

G:RF DATA.

DATA : 50.00

[ESC] RETURN

J:+5V POWER SUPPLY

DATA :5.00

[ESC] RETURN

Mc:MEMORY CHECK:GOOD

EPROM :GOOD

RAM :GOOD

EEPROM

:GOOD

ST:STATUS :GOOD

[ESC] : RETURN

pd:REF PHASE

DATA：0.0

[ESC] RETURN

F:MICROWAVE COEF.

DATA : 1910

[ESC] RETURN

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

 43 

6 F 8 A 0 5 2 1

5.2.10 Parameter setting display and operating procedures

Move the cursor to "5" with [→] key, and press [SET] key to select[ 5:SET PARAMETERS]

5:SET PARAMETERS

6:ZERO CALIBRATION

7:SPAN CALIBRATION

8:ANGLE ROTATION

UR:UPPER RANGE

DATA：3.0

[SET] CHANGE

[ESC] RETURN.

LR:LOWER RANGE

DATA：0.0

[SET] CHANGE

[ESC] RETURN

UR:UPPER RANGE

RANGE :1.0-99.9 %TS

DATA : 0.30

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

LR:LOWER RANGE

RANGE :0.0-99.5 %TS

DATA :00.0

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

a:DENSITY LINE SLOPE

DATA：0.0840

[SET] CHANGE

[ESC] RETURN

a:DENSITY LINE SLOPE

RANGE :−0.2000−0.2000

DATA : 0.0840

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

b:DENSITY INTERCEPT

DATA：0.00

[SET] CHANGE

[ESC] RETURN

b:DENSITY INTERCEPT

RANGE :−99.99−99.99

DATA : 00.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

ot:DENSTY TEST OUT.

DATA：1.5

[SET] CHANGE

[ESC] RETURN

ot:DENSTY TEST OUT.

RANGE :0.0-99.9 %TS

DATA : 01.5

[SET] SET,[ESC] CANCEL

[SET](Set)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[SET](Fix)

[ESC](Cancel)

The upper density measurement range

(whose current output is 20mA) is set.

The lower density measurement range

(whose current output is 4mA) is set.

The "density line slope" of the arithmetic expression for

calculating the density from the phase measurement data, etc. is

set. Before shipping, this is s

et in accordance with the aperture,

based on Table 5.1.2. Normally, do not change the setting.

The "density intercept" of the arithmetic expression for calculating

the density from

the phase measurement data, etc. is set. In the

event that the zero point is out of position, it is corrected through

zero calibration; it is also possible to shift the zero point by

changing this coefficient. Normally, set the value to zero.

When [2: SETTING MENU] is selected, the density output

signal and the density display are hold in the simulated values

that have been set.

In this screen, the simulated values are

set in terms of "%TS".

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[UP]

(Next menu)

 44 

6 F 8 A 0 5 2 1

zp:ZERO POINT PHASE

DATA：80.00

[SET] CHANGE

[ESC] RETURN

zp:ZERO POINT PHASE

RANGE :0.00-359.99

DATA : 080.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

zT:ZERO WATER TEMP

DATA：25.00

[SET] CHANGE

[ESC] RETURN

zT:WATER TEMP./ZERO

RANGE :0.00-100.00 (C

DATA : 025.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

The zero-point phase can be set in this menu through

manual input. Normally, the zero-point phase is

automatically set when implementing the zero calibration.

The zero

point fluid temperature can be set in this menu

through manual input. Normally, the zero-point fluid

temperature is automatically set when implementing the zero

calibration.

The RF correction factor used for density calculation is set.

Before shipment, this value is already set in accordance with

the product's characteristics in the shipping test. If you

change this value, it will affect the performance; therefore,

normally, do not change it.

cG:RF COEF.

DATA： 0.00

[SET] CHANGE

[ESC] RETURN

cG:RF COEF.

RANGE : -9.99-9.99

DATA: 0.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

dt:DELAYED SYNC.TIME

DATA：0.5

[SET] CHANGE

[ESC] RETURN

dt:DELAYED SYNC.TIME

RANGE :0.1-99.9 min

DATA : 00.5

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

In external sync

hronized operations, the delayed time from when the

external contact input is turned ON until the measurement starts is set.

For details, refer to Section 6.7.

[ESC]

(Previous

Menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu) [UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

 45 

6 F 8 A 0 5 2 1

VALUE OUT OF RANGE

UR:UPPER RANGE

PRESS ANY KEY TO

RETURN

For all menus, when data outside the allowed range is

input, the error message is displayed, and the wrong data is

refused. Press any key to return, and input adequate data.

[NOTE]：

[DN]

The limit times in the change-rate limit function are set. If the

variation width exceeds dx(%TS) that was set in the previous

menu, the signal is exc

luded for up to the HL times that are set in

this menu. At HL=0, the change

-rate limit function does not work.

[ESC]

(Previous

Menu)

ma:AVERAGING TIMES

RANGE : 1-99

DATA : 01

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

dx:CHANGE RATE LIMIT

RANGE :0.00-9.99 °

DATA: 0.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

zG:ZERO RF DATA

RANGE :0.00-100.00 (C

DATA: 050.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

HL:LIMIT TIMES

RANGE :0-99

DATA: 00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

[ESC]

(Previous

Menu)

The zero

point RF data can be set in this menu through

manual input. Normally, the zero-point RF constant is

automatically set when implementing the zero calibration.

The moving average times are set. If the output averaged for

density control, etc. is needed, the value from 5 to about 10 is

set.

If there is a signal of sharp variation, the change-rate limit fu

nction

excludes this signal to restrict a sudden output variation. In this

menu, the permissible variation width is set in terms of "%TS".

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

UR:UPPER RANGE

DATA：3.0

[SET] CHANGE

[ESC] RETURN

ma:AVERAGING TIMES

DATA：1

[SET] CHANGE

[ESC] RETURN

dx:CHANGE RATE LIMIT

DATA：0.00

[SET] CHANGE

[ESC] RETURN

zG:ZERO RF DATA

DATA： 50.00

[SET] CHANGE

[ESC] RETURN

HL:LIMIT TIMES

DATA： 0

[SET] CHANGE

[ESC] RETURN

[SET](Set)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

 46 

6 F 8 A 0 5 2 1

5.2.11 Zero calibration display and operating procedures

5.2.12 Span calibration display and operating procedures

Move the cursor to "7" with [→] key, and press [SET] key

to select [7:SPAN CALIBRATION]

5:SET PARAMETERS

6:ZERO CALIBRATION

7:SPAN CALIBRATION

8:ANGLE ROTATION

C1:DensityMultiplier

DATA:1.000

[SET] CHANGE

[ESC] RETURN

[ESC]

(Previous

Menu)

C1:DensityMultiplier

RANGE :0.000-9.999

DATA : 1.000

[SET] SET,[ESC]CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

The density multiplier C1 should be set to the suitable

value so that the measured density value is

corresponding to the manual analysis value. For

details, refer to Section 6.5.

Move the cursor to "6" with [→] key, and press [SET] key to select [6:ZERO CALIBRATION]

5:SET PARAMETERS

6:ZERO CALIBRATION

7:SPAN CALIBRATION

8:ANGLE ROTATION

ZERO CAL ＊

p PHASE: 87.93 ° N=0

T TEMP.: 26.55 °C

X DENSITY: 0.02 %TS

ZERO POINT

CALIBRATION

HAS BEEN COMPLETED

[SET](Set)

New data displayed

[ESC]

(Previous

Menu)

Press the [SET] key for zero calibration. In zero calibration, the

phase and the fluid temperature of zero point will be replaced

with the present measured values. And also, angle rotation "N"

will be set to zero.

Note: The display will return to the left display automatically

after approximately one second.

 47 

6 F 8 A 0 5 2 1

5.2.13 Phase angle rotation correction display and operating procedures

Move the cursor to "8" with [→

] key, and press [SET] key

to select [8:ANGLE ROTATION]

5:SET PARAMETERS

6:ZERO CALIBRATION

7:SPAN CALIBRATION

8:ANGLE ROTATION

UH:UPPER ANGLE

DATA : 260

[SET] CHANGE

[ESC] RETURN

SH:LOWER ANGLE

DATA :100

[SET] CHANGE

[ESC] RETURN

UH:UPPER ANGLE

RANGE :240-360 °

DATA : 260

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

SH:LOWER ANGLE

RANGE :0-120

DATA : 100

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

N:ROTATION

DATA：0

[SET] CHANGE

[ESC] RETURN

N:ROTATION

RANGE :−10 - 10

DATA : 00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

UH:UPPER ANGLE

DATA :260

[SET] CHANGE

[ESC] RETURN

Before shipping, this value is set to 260 degrees. Changing

the setting may result in damaging the otherwise normal

operation. Therefore, normally, do not change the setting.

Before shipping, this value is set to 100 degrees. Changing

the setting may result in damaging the otherwise normal

operation. Therefore, normally, do not change the setting.

Normally, the angle rotation N is automatically computed;

therefore, it is unnecessary to change the setting through

manual input. However, there are some cases of high density

measurements which require settings through manual input.

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

 48 

6 F 8 A 0 5 2 1

5.2.14 Linearize/conductity correction display and operating procedures

Move the cursor to "9" with [→] key, and press [SET] key to

select [ 9:LINEARIZ/CNDUCTVTY]

LA:DENSITY A

RANGE :0.00-99.99

DATA :00.60

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

LB:DENSITY B

RANGE :0.00-99.99

DATA : 01.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

K1:COEF.

RANGE:0.00-9.99

DATA : 1.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

K2:COEF.

RANGE:0.00-9.99

DATA : 1.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

K3:COEF.

RANGE :0.00-9.99

DATA : 1.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

9:LINEARIZ/CNDUCTVTY

10:ADDITIVES CORRECT

11:OTHERS

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

In the event of three straight lines which closely analogous

each other, the density of the crossover point A of the 2nd

and 3rd lines is set.

In the event of three straight lines which closely analogous

each other, the density of the crossover point B of the 2nd

and 3rd lines is set.

In the event of three straight lines which closely analogous

each other, the inclination K1 of the 1st line is set.

In the event of three straight lines which closely analogous

each other, the inclination K2 of the 2nd line is set.

In the event of three straight lines which closely analogous

each other, the inclination K2 of the 3rd line is set.

LA:DENSITY A

DATA :0.60

[SET] CHANGE

[ESC] RETURN

LB:DENSITY B

DATA：1.00

[SET] CHANGE

[ESC] RETURN

K1:COEF.

DATA：1.00

[SET] CHANGE

[ESC] RETURN

K2:COEF.

DATA：1.00

[SET] CHANGE

[ESC] RETURN

K3:COEF.

DATA：1.00

[SET] CHANGE

[ESC] RETURN

[DN]

(Pre. menu)

[UP]

(Next menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

r:CNDUCTVTY. COEF.

RANGE : 0.00

r:CNDUCTVTY. COEF.

RANGE :0.00

99.99

[SET](Set)

[SET](Fix)

[DN]

(Pre. menu)

 49 

6 F 8 A 0 5 2 1

 50 

6 F 8 A 0 5 2 1

EC:CONDUCTIVITY

DATA：1.23(LINE)

[SET] CHANGE

[ESC] RETURN

EC:CONDUCTIVITY

RANGE :0.00-10.00

DATA: 00.00

[SET] SET,[ESC] CANCEL

LA:DENSITY A

DATA :0.60

[SET] CHANGE

[ESC] RETURN

MANU/LINE SELECTION

RANGE :MANU/LINE

DATA:(LINE)

[SET] SET,[ESC] CANCEL

MANU/LINE SELECTION

RANGE :MANU/LINE

DATA:(MANU)

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix in

"LINE mode")

[ESC](Cancel)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

By selecting "MANU" (see the screen

above) and then pressing [SET], the

electric conductivity of the measured

object is made settable as the fixed value

through manual input.

After the electric

conductivity is

entered, [SET] is used

to confirm the setting

in MANU mode.

[ESC]

(Cancel)

[UP]

(First menu)

[DN]

(Pre. menu)

[UP] and [DN] is used to switch between

MANU/LINE to select the method for setting

the electric conducti

vity.

By selecting "LINE" and pressing [SET] (see

the screen above), the electric conductivity

is continually corrected with the electric

conductivity of the measured object.

[DN]

(Pre. menu)

 51 

6 F 8 A 0 5 2 1

5.2.15 Additives correction display and operating procedures

Move the cursor to "10" with [

→

] key, and press [SET]

key to select [10:ADDITIVES CORRECT ]

AF:ADDITIVES COMP.

DATA :ON

[SET] CHANGE

[ESC] RETURN

Ad:DISPLAY DENSITY

DATA：TOTAL

[SET] CHANGE

[ESC] RETURN

AF:ADDITIVES COMP.

RANGE :OFF/ON

DATA:ON

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

Ad:DISPLAY DENSITY

RANGE :TOTAL/MAIN

DATA:TOTAL

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

Ac:OUTPUT DENSITY

DATA：TOTAL

[SET] CHANGE

[ESC] RETURN

Ac:OUTPUT DENSITY

RANGE :TOTAL/MAIN

DATA:TOTAL

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

9:LINEARIZ/CNDUCTVTY

10:ADDITIVES CORRECT

11:OTHERS

Each time the [UP] or [DN] key is pressed, OFF/ON are

mutually alternated thus making it possible to select the

availability of the additives correction function. If OFF is

selected, the following screen will not appear.

Each time the [UP] or [DN] key is pressed, TOTAL/MAIN are

mutually alternated thus making it possible to switch between

density calculations to be displayed. If TOTAL is selected, the

density of the entirety in which the pulp and the additives are

combined will be displayed. If MAIN is selected, the density of

only the pulp, which is the main object, will be displayed.

Each time the [UP] or [DN] key is pressed, TOTAL/MAIN are

mutually alternated thus making it possible to switch between

density calculations to be output. If TOTAL is selected, the

density of the entirety in which the pulp and the additives are

combined will be output. If MAIN i

s selected, the density of only

the pulp, which is the main object, will be output.

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[UP]

(Next menu)

 52 

6 F 8 A 0 5 2 1

Ap:PARAMETER SET NO.

RANGE:1 - 10

DATA:01

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

s0:MAIN OBJ. SENS.

RANGE :−9.99 - 9.99

DATA: 1.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

s1:ADDITIVE SENS.

RANGE :−9.99 - 9.99

DATA: 0.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

s2:ADDITIVE SENS.

RANGE :−9.99 - 9.99

DATA: 0.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

s3:ADDITIVE SENS.

RANGE :−9.99 - 9.99

DATA: 0.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

s4:ADDITIVE SENS.

RANGE :−9.99 - 9.99

DATA: 0.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

Ten parameter sets ( tables for each brands) can be

registered for additives correction. This is used for selecting

the parameter set number appropriate to the brand in the

event of mak

ing measurements with additives correction, or

for selecting the parameter set number in the event of newly

registering or changing an individual parameter.

