DPM 2014 06 25 Laurel Meter Manual

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LAUREATE SERIES 2
DIGITAL PANEL METER OWNERS MANUAL

Now with Ethernet

LAUREL Electronics Inc.
3183-G Airway Ave, Costa Mesa, CA, 92626, USA
Tel: (714) 434-6131 • Fax: (714) 434-3766 • Website: www.laurels.com
1

1. ORDERING GUIDE
Configure a model number in this format: L20201DCV1, CBL01
L…….Digital panel meter with
screw terminal connectors.
Display Color
1...............DPM with green LED
2.................. DPM with red LED
3..... Extended DPM, green LED
4........ Extended DPM, red LED
Note: Extended adds rate of
change & linearization of nonlinear inputs. Not applicable to
thermocouple or RTD inputs.
Power
0............................. 85-264 Vac
1.......... 10-48 Vdc or 12-32 Vac
Setpoint Output
0....................................... None
1.............Two 8A contact relays
2..............Two solid state relays
3............ Four 8A contact relays
4............. Four solid state relays
Analog Output
0....................................... None
1...... 4-20 mA, 0-10V, -10/+10V
Digital Interface
0....................................... None
1.....................................RS232
2.....................................RS485
4....................... RS485-Modbus
5........................................ USB
6.........USB-to-RS485 converter
7.................................. Ethernet
8.. Ethernet-to-RS485 converter
Input Type
DC Volts
DCV1 ...................... 200.00 mV
DCV2 ......................... 2.0000 V
DCV3 ......................... 20.000 V
DCV4 ......................... 200.00 V
DCV5*.......................... 600.0 V
DCV6 ........................... 300.0 V

DC Amperes
DCA1 .................... 2.0000 mA
DCA2 .................... 20.000 mA
DCA3 .................... 200.00 mA
DCA4 ......................... 5.000 A
RTDs
P385C ... Pt100, -202 to 850°C
P385F .. Pt100, -331 to 1562°F
P392C. .. Pt100, -202 to 850°C
P392F .. Pt100, -331 to 1562°F
N672C..... Ni120, -80 to 260°C
N672F ....Ni120, -112 to 500°F
C427C.... Cu10, -202 to 850°C
C427F ...Cu10, -331 to 1562°F

Strain Gauge, Potentiometer
(4-wire ratio)
SG......... 0-200 mV = 0-100.00
SG1................Custom Scaling
Specify min signal & reading,
max signal & reading. Fullscale ranges 200 mV to 20V.
RMS Volts
RMV1 .................... 200.00 mV
RMV2 ....................... 2.0000 V
RMV3 ....................... 20.000 V
RMV4 ....................... 200.00 V
RMV5*........................ 600.0 V
RMV6 ......................... 300.0 V

Thermocouples

RMS Amperes

JC .....................-210 to 760°C
JF.................... -347 to 1400°F
KC...................-244 to 1372°C
KF ................... -408 to 2501°F
TC .....................-257 to 400°C
TF ..................... -430 to 752°F
EC...................-240 to 1000°C
EF ................... -400 to 1830°F
NC...................-245 to 1300°C
NF ................... -410 to 2370°F
SC.....................-46 to 1768°C
SF ..................... -51 to 3214°F
RC.....................-45 to 1768°C
RF ..................... -49 to 3213°F

RMA1 .................... 2.0000 mA
RMA2 .................... 20.000 mA
RMA3 .................... 200.00 mA
RMA4 ......................... 5.000 A

Resistance / Ohms
R1 ................... 0-20.000 ohms
R2 ................... 0-200.00 ohms
R3 ................. 0-2.0000 kohms
R4 ................. 0-20.000 kohms
R5 ................. 0-200.00 kohms
R6 .... 0-2 Mohms (fixed range)
Process Signals
(4-20 mA, 0-10V, etc.)
P ............. 4-20 mA = 0-100.00
P1…………….Custom Scaling
Specify min signal & reading,
max signal & reading.

* Range not ETL approved.
2

Load Cells (6-wire ratio)
WM1….…..-99,999 to +99,999
Specify min input signal & displayed reading, and max input
signal & displayed reading.
Full-scale inputs 20 mV to 500
mV. 10 Vdc excitation.
Options & Accessories
BL .........Blank lens, no button
pads.
CBL01...RJ11-to-DB9 RS232
cable. Connects meter to PC com port.
CBL02...USB-to-DB9 adapter.
For use with CBL01.
CBL05...USB-cable. Type A
male to Type B male.
IPC ........NEMA-4 panel cover.
BOX1 ....NEMA4 wall mount
enclosure.
BOX2 ....BOX1 plus IPC.

2. TABLE OF CONTENTS

1.
2.
3.

ORDERING GUIDE ..................................................................................................... 2
TABLE OF CONTENTS............................................................................................... 3
PRODUCT INTRODUCTION....................................................................................... 4

4.
5.
6.
7.

RECEIVING & UNPACKING .......................................................................................
SAFETY CONSIDERATIONS......................................................................................
CONNECTOR WIRING INFORMATION .....................................................................
MECHANICAL ASSEMBLY .........................................................................................

8.
9.

FRONT PANEL SETUP KEYS .................................................................................... 10
ENABLING & LOCKING OUT MENU ITEMS .............................................................. 12

10.
11.
12.
13.

READING COORDINATES OF 2 POINTS SCALING METHOD ................................. 13
DC VOLTS, AMPS, PROCESS, STRAIN INPUT......................................................... 14
LOAD CELL & MICROVOLT INPUT............................................................................ 20
AC RMS VOLTS & AMPS INPUT ................................................................................ 25

14.
15.
16.
17.

THERMOCOUPLE INPUT ........................................................................................... 31
RTD & RESISTANCE INPUT....................................................................................... 34
DUAL & QUAD RELAY OUTPUT OPTIONS .............................................................. 39
ANALOG OUTPUT OPTION ....................................................................................... 42

18.
19.
20.
21.

SERIAL COMMUNICATION OPTIONS ....................................................................... 43
EXCITATION OUTPUT & POWER SUPPLY............................................................... 48
INSTRUMENT SETUP VIA PC.................................................................................... 49
CUSTOM CURVE LINEARIZATION............................................................................ 52

22.
23.

METER CALIBRATION ............................................................................................... 54
SPECIFICATIONS ....................................................................................................... 55

24.
25.

GLOSSARY OF TERMS.............................................................................................. 59
WARRANTY ................................................................................................................ 64

5
5
6
8

3. PRODUCT INTRODUCTION
Our digital panel meters are versatile, cost effective solutions to a wide variety of monitoring
and control applications. Depending on the choice of signal conditioner, they are easily set up
for an accurate display of temperature, pressure, flow, weight, voltage or current, all in
appropriate engineering units and with zero and span adjustment when needed. Setup can be
via front panel pushbuttons or the meter’s serial interface. Selective security lockout of the
front panel keys protects against accidental changes to meter setup.
High read rates up to 60 per second (50 for 50 Hz operation) are made possible by
Concurrent Slope Conversion (Pat 5,262,780), which integrates the signal over an AC power
line cycle for maximum noise rejection. High read rates provide accurate peak and valley
capture, and quick response for control applications. An adaptive digital filter supplies a time
constant for the encountered signal noise level, yet responds rapidly to changes that exceed a
selected threshold. Self-calibration occurs automatically after every 17th reading.
The standard power supply is a high-efficiency switching unit that operates from AC or DC,
and allows the meters to be powered from worldwide AC without changes. A low-voltage
supply is optional for power from 10-48V batteries or from 12-30 Vac. Both supplies provide an
isolated 5, 10 or 24Vdc transducer excitation output.
The meter case conforms to the 1/8 DIN size standard. It is made of high impact, 94V-0 ULrated plastic and is watertight to NEMA-4 (IP65) when panel mounted. Mounting is from the
front of the panel and requires less than 110 mm behind the panel. Power and signal wiring is
via removable plugs conforming to UL61010C safety standards. All output options are isolated
from meter and power ground to 250 Vac.
Extended meter versions can linearize nonlinear inputs. Up to 180 data points may be
linearized by a computer program that stores setup parameters in nonvolatile memory.
Extended meters can also display rate of change, for example to display flow rate based on
changing tank level.
Alarm or setpoint control is provided by an optional relay board with two or four Form C 8A
mechanical relays or two or four Form A 120 mA solid state relays. The setpoints may be
latching or non-latching, be energized above or below the setpoint, or operate in a fail-safe
mode. The relays can operate from the filtered signal to reduce relay chatter or from the
unfiltered signal for fastest response. Snubber circuits and a programmable relay switching
time delay extend relay contact life.
An isolated analog output of 4-20 mA, 0-20 mA, 0-10V or -10 to +10V can be provided by an
optional analog output board. The output is linearized to the display and can operate from the
filtered or unfiltered signal input. It can be scaled via front panel pushbuttons or the meter’s
serial interface.
Ethernet USB, RS232, or RS485 (2-wire half-duplex or 4-wire full-duplex) serial communications options are available with the Modbus protocol or a simpler custom ASCII protocol.
Modbus operation includes RTU or ASCII modes, up to 247 digital addresses, and up to 32
devices per RS485 line without a repeater. Ethernet-to-RS485 and USB-to-RS485 converter
boards allow a meter to be interfaced to a PC and to multiple meters on an RS485 network.
Meter programming can be via the meter’s front panel or a PC running Windows based
Instrument Setup Software (serial interface option required).
4

4. RECEIVING & UNPACKING
Your meter was carefully tested and inspected prior to shipment. Should the meter be
damaged in shipment, notify the freight carrier immediately. In the event the meter is not
configured as ordered or the unit is inoperable, return it to the place of purchase for repair or
replacement. Please include a detailed description of the problem.

5. SAFETY CONSIDERATIONS
Warning: Use of this equipment in a manner other than specified may impair the protection of the device and subject the user to a hazard. Visually inspect the unit for signs of
damage. If the unit is damaged, do not attempt to operate.
Caution:
•

The unit must be connected to a Disconnect switch or a branch-circuit breaker, which must
be in a suitable location

•

This unit must be powered by 85-264 Vac with the high voltage power supply option, or
10-48 Vdc (12-32 Vac) with the low voltage power supply option. Verify that the proper
power option is installed for the power to be used. This meter has no On/Off switch. It will
be in operation as soon as power is connected.

•

The 85-264 Vac power connector (P1 Pins 1-3) is colored Green to differentiate it from
other input and output connectors. The 12-32 Vac (10-48 Vdc) power connector is colored
Black.

•

Do not make signal wiring changes or connections when power is applied to the instrument.
Make signal connections before power is applied. If reconnection is required, disconnect
power before such wiring is attempted.