The sensitivity of component 0 (pulp) is set.

The sensitivity of additive 1 is set. In the same manner, the

sensitivities of the following additives 2 to 5 are set.

Ap:PARAMETER SET NO.

DATA：01

[SET] CHANGE

[ESC] RETURN

s0:MAIN OBJ. SENS.

DATA：1.00

[SET] CHANGE

[ESC] RETURN

s1:ADDITIVE SENS.

DATA：0.00

[SET] CHANGE

[ESC] RETURN

s2:ADDITIVE SENS.

DATA：0.00

[SET] CHANGE

[ESC] RETURN

s3:ADDITIVE SENS.

DATA：0.00

[SET] CHANGE

[ESC] RETURN

s4:ADDITIVE SENS.

DATA：0.00

[SET] CHANGE

[ESC] RETURN

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

 53 

6 F 8 A 0 5 2 1

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

s5:ADDITIVE SENS.

RANGE :−9.99 - 9.99

DATA: 0.00

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

R1:ADDITIVE RATIO

RANGE :0.000 - 1.999

DATA: 0.000

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET]Fix)

[ESC](Cancel)

R2:ADDITIVE RATIO

RANGE :0.000 - 1.999

DATA: 0.000

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

R3:ADDITIVE RATIO

RANGE :0.000 - 1.999

DATA: 0.000

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

R4:ADDITIVE RATIO

RANGE :0.000 - 1.999

DATA: 0.000

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

R5:ADDITIVE RATIO

RANGE :0.000 - 1.999

DATA: 0.000

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

The additive ratio of additive 1 (the mass ratio with regard to

component 0) is set. In the same manner, the sensitivities of

the following additives 2 to 5 are set.

s5:ADDITIVE SENS.

DATA: 0.00

[SET] CHANGE

[ESC] RETURN

R1:ADDITIVE RATIO

DATA：0.000

[SET] CHANGE

[ESC] RETURN

R2:ADDITIVE RATIO

DATA：0.000

[SET] CHANGE

[ESC] RETURN

R3:ADDITIVE RATIO

DATA：0.000

[SET] CHANGE

[ESC] RETURN

R4:ADDITIVE RATIO

DATA：0.000

[SET] CHANGE

[ESC] RETURN

R5:ADDITIVE RATIO

DATA：0.000

[SET] CHANGE

[ESC] RETURN

AF:ADDITIVES COMP.

DATA :ON

[SET] CHANGE

[ESC] RETURN

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

 54 

6 F 8 A 0 5 2 1

5.2.16 Other menus display and operating procedures

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

Move the cursor to "11" with [→] key, and press [SET] key to select

[ 11:OTHERS]

ho:4-20mA IN [EXT]

DATA :4mA

[SET] CHANGE

[ESC] RETURN

ho:4-20mA IN [EXT]

RANGE :LAST/4mA/TEST

DATA: 4mA

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

DI:C CHANGE. ON/OFF

RANGE :ON/OFF

DATA: OFF

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

9:LINEARIZ/CNDUCTVTY

10:ADDITIVES CORRECT

11:OTHERS

C2:DensityMultiplier

RANGE :0.000-9.999

DATA: 1.000

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

C3:DensityMultiplier

RANGE :0.000-9.999

DATA: 1.000

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

The simulated output at contact OFF in the event of external

synchronized

operation can be selected. Each time the[UP] or [DN] key is pressed, the mode

display is switched around among LAST VALUE (immediately preceding value),

4mA and TEST OUTPUT (simulated output 0.0 to 99.9%TS when in setting mode).

[SET] is pressed with the mode display to select.

Up to four den

sity multipliers can be switched around by the external voltage

signal (DI) of two points. This is used for switching the brand, etc. On this

menu, whether to perform the density multipliers switching (ON) or not (OFF)

is selected. Each time the [UP] or [DN] key is pressed, ON/OFF are mutually

alternated.

In the event of performing the density multiplier switching by means of the

external voltage signal (DI) of two points, the second density multiplier is set. In

the same manner, the following 3rd and 4th density multipliers are set. The first

density multiplier is performed with the menu for span calibration.

DI:C CHANGE. ON/OFF

DATA :OFF

[SET] CHANGE

[ESC] RETURN

C2:DensityMultiplier

DATA：1.000

[SET] CHANGE

[ESC] RETURN

C3:DensityMultiplier

DATA：1.000

[SET] CHANGE

[ESC] RETURN

[ESC]

(Previous

Menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[UP]

(Next menu)

 55 

6 F 8 A 0 5 2 1

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

[ESC]

(Previous

Menu)

C4:DensityMultiplier

RANGE :0.000-9.999

DATA: 1.000

[SET] SET,[ESC] CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

Although, in the event of high density measurement, the software is

installed in such a manner t

hat the automatic adjustment function of

the phase angle rotation is automatically canceled (OFF) by the

setting full-scale (the upper density measurement range), the

function can also be canceled by force through manual input.

However, normally, set it to "ON".

Each time the [UP] or [DN] key is pressed, ON/OFF are mutually

alternated.

NA:N AUTO ADJUSTMENT

RANGE :ON/OFF

DATA: ON

[SET] SET,[ESC]CANCEL

[SET](Set)

[SET](Fix)

[ESC](Cancel)

ho:4-20mA IN [EXT]

DATA :4mA

[SET] CHANGE

[ESC] RETURN

C4:DensityMultiplier

DATA：1.000

[SET] CHANGE

[ESC] RETURN

NA:N AUTO ADJUSTMENT

DATA：ON

[SET] : CHANGE

[ESC] : RETURN

[ESC] RET

URN

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

[UP]

(Next menu)

[DN]

(Pre. menu)

 56 

6 F 8 A 0 5 2 1

6. OPERATIONS

6.1 Procedures for Preparing and Running

Make preparations and perform operations, that is, density measurements, in accordance with the

following procedure.

Verifying the piping

Verifying the valve closure

Verifying the cable connection

Verifying the converter power-ON & display

Warm-up

Verifying and setting measurement

conditions

Filling up the density meter pipe with drinking

water

(density 0%)

Zero calibration

Pour the fluid to be measured

Span calibration

Startup

See 6.2(1)

See 6.2(2)

See 6.2(3)

See 6.3.1(1)

See 6.3.1(2)

See 6.3.2(1) and (2)

See 6.4(2) to (10)

See 6.4(11) to (15)

See 6.5

Refer to 6.6, 6.7

See 6.6

Normally omitted.

 57 

6 F 8 A 0 5 2 1

6.2 Preparations before Turning on Power

(1) Check piping

Check piping and ensure that there are no loose nuts and bolts, or missing gaskets. Make sure that

the density meter is properly connected in the pipeline.

See the section 3.3, Installation and Piping.

(2) Close the valves

Make sure that the drain valve, sampling valve, and zero water valve, which are installed in the

pipeline, are all closed.

(3) Verifying the cable connection

It is verified that cables are correctly connected to their respective terminal blocks. It is verified

that the ground (grounding resister: less than 100 Ω) is reliably connected to this density meter. In

the event of performing an external synchronized operation, the external contact input signal

connected with ON/OFF of the pump is required; therefore, make sure that the external contact

input signal cable is reliably connected.

6.3 Power on and Preparations for Measuring

6.3.1 Turning power on

(1) Turn the power switch on

Turn on the power switch of the converter and see that the power indicator([POWER]), the

density indicator, and the LCD indicator are lit.

(2) Warming-up

Please warm up for 30 minutes or more to achieve a steady measurement after turning power on.

 58 

6 F 8 A 0 5 2 1

6.3.2 Verifying and setting measurement conditions

(1) Verifications and settings for initial powering-ON

In the event of starting the operation after turning on the power for the first time since installing this

density meter, it is necessary to first set the measurement conditions of the converter. Various

measurement conditions (parameters) are verified and set by means of the setting key while

viewing each menu screen of the LCD indicator. Major measurement conditions are as follows.

① Verifying and setting the measurement range.

Unless otherwise specified in your order, the value here is set to 0 to 3%TS, which is the

provisional set value at the time of factory shipment. Reset the value in accordance with the

operation condition of your plant. If the measurement range is specified in your order, verify

that the value is set as specified. If the value is different, reset it.

② Verifying and setting the operation mode

At the time of factory shipment, this is set to "CONT" (the normal continuous operation

mode). In the event of the density meter being made empty due to pump shutdown or valve

closure, etc. or of using such a method that stops the flow for some time, it is recommended

that "EXT" (the external synchronized operation of switching between ON/OFF of

measurement by means of ON/OFF of the external contact input signal connected with the

pump ON/OFF) be selected.

In the event that the external synchronized operation is selected, the values of“delayed time

(dt)” and “output at contact OFF(ho)”are the provisional set values at the factory shipment.

If the those values are meet to the operation conditions of the plant rest it to an appropriate

value in accordance with the operation conditions of the plant.

③ Verifying and setting the simulated output in setting mode.

Normal measurements are suspended while this density meter is in the setting mode (see "2

SETTING MENU"); thus, both the density display and the density output are given the

simulated values ( density test output (ot)) that are set beforehand. Although, at the time of

factory shipment, the value is provisionally set to "1.5%TS" (50% of the specified full-scale

density if the measurement range is specified), reset it to an appropriate value in accordance

with the operation conditions of the plant.

④ Verifying and setting the moving average times

At the time of factory shipment, the "moving average times" is set to 1 (without the moving

average). If the averaged output is required to be used for density control, etc., set it to about

10. The more the moving average times, the worse the responsiveness becomes with regard

to density variation. Therefore, set it to an appropriate value in accordance with the plant

conditions, including the right balance with the responsiveness.

⑤ For other measurement conditions, the standard values are set. Therefore, it is normally

unnecessary to change these settings.

[NOTE] “10 VARIOUS FUNCTION” describes various functions of the Density Meter LQ500.

If necessary, make additional settings for using these functions appropriately.

(2) Verifications at the time of normal power-ON

In the event that measurement conditions of the converter are already set with the operation not

being the first one since installation, verify the set value while referring to (1).

 59 

6 F 8 A 0 5 2 1

 60 

6 F 8 A 0 5 2 1

6.4 Zero Calibration

All the density meters are calibrated for zero point [zero point phase ( θ1 ) and zero point water

temperature (T0) ] at the time of shipment and parameters are set correctly. You do not need to

calibrate the meter for zero point before using it at site.

In the case of the density readings are found to be way off from the result by manual analysis, or

when you need to read just the zero point for a particular reason, follow the procedures below in

calibrating the zero.

For information on the converter operation and the LCD display regarding zero-point calibration,

please refer to Subsection 5.2.11.

(1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once although this varies

with the operation status) to return to the initial menu display. Next, use the [→] key to move the

LCD indicator cursor to the menu number "2" of "2 SETTING MENU" and then press the [SET]

key to display the warning message saying "Test output will be valid." Make sure that there is no

problem and then press [→] to get into the setting mode. And return to [2: SETTING MENU].

Then, the output will be switched to the simulated output that is set beforehand.

(2) Stopping the flow in the pipeline

If it is allowed to stop the flow in the pipeline where the detector is installed, do so by, for example,

turning off the pump.

● If it is not allowed to stop the fluid flow through the pipeline:

When it is not permitted to stop the flow of the line, bypass the flow by opening the valve on the

bypass pipe.

◆ It is recommended that the bypass piping be installed for adjustment/maintenance purposes

such as zero calibration in the event that the flow in the pipe line cannot be stopped.

(3) Close the upstream valve and downstream valve

Close the shutoff valves on both sides of the detector tightly.

Note: Be sure to close the upstream valve first.

◆ In the event that the density meter is installed on the discharge side of the pump, make sure to

shut the valves starting from the upstream one to prevent the fluid pressure in the density meter

from rising.

(4) Drain the detector pipe

Open the drain valve of the pipeline where the detector is installed to discharge the fluid.

(5) Open the zero water feed port

Open the valve or remove the cap to feed zero water.

◆ When you open the zero water feed port, make sure that the pressure of the fluid in the pipeline

where density meter is installed becomes zero before opening the port. Any remaining pressure

will cause the measured matter to be spurted out. Be careful about this.

(6) Close the drain valve

(7) Supplying zero water

Put zero water (such as tap water) in the pipeline where the density meter is installed through the

zero water supply port by using a vinyl hose.

 61 

6 F 8 A 0 5 2 1

(8) Clean inside of the detector main pipe

When the pipeline where the detector is installed is filled with zero water, open the drain valve to let

out the water from the pipeline.

Clean inside of the pipeline where the density meter is installed by repeating Steps (7) and (8) until

the water density can be said to be zero against the density of the object fluid. (It is not necessary

to make the water clean and transparent.)

(9) Fill up the detector pipe with zero water

After cleaning the pipeline where the density meter is installed, close the drain valve, and fill it with

zero water. Keep adding water while releasing air until water overflows the feed port.

(10) Wait

Leave the detector and water in this state for about 15 minutes.

◆ In the event that the flow of the measured matter can be switched to that of the zero water by

switching over to another valve, etc., it is all right to replace the work activities (2) to (10) with

the relevant method and implement the following zero calibration while allowing the zero water

to keep flowing. Even when switching the flow to that of zero water, wait for about 15 minutes

before implementing the zero calibration.

(11) Selecting the zero calibration menu (see Subsection 5.2.5)

After verifying that the converter is in the setting mode ("2 SETTING MENU") through the

operation of (1), use the [→] key to move the cursor of the LCD indicator to the menu number "6"

of [6 ZERO CALIBRATION] and then press the [SET] key.

(12) Check zero water density reading (see Subsection 5.2.11)

The measured density of zero water is displayed on the density indicator. If the indicator shows [−

0.00], it means that the zero point is off toward the negative.

(13) Zero calibration (see Subsection 5.2.11)

If the zero point is found to be off, press the [SET] key. The data (θ1, T0, zG) of the zero point is

replaced by the current data, thus rendering the angle rotation to N=0 and automatically the density

display to zero. The data (θ1, T0, zG) of the zero point is stored in the memory of the density meter

until the zero calibration is implemented once again, thus making it possible to verify it on the

constant monitoring menu. However, for the purpose of history management, keep a note of the

data.

◆ Unless the zero point is out of place, the zero calibration is suspended by pressing the [ESC]

key.

(14) End zero calibration

This completes the zero calibration. Close the zero water valve, ensure that the sampling valve and

drain valve are closed, then open the shutoff valves on both ends of the detector pipe, downstream

first and upstream next. Lastly, close the shutoff valve on the bypass pipe to restore the flow of the

fluid as before the calibration.

(15) Restoring to the measuring mode

Press the [ESC] key of the converter twice to return the menu of the LCD indicator to the initial

menu display to return to the usual measuring mode from the setting mode. Thus, the measurement

starts.

◆ In the event that the external synchronized operation is selected, the external contact input

signal is changed to ON, thus starting the density measurement after the specified delayed time

has elapsed.

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6.5 Span Calibration

Span calibration is for adjusting the readings of the density meter to the values determined by

manual (off-line) analysis.