•

To prevent electrical or fire hazard, do not expose the instrument to excessive moisture.

•

Do not operate the instrument in the presence of flammable gases or fumes; such an
environment constitutes a definite safety hazard. This meter is designed to be mounted in a
metal panel or a bench or wall mount style case. The spacing around the meter and the
ventilation must be sufficient to maintain the ambient temperature at less than 55°C.

•

Verify the panel cutout dimensions, and mount according to instructions.

Symbols used
Caution (refer to accompanying documents)

Earth (ground) terminal.

Caution, risk of electric shock.

Both direct and alternating current.

Equipment protected throughout by double
insulation or reinforced insulation.
Operating environment:
The meter is Class II (double insulated) equipment designed for use in Pollution degree 2.
5

6. CONNECTOR WIRING INFORMATION
CONNECTORS
Connectors for signal and power are UL-rated
screw-clamp terminal blocks that plug into
mating jacks on the printed circuit board.
Communication connectors are a single RJ11
plug for RS232, dual RJ11 plugs for RS485,
dual RJ45 plugs for RS485 Modbus, or USB.

Note: Control inputs 1 & 2 of P1 are menu
selectable.

Warning: Hazardous voltages may be present
on pins 4, 5 & 6 of P1 since digital ground is tied
to pin 3 of P5 (-Signal Input). Keep pin 3 close to
earth ground to minimize common mode voltage
or shock hazard at pins 4, 5 & 6 of P1.

P3 - SERIAL COMMUNICATIONS
RS232 INTERFACE
N/C
ISO GND
RX
TX
RTS
N/C

6
5
4
3
2
1

P4 - ANALOG OUTPUT

Computer
GND
TX
RX
RTS

RS485 INTERFACE - FULL DUPLEX
ISO GND
BRX
ARX
ATX
BTX
ISO GND

GND
BTX
ATX
ARX
BRX
GND

6
5
4
3
2
1

RS485 INTERFACE - HALF DUPLEX
ISO GND
ATX / ARX
BTX / BRX
ISO GND

RS485-MODBUS - FULL DUPLEX
(A') RXD0 (B') RXD1 +
(B) TXD1 *
(A) TXD0 ISO GND

1
2
3
4
5
6
7
8

GND

6
5
4
3
2
1

ATX / ARX
BTX / BRX
GND

RS485-MODBUS - HALF DUPLEX

TXD0
TXD1
RXD1
RXD0

(B) TX / RXD1
(A) TX / RXD0

GND

ISO GND

1
2
3
4
5
6
7
8

(B) TX/RXD1
(A) TX/RXD0
GND

7. MECHANICAL ASSEMBLY
REMOVING THE REAR PANEL
First remove any connectors. Use one hand to press in the two sides of the rear of the
case, and the other hand to press down the two protruding tab releases at the top of the
rear panel (see figure below). This will unhook the rear panel from the case.
Retaining tab
with tab release

Retaining tab
with tab release

Retaining tab

Rear Panel
REMOVING THE ELECTRONICS
With the rear panel removed, grasp the power supply board to the left and signal conditioner board to the right, and carefully slide the electronic assembly out through the rear of
the case. (see figure below).

INSTALLING NEW 0PTION BOARDS
Options boards plug into the main board at the front of the meter. These are plug-and-play
and may be installed in the field. They will be recognized by the software, which will
provide access to the menu items associated with that board. If necessary, remove rear
panel knockouts for new boards. Boards plug into connectors as follows:
Option Board

Main Board Plug

Rear Panel Jack

P11
P12
P13
P14
P15

J1
J2
J3
J4
J5

Power supply
Relay board
Serial interface board
Analog output board
Signal conditioner board
8

Note: Corresponding main board and option board connectors have the same number of
electrical lines. When an option board is correctly installed, the top and bottom edges of the
main board and option board are aligned.
REASSEMBLING YOUR METER
Slide the electronics assembly into the case until the display board is seated flush against
the front overlay. Insert the bottom tabs of the rear panel into the case, and then carefully
align the board connectors with the openings in the rear panel. If necessary, remove any
rear panel knockouts for new option boards that may have been installed. Ensure that all
option boards are properly aligned with the molded board retaining pins on the inside of the
rear panel. Once the rear panel is in place, reinstall the input/output screw clamp terminal
plugs.
PANEL MOUNTING
Ensure that the panel mounted gasket is in place against the back of the bezel. Turn the two
mounting screws counterclockwise until the space between the mounting pawl and the rear
of the gasket is greater than the panel thickness. Insert the meter in the panel cutout. Turn
the mounting screws clockwise until the meter is securely mounted in the panel. Do not
overtighten.

Dimensioned case drawings
9

8. FRONT PANEL SETUP KEYS

Meter Front Panel
There are four front panel keys, which change function for the Run Mode and Menu Mode,
effectively becoming eight keys. The keys are labeled with alphanumeric captions (MENU,
PEAK, RESET, ALARMS) for the Run Mode and with symbols (
right arrow,
right triangle, up triangle,
left arrow) for the Menu Mode.
FRONT PANEL LOCKOUT
The Menu Mode will not work with most meters as received from the factory, since all menu
items have been disabled in software and a lockout jumper is in place. That jumper needs to
be removed for the Menu Mode to work, and menu items under Loc 1, Loc 2 and Loc 3 then
need to be set to "0" via the front panel for these menu items to be unlocked See Section 9.
The paragraphs below assume that all menu items have been unlocked.
MENU MODE KEY ACTION
In the Menu Mode, pressing a key momentarily advances to the next menu item. Holding
down a key automatically advances through multiple menu items for fast menu navigation.
KEYS IN RUN MODE
MENU Key. Pressing MENU from the Run Mode enters the Menu Mode. Pressing
MENU repeatedly will step the meter through the various menu items (if these have not
been locked out) and then back to the Run Mode.
PEAK Key. Pressing PEAK normally causes the peak value of the input signal to be
displayed. The peak display then blinks to differentiate it from the normal present value
display. Pressing PEAK again returns the display to the present value. The PEAK key
can also be programmed to display Valley, alternating Peak or Valley, or to Tare the
reading to zero. When Peak or Valley is selected, periodic horizontals bars at the top of
the display indicate Peak, and periodic horizontals bars at the bottom indicate Valley.
RESET Key. Pressing RESET with PEAK resets peak and valley values. Pressing
RESET with ALARMS resets latched alarms. Pressing RESET with MENU performs a
meter reset (same as power on). Meter reset can also be applied via a rear panel
connect or a serial ASCII command.
ALARMS Key. Pressing ALARMS once displays the setpoint for Alarm 1. Pressing it
again displays the setpoint for Alarm 2. Pressing it again returns to the present value.
10

KEYS IN MENU MODE
Right Arrow Key (MENU). Pressing
steps the meter through all menu items that
have been enabled and then back to the Run Mode. With the DC signal conditioner
board and no option boards, available menu items are _InPut, SEtuP, ConFG, _FiLtr,
dEc.Pt, SCALE, OFFst, Loc 1, Loc 2, Loc 3. If a change has been made to a menu
item, that change is saved to non-volatile memory when the
key is pressed next,
and StoreE is displayed briefly.
Right Triangle Key (Digit Select).
• Pressing
from the InPut menu brings up all meter functions available with the
meter's signal conditioner. For the DC signal conditioner, these are _dC U, _dC A
and _rAtio.
from the SEtuP, ConfFG, FiLtr, SCALE, OFFSt, Loc 1, Loc 2 or Loc 3
• Pressing
menus items sequentially selects digit positions 1 - 5, as indicated by a flashing digit:
00000, 00000, 00000, 00000, 00000.
• Pressing from the dEC.Pt menu item sequentially selects decimal point positions,
which will flash: d.dddd dd.ddd ddd.dd dddd.d ddddd. .ddddd.
for a flashing item (digit position or
Up Triangle Key (Value Select). Pressing
decimal point position) will increment that item. Pressing MENU will save any changes.
Left Arrow Key (Reverse Menu). Pressing
has the same effect as the MENU key,
except that menu items are brought up in reverse order.

9. ENABLING & LOCKING OUT MENU ITEMS
For security reasons and ease of meter operation, any and all
menu items may be disabled or "locked out" so that they are no
longer directly accessible from the front panel. Each function to
be disabled is set to "1" in menu items Loc 1, Loc 2 or Loc 3, and
each function to be enabled is set to "0." The top menu items
Loc 1, Loc 2 and Loc 3 can in turn be locked out by installing an
internal hardware jumper. With the jumper installed, the operator
only has access only to enabled menu items. With the jumper
removed, the operator also has access to menu items Loc 1, Loc
2 and Loc 3.
SETTING HARDWARE LOCKOUT JUMPER
To access the lockout jumper, remove the rear panel per Section
9 and locate jumper “a” in the lower portion of the power supply
board next to the input connectors (see figure at right).

SETTING SOFTWARE LOCKOUTS
When setting up the meter, it may be necessary to
enable specific menu items by setting the corresponding lockout digit to 0. Be sure to reset the lockout
digit to "1" if you do not want the menu item to be
changed by an operator.
Loc 1 Loc 2 Loc 3
Press the
MENU key until Loc 1, Loc 2 or Loc 3
is displayed, as desired. Note: the hardware lockout
jumper must be removed (see above).
11111
Press
to display the lockout status, consisting of
1’s and 0’s. The left digit will flash. Press again to
step to the next digit, which will flash.
00000
12345
Press
to set the flashing digit to "0" to enable the
menu item or to "1" to disable. Press MENU to enter.
See the table to the right for list of menu items that
can be enabled or disabled.

Enabled or Disabled
Menu Items
Loc 1
1 - Input type selection.
2 - Meter setup, configuration
& decimal pt.
3 - Filter selection.
4 - Scale or Lo, Hi input.
5 - Offset or Lo, Hi reading
Loc 2
2 - Alarm setup.
3 - Alarm setpoint value
programming.
4 - Analog output scaling.
5 - Serial interface setup.
Loc 3
2 - View peak value
3 - View alarm setpoints
4 - Reset (peak & latched alarms)
5 - Reset (meter reset)

10. READING COORDINATES OF 2 POINTS SCALING METHOD
When the reading coordinates of 2 points scaling method has been selected under SEtuP,
the four menu items below will appear ahead of all other menu items when the MENU or
key is first pressed from the run mode.
This scaling method applies a straight line fit between two points, which are determined
from actual transducer signals and the desired corresponding meter readings. A low signal,
such as the output of a pressure transducer at zero pressure, and high signal, such as the
output of the same transducer at a known high pressure, are applied to the meter. The
desired corresponding low and high readings are then entered from the front panel. The
meter then applies straight line fit between the high and low calibration points. This scaling
method has the advantage of calibrating the transducer and meter as a system. The actual
voltage or current at either point does not need to be known. This method is ideal for
process and load cell meters, which require zero and span adjustment. It is also available
for DC or AC meters. It is not available with thermocouple or RTD meters.
The programming example below is for a process meter used with a 4-20 mA pressure
transducer for 0 to 100 psi. Decimal points are set separately using the dEC.Pt menu.
Press Menu Select
Key
Lo In Apply low signal input
(e.g., transducer output for 0
psi).
Hi In Apply high signal input
(e.g., transducer output for
known 100.00 psi source).