For information on the converter operation and the LCD display regarding span calibration, please

refer to Subsection 5.2.12.

(1) Preparations for manual analysis

Prepare following items for manual analysis; a moisture meter (for example, an infrared moisture

meter, with the accuracy or percentage reading down to 0. 1 %), plastic bottles of about l liter with

a wide opening, and plastic beakers of about l00 ml for manual analysis.

(2) Sample fluid for manual analysis

Slightly open the sampling valve on the pipeline and let out the fluid a while before filling a 1-liter

bottle to half. Read and record the density value of the current fluid.

[NOTE] ◆ Make sure to carry out the sampling when the density of the measured matter is in a

stable state with the measured matter flowing.

(3) Manual analysis

Put a part of the sample fluid into a 100-ml plastic beaker, and measure the density of it using drying

and weighing method of analysis.

(4) Calculation of density multiplier

Use the result of analysis to calculate a density multiplier using the following equation after the

manual analysis conducted:

Density multiplier C = A/(M/C’)

where M is the density by the density meter (as read and recorded);

A is the result of the manual analysis

C’ is the density multiplier before span calibration

(Initially, C’ is equal to 1.000 which is the value set in the factory before shipping)

For example, if M = 4.0 ％TS, A = 4.8 ％TS and C’=1.000

C = 4.8 / (4.0/1) = 4.8/4.0 = 1.2

◆ In the case that span calibration has been done already, and density multiplier C is not 1.000, the

new density multiplier C can be calculated in the following way.

For example, if M = 4.8 %TS, A = 4.2 %TS and C0=1.2

C = 4.2 / (4.8/1.2) = 4.2/4 = 1.050

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(5) Setting the density multiplier

(5-1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once

although this varies with the operation status). Next, use the [→] key to move the

LCD indicator cursor to the menu number "2" of "2 SETTING MENU" and then

press the [SET] key to display the warning message saying "Tset output will be vaild."

Make sure that there is no problem and then press [→] to get into the setting mode.

And return to [2: SETTING MENU]. Then, the output will be switched to the

simulated output that is set beforehand.

(5-2) Selecting the converter constant setting menu (see Subsection 5.25)

The menu list of menu numbers 5 to 8 is displayed. Use the [→] key to move the LCD

indicator cursor to the menu number "7" of "7: SPAN CALIBRATION" and then

press the [SET] key to select the menu of "7: SPAN CALIBRATION."

(5-3) Verifying and recording the density multiplier before span calibration

For example, the set value of the current density multiplier as is displayed as in

"DATA: 1.000" is displayed. Record this value.

(5-4) Setting the density multiplier

Press the [SET] key to switch over to the setting menu of the density multiplier and

enter the density multiplier found in (4). Use the [→] key to move from one digit to

another. Use the [UP] and [DN] keys to switch around the number of the relevant

digit. When the input is completed, press the [SET] key to confirm it. Then, the display

will be returned to the immediately preceding menu screen. Verify that the resetting

has been done correctly.

(5-5) Restoring to the measuring mode

Press the [ESC] key twice to return to the initial menu screen and return to the

measuring mode from the setting mode, thus restarting the usual measurement. Verify

that the density display has been changed appropriately in accordance with the setting

of the density multiplier.

◆ In the event that the external synchronized operation is selected, the external

contact input signal is changed to ON, thus starting the density measurement after

the specified delayed time has elapsed.

(6) Completing the span calibration

Thus, the span calibration is completed.

[NOTE] The above describes the method for finding the density multiplier as an example in the

comparison with one-time manual analysis. However, to exclude errors caused by sampling,

it is recommended that as many comparative data as possible be collected to find the density

multiplier from their mean value.

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6.6 Operation

(1) Startup (see Subsection 5.2.5)

When the power is turned ON, the menu setup is automatically changed to the measuring mode

(the state of "1: MONITORING MENU"), thus starting the density measurement. If the meter is in

setting mode (the state of "2:SETTING MENU"), the density measurement operation is started by

pressing the [ESC] key several times (varying between one to three times depending on the

operation status) and thus pulling the menu setup out of the setting mode.

◆ In the event that the external synchronized operation is selected, the menu setup is changed to

the measuring mode and the external contact input signal is turned ON, thus starting the density

measurement after the specified delayed time has elapsed.

(2) Executing the measurement

Executes the density measurement while updating the output values (density current output value;

LED density display; LCD density display on the monitor menu) approximately every second.

(3) Suspending the measurement (see Subsection 5.2.5)

When stopping the measurement, select "2: SETTING MENU" from the initial menu list to get into

the setting mode. Once in the setting mode, the density measurement will be suspended and the

output will be switched to the simulated value that was set beforehand.

◆ In the event that the external synchronized operation is selected, the density measurement is

suspended if the external contact input signal is turned OFF even in the measuring mode. For

details including the output when the density measurement is suspended, refer to Section 6.7.

[NOTE] ◆ In the event the fluid does not flow continuously in the pipeline where the density meter

is installed or the pipeline is temporarily left empty due to the intermittent operation of the

shifting pump, perform the external synchronized operation described in Section 6.7.

◆ When the flow in the pipeline is stopped, solid matters may settle down or float causing

the density in the pipe to lose its uniformity, which in turn may cause the density measured

value to gradually rise or fall. In addition, if the fluid drains out from the pipeline, the

pipeline where the density meter is installed is not completely filled with the fluid, the

density measured value turns out to be erroneous (such as exceeding the full-scale range;

shifting to the minus side; major marginal error). However, this does not mean that the

density meter has failed. Even to avoid such a phenomenon, it is necessary to perform the

external synchronized operation.

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6.7 External Synchronized Operation

This operation mode is used in the event that the measured matter does not flow continuously or the

interior of the detector is temporarily left empty due to the intermittent operation of the shifting

pump to the pipe line on which the density meter is installed. This mode is used to take

measurements only when operating the shifting pump.

To use this operation mode, it is necessary to connect the shifting pump operation and the contact

signal (no-voltage) to the external synchronized input signal pins beforehand.

6.7.1 Movement of the external synchronized operation

Fig.6.7.1 External synchronized Operation

The external synchronized operation, as shown in Fig. 6.7.1, is so designed that the density

measurement is executed only while the pump is being operated; and the density measurement is

suspended while the pump is shut down and the simulated output is issued during this time. The

external synchronized operation is effective in preventing the following inadequate phenomena.

① The pump shutdown causes solid matters to subside or float thus making it impossible to take

density measurements correctly.

② The pump shutdown may cause the fluid to escape from the density meter thus either leaving

it completely empty or insufficiently filled with fluid. In such a situation, the measured value of

the density meter falls into error such as full-scale excess, shift to the minus side, or

occurrence of fluctuation within major marginal error.

It takes time for the pipeline where the density meter is installed to be filled sufficiently with the

fluid after the pump is operated. Here, it is so arranged that the measurement start after the

"delayed time" that is set beforehand has elapsed since receiving the contact signal linked with the

pump operation. Make sure that the delayed time that is set is sufficient for the whole process of

the pipe length and flow, etc. from the pump to the density meter.

As the simulated value when the density measurement is suspended, it is possible to select from

among three options: "4mA", "density measured value immediately preceding the pump shutdown"

and "simulated output in setting mode". The default value is 4mA. However, make sure to select a

simulated output suitable to your system.

Pump operating status

(External contact)

Density measuring

status(Output)

Time

delayed time

Pump operation (ON) Pump shutdown (OFF) Pump shutdown (OFF)

Suspension of density

measurement (Simulated output)

Suspension of density

measurement

(Simulated output)

Execu

tion of density

measurement

(Measured value output)

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6.7.2 Setting the external synchronized operation

(1) Setting the delayed time (see Subsection 5.2.10)

(1-1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once

although this varies with the operation status) to return to the initial menu display.

Next, use the [→] key to move the LCD indicator cursor to the menu number "2" of "2

SETTING MENU" and then press the [SET] key to display the warning message

saying "Test output will be valid." Make sure that there is no problem and then press

[→] to get into the setting mode. And return to [2: SETTING MENU]. Then, the

output will be switched to the simulated output that is set beforehand.

(1-2) Selecting the parameter setting menu (see Subsection 5.25)

The menu list of menu numbers 5 to 8 is displayed. Use the [→] key to move the LCD

indicator cursor to the menu number "5" of "5: SET PARAMETERS" and then press

the [SET] key to select the menu of "5: SET PARAMETERS."

(1-3) Setting the delayed time at the time of external synchronized(see Subsection 5.2.10)

Press the [UP] key five times to select the setting menu of the delayed time at the

time of external synchronized(dt: DELAYED SYNC. TIME). Press the [SET] key to

get into the set value input screen and then enter an appropriate value (the time

sufficient for the measured matter to flow up to the density meter and fill up the pipe

after the shifting pump operation is started). Use the [→] key to move from one digit

to another. Use the [UP] and [DN] keys to switch around the number of the relevant

digit. When the input is completed, press the [SET] key to confirm it. Then, the display

will be returned to the immediately preceding menu screen. Verify that the resetting

has been done correctly.

(2) Setting the simulated output at measurement suspension (at external contact OFF)

(see Subsection 5.2.16)

As the simulated output when the measurement is suspended (at external contact OFF), it is

possible to select from among three options as shown in Table 6.7.1. Make sure to select a

simulated output suitable to your system.

Table 6.7.1 Density Display and Output at Measurement Suspension

in External Synchronized Operation

Mode Density Indicator Display Output (4 - 20mA)

"4mA" (Standard) Held in 0%TS Output held in 4mA

"TEST"

same as the simulated output

value in setting mode

Same as the simulated output value

correspondence output in setting

mode

"LAST"

Holds the density measured value

immediately before OFF

Holds the density measured value

correspondence output immediately

before OFF

(2-1) Selecting the "OTHERS" setting menu (see Subsection 5.2.5)

Continuing on from (1), press the [ESC] key to return to the display of menus 5 to 8 in

setting mode. Press the [UP] key to switch to the display of the next menus 9 to 11.

Use the [→] key to move the cursor of the LCD indicator to the menu number "11" of

"11: OTHERS" and press the [SET] key to select the "11: OTHERS" menu.

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(2-2) Setting the output mode at contact OFF in external synchronized operation (see

5.2.16)

The current output mode at contact OFF in external synchronized operation is

displayed in the initial menu "ho: 4-20mA IN [EXT]" of "11: OTHERS". To make

changes, it is necessary to press the [SET] key and place the software in the setup

state. Each time the [UP] or [DN] key is pressed, the mode display is switched

around from "LAST" (immediately preceding value), through "4mA" to "TEST" (the

simulated output value in setting mode). Press the [SET] key on the display in the

selected mode to confirm. The screen is returned to that of the immediately preceding

menu screen. Make sure that the resetting is done correctly.

(2-3) Returning to the measuring mode

Press the [ESC] key twice to return to the initial menu and return from the setting

mode to the measuring mode to resume the normal measurement.

(3) Setting the operation mode

(3-1) Selecting the operation mode change menu (see Subsection 5.2.6)

In the initial menu, use the [→] key to move the cursor of the LCD indicator to the

menu number "3" of "3: MEASURING MODE" and then press the [SET] key to get

into the operation mode menu.

(3-2) Verifying and setting the operation mode

The current operation mode is displayed at "DATA" of the LCD indicator . "CONT"

refers to the mode of taking measures continuously without relying on the status of the

external contact signal, whereas "EXT" refers to the external synchronized operation

mode. If the current setting is "CONT," press the [SET] key to get into the setup

screen of operation mode; press the [UP] or [DN] key to switch the set value of the

operation mode to "EXT"; and press the [SET] key to confirm. The screen is returned

to the immediately preceding menu screen. Make sure that the resetting has been

done correctly.

(4) Starting the external synchronized operation

With the settings above, measurement ON/OFF are proceeded with as shown in Fig.6.7.1 in

accordance with external synchronized contact signal ON/OFF.

6.8 Functions Related to Operation

To enable you to use the Density Meter Type LQ500 more appropriately in various processes and

situations, the device is equipped with various functions including the moving average, the

change-rate limit, the electric conductivity correction, the additive correction, the linearizer and the

density multiplier switching by external signals. Make settings necessary for using these functions

appropriately where necessary. For details, please refer to Chapter 10.

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7. MAINTENANCE

7.1 Precautions for Maintenance, Inspection and Parts

Replacement

WARNING

■Be sure to set the power

switch on the equipment to the

OFF position before doing

maintenance or inspection

inside the equipment or

replacing its parts.

Failure to observe this can cause

electric shock or equipment failure.

■Be sure to set the power

switch on the equipment to the

OFF position before replacing

the fuse.

Failure to observe this can cause

electric shock.

■Do not touch the terminal

block during maintenance or

inspection. If it is necessary to

touch the terminal block, set the

power switch on the equipment

to the OFF position in advance.

Failure to observe this can cause

electric shock.

DON’T

■Do not attempt disassemble

or modify the equipment.

Failure to observe this can cause

electric shock or equipment

failure.

The label shown at left is placed near

each terminal block on the equipment

to which power is supplied. Be careful

of electric shock.

Yellow

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7.2 Maintenance and Inspection Items

Periodic maintenance and inspection is necessary for reliable measurement over a long period of

time. Since the density meter has no mechanically moving parts, however, it does not require

replacement of mechanism elements in a normal operating environment.

Compare the density measured value and the manually analyzed value in the cycle shown in Table

7.1. If necessary, implement the span calibration after implementing the zero calibration. Clean up

the detector when it is necessary.

The spare parts that must be kept on hand are the fuses in Table 7.2.

Table 7.1 Maintenance and Inspection Items

Item Cycle Remarks

Comparison of density meter measured

value with manually analyzed value Any time At least three samples are

desirable.

Check the appearance of detector

(accumulation of dirts, scratches, etc) Any time

[NOTE] ◆ If the density meter measured value deviates from the manually analyzed value to the

extent of causing obstacles, implement the span calibration (changing the density

multiplier C) while referring to Section 6.5.

◆ If the density meter measured value greatly deviates from the manually analyzed value by

less than half or more than twice, implement the span calibration after implementing the

zero calibration while referring to Section 6.4 and 6.5.

◆ If the density meter is used to measure process flow which contains plenty of wool or

fabric substances, these substances may accumulate on the detector, thus perform

maintenance and inspection, and cleaning periodically (every 3 months).

Table 7.2 Spare Parts

Name Specifications Qty

Fuse

2A(T),250V cartridge, glass tubular fuse,

5.2mm outer dia. x 20mm long

Shape/characteristics: 5NM or equivalent (based on JIS C

6575)

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[NOTE] ◆ Fuses are parts with expected life span. Therefore, replace them periodically.

(Recommended replacement cycle: about 3 years)

◆ In general, the service life of an electronic part becomes shorter at higher ambient

temperature. There is a DC switching power supply in the converter that contains

electrolytic capacitors. The service life is about 10 years at the ambient temperature of

20°C or about 3 years at 50°C. For stable use of the meter for many years, it is desirable

to replace these parts in time. When replacing the capacitors, please contact Toshiba's

Service Dept.

◆ In the event that the characters on the LCD display becomes weak in contrast or edge,

it is considered that the LCD display unit has reached the end of its life. Although such

unsatisfactory visibility may not affect the performance of the density measurement, the

display unit should be replaced if it interferes with the operation. When replacing the

display unit, contact Toshiba's Service Dept.

◆ Regarding the arrester (converter), part replacement differs depending on how often

lightning occurs.

Suppose lightning (induction lightning) occurs twice a year, service life expires in 5 years

and replacement is necessary.

For arrester replacement, an entire arrester unit (board: converter) should be replaced.

To replace the unit, please contact our service personnel.

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8. TROUBLESHOOTING

8.1 Troubleshooting

If any trouble has developed, make a careful check and take appropriate steps. Table 8.1 shows

possible troubles, their causes, and remedies. If anything wrong occurs, refer to the table below and

take the necessary steps. If that does not remedy the trouble, send information on the trouble, in as

much detail as possible, and self-diagnosis data to our Service Department.

Table 8.1 Troubleshooting (1)

No.

Trouble Cause Remedy

AC power is not supplied.

Check terminals [L1] and [L2] on terminal

block with voltage tester. If AC voltage is

not supplied, supply AC power in

accordance with specifications.

1 Converter power cannot

be switched on.

Fuse (2A) is blown. Replace fuse.

2 ALARM indicator lights;

density meter error

contact output.. Fault in the density meter

In accordance with Section 8.2, perform

self-diagnosis data check and restoration

operations. If ALARM indicator lights

again, send self-diagnosis data to our

Service Department.

3 While the flow is

stagnant, the indicator

is in error.

The fluid in the pipeline

where the detector is

installed drained out.

While the flow is

stagnant, the measured

density value slowly

increases or decreases.

Density becomes uneven

because the measurement

object fluid in the fluid in the

pipe starts to sinks or

floats, thus causing the

density in the center portion

of measured fluid to

increase or decrease.

Use the externally synchronized

operation.

See Section 6.7.

(Density meter is not faulty.)

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Table 8.1 Troubleshooting (2)

No.

Trouble Cause Remedy

Inappropriate density

correction factor setting. Calibrate span as described in

section 6.5.

Air accumulates and keep

staying inside the detector.

Or substance being

measured is sediment.

Very slow flow can be the cause.

Make the flow faster by using

smaller bore detector to prevent air

or substance from remaining in the

detector. If this does not solve the

problem, resort to vertical piping.

Large quantity of bubbles are

contained in the fluid.

Find out where the air is brought

in, and make necessary

adjustments. Keep mixer vanes

under water. Position the pump

inlet low enough. Keep fluid

pressure high (0.1MPa or more is

recommended).

Large quantity of bubbles are

contained in the fluid.

Remedy the locations containing

air bubbles. An example is to

position the blade of the agitator in

the tank below the fluid level.

Another example is to position the

inlet port of the pump sufficiently

below the fluid level.

Take necessary steps to make

the fluid pressure high (0.1MPa or

more is recommended).

It is desirable to install the meter

on the discharge port of the pump.

At the same time, make sure that

the meter is placed as far as

possible (closer to the pump) from

the pipe outlet for air release.

Too much difference

between measured

density and manual

analysis value

Measured density

varies widely and does

not agree with manual

analysis value.

The pipeline where the

detector is installed is not

filled with the substance to

be measured that flows.

Or air remains in the pipeline

where the detector is

installed.

Keep the tube always filled up with

fluid by closing the downstream

valve slightly or add a relief valve.

Installing the density meter on the

outlet side of the pump can help

eliminate the cause of those

troubles. Vertical piping is

recommended for filling the pipe.

7 Suitable location

varies depending on

density. Zero point is off. Calibrate zero point as described

in Section 6. 4, then calibrate

span described in Section 6.5

The electric conductivity of

the measured matter is too

high.

Check if the electric conductivity

is within the specified range.

If the electric conductivity is

beyond the range, send its

measurement results and

self-diagnosis data to our Service

Department.

8 Output is either

unstable or unsuitable.

Converter failure Send self-diagnosis data to our

Service Department.

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8.2 Error Indications and Recovery Operations

If an error occurs to the density meter, the error indicator [ALARM] will light up and a contact

signal (OFF) will be output.

Check the self-diagnosis data for any faulty values in accordance with the following steps.

(1) Monitor menu display (see Subsection 5.2.4)

First of all, press the [ESC] key of the converter several times (normally once although this

varies with the operation status) to return to the initial menu display. Next, use the [→] key to

move the LCD indicator cursor to the menu number "1" of "1: MONITORING MENU" and

then press the [SET] key. (The cursor of the initial state is located on "1".)

(2) Switching to the self-diagnosis menu (see Subsection 5.2.7)

In the monitoring menu, use the [→] key to move the cursor of the LCD indicator to the menu

number "3" of "3: SELF-DIAGNOSIS" and then press the [SET] key.

(3) Checking the self-diagnosis data (see Subsection 5.2.9)

Press the [UP] key to move from one self-diagnosis data to another to check for any error.

◆ To detect which numerical range is an error value, please refer to Table 8.2.

(4) Terminating the self-diagnosis

After checking, press the [ESC] key twice to return to the initial menu display.

If an error value is found, turn off all the power switches of the converter and then turn them back

on. The self-diagnosis is executed all over again by the powering-ON. If an error is displayed again

as a result of the self-diagnosis, send the relevant item to our Service Department.

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Table. 8.2 Self-diagnosis data

Data Item

Symbol

Item name Data Status Data (Numeric value range;

normal data range, status)

ST Status

[STATUS]

• Normal [GOOD]

• Warning [WARNING.]

Whether the phase

measurement operation is

normally functioning or not can

be verified.

Microwave

recieved signal

level

[MICROWAVE

SIG. LVL]

Without error judgment based

on data numeric • Usual range: -90 to -40 (dBm)

Microwave coef.

［MICROWAV

E COEF.］

Without error judgment based

on data numeric • Normal range: 1825 ∼ 1975

Data

concerning

microwave

phase

measurement

[RF DATA]

Without error judgment based

on data numeric • Normal range + 10.0 ∼ + 80.0 (°C)

J +5 V voltage

[+5V POWER

SUPPLY]

Without error judgment based

on data numeric • Normal range 4.5 ∼ 5.5（V）

Reference

phase error

［REF

PHASE］

Without error judgment based

on data numeric • Normal range - 9.9 ∼ + 9.9 (°C)

Memory check

［MEMORY

CHECK］

Normal ［GOOD］

Abnormal [N.G.]

EPROM, RAM, EEPROM are

checked

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9. CORRECTIONS IN

DENSITY CALCULATION

This density meter, which operates on the basis of phase difference measurement by microwaves

makes automatic corrections to the measured phase angel for the fluid temperature and phase

angel rotation before making the density calculations for the measured substance.

This chapter describes the methods for corrections and the density calculations.

9.1 Density Calculation

This density meter measures the phase lag θ1 in the density zero water (zero water), which is the

basis, and the phase lag θ2 in the measured matter, the difference △θ(= θ2 - θ1) of which

being proportional to the density is used to obtain the density. The density (X) of the measured

matter is calculated in accordance with the following equation.

X= C ×（ a × △θ ）＋ b

where

X ： Measured density value (%TS)

△θ ： Phase difference. △θ = θ2−θ1 (degrees)

a ： Density line slope;

b ： Density intercept;

c ： Density multiplier (Density correction factor.)

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9.2 Various Kinds of Corrections

9.2.1 Phase angle rotation correction

The phase is available only from 0 degree to 360 degrees. If the phase incrementally reaches 360

degrees, it returns to 0 degree, from which it keeps incrementing again. If the phase decreasingly

reaches 0 degrees, it returns to 360 degrees, from which it keeps decreasing again. Accordingly,

the concept of phase angle rotation is incorporated into this density meter and some corrections

have been made so to allow the phase to change to an unlimited extent. In such a manner, this

density meter has overcome the limit that the phase is available only from 0 to 360 degrees, thus

realizing high density measurement.

Phase angle rotation correction refers to obtaining the real phase angle θ2 by judging the number

of rotations the dummy angle θ2' belongs to based on the measured values coming before and

after.

θ2 = θ2' + N x 360 (degrees)

N: Number of rotations

Set N=0 at the time of zero calibration, making the number of rotations to zero for the phase

angle

θ1 at zero point.

If the θ2' exceeds 360 degrees to enter into the next rotation, set N=1. If it again exceeds

360 degrees to enter into the rotation after the next rotation, set N=2.

(N will move up to 2 only if the meter is of large diameter and the density is high.)

On the other hand, if θ2' goes below zero (0) degree to enter into the previous rotation,

decrease N by one (1). In other words, when it goes into the -1st rotation from the 0th one,

set N=−1; and when into the 0th rotation from the 1st one, set N=0.

Note: The description above is the basics regarding the phase angle rotation correction. Normally,

it is all right to use the density meter without being aware of this correction. However, in the

event of measuring high density, etc., special setups and actions may be needed. For details,

refer to Section 9.3.

9.2.2 Fluid temperature correction

The phase tends to change in a straight line with regard to the fluid temperature. In this connection,

fluid temperature correction is performed on θ2 as follows to obtain the phase difference △θ

△θ={θ2−α（Τ−Τ０

）}− θ1

△θ : △θ: Phase difference [degrees]

θ2 : Actual phase angle of measurement object fluid [degrees]

θ1 : Phase during zero water measurement (degrees)

(Measured during zero calibration, and set in advance as a constant)

α : Fluid temperature correction factor (degrees/℃)

T : Temperature of measurement object fluid (℃)

T 0 : Water temperature during zero calibration (℃)

(Measured during zero calibration, and set in advance as a constant)

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9.2.3 RF correction

In addition to the fluid temperature correction, the density meter is equipped with the RF correction

function in accordance with the features of the converter. The correction is performed on θ2 as

follows to obtain the phase difference △θ.

△θ={θ2−α（Τ−Τ０）−δ（Ｇ−Ｇ０）}−θ1

△θ : Phase difference [degrees]

θ2 : Actual phase angle of measurement object fluid [degrees]

θ１

: Phase during zero water measurement (degrees)

(Measured during zero point calibration, and set in advance as a constant)

α : Fluid correction factor (degrees/℃)

Τ : Temperature of measurement object fluid (℃)

Τ０

: Water temperature during zero adjustment (℃)

(Measured during zero point calibration, and set in advance as a constant)

δ : RF correction factor

Ｇ : RF data during measurement

Ｇ０

: Zero point RF data

(Measured during zero point calibration, and set in advance as a constant)

9.2.4 Ambient temperature correction

In addition to the fluid temperature correction and RF correction, the density meter is equipped with

the ambient temperature correction function. The correction is performed on θ2 as follows to

obtain the phase difference △θ.

<Note> Since ambient temperature correction function is an option, ambient temperature

correction factor ß must be set “0.00”.

△θ={θ2−α（Τ−Τ０）−δ（Ｇ−Ｇ０）ß（Ａ‐Ａ０

）}−θ1

△θ : Phase difference (degrees)

θ2 : Actual phase angle of measurement object fluid (degrees)

θ１

: Phase during zero water measurement (degrees)

(Measured during zero point calibration, and set in advance as a constant)

α : Fluid correction factor (degrees/℃)

Τ : Temperature of measurement object fluid (℃)

Τ０

: Water temperature during zero adjustment (℃)

(Measured during zero point calibration, and set in advance as a constant)

δ : RF correction factor

Ｇ : RF data during measurement

Ｇ０

: Zero point RF data

(Measured during zero point calibration, and set in advance as a constant)

ß : Ambient temperature correction factor (degrees/℃)

Ａ : Ambient temperature (℃)

Ａ０

: Ambient temperature during zero adjustment

(Measured during zero point calibration, and set in advance as a constant)

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9.3 Phase Angle Rotation Correction (Details)

This section describes the special setups and actions required for cases of measuring high density.

In normal measurement, it is unnecessary to be aware of the phase angle rotation correction, which

is performed automatically.

9.3.1 Care point concerning phase angle rotation

As described in 9.2.1, the number of phase angle rotations N is incremented or decreased judging

from the values before and after the measured value. Such a processing requires the condition that

the measured phase value varies continuously in accordance with the density of the measured

matter. If the density meter detector is empty, however, the continuity of measured phase values is

damaged thus making a normal phase angle rotation correction impossible, which in turn may cause

the number of phase angle rotations to jump to a faulty value. If the number of phase angle rotations

N is inappropriate, the density calculation result will also turn out to be erroneous. Once such a

trouble occurs, it is necessary to reset the number of phase angle rotations N to an appropriate

value through manual input.

9.3.2 Phase angle rotation in external synchronized operation

The trouble previously described will be solved by performing the "external synchronized

operation" incorporated into this density meter. In the external synchronized operation, if the

contact signal is switched OFF synchronized with the pump shutdown, not only the output is

switched to the simulated one but also the immediately preceding value is kept as the number of

phase angle rotations N.

9.3.3 Outline of automatic adjustment function of phase angle rotations

Furthermore, this density meter is equipped with the function of "automatic adjustment of phase

angle rotations." This function judges whether the measured density calculated with the number of

phase angle rotations N is proper or not in terms of the set density measurement range, etc. and

then adjusts the number of phase angle rotations either incrementally or decreasingly if necessary.

Even when the density meter detector is temporarily made empty thus causing the number of phase

angle rotations N to jump to an inappropriate value, this function is also used to fill up the density

meter detector once again with the matter to be measured and automatically adjust the number of

phase angle rotations N to an appropriate value, which in turn will render an appropriate value for

the measured density. While the density meter detector is left empty, the measured phase value

itself comes to have an indefinite value, which in turn will render the measured density indefinite.

Therefore, if the density meter detector could be made empty, it is desirable to perform the external

synchronized operation.

9.3.4 Judgment conditions and adjustments for automatic adjustment of phase angle

rotations

The judgment conditions and adjustments regarding the automatic adjustment of phase angle

rotations and the measured density are listed in Table 9.3.1.

Table 9.3.1 Judgment Conditions and Adjustments

for Automatic Adjustment of Phase Angle Rotations

Measured Density Automatic Adjustment of Phase Angle Rotations N

Xmin = Less than −4(%TS) Incremented (N = N+1)

−4∼C×a×360(%TS) Unadjusted

Xmax = More than C x a x 360 (%TS) Decreased (N = N-1)

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In Table 9.3.1 above,

C: Density multiplier (Varies with the character of the measured matter.)

a: Density slope (A constant determined by the meter size)

The values of the respective meter size in C = 1, 0.7 and 1.8 as examples of the value Xmax in which

N is judged to be too large are listed in Table 9.3.2. Each of the values is the result of the value

when C=1 in Table 9.3.2 multiplied by C.