Press Digit Select
Key
_40.21 Press to display
reading at low signal input
(e.g., 4.021 mA).
200.94 Press to display
reading at high signal input
(e.g., 20.094 mA).

Press Value Select
Key
_40.21 Press
reading.

to store low

200.94 Press
reading.

to store high

Lo rd
Mode to enter desired low
reading (e.g., 0.00).

000.00 000.00 000.00
100.00 Select -9 thru 9 for
000.00 000.00 Select digit flashing first digit, 0 thru 9 for
other flashing digits.
to flash.

Hi rd
Mode to enter desired high
reading (e.g., 100.00).

000.00 000.00 000.00
100.00 Select -9 thru 9 for
000.00 000.00 Select digit flashing first digit, 0 thru 9 for
other flashing digits.
to flash.

11. DC VOLTS, AMPS, PROCESS, STRAIN INPUT
The DC Volts, Amps, Process and Strain meters utilize the DC signal conditioner board, which
needs to be configured via jumpers for the desired voltage or current range. All signal ranges
are factory calibrated with calibration factors stored in EEPROM. The meter software
recognizes the board and will bring up the appropriate menu items for it; however, it does not
recognize the jumper settings. Please see further manual sections for setup of the following:
relay output (16), analog output (17), communications (18), and excitation output (19).
Board Revision N
Voltage Ranges

Jumpers

FS Input

±200.00 mV
±2.0000 V
±20.000 V
±200.00 V
±300V (UL)
±600V (not UL)

A
A
B
B
B
B

f
f
h
h
g
g

b
a
b
a
a
a

Current Ranges

Jumpers

FS Input

±2.0000 mA
±20.000 mA
±200.00 mA
±5.000 A

A
A
A
A

e, g
d, g
c, g
a, b, g

b
b
b
b

Board Revision P (shipped between 15 Jan 2012 and 1 May 2012)
Voltage Ranges

Jumpers

FS Input

±200.00 mV
±2.0000 V
±20.000 V
±200.00 V
±300V (UL)
±600V (not UL)

A
B
B
B
B
B

f
k
j
h
g
g

Current Ranges

Jumpers

FS Input

±2.0000 mA
±20.000 mA
±200.00 mA
±5.000 A

A
A
A
A

e, g
d, g
c, g
a, b, g

Board Revisions Q and R
Voltage Ranges

Jumpers

FS Input

±200.00 mV
±2.0000 V
±20.000 V
±200.00 V
±300V (UL)
±600V (not UL)

A
A
B
B
B
B

f
f
h
h
g
g

b
a
b
a
a
a

Current Ranges

E1
A
h
b

Jumpers

FS Input

±2.0000 mA
±20.000 mA
±200.00 mA
±5.000 A

A
A
A
A

e, g
d, g
c, g
a, b, g

b
b
b
b

1.
2.
3.
4.

E2 g

a
f

Letters indicate jumper position. Jumpers are installed on pins adjacent to letters.
Use 5 mm (0.2") jumpers for locations designated by a capital letter.
Use 2.5 mm (0.1") jumpers for locations designated by a lower case letter.
Store spare jumpers on an unused jumper post not associated a capital letter.

SCALE & OFFSET SETUP
For DC voltmeters & ammeters, a scale factor of 1 and an offset of 0 are used for direct
readings in (milli)volts or (milli)amperes. Decimal point selection does not affect the displayed
digits. For example, 0-20V or 0-20 mA signals can both be displayed as 0-20000. A full scale
of 20000 may be displayed as 20.000 mA or 20000 µA. Use with a current shunt will require a
scale factor to be set. For example, for a 500-100 (500A, 100 mV) shunt, divide 5000 (the
desired full scale display with 0.1A resolution) by 10000 (displayed value with 100 mV when
the scale factor is 1.0) for a scale factor of 0.5.
For process & strain meters, scaling is normally set up from the front panel using the and
keys, but can also be set up via RS232/485 using special PC-compatible setup software
(available at no charge). The meter allows three scaling methods to be selected: 1) Scale and
offset, 2) Coordinates of 2 points, and 3) Reading coordinates of 2 points. Only menu items
applicable to the selected method will be presented.

KEYSTROKES FOR SETUP
key does not work, see Section 9 “Enabling & Locking Out Menu Items.”
If the MENU
Press Menu
Select Key
_InPut
Selection of signal
input type & range

SEtuP
Meter Setup

Press Digit
Select Key

Press Value Select
Key

_dC U
DC Volts

__0.2U __2.0U _20.0U 200.0U 600.0U
0.2, 2, 20, 200, 660V FS

_dC A
DC Amps

__2.0a _20.0a _200.0a _5.0a
0.2, 20, 200 mA, 5A FS

_rAtio
Strain gauge & ratio

__0.2U __2.0U _20.0U
0.2, 2, 20V FS.

00_00
Display selection with
scale factor of 1.

0
1
2
3

00 _00
Power line frequency

0 Noise minimized for 60 Hz
1 Noise minimized for 50 Hz

00_ 00
Scaling method

0 Scale and offset method
1 Coordinates of 2 points method
2 Reading coordinates of 2 points method

00_00
Control inputs 1 & 2:
True = logic 1 (0V or
tied to digital ground)
False = logic 0 (5V or
open)

1 = Reset, 2 = Meter Hold
1 = Function Reset, 2 = Peak or Valley
1 = Hold, 2 = Peak or Valley Display
1 = Hold, 2 = Tare
1 = Peak or Valley Display, 2 = Tare
1 = Tare, 2 = Reset
1 = 1, 2 = 1, decimal point = XXXXX
1 = 0, 2 = 1, decimal point = XXXX.X
1 = 1, 2 = 0, decimal point = XXX.XX
1 = 0, 2 = 0, decimal point = XX.XXX
7 1 = 1, 2 = 1, decimal point = XXXX.X
1 = 0, 2 = 1, decimal point = XXX.XX
1 = 1, 2 = 0, decimal point = XX.XXX
1 = 0, 2 = 0, decimal point = X.XXXX
8 1 = Function Reset, 2 = Display Blank
9 1 = Hold, 2 = Display Blank
A 1 = Peak or Valley, 2 = Display Blank
B 1 = Tare, 2 = Display Blank
C 1 = Valley Display, 2 = Peak Display
D 1 = Tare, 2 = Reset Tare to Zero
Both inputs 1 and 2 set to logic 1 for selections 2, 4, A, C = Function Reset
Both inputs 1 and 2 set to logic 1 for selections 0, 1, 3, 5, 8, 9, B, D = Meter Reset
0
1
2
3
4
5
6

4-1/2 digits (±20,000)
Remote display (±99,999)
4-1/2 digits, counts by 10 (±20,000)
3-1/2 digits (±2,000)

Press Menu
Select Key

Press Digit
Select Key

ConFG
000_0
Meter Configuration Operation as a rate of
change meter.
Extended meter only.

FiLtr
Filtering

dEc.Pt
Dec. point selection

Press Value Select
Key
0
1
3
5

Not rate of change
Rate x 0.1
2 Rate x 1
Rate x 10
4 Rate x 100
Rate x 1000
6 Rate x 10000

000_0
Operation of front
panel PEAK button
and rear connector for
Peak or Valley Display

0 Peak Display. Also selects “Peak” in
“Peak or Valley” at connector above.
1 Valley Display. Also selects “Valley” in
“Peak or Valley” at connector above.
2 Peak (1st push), Valley (2nd push)
3 Front panel Tare

000_0
Auto-tare

0 Meter comes up in normal run mode.
1 Meter comes up in auto-tare mode

000_ 0
Nonlinear input scaling
Extended meter only.

0 Linear input
1 Custom curve linearization

00000
Alarm filtering

0 Unfiltered output
1 Filtered output

00000
Peak & Valley filtering

0 Unfiltered Peak & Valley
1 Filtered Peak & Valley

00000
Display filtering

0 Display batch average every 16 readings
1 Display filtered signal

00000 Adaptive filter
threshold

0 Low adaptive filter threshold level
1 High adaptive filter threshold level

00000
Input signal filtering.
Can be applied to display, setpoint, analog
output, data output.

0
1
2
3
4
5
6
7
8
9
A

d.dddd
Decimal point flashes.

d.dddd dd.ddd ddd.dd dddd.d ddddd.
.ddddd Press
to shift the decimal point.

Autofilter
Batch average, 16 readings
Moving average, 0.08 sec.
Moving average, 0.15 sec.
Moving average, 0.3 sec.
Moving average, 0.6 sec.
Moving average, 1.2 sec.
Moving average, 2.4 sec.
Moving average, 4.8 sec.
Moving average, 9.6 sec.
Unfiltered

Press Menu
Select Key

Press Digit
Select Key

Press Value Select
Key

Scaling method “Scale and Offset” if selected under SEtuP
SCALE
Scale factor

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
0.0000 0.0000 0.0000 for other flashing digits. Select decimal point
location when decimal point is flashing.
Select digit to flash.

OFFst
Offset value

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point
0.0000 0.0000
location is selected by dEC.Pt.
Select digit to flash.

Scaling method “Coordinates of 2 points” if selected under SEtuP
Lo In.
Low signal input.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by input range chosen.
Select digit to flash.

Lo rd
Desired reading at
Lo In.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by
dEC.Pt.
Select digit to flash.

Hi In.
High signal input.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by input range chosen.
Select digit to flash.

Hi rd.
Desired reading at
Hi In.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by dEC.Pt.
Select digit to flash.

Scaling method “Reading coordinates of 2 points” if selected under SEtuP
Lo In.
Low signal input.

_0.021
Apply a low reference
signal to the meter.

_0.021
Press to store the low signal input in the
meter.

Hi In.
High signal input.

_20.094
Apply a high reference
signal to the meter.

_0.021
Press to store the high signal input in the
meter.

Lo rd
Desired reading at
Lo In.

0.0000 0.0000 0.0000 0.0000
Select -9 thru 9 for flashing first digit, 0 thru 9
0.0000 0.0000
for other flashing digits. Decimal point is set
Select digit to flash.
by dEC.Pt.

Hi rd.
Desired reading at
Hi In.