Table 9.3.2 Value of XMAX (%TS)

Aperture

C 50mm

80mm

100mm 150mm

200mm

250mm

300mm

0.7 42.34

26.46

21.17 14.11 10.57 8.57 7.06

1.0 60.48

37.80

30.24 20.16 15.12 12.24 10.08

1.8 108.86

68.04

54.43 32.29 27.22 22.03 18.14

9.3.5 Restrictions and invalidation in applying the automatic adjustment of phase angle

rotations

This function of automatic adjustment of phase angle rotations involves some application

restrictions. For example, it cannot be applied to the case of measuring high density as follows.

<Example> In the case of meter size: 150 mm; upper density measurement range: 20%TS; and

density multiplier: 0.7

As shown in Table 9.3.2, Xmax=14.11(%TS). Therefore, when the measured density

exceeds 14.11(%TS), the adjustment of decreasing the number of phase angle

rotations applies as shown in Table 9.3.1, thus making it impossible to measure the

density in excess of 14.1(%TS).

To solve the problems as shown in the example above, measurement is taken so that the function of

automatic adjustment of phase angle rotations is automatically invalidated if the upper measured

density range exceeds Xmax.

Check the operating conditions to see if the function of automatic adjustment of phase angle

rotations is applicable or not.

[NOTE] In the cases where the automatic adjustment of phase angle rotations is not applicable, after

the density meter detector is temporarily made empty, it is necessary to reset the phase angle

rotation to an appropriate value through manual input. In the cases, it is more desirable to

perform the external synchronized operation.

9.3.6 Invalidation by setting the automatic adjustment of phase angle rotations

As mentioned in the previous subsection, the density meter is equipped with the function of

automatically invalidating the function of automatic adjustment of phase angle rotations, based on

the conditions for setting the upper density measurement range and the density multiplier.

However, in the state of starting the operation, the upper density measurement range is determined

but the density multiplier is not determined yet (determined in the span calibration described in

Section 6.5), thus the operation is started with a provisional value (initial value: 1). Therefore, the

function of automatic adjustment of phase angle rotations, which is supposed to be invalidated, may

not be invalidated, making it impossible to take an appropriate measurement (including the span

calibration). This applies to the case in which the original density multiplier is smaller than the

current set value (the initial value 1 in the initial operation).

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There are two ways of dealing with such a case.

One is to automatically invalidate the function of automatic adjustment of phase angle rotations by

provisionally setting a sufficiently small value such as about 0.5 for the density multiplier C so that

Xmax is smaller than the upper density measurement range.

Another is to forcibly invalidate the function of automatic adjustment of phase angle rotations. The

latter's setting method is described below.

(1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once although this

varies with the operation status) to return to the initial menu display. Next, use the [→] key to

move the LCD indicator cursor to the menu number "2" of "2 SETTING MENU" and then

press the [SET] key to display the warning message saying "Test output will be valid." Make

sure that there is no problem and then press [→] to get into the setting mode. And return to [2:

SETTING MENU]. Then, the output will be switched to the simulated output that is set

beforehand.

(2) Selecting the "OTHERS" setting menu (see Subsection 5.2.5)

Initially, the menu list of menu numbers 5 to 8 is displayed. However, by pressing the [UP] key

once, this display can be switched to the menu list of the next menu numbers 9 to 11. Use the

[→] key to move the LCD indicator cursor to the menu number "11" of "11: OTHERS" and

then press the [SET] key to select the menu of "11: OTHERS."

(3) Verifying or changing ON/OFF of automatic adjustment of phase angle rotations

(see Subsection 5.2.16)

Press the [DN] key once (or the [UP] key five times) to display "NA: N AUTO

ADJUSTMENT". On this screen, it is possible to verify whether the automatic adjustment of

phase angle rotations is valid (ON) or invalid (OFF). Here, if it is necessary to alter the setting,

press the [SET] key to switch to the setup display of the automatic adjustment of phase angle

rotations. Each time the [UP] or [DN] key is pressed, the set value is alternated between ON

and OFF. Set the value to OFF and then press the [SET] key to confirm it. The screen will be

returned to the immediately preceding one; make sure that the value is correctly reset.

(4) Returning to the measuring mode

Press the [ESC] key twice to return to the initial menu screen and return to the measuring

mode from the setting mode to resume the normal measurement.

9.3.7 Actions after invalidating the automatic adjustment of phase angle rotations

After invalidating the automatic adjustment of phase angle rotations to make it possible to take

measurements appropriately even at high density in excess of Xmax, implement the span

calibration in accordance with Section 6.5 and set the density multiplier to an appropriate value.

While referring to Table 9.3.2, use this reset density multiplier to calculate the maximum density

Xmax, which can be applied to the function of automatic adjustment of phase angle rotations and

judge whether this Xmax is greater than the value of the upper density measurement range that is

set.

If Xmax is greater than the upper density measurement range, the function of automatic adjustment

of phase angle rotations is applicable. Therefore, return the function of automatic adjustment of

phase angle rotations which is set to "OFF" in Subsection 9.3.6 to“ON”.

If Xmax is smaller than the upper density measurement range, the function of automatic adjustment

of phase angle rotations is invalid. Therefore, it is unnecessary to return the function of automatic

adjustment of phase angle rotations which is set to "OFF" in Subsection 9.3.6 to “ON”.

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9.3.8 Return to the normal through manual input of the phase angle rotations

If the function of automatic adjustment of phase angle rotations is not applicable whereas the

density meter detector is temporarily made empty thus causing the number of phase angle rotations

to jump to a faulty number, the number of phase angle rotations fails to return to an appropriate

value even when the density meter detector is refilled with the matter to be measured, thus allowing

the measured density to remain in error. In this connection, it is necessary to reset the phase angle

rotation to an appropriate value through manual input. The setting method is described below.

(1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once although this

varies with the operation status) to return to the initial menu display. Next, use the [→] key to

move the LCD indicator cursor to the menu number "2" of "2 SETTING MENU" and then

press the [SET] key to display the warning message saying "Test output will be valid." Make

sure that there is no problem and then press [→] to get into the setting mode. And return to [2:

SETTING MENU]. Then, the output will be switched to the simulated output that is set

beforehand.

(2) Selecting the "ANGLE ROTATION" setting menu (see Subsection 5.2.5)

In the state that the menu list of menu numbers 5 to 8 is displayed, use the [→] key to move the

LCD indicator cursor to the menu number "8" of "8: ANGLE ROTATION" and then press the

[SET] key to select the menu of "8: ANGLE ROTATION".

(3) Verifying or changing the number of phase angle rotations (see Subsection 5.2.13)

Press the [DN] key once (or the [UP] key twice) to display "N: ROTATION". On this screen,

it is possible to verify the number of phase angle rotations. Here, press the [SET] key to switch

to the setup display of the number of phase angle rotations and enter an appropriate value

(note). At the initial digit, use the [UP] or [DN] key to select whether to attach the "-" symbol

or not. Use the [→] key to move to the digit, and use the [UP] or [DN] key to alter the

numeric value of the relevant digit. When entering input is completed, press the [SET] key to

confirm it. The screen will be returned to the immediately preceding one; make sure that the

value is correctly reset.

Note: In many cases, an appropriate value for the number of phase angle rotations N is

0. In the event that the density or the fluid temperature is high, this value may be 1.

In the event that the density or the fluid temperature is low, it may be -1. Set either

of 0, 1 and -1 and then verify that the measured density at this time has returned to

an appropriate value.

(4) Returning to the measuring mode

Press the [ESC] key twice to return to the initial menu screen and return to the measuring

mode from the setting mode to resume the normal measurement.

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10. VARIOUS FUNCTIONS

10.1 Various Functions and their Outlines

The density meter LQ500 is equipped with various functions to be used more appropriately in

various processes and in various situations. Depending on the process being applied or the method

of using the meter, some functions may not be necessary. Based on the descriptions below, choose

the functions you need. Table 10.1.1 describes the functions equipped in this meter and outlines.

Table 10.1.1 Various Functions

Function Name Application and Outline Remarks

1) External

synchronized

operation

Perform this external synchronized operation in the event that the

pump to the pipe line on which the density meter is installed is

operated intermittently and the object of measurement does not

flow continuously or in the event that the detector is temporarily

made empty.

See Section 6.7.

2) Moving

average

Use this function in the event of requiring the averaged output to

be used for density control, etc. The function is useful for

suppressing the deflection width of the output.

See Section

10.2.

3) Change-rate

limit

In the event of a sudden change in the density or a sudden

variation in the output due to intrusion by bubbles, etc., this

function is used to exclude these signals to restrain the sudden

output change.

See Section 10.3

4) Electric

conductivity

correction

This function is used in the event that the electric conductivity of

the matter to be measured has changed substantially. Since this

does not usually become a real problem, it does not need this

function usually. When using this function, however, it is

necessary to separately prepare a electric conductivity meter,

install it on a proper location and input the electric conductivity

signal into the density meter.

See Section

10.4.

5) Additives

correction

In the event that the brand (with varying components and

compound ratio) of the matter to be measured is switched from

one to another, this function is used to omit the span calibration

in terms of each brand by registering beforehand the list in which

the sensitivity and compound ratio of the respective components

are input (up to ten lists can be registered) and then selecting the

list number.

See Section

10.5.

6) Linearizer Since the density meter has a satisfactory linear relationship

between its actual density and instrument output, a linearization

correction is normally unnecessary. Therefore, this function is

provided as a measure to deal with special cases.

See Section

10.6.

7) Density

multiplier switching

This function is to switch around up to four density multipliers by

means of ON/OFF of two external voltage signals(DI). The

See Section

10.7.

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by external signal function can be used to facilitate the density measurement of up

to four different types of matters (brand) which differ in

measurement sensitivity.

10.2 Moving Average

10.2.1 Function of moving average

Assuming that the moving average times is "n", this function is to calculate and output the mean

value of n preceding measured values each time. The function is used when an averaged output is

required such as for density control. This function is also useful for suppressing the deflection width

of output.

The value that can be set as the moving average times "n" is 1 to 99. Setting 1 for "n" means that no

moving average takes place.

10.2.2 Setting of the moving average times

(1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once although this

varies with the operation status) to return to the initial menu display. Next, use the [→] key to

move the LCD indicator cursor to the menu number "2" of "2 SETTING MENU" and then

press the [SET] key to display the warning message saying "Test output will be valid." Make

sure that there is no problem and then press [→] to get into the setting mode. And return to [2:

SETTING MENU]. Then, the output will be switched to the simulated output that is set

beforehand.

(2) Selecting the parameter setting menu (see Subsection 5.2.10)

In the state that the menu list of menu numbers 5 to 8 is displayed, use the [→] key to move the

LCD indicator cursor to the menu number "5" of "5: SET PARAMETERS" and then press the

[SET] key to select the menu of "5: SET PARAMETERS."

(3) Verifying or setting the moving average times (see Subsection 5.2.10)

Press the [DN] key three times (or the [UP] key eleven times) to display "ma: AVERAGING

TIMES". On this screen, it is possible to verify the set value of the moving average times. If it

is necessary to change the setting, press the [SET] key here to switch to the setup display of

the moving average times and enter an appropriate value. Use the [→] key to move to the digit,

and use the [UP] or [DN] key to alter the numeric value of the relevant digit. When entering

input is completed, press the [SET] key to confirm it. The screen will be returned to the

immediately preceding one; make sure that the value is correctly reset.

(4) Returning to the measuring mode

Press the [ESC] key twice to return to the initial menu screen and return to the measuring

mode from the setting mode to resume the normal measurement.

10.2.3 Cautions in using the moving average function

Setting an excessively large value for the moving average times will result in deteriorated

responsiveness. Therefore, make sure to set a value appropriate to the process situation and the

required responsiveness.

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10.3 Change-rate limit

10.3.1 Outline of change-rate limit function

In the event of a sudden change in the density or a sudden variation in the output due to intrusion by

bubbles, etc., this function is used to exclude these signals to restrain the sudden output change. By

setting two measurement conditions of permissible variation width and limit times, the conditions for

change-rate limit are set.

It is possible to set 0.00 to 9.99(%TS) as the permissible variation width and 0 to 99 times as the

limit times. Setting the limit times to zero means that no change-rate limit is imposed.

10.3.2 Examples of operating the change-rate limit function

The change-rate limit function is described with examples below.

The setting conditions shall be as follows.

* Width of change-rate limit function: 0.5%TS

* Times of change-rate limit function: Twice

The conditions that are set as above mean the following.

① All the variations within 0.5%TS are permitted and output without modification.

② Variations exceeding 0.5%TS are limited up to twice, outputting the immediately preceding

signal in place of the relevant signals.

③ Variations in excess of 0.5%TS which continue three times are judged to be signal variations

resulting from actual density variations, thus outputting the 3rd signal without modification.

Example 1: Operation for temporary and sudden signal variation

Fig.10.3.1 Original Signal

0.0

0.5

1.0

1.5

2.0

2.5

3.0

1 2 3 4 5 6 7 8 9 10

Signal No..

Density signal (%TS)

Fig.10.3.2 Output Signal After Variation Factor

Restriction

0.0

0.5

1.0

1.5

2.0

2.5

3.0

12345678910

Signal No..

Density signal

(%TS)

Fig.10.3.1 shows the original signal before the change-rate limit is processed. No.1 to No.4 are

varying within a small width; however, only signals No.5 and No.6 are varying in excess of 0.5%TS

deviation from the immediately preceding signal No.4. No.7 to No.10 are back to a small width of

variation.

In the event that the above-set change-rate limit is applied to such signals, the output signals are as

shown in Fig.10.3.2. Since signals No.5 and No.6 are varying in excess of 0.5%TS with regard to

signal No.4, signal No.4 is output instead with regard to No.5 and No.6. Signal No.7 is output

without modification. Signals No.8 to No.10, which are also within the variation width of 0.5%TS

with regard to the respective immediately preceding signals, are output without modification.

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Example 2: Signal change in the shape of steps

Fig.10.3.3 Original Signal

0.0

0.5

1.0

1.5

2.0

2.5

3.0

12345678910

Signal No.

Density signal (%TS)

Fig.10.3.4 Output Signal After change-rate limit

0.0

0.5

1.0

1.5

2.0

2.5

3.0

12345678910

Signal No.

Density signal (%TS)

Fig.10.3.3 shows the original signal before the change-rate limit is processed. The numeric values

along the horizontal axis refer to the signal numbers. No.1 to No.4 are varying within a small width;

however, signal No.5 is varying in excess of 0.5%TS with No.6 to No.10 remaining in a state not

very different from No.5.

In the event that the above-set change-rate limit is applied to such signals, the output signals are as

shown in Fig.10.3.4. Since signals No.5 and No.6 are varying in excess of 0.5%TS with regard to

signal No.4, signal No.4 is output instead with regard to No.5 and No.6.

Signals No.7 to No.10, which are within the variation width of 0.5%TS with regard to the

respective immediately preceding signals, are output without modification.