0.0000 0.0000 0.0000 6.7500
Select -9 thru 9 for flashing first digit, 0 thru 9
0.0000 0.0000
for other flashing digits. Decimal point is set
Select digit to flash.
by dEC.Pt.

Option board dependent menu items
ALSEt. ALS34 dEU1H dEU2H dEU1b dEU2b dEU3H DEU4H DEU3b DEU4b
Menu items related to alarm setup These will only appear if a relay board is detected. If so,
please see Section16.
AnSEt. An Lo. An Hi..
Menu items related to analog output setup. These will only appear if an analog output
board is detected. If so, see Section 17.
SEr 1. SEr 2. SEr 3. SEr 4. _Addr
Menu items related to serial communications. These will only appear if an RS232, RS485
or USB I/O board is detected. If so, see Section 18.
Menu lockout items
Loc 1. Loc 2. Loc 3.
Menu items used to enable or lock out (hide) other menu items. Loc menu items may in turn
be locked out by a hardware jumper. Please see Section 9.

Scaling method 2, “Reading Coordinates of 2 Points Scaling Method,” will appear before all
other Menu items, including _InPut. Decimal point is set by dEC.Pt.

12. LOAD CELL & MICROVOLT INPUT
The Load Cell and Microvolt meters utilize the load cell signal conditioner board, which offers
sensitivity to ±20 mV full scale and 4 or 6-wire load cell connection. This board needs to be
configured via jumpers for the desired voltage range. All signal ranges are factory calibrated
with calibration factors stored in EEPROM. The meter software recognizes the board and will
bring up the appropriate menu items for it; however, it does not recognize the jumper settings.
Please see further manual sections for setup of the following features: relay output (16),
analog output (17), communications (18), and transducer excitation output (19).
RANGE SELECTION VIA JUMPERS
Ranges & Display with
Scale Factor = 1
Input
±20 mV
±50 mV
±100 mV
±250 mV
±500 mV
Notes

Jumpers

Full scale
display

e
a
b
c
d

±20000
±50000
±10000
±25000
±50000

1. See Section 19 to select 10V excitation.
2. Jumpers are 2.5 mm (0.1 in).

SCALE & OFFSET SETUP
For DC microvolt meters, a scale factor of 1 and an offset of 0 are used for direct readings in
microvolts or millivolts. Decimal point selection does not affect the displayed digits. For
example, 20 mV can be displayed as 20.000 mV or 20000 µV. The decimal point is set
separately.
For load cell applications, scaling is normally set up from the front panel using the and
keys, but can also be set up via RS232/485 using special PC-compatible setup software
(available at no charge). The meter allows three scaling methods to be selected: 1). Manual
scale and offset, 2) Coordinates of 2 points, and 3) Reading coordinates of 2 points. Please
see the Glossary for an explanation of each method.

KEYSTROKES FOR SETUP
key does not work, see Section 9 “Enabling & Locking Out Menu Items.”
If the MENU

Press Menu
Select Key

Press Digit
Select Key

Press Value Select
Key

_InPut
Selection of signal
input type & range

_Strn
Strain or ratiometric

_20.0____50.0_ _100.0 _250.0 _500.0
20, 50, 100, 250, 500 mV FS voltage

_dC u U
DC millivolts

_20.0____50.0_ _100.0 _250.0 _500.0
20, 50, 100, 250, 500 mV FS voltage

SEtuP
Meter Setup

00_00
Display type

0
1
2
3

00 _00
Power line frequency

0 Noise minimized for 60 Hz
1 Noise minimized for 50 Hz

00_ 00
Scaling method

0 Scale and offset method
1 Coordinates of 2 points method
2 Reading coordinates of 2 points method

00_00
Rear connector control
inputs 1 & 2.
True = logic 1 (0V or
tied to digital ground)
False = logic 0 (5V or
open)

1 = Reset, 2 = Meter Hold
1 = Function Reset 2 = Pk or Valley Disp.
1 = Meter Hold
2 = Pk or Valley Disp.
1 = Meter Hold
2 = Tare
1 = Peak or Valley 2 = Tare
1 = Tare
2 = Reset
1 = 0, 2 = 0, decimal point 1= XXXXX
1 = 1, 2 = 0, decimal point 1 = XXXX.X
1 = 0, 2 = 1, decimal point 1 = XXX.XX
1 = 1, 2 = 1, decimal point 1 = XX.XXX
7 1 = 0, 2 = 0, decimal point 2 = XXXX.X
1 = 1, 2 = 0, decimal point 2 = XXX.XX
1 = 0, 2 = 1, decimal point 2 = XX.XXX
1 = 1, 2 = 1, decimal point 2 = X.XXXX
8 1 = Function Reset 2 = Display Blank
9 1 = Hold
2 = Display Blank
A 1 = Peak or Valley 2 = Display Blank
B 1 = Tare
2 = Display Blank
C 1 = Valley Display 2 = Peak Display
D 1 = Tare
2 = Tare Reset
Both control inputs 1 & 2 set to 1 for selections 2, 4, A, C = Function Reset.
Both control inputs 1 & 2 set to 1 for selections 0, 1, 3, 5, 8, 9, B, D = Meter Reset.
0
1
2
3
4
5
6

4-1/2 digit meter, counts by 1
5-digit remote display (±99,999)
4-1/2 digit meter, counts by 10
3-1/2 digit meter

Press Menu
Select Key

Press Digit
Select Key

ConFG
000_0
Meter Configuration Operation as a rate of
change meter.
Extended meter only.

FiLtr
Filtering

dEc.Pt
Dec. point selection

Press Value Select
Key
0
1
2
3
4
5
6

Not rate of change
Rate x 0.1
Rate x 1
Rate x 10
Rate x 100
Rate x 1000
Rate x 10000

000_0
Operation of front
panel PEAK button
and rear connector for
Peak or Valley Display

000_0
Auto-tare

0 Meter comes up in normal run mode.
1 Meter comes up in auto-tare mode

000_ 0
Nonlinear input scaling
Extended meter only.

0 Linear input
1 Custom curve linearization

00000
Alarm filtering

0 Unfiltered output
1 Filtered output

00000
Peak & Valley filtering

0 Unfiltered Peak & Valley
1 Filtered Peak & Valley

00000
Display filtering

0 Display batch average every 16 readings
1 Display filtered signal

00000 Adaptive filter
threshold

0 Low adaptive filter threshold level*
1 High adaptive filter threshold level

00000
Input signal filtering.
Can be applied to display, setpoint, analog
output, data output.

0
1
2
3
4
5
6
7
8
9
A

d.dddd
Decimal point flashes.

d.dddd dd.ddd ddd.dd dddd.d ddddd.
.ddddd

Press Menu
Select Key

Press Digit
Select Key

Press Value Select
Key

Scaling method “Scale and Offset” if selected under SEtuP
SCALE
Scale factor

OFFst
Offset value

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point
0.0000 0.0000
location is selected by dEC.Pt.
Select digit to flash.

Scaling method “Coordinates of 2 points” if selected under SEtuP
Lo In.
Low signal input.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by input range chosen.
Select digit to flash.

Lo rd
Desired reading at
Lo In.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by
dEC.Pt.
Select digit to flash.

Hi In.
High signal input.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by input range chosen.
Select digit to flash.

Hi rd.
Desired reading at
Hi In.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by dEC.Pt.
Select digit to flash.

Scaling method “Reading coordinates of 2 points” if selected under SEtuP
Lo In.
Low signal input.

_0.021
Apply a low reference
signal to the meter.

_0.021
Press to store the low signal input in the
meter.

Hi In.
High signal input.

_20.094
Apply a high reference
signal to the meter.

_20.094
Press to store the high signal input in the
meter.

Lo rd
Desired reading at
Lo In.

0.0000 0.0000 0.0000 0.0000
Select -9 thru 9 for flashing first digit, 0 thru 9
0.0000 0.0000
for other flashing digits. Decimal point is set
Select digit to flash.
by dEC.Pt.

Hi rd.
Desired reading at
Hi In.

0.0000 0.0000 0.0000 6.7500
Select -9 thru 9 for flashing first digit, 0 thru 9
0.0000 0.0000
for other flashing digits. Decimal point is set
Select digit to flash.
by dEC.Pt.

13. AC TRUE RMS VOLTS & AMPS INPUT
AC voltage or current measurement utilizes the True
RMS signal conditioner board which uses precision
circuitry to compute the root-mean-square of complex
waveforms from 10 Hz to 10 kHz. Accurate measurements are obtained with spikes up to 3 times the
maximum of each range. The input can be AC
coupled to read only the AC component, such as
ripple on a power supply, or DC coupled to read AC
plus DC. The board needs to be configured via
jumpers for the desired voltage or current range, and
for AC or DC coupling. All signal ranges are factory
calibrated with calibration factors stored in EEPROM.
The meter software recognizes the board and will bring up the appropriate menu items for it;
however, it does not recognize the jumper settings. These need to be set manually. Please
see further manual sections for setup of the following features: relay output (16), analog output
(17), and communications (18).
Voltage Ranges
Full Scale Input

Counts

Jumpers

200 mV
2V
20V
200V
300V (UL)
600V (not UL)

20000
20000
20000
20000
3000
6000

j
c, g, h
c, i
c, k
c, m
c, m

Full Scale Input

Counts

Jumpers

2 mA
20 mA
200 mA
5A

20000
20000
20000
5000

l, k
b, m
a, m
c, d, e, m

Current Ranges

AC or DC Coupling
Coupling Type
DC coupling for AC + DC
AC coupling for AC only

RANGE SELECTION VIA JUMPERS
Jumpers
f
none

1. Letters indicate jumper position. Jumpers
are installed on pins adjacent to letters.
2. Use 2.5 mm (0.1") jumpers.
3. Store spare jumpers on unused jumper post.

METER SCALING
Refer to the above tables for the full scale counts (or displayed digits) produced by the
available full scale input ranges with a scale factor of 1 and an offset of 0. The decimal point
25

can be set for direct readout in (milli)volts or (milli)amperes. Decimal point selection does not
affect the counts. For example, a 20V input may be displayed as 20.000V or 20000 mV.
The 5A range, designed for use with a 5A current transformer (CT), is scaled to produce 5000
counts with a scale factor of 1 and an offset of 0. Use with a specific CT will require the scale
factor to be set. For example, for an 800A input, 5A output CT, set a scale factor of 1.6. This is
the desired 8000 count display at 5A divided by the default 5000 count display at 5A. Then set
the decimal point to display to 800.0 at 5A.
All scaling methods applicable to DC, process, strain and load cell meters are available with
AC RMS meters.
INTERNAL SHIELD
To reduce noise pickup inside the meter or transmitter, the
RMS board is fitted with a flexible plug-on shield. If necessary,
This shield may be removed for jumper setting, but must be
reinstalled before closing the instrument.
SIGNAL SHIELDING
Sig High
Sig Low

Signal Source

RMS
Board

Shield around twisted pair
Earth Ground

Shielding for noise reduction
AC RMS measurements are susceptible to signal noise. This is especially true when the instrument has a wide bandwidth. To minimize noise pickup, the input signal wiring should utilize a
shielded twisted pair, and the shield should be connected to signal low at the meter, as
illustrated. If signal low is close to earth ground, such as within 2V, signal low can further be
connected to earth ground at the meter, as illustrated.

KEYSTROKES FOR SETUP
key does not work, see Section 9 “Enabling & Locking Out Menu Items.”
If the MENU

Press Menu
Select Key

Press Digit
Select Key

Press Value Select
Key

_InPut
Selection of signal
input type & range

_AC U
AC Volts

__0.2U __2.0U _20.0U 200.0U 600.0U
0.2, 2, 20, 200, 660V FS

_AC A U
AC Amps

__2.0a _20.0a _200.0a _5.0A
2, 20, 200 mA, 5A FS

SEtuP
Meter Setup

00_00
Display selection with
scale factor of 1

0
1
2
3

00 _00
Power line frequency

0 Noise minimized for 60 Hz
1 Noise minimized for 50 Hz

00_ 00
Scaling method

0 Scale and offset method
1 Coordinates of 2 points method
2 Reading coordinates of 2 points method

00_00
Rear connector inputs
1&2
True = logic 1 (0V or
tied to digital ground)
False = logic 0 (5V or
open)

4-1/2 digits (±20,000)
Remote display (±99,999)
4-1/2 digits, counts by 10 (±20,000)
3-1/2 digits (±2,000)

Press Menu
Select Key

Press Digit
Select Key

ConFG
000_0
Meter Configuration Operation as a rate of
change meter.
Extended meter only.

FiLtr
Filtering

dEc.Pt
Dec. point selection

Press Value Select
Key
0
1
2
3
4
5
6

Not rate of change
Rate x 0.1
Rate x 1
Rate x 10
Rate x 100
Rate x 1000
Rate x 10000

00 _ _0
Operation of front
panel PEAK button
and rear connector for
Peak or Valley Display

000 _0
Auto-tare

0 Meter comes up in normal run mode.
1 Meter comes up in auto-tare mode

000_ 0
Nonlinear input scaling
Extended meter only.

0 Linear input
1 Custom curve linearization

00000
Alarm filtering

0 Unfiltered output
1 Filtered output

00000
Peak & Valley filtering

0 Unfiltered Peak & Valley
1 Filtered Peak & Valley

00000
Display filtering

0 Display batch average every readings
1 Display filtered signal

00000 Filtering for AC
signal

0 Non-adaptive moving average filter
1 High-threshold adaptive moving avg filter

00000
Input signal filtering.
Can be applied to display, setpoint, analog
output, data output.

0
1
2
3
4
5
6
7
8
9
A

d.dddd
Decimal point flashes.

d.dddd dd.ddd ddd.dd dddd.d ddddd.

.ddddd

Press Menu
Select Key

Press Digit
Select Key

Press Value Select
Key

Scaling method “Scale and Offset” if selected under SEtuP
SCALE
Scale factor

OFFst
Offset value

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point
0.0000 0.0000
location is selected by dEC.Pt.
Select digit to flash.

Scaling method “Coordinates of 2 points” if selected under SEtuP
Lo In.
Low signal input.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by input range chosen.
Select digit to flash.

Lo rd
Desired reading at
Lo In.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by
dEC.Pt.
Select digit to flash.

Hi In.
High signal input.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by input range chosen.
Select digit to flash.

Hi rd.
Desired reading at
Hi In.

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Decimal point is set
0.0000 0.0000
by dEC.Pt.
Select digit to flash.

Scaling method “Reading coordinates of 2 points” if selected under SEtuP
Lo In.
Low signal input.

_0.021
Apply a low reference
signal to the meter.

_0.021
Press to store the low signal input in the
meter.

Hi In.
High signal input.

_20.094
Apply a high reference
signal to the meter.

_0.021
Press to store the high signal input in the
meter.

Lo rd
Desired reading at
Lo In.

0.0000 0.0000 0.0000 0.0000
Select -9 thru 9 for flashing first digit, 0 thru 9
0.0000 0.0000
for other flashing digits. Decimal point is set
Select digit to flash.
by dEC.Pt.

Hi rd.
Desired reading at
Hi In.

0.0000 0.0000 0.0000 6.7500
Select -9 thru 9 for flashing first digit, 0 thru 9
0.0000 0.0000
for other flashing digits. Decimal point is set
Select digit to flash.
by dEC.Pt.

Scaling method 2, “Reading Coordinates of 2 Points Scaling Method,” will appear before all
other Menu items, including _InPut. Decimal point is set by dEC.Pt.

14. THERMOCOUPLE INPUT
The thermocouple signal conditioner board used for temperature measurement can be configured via jumpers for 7 thermocouple types, each in a single range: J, K, T, E, N, S, R. The
meter software recognizes the board and will bring up the appropriate menu items for it;
however, it does not recognize the jumper settings. Display in °C or °F and resolution of 1°,
0.1° or 0.01° are user programmable. High resolution should only be used for relative readings,
not absolute readings. Although available, 0.01° resolution is not recommended for thermocouples. Offset adjustment is available for thermocouples and is normally set to 0000.0. If °C is
selected, entering an offset of 0273.2 will change the display to Kelvin. If °F is selected,
entering an offset of 0459.7 will change the display to Rankin.
The addition of a relay output board turns the thermocouple meter from a temperature indicator
into an on/off temperature controller. Please see further manual sections for setup of the
following features: relay output (Section 16), analog output (17), and communications (18).
SIGNAL CONDITIONER BOARD SETUP VIA
JUMPERS

PNP transistor
J5-X

Type
J, K, E, N
T, R, S
Open Indication
Upscale
Downscale
1.
2.
3.
4.

E4 Jumper

J5-Y

none
j

E3 Jumper

h
i

Letters indicate jumper position.
Jumpers are installed on pins adjacent to letters.
Use 2.5 mm (0.1") jumpers.
Store spare jumpers on an unused jumper post.

1
2
3
4

c+b
e
- Sig
+ Sig

KEYSTROKES FOR SETUP
key does not work, see Section 9 “Enabling & Locking Out Menu Items.”
If the MENU

Press Menu
Select Key
_InPut
Selection of signal
input type & range

Press Digit
Select Key
__tC_
Thermocouple

Press Value Select
Key
--.J °F_
...K °F_
...n °F_
_.E °F_
__t °F _
_.S °F_
_.r °F_
.

SEtuP
Meter Setup

_.J °C_
_K-°C_
_-n °C_
...Ek°C_.t °C_
_.S °C_
_.r °C._

Type J, °F or °C
Type K, °F or °C
Type N, °F or °C
Type E, °F or °C
Type T, °F or °C
Type S, °F or °C
Type R, °F or °C

00_00
Display selection.

0
1
2
3

00 _00
Power line frequency

0 Noise minimized for 60 Hz
1 Noise minimized for 50 Hz

00_ 00
Scaling method

0 Offset only for thermocouple input.

00_00
ontrol inputs 1 & 2:
True = logic 1 (0V or
tied to digital ground)
False = logic 0 (5V or
open)

1 = Reset, 2 = Meter Hold
1 = Function Reset, 2 = Peak or Valley
1 = Hold, 2 = Peak or Valley Display
1 = Hold, 2 = Tare
1 = Peak or Valley Display, 2 = Tare
1 = Tare, 2 = Reset
1 = 0, 2 = 0, decimal point 1= XXXXX
1 = 1, 2 = 0, decimal point 1 = XXXX.X
1 = 0, 2 = 1, decimal point 1 = XXX.XX
1 = 1, 2 = 1, decimal point 1 = XX.XXX
7 1 = 0, 2 = 0, decimal point 2 = XXXX.X
1 = 1, 2 = 0, decimal point 2 = XXX.XX
1 = 0, 2 = 1, decimal point 2 = XX.XXX
1 = 1, 2 = 1, decimal point 2 = X.XXXX
8 1 = Function Reset 2 = Display Blank
9 1 = Hold
2 = Display Blank
A 1 = Peak or Valley 2 = Display Blank
B 1 = Tare
2 = Display Blank
C 1 = Valley Display 2 = Peak Display
D 1 = Tare
2 = Tare Reset
Both control inputs 1 & 2 set to 1 for selections 2, 4, A, C = Function Reset.
Both control inputs 1 & 2 set to 1 for selections 0, 1, 3, 5, 8, 9, B, D = Meter Reset.
0
1
2
3
4
5
6

0.1 degree resolution
Remote display (±99,999)
0.01 degree resolution
1 degree resolution

Press Menu
Select Key

Press Digit
Select Key

ConFG
000_0
Meter Configuration
00 _ _0
Operation of front
panel PEAK button
and rear connector for
Peak or Valley Display
FiLtr
Filtering

OFFst
Offset value

Press Value Select
Key
0 No used.
0 Peak Display. Also selects “Peak” in
“Peak or Valley” at rear connector.
1 Valley Display. Also selects “Valley” in
“Peak or Valley” at rear connector.
2 Peak (1st push), Valley (2nd push)
3 Front panel Tare

00000
Alarm filtering

0 Unfiltered output
1 Filtered output

00000
Peak & Valley filtering

0 Unfiltered Peak & Valley
1 Filtered Peak & Valley

00000
Display filtering

0 Display batch average every 16 readings
1 Display filtered signal

00000 Adaptive filter
threshold

0 Low adaptive filter threshold level
1 High adaptive filter threshold level

00000
Input signal filtering.
Can be applied to display, setpoint, analog
output, data output.

0
1
2
3
4
5
6
7
8
9

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Use offset for display
0.0000 0.0000
in Rankine or Kelvin.
Select digit to flash.

Option board dependent menu items
ALSEt. ALS34 dEU1H dEU2H dEU1b dEU2b dEU3H DEU4H DEU3b DEU4b
Menu items related to alarm setup if a relay board is detected. Please see Section16.
AnSEt. An Lo. An Hi..
Menu items related to analog output if detected. Please see Section 17.
SEr 1. SEr 2. SEr 3. SEr 4. _Addr
Menu items related to serial communications if detected. Please see Section 18.

Menu lockout items
Loc 1. Loc 2. Loc 3.
Menu items used to enable or lock out (hide) menu items. Please see Section 9.