10.3.3 Cautions in using the change-rate limit factor

(1) Setting the change-rate limit width

The value can be set within the range of 0.00%TS to 9.99%TS. If the width is set to as little a

value as the normally indicated deflection width, restricted signals will increase and indications

will vary in the shape of steps. Therefore, set a sufficiently large value so that the variation

width is reliably judged to be in error.

(2) Setting the times of change-rate limit

Signals that are made faulty due to intrusion of large bubbles, etc. may affect two neighboring

signals in relation to measurement timing. Therefore, although the change-rate limit has an

effect even when it is applied only once, it is desirable to set the times of change-rate limit at

least to two times in order to reliably exclude error signals. In the event of density variations in

the shape of steps as shown in Example 2, a delay increases in accordance with the set times.

Set an appropriate value for the times in accordance with the responsiveness required of the

plant.

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10.3.4 Setting the change-rate limit

(1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once although this

varies with the operation status) to return to the initial menu display. Next, use the [→] key to

move the LCD indicator cursor to the menu number "2" of "2 SETTING MENU" and then

press the [SET] key to display the warning message saying "Test output will be valid". Make

sure that there is no problem and then press [→] to get into the setting mode. And return to [2:

SETTING MENU]. Then, the output will be switched to the simulated output that is set

beforehand.

(2) Selecting the parameter setting menu (see Subsection 5.2.5)

In the state that the menu list of menu numbers 5 to 8 is displayed, use the [→] key to move the

LCD indicator cursor to the menu number "5" of "5: SET PARAMETERS" and then press the

[SET] key to select the menu of "5: SET PARAMETERS".

(3) Verifying or changing the change-rate limit width (see Subsection 5.2.16)

Press the [DN] key two times (or the [UP] key twelve times) to display "dx: CHANGE

RATE LIMIT". On this screen, it is possible to verify the set value of the change-rate limit

width. If it is necessary to change the setting, press the [SET] key here to switch to the setup

display of the change-rate limit width and enter an appropriate value for the width. Use the

[→] key to move to the digit, and use the [UP] or [DN] key to alter the numeric value of the

relevant digit. When entering input is completed, press the [SET] key to confirm it. The screen

will be returned to the immediately preceding one; make sure that the value is correctly reset.

(4) Verifying or changing the times of change-rate limit (see Subsection 5.2.16)

Continuing on from the operation in (3) above, press the [UP] key once to display "HL: LIMIT

TIMES". On this screen, it is possible to verify the set value of the change-rate limit times. If

it is necessary to change the setting, press the [SET] key here to switch to the setup display of

the change-rate limit times and enter an appropriate value for the times. Use the [→] key to

move to the digit, and use the [UP] or [DN] key to alter the numeric value of the relevant digit.

When entering input is completed, press the [SET] key to confirm it. The screen will be

returned to the immediately preceding one; make sure that the value is correctly reset.

Note: If the times of change-rate limit is set to zero, the change-rate limit function is

made inactive.

(5) Returning to the measuring mode

Press the [ESC] key twice to return to the initial menu screen and return to the measuring

mode from the setting mode to resume the normal measurement.

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10.4 Electric Conductivity Correction

10.4.1 Standard conductivity correction factors

The indication of the density meter varies with the conductivity of the measured object fluid;

however, the variance is as small as approx. 0.15%TS to 1mS/cm change in conductivity and

usually practically negligible, thus making it unnecessary to input the conductivity meter signal to

perform electric conductivity correction. In the event that the conductivity change is large and thus

its impact is not ignoble, make sure to use the electric conductivity correction function. The formula

for this correction including the other corrections described in Chapter 9 is as follows.

△θ={θ2 -α（Τ-Τ０）-δ（Ｇ-Ｇ０）-ß (A-A0) -γ(E-E０)} -θ1

△θ : Phase difference (degrees)

θ2 : Actual phase angle of measured object fluid (degrees)

θ1 : Phase during zero water measurement (degrees)

(Measured during zero calibration, and set in advance as a constant)

α : Fluid temperature correction factor (degrees/℃)

Τ : Fluid temperature of measured object fluid (℃)

Τ０

: Water temperature during zero calibration

(Measured during zero calibration, and set in advance as a constant)

δ : RF correction factor

Ｇ : RF data during measurement

Ｇ０

: Zero point RF data

(Measured during zero calibration, and set in advance as a constant)

γ : Electric conductivity correction factor (degrees/(mS/cm))

E : Electric conductivity of measured object fluid (mS/cm)

E０

: Zero water conductivity (mS/cm)

ß : Ambient temperature correction factor (degrees/℃)

Ａ : Ambient temperature (℃)

Ａ０

: Ambient temperature during zero adjustment

(Measured during zero point calibration, and set in advance as a constant)

At the time of factory shipment, the [electric conductivity correction factor γ] is set to zero for all

the products. If the conductivity change of the measured object fluid is large, input the electric

conductivity signal in accordance with "Fig.3.5 External Connection Diagram" and then reset the

[electric conductivity correction factor γ].

Table 10.4.1 shows the "standard values" of electric conductivity correction factors as well as the

"density line slope (a)" required in the event of obtaining electric conductivity correction factors

through calculation from measured values. The "standard values" shall be applicable when the

range of the electric conductivity meter used for conductivity correction is

0 to 10 mS/cm.

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Table 10.4.1 Standard Values of Electric Conductivity Correction Factor (γ)

(Based on Electric Conductivity Meter with a Range of 0 to 10 mS/cm)

and Slope of the Line (a)

Meter size

(mm) a γ (Standard value)

50 0.168 0.9

80 0.105 1.4

100 0.084 1.8

150 0.056 2.7

200 0.042 3.6

250 0.034 4.5

300 0.028 5.4

In the event of performing a electric conductivity correction on this density meter, it is a basic

principle to externally connect and use a conductivity meter with a range of 0 to 10 mS/cm. In the

event of using a conductivity meter of another range (0 - R mS/cm), obtain the conductivity

correction factor in accordance with the following formula.

γ=(R/10)×γ0

γ0 : Standard value of electric conductivity correction factor (see Table 9.1)

R: Upper range of conductivity meter used

For example, if the meter size is 150 mm, the standard value of the electric conductivity correction

factor of the density meter is 2.7 and a conductivity meter with a range of 0 to 5 mS/cm is

connected to this,

γ = (R/10)×γ0

= (5×10)×2.7

= 1.35

is used as the correction factor.

[NOTE] ◆ In the event of implementing a electric conductivity correction, separately prepare a

electric conductivity meter and install it on a location where the conductivity can be

measured correctly (where the measurement object process is appropriate).

◆ The "standard values" of electric conductivity correction factors shown in Table 10.4.1

are criteria. It is necessary to use the linear relationship that exists between the

conductivity and the output to survey and determine the electric conductivity correction

factor in terms of each actual measured object fluid. See Subsection 10.4.2.

◆ In the event of not executing any electric conductivity correction, set the "electric

conductivity correction factor (γ)" to zero.

10.4.2 How to obtain and set a correction factor

Obtain and set a electric conductivity correction factor as appropriate to the applicable process in

accordance with the following procedure.

(1) To set the density multiplier to 1.000

(1-1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once

although this varies with the operation status) to return to the initial menu display.

Next, use the [→] key to move the LCD indicator cursor to the menu number "2" of

"2: SETTING MENU" and then press the [SET] key to display the warning message

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saying "Test output will be valid." Make sure that there is no problem and then press

[→] to get into the setting mode. And return to [2: SETTING MENU]. Then, the

output will be switched to the simulated output that is set beforehand.

(1-2) Selecting the span calibration menu (see Subsection 5.2.5)

The menu list of menu numbers 5 to 8 is displayed. Use the [→] key to move the LCD

indicator cursor to the menu number "7" of "7: SPAN CALIBRATION" and then

press the [SET] key to select the menu of "7: SPAN CALIBRATION."

(1-3) Verifying or recording the density multiplier (see Subsection 5.2.12)

For example, the set value of the current density multiplier C' is displayed as in

"DATA: 1.265". Record this value.

(1-4) Setting the density multiplier to "1.000" (see Subsection 5.2.12)

Press the [SET] key to switch to the setup display of the density multiplier and reset

the density multiplier to 1.000. Use the [→] key to move to the digit, and use the [DN]

key to alter the numeric value of the relevant digit. When entering input is completed,

press the [SET] key to confirm it. The screen will be returned to the immediately

preceding one; make sure that the value is correctly reset.

(2) To suspend the electric conductivity correction function

(with the conductivity correction factor set to 0.00)

(2-1) Returning to the initial screen of the setting mode

Continuing on from (1-4) above, press the [ESC] key once to return to the menu list

display of the menu numbers 5 to 8 of the setting mode.

(2-2) Selecting the linearizer /conductivity menu (see Subsection 5.2.5)

Press the [UP] key once to switch to the menu list display of the next menu numbers

9 to 11. Use the [→] key to move the cursor of the LCD indicator to the menu number

"9" of "9: LINEARIZ/CNDUCTVTY" and then press the [SET] key to select the

menu of "9: LINEARIZ/CNDUCTVTY".

(2-3) Setting the electric conductivity correction factor to 0.00 (see Subsection 5.2.14)

Press the [UP] key five times (or the [DN] key three times) to display "r:

CNDUCTVTY COEF". Press the [SET] key here to switch to the setup display of

the electric conductivity correction factor and then input 0.00 for the electric

conductivity correction factor. Use the [→] key to move to the digit, and use the [DN]

key to alter the numeric value of the relevant digit. When entering input is completed,

press the [SET] key to confirm it. The screen will be returned to the immediately

preceding one; make sure that the value is correctly reset.

(3) To measure the electric conductivity of the measured object fluid

(3-1) Selecting the monitoring menu (see Subsection 5.2.4)

Press the [ESC] key twice to return to the initial menu screen and return to the

measuring mode from the setting mode to resume the normal measurement. Use the

[→] key to move the cursor to the menu number "1" of the LCD indicator's "1:

MONITORING MENU" and then press the [SET] key to select "1: MONITORING

MENU".

(3-2) Selecting the measured value data display menu (see Subsection 5.2.4)

In the monitoring menu list of the menu numbers 1 to 3, use the [→] key to move the

cursor to the menu number "2" of the LCD indicator's "2: MEASURED VALUES"

and then press the [SET] key to select "2: MEASURED VALUES".

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(3-3) Reading and recording measured conductivity and density values

The externally installed conductivity meter is used to measure the conductivity (E1) of

the measured object fluid while, at the same time, reading the measured density (M1)

from the LCD indicator or from the LED display outside the converter. Take notes of

each measured value.

Next, while varying the conductivity of the measured object fluid, measure as well as

take notes of the conductivity (E2) and the measured density (M2). At this time, take

care to prevent the actual density of the measured object fluid from changing.

E1, E2 : Conductivity (mS/cm)

M1, M2: Measured density value (%TS)

(4) To calculate the electric conductivity correction factor

Obtain the electric conductivity correction factor (γ) in accordance with the following

arithmetic expression.

γ= ΔM/(a×ΔE)

a : Density line slope (see Table 9.1: varies with the aperture)

ΔM : Measured density value difference (M2 – M1)

ΔE : Measured conductivity value difference (E2 – E1)

For example, if the meter size is 150 mm, it follows that a = 0.056. At this time, let's assume

that the conductivity and the measured density (specified value) are as follows respectively.

1st measurement: E1=1 mS/cm M1=4.0%TS

2nd measurement: E2=2 mS/cm M2=4.2%TS

From here, it follows that

DE =1 mS/cm

DM=0.2 %TS

and the conductivity correction factor is

γ = 0.2/(0.056×1)

= 3.57

(5) To correct the electric conductivity correction factor by means of the conductivity meter's

range.

In the event that the range of the conductivity meter being used is other than "0 to 10 mS/cm",

correct the conductivity correction factor in accordance with the conductivity meter range

while referring to the method of calculating the correction factor in the event that the

conductivity meter range is other than the standard described in Subsection 10.4.1.

(6) To set the electric conductivity correction factor

In the same manner as the operation described in (2), set the electric conductivity correction

factor to the value calculated in (4) and (5).

(7) To return the density multiplier to its original value

In the same manner as the operation described in (1), return the density multiplier to its original

value which has been previously recorded.

(8) To return to the measuring mode

Press the [ESC] key twice to return to the initial menu screen and return to the measuring

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mode from the setting mode to resume the normal measurement

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10.5 Additives Correction Factor

10.5.1 Additive Correction Function

This function refers to handling the different brands made from main material with various

additives. If the physical property of the measured object fluid varies, it is necessary to set the

density multiplier for a value appropriate to this difference. Even with multiple types of measured

objects mixed together (mixed fluid), if their compound ratio is regarded to be consistent, it is

possible to measure the density of the entirety or the density of a particular type among them. In

measuring the density of such mixed fluid, each time the physical property and compound ratio of

the objects included in the fluid differ (that is, the brand is different), it is necessary to set the

density multiplier in accordance with the brand of the relevant mixed fluid.

By selecting an applicable brand number from about ten brands registered in advance, this additive

correction function calculates the density in accordance with the brand, thus making it possible to

omit the span calibration in terms of each brand.

Using this function in a simplified manner, by selecting the span calibration factor(density

multiplier) in terms of each brand from the brand list registered in advance, it is possible to simplify

the span calibration. For information on the simplified way of this function, refer to "10.5.5

Simplified way of using the additive correction function".

The contents to be registered into the brand list are as follows.

Table 10.5.1 Brand List

Sensitivity (Note 2) Ratio of mixture (Note 3)

Component

Note 1 Sign

Setting range Set at

shipping

Sign

Setting range Set at

shipping

Comp. 0 s0 -9.99 to +9.99

1.00 -- -- ---

Comp.1 s1 -9.99 to +9.99

0.00 R1 0.000 to 1.999 0.000

Comp.2 s2 -9.99 to +9.99

0.00 R2 0.000 to 1.999 0.000

Comp.3 s3 -9.99 to +9.99

0.00 R3 0.000 to 1.999 0.000

Comp.4 s4 -9.99 to +9.99

0.00 R4 0.000 to 1.999 0.000

Comp.5 s5 -9.99 to +9.99

0.00 R5 0.000 to 1.999 0.000

(Note 1) Component 0 is the main component. Components 1 to 5 are the additives #1 to #5.

(Note 2) Sensitivity values for components #0 to #5 are to be registered for each of 10 brands.

Usually, the sensitivity value for main component s, 0 is set to “1.000.” The sensitivity

values of typical additives are shown in Table 10.5.2. Register s1 to s5 referring to this

table. For the sensitivity values of additives other than the ones shown in Table 10.5.2,

please contact Toshiba. Whenever you send us a sample of additives, we can measure

their sensitivity values. Sensitivity values are measured in the same way as used for span

calibration for each of additives (measured density reading / density by manual analysis).