15. RTD & RESISTANCE INPUT
The standard RTD and resistance signal conditioner board can be configured via jumpers for
four RTD types (DIN 100Ω platinum, ANSI 100Ω platinum, 120Ω nickel, 10Ω copper) or five
resistance ranges (from 20.000Ω to 200.00 kΩ). A fixed 2 MΩ resistance range (R6 ordering
option) is provided by a factory modified signal conditioner board with component changes.
All ranges are factory calibrated with calibration factors stored in EEPROM on the signal
conditioner board. The meter software recognizes the board and will bring up the appropriate
menu items for it; however, it does not recognize the jumper settings. With RTDs, display in °C
or °F and resolution of 1°, 0.1° or 0.01° are user programmable.
SIGNAL CONDITIONER BOARD SETUP VIA JUMPERS
Standard Board

Modified Board E1 Jumper

Pt100, Ni120
Cu10, 20.000Ω
0 - 200.00Ω
0 - 2.0000 kΩ
0 - 20.000 kΩ
0 - 200.00 kΩ

N/A
N/A
N/A
N/A
N/A
0 - 2.0000 MΩ

a
b
c
d
e
f

Connection

E2 Jumper

2 or 4 wire
3 wire

none
g

1. Program decimal point selection under dEc.Pt menu item.
2. Letters indicate jumper position. Jumpers are installed on pins adjacent to letters.
3. Store spare jumpers on an unused jumper post.
SCALE & OFFSET SETUP
Scale is normally set to 1.0000. Scale can be used as an RTD correction when actual
resistance is other than nominal, as stated on the RTD calibration sheet. For a Pt100 RTD,
divide 100 by the stated resistance at 0°C. For example, for a 99.04 ohm RTD, scale should be
set to 100 / 99.04 = 1.0097.
SIGNAL SHIELDING

Shielding for noise reduction
200 kΩ ranges and above measurements are susceptible to signal noise. To minimize noise
pickup, the input signal wiring should utilize a shielded twisted pair and the shield should be
connected to signal low and earth ground at the meter, as illustrated. Use 2-wire hookup.

RTD & RESISTANCE CONNECTION

With the appropriate jumper settings, RTD
and resistance measurements allow 2, 3 or 4wire RTD hookup to the J5 connector, as
illustrated. The meter applies a fixed excitation current.
In 4-wire hookup, lead resistance is not a
factor, since different pairs of wires are used
for excitation and sensing.
In 3-wire hookup, the meter automatically
compensates for lead resistance by measuring the voltage drop in one current-carrying
lead and assuming that the voltage drop in
the other current-carrying lead is the same.
In 2-wire hookup, the meter senses the
voltage drop across the load and both lead
wires. The effect of the lead wires can be
measured and subtracted by shorting out the
load during meter setup. The short should be
as close as possible to the load. Ambient
temperature changes will still cause some
error in the readings -- the higher the lead
resistance, the greater the error.

To eliminate lead wire resistance, follow this procedure:
Set the InPut menu item and jumpers for the desired range
Set COnFG to 00011.
Short the two leads at the sensor end.
When the display has settled, push the
key. The meter will then store a value proportional to lead resistance, automatically change COnFG to 00010, and then reset. The same
result is obtained by grounding a Control Input that has been selected for Peak or Valley
(SEtuP 00_0Y, where Y = 1, 2, 4, A, C ).
5. Remove the short and connect the sensor. The meter now processes the sensor resistance
only.
1.
2.
3.
4.

If the range and associated jumpers are subsequently changed, the above procedure must be
repeated. This procedure is also available through Instrument Setup software, Revision 2.7.0
or later.

KEYSTROKES FOR SETUP
key does not work, see Section 9 “Enabling & Locking Out Menu Items.”
If the MENU

Press Menu
Select Key
_InPut
Selection of signal
input type & range

SEtuP
Meter Setup

Press Digit
Select Key

Press Value Select
Key

_-rtd_
RTD

.. d °F.. d °C.
.. A °F.. A °C. ni °F ..ni °C.Cu °F.Cu °C-

Pt100 RTD, DIN alpha .00385, °F
Pt100 RTD, DIN alpha .00385, °C
Pt100 RTD, ANSI alpha .003902, °F
Pt100 RTD, ANSI alpha .003902, °C
Ni120 RTD, alpha .00672, °F
Ni120 RTD, alpha .00672, °C
Cu10 RTD, alpha .00427, °F
Cu10 RTD, alpha .00427, °C

OHnnS
Ohmmeter
Set decimal point
under dEc.Pt

.. 20.. 200.
..2000.20000
200.00

0 to 20.000 ohms
0 to 200.00 ohms
0 to 2000.0 ohms
0 to 20000 ohms
0 to 200.00 kohm

00_00
Display selection with
scale factor of 1.

0
1
2
3

00 _00
Power line frequency

0 Noise minimized for 60 Hz
1 Noise minimized for 50 Hz

00_ 00
Scaling method

0 Scale and offset method (RTD & ohms)
1 Coordinates of 2 points (ohms)
2 Reading coordinates of 2 points (ohms)

00_00
Control inputs 1 & 2:
True = logic 1 (0V or
tied to digital ground)
False = logic 0 (5V or
open)

0
1
2
3
4
5
6

0.1° RTD or 4-1/2 digits for ohms
5-digit remote display (±99,999)
0.01° RTD, 4-1/2 digit ohms count by 10
1° RTD or 3-1/2 digits for ohms

Press Menu
Select Key
SEtuP
Meter Setup
(continued)

Press Digit
Select Key
00_00
Control inputs 1 & 2
(continued)

ConFG
00000 Operation as a
Meter Configuration rate of change meter.
Extended meter only.

8 1 = Function Reset 2 = Display Blank
9 1 = Hold
2 = Display Blank
A 1 = Peak or Valley 2 = Display Blank
B 1 = Tare
2 = Display Blank
C 1 = Valley Display 2 = Peak Display
D 1 = Tare
2 = Tare Reset
Both control inputs 1 & 2 set to 1 for selections 2, 4, A, C = Function Reset.
Both control inputs 1 & 2 set to 1 for selections 0, 1, 3, 5, 8, 9, B, D = Meter Reset.
0 Not rate of change 3 Rate x 10
1 Rate x 0.1
5 Rate x 1000
2 Rate x 1
6 Rate x 10000

00000
Operation of front
panel PEAK button
and rear connector for
Peak or Valley Display

00000
Auto-tare selection

0 No auto-tare
1 Auto-tare

00000
RTD or Ohms wiring

FiLtr
Filtering

Press Value Select
Key

00
01
10
11

RTD
3 or 4 wire
Not allowed
2-wire read
2-wire short

Ohms
3 or 4 wire
Custom curve
2-wire read
2-wire short

00000
Alarm filtering

0 Unfiltered output
1 Filtered output

00000
Peak & Valley filtering

0 Unfiltered Peak & Valley
1 Filtered Peak & Valley

00000
Display filtering

0 Display batch average every 16 readings
1 Display filtered signal

00000 Adaptive filter
threshold

0 Low adaptive filter threshold level
1 High adaptive filter threshold level

Press Menu
Select Key

Press Digit
Select Key

Press Value Select
Key

FiLtr
Filtering
(continued)

00000
Input signal filtering.
Can be applied to display, setpoint, analog
output, data output.

0
1
2
3
4
5
6
7
8
9
A

dEc.Pt
Decimal point
selection

d.dddd
Decimal point flashes
if ohms are selected
under _InPut

d.dddd dd.ddd ddd.dd dddd.d ddddd.

SCALE
Scale factor

OFFst
Offset value

0.0000 0.0000 0.0000 Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Use offset for display
0.0000 0.0000
in Rankine or Kelvin. Decimal point location
Select digit to flash.
is selected by dEC.Pt.

.ddddd

Option board dependent menu items
ALSEt. ALS34 dEU1H dEU2H dEU1b dEU2b dEU3H DEU4H DEU3b DEU4b
Menu items related to alarm setup These will only appear if a relay board is detected. If so,
please see Section16.
AnSEt. An Lo. An Hi..
Menu items related to analog output setup. These will only appear if an analog output
board is detected. If so, see Section 17.
SEr 1. SEr 2. SEr 3. SEr 4. _Addr
Menu items related to serial communications. These will only appear if an RS232, RS485,
or USB I/O board is detected. If so, see Section 18.

Menu lockout items
Loc 1. Loc 2. Loc 3.
Menu items used to enable or lock out (hide) other menu items. Loc menu items may in turn
be locked out by a hardware jumper. Please see Section 9.

16. DUAL OR QUAD RELAY OUTPUT OPTION
An optional relay board may be installed in the
meter main board at plug position P2, adjacent to
the power supply board. Four board versions are
available: 2 or 4 relays, mechanical or solid state.
Once installed, the relay board is recognized by
the meter software or PC-based Instrument Setup
software, which will bring up the appropriate menu
items for the type of board. These menu items will
not be brought up if no relay board is detected.
Menu selections for relays 3 and 4 will not be
brought up if the dual relay board is detected. All
relay boards offer a choice of operating modes: normally off or on, latched or non-latched,
hysteresis band, deviation band, alarm based on the filtered or unfiltered signal, and selectable
number of readings in alarm zone to cause an alarm.
KEYSTROKES FOR VIEWING & CHANGING SETPOINTS

The
(Alarms) key can be used to step through and view setpoints while the meter continues to make conversions and performs setpoint control. If the (Peak) key is pressed while
a setpoint is displayed, conversion stops and the setpoint can be changed. After pressing
,
you have 30 seconds, or the meter reverts to the normal display. To view setpoints, menu item
Loc3, digit 2, must have been set to 0. To change setpoints, menu item Loc2, digit 2, must
have been set to 0.
Press Alarms
Key

Press Digit
Select Key

Press Value Select
Key

300.24
Press
(Alarms)
to display Alarm 1
setpoint.

_200.00
Current setpoint 1 value blinks, and
Alarm 1 LED indicator lights. Press
to select a digit, which will blink.

_295.00
To change setpoint 1 value,
press to change selected
blinking digits.

395.00
Press
(Alarms)
to display Alarm 2
setpoint.

_395.00
Current setpoint 2 value blinks, and
Alarm 2 LED indicator lights. Press
to select a digit, which will blink.

_305.00
To change setpoint 2 value,
press to change selected
blinking digits.

395.00
Press
(Alarms)
to display Alarm 3
setpoint.

_395.00
Current setpoint 3 value blinks, and
Alarm 3 LED indicator lights. Press
to select a digit, which will blink.

_305.00
To change setpoint 3 value,
press to change selected
blinking digits.

395.00
Press
(Alarms)
to display Alarm 4
setpoint.

_395.00
Current setpoint 4 value blinks, and
Alarm 4 LED indicator lights. Press
to select a digit, which will blink.

_305.00
To change setpoint 4 value,
press to change selected
blinking digits.

300.24 Press

(Alarms) again. Meter will reset and display current reading.

KEYSTROKES FOR SETPOINT SETUP
If the MENU
key does not work, see Section 9 “Enabling & Locking Out Menu Items.”

Press Menu
Select Key

Press Digit
Select Key

Press Value Select
Key

ALSEt
Alarm Setup for
relays 1 & 2 if
detected.

00000
Relay alarm state
when alarm is active.

0
1
2
3

Relay 1 active on
Relay 1 active off
Relay 1 active on
Relay 1 active off

Relay 2 active on
Relay 2 active on
Relay 2 active off
Relay 2 active off

Press
until
ALSEt is displayed.

00000
Alarm latching or nonlatching (auto reset).

0
1
2
3

AL1 non-latching
AL1 latching
AL1 non-latching
AL1 latching

AL2 non-latching
AL2 non-latching
AL2 latching
AL2 latching

00000
Alarm operates at and
above setpoint (active
high) or at and below
setpoint (active low).

0
1
2
3
4
5
6
7
8

AL1 active high
AL1 active low
AL1 disabled
AL1 active high
AL1 active low
AL1 disabled
AL1 active high
AL1 active low
AL1 disabled

AL2 active high
AL2 active high
AL2 active high
AL2 active low
AL2 active low
AL2 active low
AL2 disabled
AL2 disabled
AL2 disabled

00000
Hysteresis mode or
band deviation mode

0
1
2
3
4
5
6
7

AL1 band deviation AL2 band deviation
AL1 split hysteresis AL2 band deviation
AL1 band deviation AL2 split hysteresis
AL1 split hysteresis AL2 split hysteresis
No deviation or hysteresis in menu.
AL1 span hysteresis AL2 band deviation
AL1 span hysteresis AL2 split hysteresis
AL1 span hysteresis AL2 span hysteresis

00000
Number of consecutive
readings in alarm zone
to cause an alarm.

0
1
2
3

After 1 reading
After 2 readings
After 4 readings
After 8 readings

4
5
6
7

00000
Relay alarm state
when alarm is active.

0
1
2
3

Relay 3 active on
Relay 3 active off
Relay 3 active on
Relay 3 active off

Relay 4 active on
Relay 4 active on
Relay 4 active off
Relay 4 active off

00000
Alarm latching or nonlatching (auto reset).

0
1
2
3

AL3 non-latching
AL3 latching
AL3 non-latching
AL3 latching

AL4 non-latching
AL4 non-latching
AL4 latching
AL4 latching

ALS34
Alarm Setup for
relays 3 & 4 if
detected.

After 16 readings
After 32 readings
After 64 readings
After 128 reading

Press Menu
Select Key
ALS34
Alarm Setup for
relays 3 & 4
(continued)

dEU1H
Alarm 1
hysteresis

Press Digit
Select Key
00000
Alarm operates at and
above setpoint (active
high) or at and below
setpoint (active low).

0
1
2
3
4
5
6
7
8

AL3 active high
AL3 active low
AL3 disabled
AL3 active high
AL3 active low
AL3 disabled
AL3 active high
AL3 active low
AL3 disabled

AL4 active high
AL4 active high
AL4 active high
AL4 active low
AL4 active low
AL4 active low
AL4 disabled
AL4 disabled
AL4 disabled

00000
Hysteresis mode or
band deviation mode
(see Glossary)

0
1
2
3

AL3 band deviation
AL3 hysteresis
AL3 band deviation
AL3 hysteresis

AL4 band deviation
AL4 band deviation
AL4 split hysteresis
AL4 hysteresis

00000
Number of consecutive
readings in alarm zone
to cause an alarm.

0
1
2
3

After 1 reading
After 2 readings
After 4 readings
After 8 readings

4
5
6
7

0.0000 0.0000 0.0000
0.0000 0.0000
Select digit to flash.

Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Alarms will activate
above the setpoint by the value entered and
deactivate below the setpoint by the value
entered.

0.0000 0.0000 0.0000
0.0000 0.0000
Select digit to flash.

Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Alarms will activate
above and below the setpoint by the value
entered and will deactivate in the middle of
the band.

0.0000 0.0000 0.0000
0.0000 0.0000
Select digit to flash.

Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Alarms will activate
above the setpoint by the value entered and
deactivate below the setpoint by the value
entered.

0.0000 0.0000 0.0000
0.0000 0.0000
Select digit to flash.

Select -9 thru 9 for flashing first digit, 0 thru 9
for other flashing digits. Alarms will activate
above and below the setpoint by the value
entered and will deactivate in the middle of
the band.

DEU2H
Alarm 2
hysteresis
DEU1b
Alarm 1 band
deviation
DEU2b
Alarm 2 band
deviation
dEU3H
Alarm 3
hysteresis
DEU4H
Alarm 4
hysteresis
DEU3b
Alarm 3 band
deviation
DEU4b
Alarm 4 band
deviation

Press Value Select
Key

After 16 readings
After 32 readings
After 64 readings
After 128 reading

17. ANALOG OUTPUT OPTION
An optional analog board may be installed in the meter at rear panel jack position J4, adjacent
to the signal conditioner board. Once installed, this board is recognized by the meter, which
will bring up the appropriate menu items for it. These will not be brought up if an analog output
board is not installed.
The analog output can be a 0-20 mA, 4-20 mA or 0-10V unipolar signal with respect to isolated
ground, or a bipolar -10V to +10V voltage signal with respect to a reference return line.
Unipolar or bipolar operation is selected by a jumper. A unipolar current or voltage output is
selected at the connector. Unipolar 4-20 mA or 0-20 mA current is selected in software.

Unipolar current of voltage: Jumper a
Bipolar -10 to +10 voltage: Jumper b
The low analog output (0 mA, 4 mA, 0V, or -10V) may be set to correspond to any low
displayed reading An Lo. The high analog output (20 mA, 0V or 10V) may be set to correspond to any high displayed reading An Hi. The meter will then apply a straight line fit between
these two end points to provide an analog output scaled to the meter reading.
KEYSTROKES FOR SETUP
If the MENU
key does not work, see Section 9 “Enabling & Locking Out Menu Items.”

Press Menu
Select Key

Press Digit Select
Key

Press Value Select
Key

AnSEt
Analog Output Setup.
Press
until AnSEt
is displayed (requires
analog output board).

___00
Analog output signal
selection.

0
1
2
3

___00
Analog output filtering.

0 Analog output unfiltered
1 Analog output filtered

An Lo
Low displayed value
for 0 mA, 4 mA, 0V, or
-10V output

0.0000 0.0000 0.0000
0.0000 0.0000
Select digit to flash.

Select -9 thru 9 for flashing first
digit, 0 thru 9 for other flashing
digits. Decimal point location is
fixed by dEC.Pt selection.

An Hi.
High displayed value
for 20 mA or 10V output

0.0000 0.0000 0.0000
0.0000 0.0000
Select digit to flash.

Select -9 thru 9 for flashing first
digit, 0 thru 9 for other flashing
digits. Decimal point location is
fixed by dEC.Pt selection.

0-20 mA current output
0-10V voltage output
4-20 mA current output
-10 to +10V voltage output

18. SERIAL COMMUNICATION OPTIONS
A serial communications board may be connected to the meter main board at plug position
P13 (middle position). Available boards are RS232, RS485 (with dual RJ11 connectors),
RS485 Modbus (with dual RJ45 connectors), USB, USB-to-RS485 converter, Ethernet, and
Ethernet-to-RS485 converter. The dual connectors of RS485 boards are wired in parallel to
allow daisy chaining of addressable meters without use of a hub. Three serial communication
protocols are selectable for all serial boards: Custom ASCII, Modbus RTU, and Modbus ASCII.
A USB-to-RS485 converter board or an Ethernet-to-RS485 converter board allows a meter
to be interfaced to a computer and be the device server for a network of up to 31 other meters
on an RS485 bus, while itself retaining all capabilities of a meter. The remote meters need to
be equipped with our RS485 digital interface board with dual 6-pin RJ11 jacks, not our RS485
digital interface with dual 8-pin RJ45 jacks. The dual 6-pin RJ11 jacks on the RS485 board are
wired in parallel to allow multiple meters to be daisy-chained using 6-wire data cables with no
need for hand-wiring or an RS485 hub. The outer two wires are used for ground.
Use 6-wire, straight-through data cables, not 4-wire telephone cables or crossover cables,
all the way from the device server to the last device on the RS485 bus. Connect ATX to ATX,
BTX to BTX, etc., with no crossover as you go from device to device.
To connect a meter with a USB board to a Windows PC, use a USB cable with Type A and
Type B connectors. Upon first connection, your computer may display “Found new Hardware”
and automatically download and install the required USB driver from the Internet. If installation
is not automatic, download the driver file (with a name like CDM v2.10.00 WHQL Certified.zip)
from http://www.ftdichip.com/Drivers/VCP.htm. Unzip it into its own directory, and point to that
directory as the location of the driver. You will need to use Device Manager (accessible from
Control Panel) to determine the com port. Go down the device list and click on Ports (COM &
LPT) and USB serial port (com #). Note the com port # for use with communications to your
meter, then exit Control Panel. If you later need to change the Com port, right-click on USB
serial port (com #), then on Properties, Port settings, and Advanced. Change port to the
desired number, click OK, then exit Control Panel.
To connect a meter with an Ethernet board to a computer, see our separate Ethernet
Manual, which covers our Node Manager Software. This Windows-based application runs on a
host computer and is used to configure our Ethernet Nodes. It automatically discovers all
Nodes on a LAN or WAN, plus any devices connected to Server Nodes via an RS485 bus. It is
used to configure each Node, such as setting communication parameters, naming the Node
and associated devices, entering email addresses for alarm notification and data requests,
selecting the Node's time zone for time-stamping of emails and streaming data, and upgrading
firmware. Once configuration data has been stored in flash memory of all Nodes, Node
Manager Software can be closed. Node resident web server software is also provided.
BOARD SETUP VIA JUMPERS

USB Board
No jumpers required.

Basic Ethernet Board
No jumpers needed.

RS232 Board
e - Normal operation.
f - Slave display to RS232 from another meter.
g - Pull-up resistor on RTS line.
Note: Board is shipped with jumpers e and g installed
RS485 Board, Full Duplex Operation
b & d - Installed on last meter in long cable run.
RS485 Board, Half Duplex Operation
a & c - Installed for half duplex operation.
d - Installed on last meter in line with long cable runs.
Note: Board is shipped with no jumpers installed.
RS485-Modbus Board, Full Duplex Operation
b & e - Bias jumpers should be installed on 1 board.
a & d - Installed on last meter in long cable run.
RS485-Modbus Board, Half Duplex Operation
b & e - bias jumpers installed on 1 board.
c & f - installed for half duplex operation.
a - installed on last meter in line with long cable runs.
Note: Board is shipped with no jumpers installed.