Table 10.5.2

Additives name Sensitivity

Calcium carbonate

0.45

Titanium oxide 0.13

Zinc oxide 0.12

Talc 0.61

(Note 3) For each formula in the list of 10 brand, the ratio of mixture for the components #1 to 5 is

to be entered. A ratio of mixture is a ratio of a component against the component 0 (main

component) in weight.

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10.5.2 Density calculation

Following calculation modes can be selected.

(1) Additives correction ON (To be made) / OFF (Not to be made)

(a) Set value at shipping the density meter: OFF

(2) When additives correction is "ON"(to be made), you can select two calculation modes.

(b) Total density of mixture including the additives (TOTAL)

In the mode (2) above, each of the density outputs (LED display of the converter, and the

current output in 4 to 20mA dc) can be either (b) or (c) separately.

* Set value at shipping: Both the density display and the density current output are in

"TOTAL" of (b) above.

(a) Density without additives correction

Following calculation is made (same density calculation as in section 9.1.3)

Xa = C × (a × Δθ) +b

where, Xa : Measured density value

Δθ : Phase difference that varies in proportion to the actual density

a : Density line slope

b : Density intercept (normally zero).

C : Density multiplier

(b) Additives correction to be made for getting Total Density of whole mixture including the

additives (TOTAL)

b)(aC

R5R4R3R2R11

Xb +×××

⋅

=Δθ

where, Xb : Density of the whole mixture

s0 : Sensitivity of the main component only

s1 : Sensitivity of additive #1, R1 : Mixture ratio of additive #1

s2 : Sensitivity of additive #2, R2 : Mixture ratio of additive #2

s3 : Sensitivity of additive #3, R3 : Mixture ratio of additive #3

s4 : Sensitivity of additive #4, R4 : Mixture ratio of additive #4

s5 : Sensitivity of additive #5, R5 : Mixture ratio of additive #5

Δθ : Phase difference that varies in proportion to the diameter

a : Density line slope determined by diameter

b : Intercept of the line (normally zero).

C : Density multiplier

Xc s s RsRsRsRsRCab=+⋅+⋅+⋅+⋅+⋅× × × +

0 1 1 2 2 3 3 4 4 5 5 ( )∆θ

where, Xc : Density of main component

Others are same as in (b)

(Note) When using the additives correction functions of (b) or (c), set the density multiplier C to

1.000. Following procedure is recommended for making span adjustment. At the

beginning of the use of correction, for a whole mixture of a formula, compare the

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measured density readings you get in dry method (dry weight) and in manual analysis,

and when required, make span adjustment by adjusting the density multiplier C of the

whole mixture.

10.5.3 Procedures for using the additives correction function

The procedure for the additives correction function is described as following steps.

Obtain sensitivities of the components ....... Refer to table 10.5.2.

Select the formula list number for registering (parameters)

Set sensitivities of main component and additives (s0 to s5)

Set mixture ratios of additives (R1 to R5)

Perform zero point calibration .................. Refer to [6.4 Zero Point Calibration]

Set the density multiplier to 1.000

Select ON for additives correction

Select calculation mode for additives correction

(TOTAL or MAIN)

Select the brand list number that corresponds with the formula

(Parameter set)

Let the liquid mixture of selected brand flow.

Read the density indication(M), and simultaneously

sample the substance to measure.

Measure the density (A) of the sample by manual analysis

Calculate C as below, then fine adjust C (density multiplier)

C=(A/M)x1 (Default value of C is 1)

Start measuring Density When brand is changed

You can set for up to

ten formulas. Each

of which can have

up to five additives,

to which

sensitivities and

ratios can be

entered individually.

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10.5.4 How to set the additives correction function

(1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once although this

varies with the operation status) to return to the initial menu display. Next, use the [→] key to

move the LCD indicator cursor to the menu number "2" of "2 SETTING MENU" and then

press the [SET] key to display the warning message saying "Test output will be valid.". Make

sure that there is no problem and then press [→] to get into the setting mode. And return to [2:

SETTING MENU]. Then, the output will be switched to the simulated output that is set

beforehand.

(2) Selecting the additives correction menu (see Subsection 5.2.5)

Initially, the menu list of the menu numbers 5 to 8 is displayed. Press the [UP] key once to

switch to the menu list display of the next menu numbers 9 to 11. Use the [→] key to move the

cursor of the LCD indicator to the menu number "10" of "10: ADDITIVES CORRECT" and

then press the [SET] key to select the menu of "10: ADDITIVES CORRECT".

(3) Verifying and changing the various settings for additives correction (see Subsection 5.2.15)

(3-1) Selecting the OFF/ON of the additives correction function

Verify the set value of the initial menu "AF: ADDITIVES COMP." of the additives

correction. "OFF" means that the additives correction function is unavailable, thus not

displaying the detailed menu concerning the additives correction. When using the

additives correction function, press the [SET] key to switch to the OFF/ON selection

display of the additives correction. Each time the [UP] or [DN] key is pressed, the set

value alternates between "OFF" and "ON". With the value set to "ON", press the

[SET] key to verify it. The screen will be returned to the immediately preceding one;

make sure that the value is correctly reset.

(3-2) Selecting a density display (see subsection 10.5.2)

Continuing on from (3-1), press the [UP] key to switch to the display of "Ad:

DISPLAY DENSITY". In this menu, decide whether the density display should be

the density of the entire mixed fluid including the additives "TOTAL" or the density of

the pulp only "MAIN". When changing the setting, press the [SET] key to switch to

the selected display, use the [UP] or [DN] key to switch between "TOTAL" and

"MAIN" and then press the [SET] key at the status to be set.

(3-3) Selecting a density display (see Subsection 10.5.2)

Continuing on from (3-2), press the [UP] key to switch to the display of "Ac:

OUTPUT DENSITY". In this menu, decide whether the density current output of 4 to

20mA should be the density of the entire mixed fluid including the additives (TOTAL)

or the density of the pulp only (MAIN). When changing the setting, press the [SET]

key to switch to the selected display, use the [UP] or [DN] key to switch between

"TOTAL" and "MAIN" and then press the [SET] key at the status to be set.

(3-4) Selecting a parameter set number (a brand list number)

Continuing on from (3-3), press the [UP] key to switch to the display of "Ap:

PARAMETER SET NO.". In this menu, select a parameter set number. Press the

[SET] key to switch to the setup display and then input the parameter set number. Use

the [→] key to move to the digit, and use the [UP] or [DN] key to alter the numeric

value of the relevant digit. When entering input is completed, press the [SET] key to

confirm it. The screen will be returned to the immediately preceding one; make sure

that the value is correctly reset.

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(3-5) Setting the sensitivity and the compound ratio

Continuing on from (3-4), press the [UP] key to switch to the menu of "s0: MAIN

OBJ SENS." and then, after switching to the setup display by pressing the [SET] key,

input the sensitivity of the main object (component 0). Use the [→] key to move to the

digit, and use the [UP] or [DN] key to alter the numeric value of the relevant digit.

When entering input is completed, press the [SET] key to confirm it. The screen will

be returned to the immediately preceding one; make sure that the value is correctly

reset. Continue on to switch to the next setup menu display with the [UP] key. And, in

accordance with the same procedure, set the sensitivities s0 to s5 of components

(additives) 1 to 5 as well as compound ratios R1 to R5 of components (additives) 1 to

(4) Returning to the measuring mode

Press the [ESC] key twice to return to the initial menu screen and return to the measuring

mode from the setting mode to resume the normal measurement.

10.5.5 Simplified Correction on Additives

Previous section describes complete correction on additives in which sensitivities and ratios of

mixture per additive were taken into account in calculation. By using only a sensitivity for the whole

mixture (a mixture of pulp and additives), the additives correction can be simplified as described

below. In this simplified correction, a density multiplier (sensitivity) is obtained separately for each

formula and entered into the list of formula. When a formula is changed, you need to select a new

formula number to change the density mulyiplier to continue measuring density. Up to ten formulas

can be entered into the list.

Procedures for a simplified correction is as follows. See the section 10.5.1 to 10.5.3 for basic

information, and refer to section 10.5.4 Operations for correction.

● Procedures for simplified correction of additives.

Set the density multiplier C to 1.000

Select Calculation Mode for additives correction...No (correction)

Perform zero calibration ....................... See “6.4 Zero calibration”

Carry out span calibration for each brand, and obtain sensitivity as below.

Sensitivity = (Measured density reading)/(Density obtained by manual analysis)

Enter the sensitivity of a formula into the sensitivity s0

of the component 0 in the formula list.

Select (TOTAL) [total density of a mixture,

with additives correction] for the calculation mode

Select a brand list number

that corresponds with the mixture to be measured.

Run the fluid to measure and measure density

When the brand is changed.

See Note 1.

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(Note1) Set all sensitivities and ratios to 0.00 and 0.000 respectively for all of the components 1 to

5. (Or to the default values set at shipping.)

10.6 LINEARIZER SETTING

10.6.1 Linearizer function

Depending on the kind of substance to be measured, there may not be a linear relationship between

the values measured by the meter and those obtained by manual analysis. Particularly, in the

measurement of low density substance of about 1%, the meter tends to show readings in higher

value at or less than 0.5% or show lower for the density about 1.5% or higher. In such a case, the

1inealization is necessary because it is difficult to match meter-measured values with manual

analysis values with a single density multiplier over a wide range of densities from low to high.

Suppose there is a curve relationship such as that shown in figure 10.6. 1 between meter-measured

values (using a density multiplier of 1.000) and manual analysis values when a certain substance is

measured at varying degrees of density. To make linealization, the curve is approximated by three

straight lines of A, B, and C.

•

••

••••

•

••

0.6 1.0 1.5

a c

計器測定値 X O （濃度補正係数 1.00 ）

0.8

1.2

1.5

手

分

析

値

濃

度

％

Figure 1 0.6.1 Linearizer setting Diagram

Let the meter-measured value (XO) at the bend of the lines A and B (crosspoint) as density A, and

the value at lines B and C to be density B. Also let the slopes of lines A, B, and C as K1, K2, and K3

respectively.

Instrument reading X0 (density multiplier 1.00)

Manual ly analyzed density %

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Meter-measured value XO (density multiplier 1.000) before linearization and meter-measured

value X after linearization have the following relationship.

For X 0 ≤ A X = C ( K 1 X 0 )

For A < X 0 ≤ B X = C { K 1 A ＋ K 2 ( X 0 − A)}

For B < X 0 X = C { K 1 A ＋ K 2 ( B − A ) + K 3 ( X 0 − B )}

where

C: Density multiplier.

The procedures for making 1inearizer lines and setting them into the meter are as follows:

(1) Create a graph

Plot the relationships between the meter-measured value (X0) at a density multiplier of 1.000

and manual analysis value to make into a graph as shown in figure 10.6.1.

(2) Draw approximate straight lines

Draw in three straight lines that approximate the relationships.

(3) Read densities at crosspoints

Read the meter-measured values (XO) at the cross-points of these lines and get cross-point

densities A and B.

(4) Get the slopes of the lines.

Calculate the slopes of the straight lines as follows to determine K1, K2, and K3.

K 1 = d / a

K 2 = e / b

K 3 = f / c

● Defaults are set as : A = 0.60, B = 1.00, K1 = 1.00, K2 = 1.00, K3 = 1.00

Example of set values (Fig. 10.6.l)

A = 0.6 (%), B = 1.0 (%)

K 1 = 0.8 / 0.6 = 1.33、K 2 = 0.4 / 0.4 = 1.00、K 3 = 0.3 / 0.5 = 0.6

10.6.2 Linearizer setting

(1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once although this

varies with the operation status) to return to the initial menu display. Next, use the [→] key to

move the LCD indicator cursor to the menu number "2" of "2 SETTING MENU" and then

press the [SET] key to display the warning message saying "Test output will be valid.". Make

sure that there is no problem and then press [→] to get into the setting mode. And return to [2:

SETTING MENU]. Then, the output will be switched to the simulated output that is set

beforehand.

(2) Selecting the linearizer menu (see Subsection 5.2.5)

Initially, the menu list of the menu numbers 5 to 8 is displayed. Press the [UP] key to switch to

the menu list display of the menu numbers 9 to 11. Use the [→] key to move the cursor of the

LCD indicator to the menu number "9" of "9: LINEARIZ/CNDUCTVTY" and then press the

[SET] key to select the menu of "9: LINEARIZ/CNDUCTVTY".

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(3) Setting the density and the factor (see Subsection 5.2.14)

The setup menus of density and factor are called one after another from the start of the menu

development of "9: LINEARIZ/CNDUCTVTY". First of all, press the [SET] key at "LA:

DENSITY A" and then, after the setup display of density A is displayed, input the value for

density A. Use the [→] key to move to the digit, and use the [UP] or [DN] key to alter the

numeric value of the relevant digit. When entering input is completed, press the [SET] key to

confirm it. The screen will be returned to the immediately preceding one; make sure that the

value is correctly reset. Continue on to switch to the next setup menu display with the [UP]

key. And, in accordance with the same procedure, set density B and factors K1, K2 and K3.

(4) Returning to the measuring mode

Press the [ESC] key twice to return to the initial menu screen and return to the measuring

mode from the setting mode to resume the normal measurement.

(5) Determining and setting the density multiplier

Perform the density measurement after setting the linearizer and, in accordance with the span

calibration in Section 6.5, determine and set the density multiplier C.

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10.7 Density Multiplier Switching by External Signals

10.7.1 Density multiplier switching function by external signals

When switching around multiple measurement objects fulid of differing measurement sensitivities

to measure their respective sensitivities, it is possible to take appropriate density measurements by

resetting the density multiplier to a value in accordance with the relevant measured object fluid

each time the measured object fluid is changed. In the event that the measurement objects fluid are

limited to no more than four types, this function can be used to save the trouble of resetting the

density multiplier each time through manual input. Implement the span calibration in terms of each

measured object fluid in advance, obtain and set the respective density multipliers C1 to C4 and

then switch around the density multipliers to be used for density calculation by means of the

external voltage signals of two points in accordance with the measurement objects fluid being

switched around.

Table 10.7.1 shows the relationship between the statuses of external voltage signals and selected

density correction factors.

Table 10.7.1

Status of External Voltage Signal

DI2 DI3 Selected Density Multiplier

L L C1(Same as the normally used density multiplier C)

H L C2

L H C3

H H C4

H: Voltage signals of 20 to 30VDC

L: Signals of no more than 2VDC

10.7.2 Setting the density multiplier switching by external signals

(1) Switching to the setting mode (see Subsection 5.2.5)

First of all, press the [ESC] key of the converter several times (normally once although this

varies with the operation status) to return to the initial menu display. Next, use the [→] key to

move the LCD indicator cursor to the menu number "2" of "2 SETTING MENU" and then

press the [SET] key to display the warning message saying "Test output will be valid.". Make

sure that there is no problem and then press [→] to get into the setting mode. And return to [2:

SETTING MENU]. Then, the output will be switched to the simulated output that is set

beforehand.

(2) Selecting the "OTHERS" setting menus (see Subsection 5.2.5)

Initially, the menu list of menu numbers 5 to 8 is displayed. However, by pressing the [UP] key,

this display is switched to the menu list of the next menu numbers 9 to 11. Use the [→] key to

move the LCD indicator cursor to the menu number "11" of "11: OTHERS" and then press the

[SET] key to select the menu of "11: OTHERS."

(3) Selecting of density multiplier switching ON/OFF(see Subsection 5.2.16)

Press the [UP] key once to display "DI: C CHANGE ON/OFF". Press the [SET] key here to

switch to the setup display. Each time the [UP] or [DN] key is pressed, the set value

alternates between "ON" and "OFF". Therefore, when using the function of density multiplier

switching by external signals, set the value to "ON" and then press the [SET] key to verify it.

The screen will be returned to the immediately preceding one; make sure that the value is

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correctly reset.

(4) Setting density multipliers C2, C3 and C4

Continuing on from (3), press the [UP] key once to switch to the display of "C2:

DensityMultiplier". Switch to the setup display by pressing the [SET] key here and then input

the density multiplier C2. Use the [→] key to move to the digit, and use the [UP] or [DN] key

to alter the numeric value of the relevant digit. When entering input is completed, press the

[SET] key to confirm it. The screen will be returned to the immediately preceding one; make

sure that the value is correctly reset. Continue on to switch to the next setup menu display with

the [UP] key and set C3 and C4 in accordance with the same procedure. When setting the

density multiplier C1, refer to "6.5 Span Calibration".

(5) Returning to the measuring mode

Press the [ESC] key twice to return to the initial menu screen and return to the measuring

mode from the setting mode to resume the normal measurement.

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11. SPECIFICATIONS

11.1 General Specifications

Measurement method: Microwave phase difference method

Measurement range: Density measurement range can be set by defining the lower point

(density corresponding to 4mA) and the upper point (density

corresponding to 20mA) within the following setting ranges. The object

to be measured should be free from cavities inside and should have

sufficient fluidity. For the ranges other than the ones described below,

please contact Toshiba.

Density measurement range lower side: 0 to 49%TS

Density measurement range upper side: 1 to 50%TS

Span range: 0 to 50%TS

Setting step: 0.1%TS

Note 1: TS (Total Solids) = Soluble materials + Non-soluble materials, Span = Density

measurement range upper side − Density measurement range lower side

Note 2: In the case of 50mm in meter size,

Density measurement range lower side: 0 to 48%TS

Density measurement range upper side: 2 to 50%TS

Span range: 2 to 50%TS

Note 3: The object to be measured is required to be free from cavities and have fluidity. Contact

Toshiba for measurement ranges other than those described above.

Note 4: For the range larger than 50%TS, please contact Toshiba.

Repeatability: In the case of 2%TS or more in full-scale, ±2%FS

In the case of less than 2%TS in full-scale, ±4%TS

Note: The values are taken at measuring points above 5% of full-scale using simulated

reagent.

Note: The full scale value is the maximum value on the upper side of the density measurement

range.

Note: In the case of 50mm in meter size, the full-scale shall be 2%TS or more

Linearity: In the case of 2%TS or more in full-scale, ±2%FS

In the case of less than 2%TS in full-scale, ±4%TS

Note: The values are taken at measuring points above 5% of full-scale using simulated

reagent.

Note: In the case of 50mm in meter size, the full-scale shall be 2%TS or more

Electrical resolution: 0.001%TS

Note: Verifiable resolution using the simulated reagent: 0.05%TS

The verifiable resolution value refers to the value which is verified through a test of the

density difference which can be resolved as a density meter output. Marginal errors in

testing such as uneven density distribution, testing errors, environmental variations and

so on are also included in this value.

Note: In the case of 50mm in meter size, electrical resolution: 0.002%TS

Verifiable resolution using the simulated reagent: 0.1%TS

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Ambient environment condition: Temperature: 0 to 50°C (Option: Detector −20 to 50°C)

Humidity: 5 to 90%RH (No condensation)

Structure: Detector Immersion-proof type (IP67: Immersion-proof type or equivalent)

Converter Waterproof type (IP65: Waterproof type or equivalent)

Note: Outdoor installation is possible. If there is a possibility of direct sunlight, however,

provide a sunshade to the converter to avoid direct sunlight.

Vibration: (1) Applying vibration of a resonant frequency in 5 to 150 Hz range in x, y and z

directions for 30 minutes each totaling 90 minutes, and no deterioration of

performance nor damage shall be found.

However, acceleration is as follows:

• Detector: 25m/s2

• Converter: 4.9m/s2

(2) Applying vibration of 5 to 150 to 5 Hz with the acceleration shown in (1) above for

3 minutes and this is repeated 10 times for each direction of vibration totaling 90

minutes, and no deterioration of performance nor damage shall be found.

Altitude : Up to 2000m

Mass: Refer to the Attached Figure 1, “Dimensions” in “Appendix.”

Microwave transmission power: Approx. 10W

11.2 Detector Specifications

Meter size: 50mm, 80mm, 100mm, 150mm, 200mm, 250mm, 300mm

Flange standard and maximum operating pressure

Flange standard Maximum operating pressure

JIS 10K(JIS B 2238 10K) or equivalent

1MPa

ANSI150 1MPa

DIN10 & BS 10 1MPa

DIN 16 1.6MPa

Fluid temperature: 0 to 100°C (Not freezing)

Fluid conductivity:

Meter size Fluid conductivity

50 mm 20 mS/cm or less

80 mm 16 mS/cm or less

100 mm 15 mS/cm or less

150 mm 10 mS/cm or less

200 mm 8 mS/cm or less

250 mm 8 mS/cm or less

300 mm 6 mS/cm or less

Note: Precautions about measuring fluids

When measuring density in liquids containing conductive particles such as the carbon

particles of activated carbon or metal powder, density measurement may be affected by

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conductive particles. Avoid using the density meter for the fluids like these. For details,

please contact Toshiba.

Material contacting liquid:

Main pipe: Stainless steel SCS14A (equivalent to 316SS)

Temperature detector holder: Stainless steel (SUS 316)

Applicator window : Polysulfone

Applicator window sealing material: Fluororubber (Viton)

Note: Do not apply this density meter to fluids that may corrode, deteriorate or degenerate

the above liquid contacting materials. Fore details, please contact Toshiba.

Applicators: A pair of applicators provided for microwave reception/transmission

Temperature detector: RTD (resistance temperature detector) (Pt100)

Mounting style: Vertical piping installation is recommended (Horizontal piping installation

is also possible. Refer to the Installation section.)

11.3 Conveter Specifications

Output signals:

Density measurement output: 4 to 20mADC (load resistance 750 Ω or less; insulated output)

Density meter fault or maintenance signal:

Semiconductor contact output capacitance 125VAC, 0.1A (resistive load)

The contact opens when in fault and closes otherwise.

* When the density meter converter is in error or in maintenance (setting change) mode,

the contact will be open.

Communication signals:

Digital signals are sent superimposed on the 4 to 20mADC signal line (based on the

HART*1 protocol).

*1 HART: Abbreviated from Highway Addressable Remote Transducer as the name of

an industrial sensor communications protocol recommended by HCF (HART

Communication Foundation).

Note: Various operations can be made from remote places by connecting the cable

terminals of a communication hand-held terminal (option) to the output

terminals of 4-20mADC signal. For the specification regarding the

communication hand-held terminal, refer to the AF100 specification.

Input signals

Externally synchronized input signal: No-voltage "a" contact

Use a contact with the capacitance of at least 24VDC and 1A.

This signal is used to take external synchronized operation with the flow of measured

substances including the pump operation.

Contact close: measurement implemented

Density correction factor switching signal: Voltage signal 2 points

Input voltage H level: 20 to 30VDC

L level: 2VDC or less

Input resistance: Approx. 3kΩ

Using this signal, the density correction factor can be changed into 4 types of values from

remote places and measurements corresponding to 4 different objects to be measured or

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4 kinds of mixed fluids (brands) of different component substances or compounding

ratios can be made.

Conductivity correction signal:

4-20mADC (corresponding to conductivity level of 0 to 10mS/cm)

To perform conductivity correction, prepare a conductivity meter and install it in a place

where conductivity can be measured correctly and steadily and enter the obtained

conductivity correction signal here.

Update cycle of density measurement output and display: Approx. 1 second

Moving average: Density measured values are output as moving averages of 1 to 99

measurements made approximately every 1 second.

This output is used when the averaged output is required for density control

or other purpose.

Rate-of-change limit: Rate-of-change width: 0.00 to 9.99%TS, Count: 0 to 99

This is a function to limit a sudden output change by eliminating signals that

cause sudden output changes in such cases as when a sudden density

change occurs or air bubbles are mixed in the liquid to be measured. You

can set the condition of the rate-of-change limit using the rate-of-change

width and how many times the change occurs (count).

Additives correction function:

Capable of handling up to ten brands, this function performs the sensitivity

correction appropriate to the additives type and compound ratio in

accordance with the parameters that are registered in advance.

Arresters: Mounted as standard on the current output and AC power supply lines.

Operation console (inside the converter):

Used for verifying, changing and manipulating various data.

Five control switches

Display: LCD of 4 lines by 20 characters (dot matrix)

Power supply: 100 to 240 VAC; 50/60 Hz

(Allowable power supply voltage: 85 to 264 VAC)

Power consumption: Approximately 25 VA(100VAC) ,

Approximately 35 VA(240VAC)

Case material: Steel sheet

Finish: Plyurethane finish

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11.4 Model Number Table

Table 11.1 Model number table

Model number

Specification code Description

1 2 3 4 5 6

7 8

L Q 5 0 0

Density meter

0 5

0 8

1 0

1 5

2 0

2 5

3 0

Detector meter size

50 mm

80 mm

100 mm

150 mm

200 mm

250 mm

300 mm

Detector flange standard

JIS10K (JIS B 2238 10K) or equivalent

Equipment for ANSI 150

Equipment for DIN 10

Equipment for DIN 16

Equipment for BS 10

Use

Standard

For PED(for EU)(Note 1)

Liquid contacting specification

SCS14A cast(Equivalent to 316SS)pipe

(standard)

SCS14A cast(Equivalent to 316SS)pipe with

Teflon PFA coating for sticky application

SCS14A cast(Equivalent to 316SS)pipe for

abrasive application

Piping material: HasteloyC (Note 1)

Cable length

(dedicated cable between converter and

detector)

Standard (10m)

20 m

30 m

40 m

50 m

Note 1: The specification of PED(Pressure Equipment Directive)is required from 150 to 300 mm

When the installation location is in the Europe.

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APPENDIX 1

Attached Figure1. Detector outline dimensions

●

The center of gravity

C: Bolt pitch circle

n: Number of bole holes

h: Bolt diameter

[Unit: mm]

Enlarged view of B

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External dimensions (Flange)

Meter size

(mm) Std.

spec.

W D T F C Appropriate bolt

size

(Diameter × length)

n-Φh Mass (kg)

50 225 170

155 16 2 120

M16×60 4-19 Approx. 21

80 225 200

185 18 2 150

M16×65 8-19 Approx. 26

100 240 220

210 18 2 175

M16×65 8-19 Approx. 29

150 260 270

280 22 2 240

M20×75 8-23 Approx. 42

200 290 320

330 22 2 290

M20×75 12-23 Approx. 48

250 315 300

400 24 2 355

M22×80 12-25 Approx. 64

JIS10K

300 340 360

445 24 3 400

M22×85 16-25 Approx. 76

50 225 170

152.4

19.1

1.5 120.7

M16×60 4-19.1

Approx. 21

80 225 200

190.5

23.9

1.5 152.4

M16×70 4-19.1

Approx. 31

100 240 220

228.6

23.9

1.5 190.5

M16×70 8-19.1

Approx. 34

150 260 270

279.4

25.4

1.5 241.3

M20×80 8-22.4

Approx. 44

200 290 320

342.9

28.4

1.5 298.5

M20×80 8-22.4

Approx. 54

250 315 300

406.4

30.2

1.5 362.0

M22×90 12-25.5

Approx. 68

ANSI150

300 340 360

482.6

31.8

1.5 431.8

M22×90 12-25.4

Approx. 99

50 225 170

165 18 3 125

M16×60 4-18 Approx. 22

80 225 200

200 20 3 160

M16×70 8-18 Approx. 30

100 240 220

220 20 3 180

M16×70 8-18 Approx. 31

150 260 270

285 22 3 240

M20×80 8-22 Approx. 43

200 290 320

340 24 3 295

M20×80 8-22 Approx. 54

250 315 300

395 26 3 350

M22×90 12-22 Approx. 65

DIN10

BS10

300 340 360

445 26 4 400

M22×90 12-22 Approx. 78

50 225 170

165 18 3 125

M16×60 4-18 Approx. 22

80 225 200

200 20 3 160

M16×70 8-18 Approx. 30

100 240 220

220 20 3 180

M16×70 8-18 Approx. 31

150 260 270

285 22 3 240

M20×80 8-22 Approx. 43

200 290 320

340 24 3 295

M20×80 12-22 Approx. 52

250 315 300

405 26 3 355

M22×90 12-26 Approx. 68

DIN16

300 340 360

460 28 4 410

M22×90 12-26 Approx. 85

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Attached Figure2. Converter dimensions

●

[Unit: mm]

4-φ12 mounting holes

Converter communication port

Converter power

supply cable port

Contact signal I/O (1) port

Density signal output port

Contact signal

I/O (2) port

Rerserved

Grounding terminal

In the case of wall mounting

In the case of 50A mounting

Marine-use steel

pipe mounting U bolt

Steel pipe (50A)

APPENDIX 3

Microwave Density Meter LQ500 has been confirmed to comply with the requirements of the EMC

directive 89/336/EEC and the low voltage directive 93/68/EEC. And Microwave Density Meter of model

number LQ500******D** has been confirmed to comply with the requirements of the Pressure Equipment

directive 97/23/EC.

EMC directive

This device has been tested in a typical configuration in accordance with the following standards in an

industrial environment.

・Generic emission standard EN50081-2 : 1994

Radiated RF Emission EN55011 Class A

Conducted RF Emission EN55011 Class A

Limits for harmonic current emissions EN61000-3-2

・Generic immunity standard EN50082-2 : 1995

Radiated RF Immunity ENV50140

Conducted RF Immunity ENV50141

Radiated RF Immunity ENV50204

Electrostatic Discharge Immunity EN61000-4-2

Electrical Fast Transient Immunity EN61000-4-4

Low voltage directive

Low voltage standards EN61010-1, /A2

Safety requirements for electrical equipment for measurement control and laboratory use (amended)

Over voltage category Ⅱ

Altitude Up to 2000m

Pressure equipment directive

Conformity assessment procedure : module H

Toshiba 62373831 Density Meter User Manual 6F8A0521 LQ500 030910

Toshiba Corporation Density Meter 6F8A0521 LQ500 030910

User Manual

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