Ethernet-to-RS485 Converter Board
& USB-to-RS485 Converter Board
Full Duplex Operation
No jumpers for short cable runs.
Add b & d for long cable runs.
Half Duplex Operation
a & c - Installed for half duplex operation.
d - Installed on last meter in line with long cable runs.

d c
a

RJ45
RJ45

Modbus

SERIAL CONNECTION EXAMPLES

KEYSTROKES FOR SETUP
If the MENU
key does not work, see Section 9 “Enabling & Locking Out Menu Items.”

Press Menu
Select Key
.SEr 1.
Fixed Parameters:
No parity
8 data bits
1 stop bit

Press Digit Select
Key

Press Value Select
Key

__000
Output filtering

0 Send unfiltered signal
1 Send filtered signal

__000U
Baud rate

0
1
2
3
4
5
6

300 baud
600 baud
1200 baud
2400 baud
4800 baud
9600 baud
19200 baud

0
1
2
3
4
5
6
7
8
9

60 Hz
Line frequency
0.28 sec
0.57 sec
1.1 sec
2.3 sec
4.5 sec
9.1 sec
18.1 sec
36.6 sec
72.5 sec

__000U
Output update rate

50 Hz
Line frequency
0.34 sec
0.68 sec
1.4 sec
2.7 sec
5.4 sec
10.9 sec
21.8 sec
43.5 sec
97 sec

Press Menu
Select Key

Press Digit Select
Key

Press Value Select
Key

_0000U
Line feed

0 No line feed after carriage return
1 Line feed after carriage return

_0000U
Alarm data with readings

0 No alarm data
1 Alarm data with reading

_0000U
Control of data output

0 Continuous data output
1 Data output on ASCII command only

_0000U
Meter address with Custom
ASCII protocol

Select 1 thru F for addresses 1 thru 15.
Select 0. thru F. (with decimal point) for
addresses 16 thru 31.

00000U
Half or full duplex

0 Full duplex
1 Half duplex

00000U
Special start & stop char.

0 Standard continuous mode
1 Special start & stop characters

00000U
RTS mode

0 Normal RTS
1 Single transmission

00000U
Termination characters

0 Only at end of all items
1 At end of each item

.SEr 3.
Serial Setup 3
(continued)

00000U
Data sent in continuous
mode

0
1
2
3
4
5

Reading
Peak
Valley
Reading + peak
Reading + valley
Reading + peak + valley

SEr 4.
Serial Setup 4.

__000U
Modbus ASCII gap timeout

0
1
2
3

1 sec
3 sec
5 sec
10 sec

__000U
Serial protocol

0 Custom ASCII
1 Modbus RTU
2 Modbus ASCII

__000U
Parity

0 None, 2 or more stop bits
1 Odd, 1 or more stop bits
2 Even, 1 or more stop bits

__000 __000 __000
Select digit to flash.

__247
Select 0 through 9 for flashing digit.
Address range is 1 to 247.

.SEr 2.
Serial Setup 2

.SEr 3.
Serial Setup 3

_Addr
Modbus Address.
Appears only if the
Modbus protocol is
selected.

19. EXCITATION OUTPUT & POWER SUPPLY
Three isolated transducer excitation output levels are available from the power supply board.
These are selectable via jumpers b, c, d, e, f in the upper right of the board, as illustrated.
In addition, the board provides three jumper positions for special features. The same jumper
locations apply to the universal power supply (85-264 Vac) and to the low voltage power
supply (12-32 Vac or 10-48 Vdc).

Excitation output

Jumper locations

5 Vdc ±5%, 100 mA max

b, d, e

10 Vdc ±5%, 120 mA max

b, d, f

24 Vdc ±5%, 50 mA max

SELECTION OF OTHER JUMPERS
Jumper a - Front panel menu lockout, locked when installed. (See Section 9)
Jumper g - Provides +5V power output at P1-4 when installed.
Jumper h - Connects "Control Input 2" to P1-4 when installed.

20. INSTRUMENT SETUP VIA PC
Instrument Setup software is a PC program which is much easier to learn than front panel
programming. It is of benefit whether or not the meter is connected to a PC. With the meter
connected to a PC, it allows uploading, editing and downloading of setup data, execution of
commands under computer control, listing, plotting and graphing of data, and computer
prompted calibration. With the meter unconnected to a PC, it provides quick selection of
jumper locations and a printable display of menu selections for front panel setup.
SOFTWARE INSTALLATION

Download IS2*.exe onto your PC from the web or the distribution CD. Double-click on the
downloaded file to unzip it into a special directory, such as c:\temp. Within that directory,
double-click on setup.exe, which will install the software on your PC.
PREREQUISITES FOR CONNECTED USE
1) PC with an available RS232 or USB port.
2) Meter to be set up.
3) RS232 or USB board in the meter. This board
can be removed following meter setup.
4) RJ11-to-DB9 cable from the meter to a PC
RS232 com port, or a USB cable to a PC USB
port (see Section 1, Ordering Guide).
5) Instrument Setup software.
ESTABLISHING COMMUNICATIONS

Connect the meter and PC. Apply power to the meter. Be sure that the meter is in Run
Mode, not Setup Mode. To start the software from Windows, click on Start => Programs =>
IS2 => IS2. Click on RS232 => Establish. The program will temporarily set the selected Com
port to the required baud rate, parity, data bits and stop bit. Once communications have
been established, click on Main Menu. The software will sense the type of meter and
installed boards, but it cannot sense jumpers positions nor set jumpers for you. If the
computer is not connected to a meter, select DPM and Series 2.

SETUP OF CONNECTED METER

A setup file can be retrieved from the meter (DPM => Get Setup), be edited (View =>
Setup), be saved to disk (File => Save Setup), be retrieved from disk (File => Open Setup),
and be downloaded into one or multiple meters (DPM => Put Setup). Downloading of setup
files from a PC can be a major time saving when multiple meters have to be set up in the
same way.
You will find that Instrument Setup software is very user friendly, with separate tabselectable windows for Input+Display, Scaling, Filter, Relay Alarms, Communications,
Analog Out, and Lockouts. If the required hardware, such as the analog output board, is not
sensed, the corresponding tab will be grayed out.
ADDITIONAL FEATURES

• The Commands pull-down menu allows you to execute certain meter functions by using
your computer mouse. You can reset individual meter functions, display current or peak
readings, and enter numbers to be displayed remotely by the DPM. The first position of a
transmitted number must be a blank, + sign or - sign. Five digits and a decimal point must
be transmitted. Leading 0’s serve as blanks. The Commands pull-down menu will be grayed
out unless a Get Setup has been executed.

Plot

Graph
50

• The Readings pull-down menu provides three formats to display DPM data on the PC
monitor. Use the Pause and Continue buttons to control the timing of data collection, then
press Print for a hardcopy using your PC printer.
- List presents the latest readings in a 20-row by 10-column table. Press Pause at any
time to freeze the display. Press Print for a hardcopy. List can capture peak readings.
- Plot generates a plot of readings vs. time in seconds. It effectively turns the DPM-PC
combination into a printing digital oscilloscope.
- Graph generates a histogram, where the horizontal axis is the reading and the vertical
axis is the number of occurrences of readings. The display continually resizes itself as
the number of readings increases.
• The Jumpers pull-down menu provides
jumper positions for the various meter boards,
duplicating information in this manual.
• The Calibration pull-down menu allows
easy calibration of voltage and current ranges
for the DC, load cell, and AC RMS signal
conditioner boards. The PC first recognizes
the type of board, then prompts you to apply
specific jumpers and calibration signals. Press
Ready to take a reading. Press Repeat to take
more readings. When you have decided on
which reading to accept, press on the number
1 through 10 of that reading. Additional calibration software is available online.
METER SETUP WITH AN UNCONNECTED PC

Instrument Setup software is also of benefit when the
PC is not connected to a meter. Upon launching the
software, click on None for Communications, then on
DPM and Series 2. Click on File => Default Setup to
retrieve a default setup file from disk, or on File => Open
Setup to retrieve a previously saved setup file from disk.
To enter new setup information, click on View => Setup,
then make your screen selections as if you were
connected to a meter. Tabs will be grayed out if you
have not selected the required hardware under the
Input+Display tab. When done, press on Main Menu,
then on View => Menu. The selections made under
Setup will now be shown in the form of the required front
panel programming sequence, where each row corresponds to a menu item selected by the
key, and the seven data columns correspond to values entered via the and keys.
Click on any step in the sequence to bring up a detailed help window.
Click on Print for a hardcopy, which you can then use as an instruction sheet to program
your meter via its front panel.
Click on Main Menu => File => Save Setup As to save your setup to disk and have an
electronic record.
51

21. CUSTOM CURVE LINEARIZATION
Curve.exe is a DOS-based, executable PC program used to set up an Extended meter so that
the readings have a user-defined, non-linear relationship with the input signal. The calculated
linearizing parameters are downloaded into non-volatile memory of the meter. For example, it
allows a meter to correct for transducer nonlinearity or to display volume of an irregularly
shaped tank based on liquid level. The curvefitting algorithm uses quadratic segments of
varying length and curvature, and provides
diagnostics to estimate curve fitting errors.
The program is self-prompting, avoiding the
need for a detailed printed manual. This
manual section is only intended as an introduction and get-started guide.
PREREQUISITES
1) PC-compatible computer with an available RS232 or USB port.
2) Extended meter.
3) An RS232 or USB board in the meter. This board
can be removed following meter setup.
4) An RJ11-to-DB9 RS232 cable or a USB cable
to connect the meter to the PC (see Section 1,
Ordering Guide).
5) Curve.exe software (downloadable from the web
at no charge).
GETTING STARTED

Download curve.exe into the same directory that will contain your data files, such as
c:\curves. Set the meter baud rate to 9600. To do so, press the
key to get to SEr 1, then
set the entry to __050. Set the meter address to 1. To do so, press the
key to get to SEr
2, then set the entry to _0011. To execute the program from Windows, simply double-click
on curve.exe, which is an executable file. Follow the steps on computer screens, which will
prompt you and provide extensive information. Pressing R (Enter) returns to the main menu.
You will be given the choice to enter your data in one of four modes:
1) Text file entry mode, with an X value in one column and a Y value in another. There
can be additional columns, which are ignored. The file must have a DOS name of up to
8 characters and the extension .RAW. There can be from 5 to 180 rows. X is the input
value and should be in the unit of measure for which the meter was set up, such as mV,
V, mA or A. Y is the desired corresponding reading and can range from -99999 to
99999 with any decimal point.
2) 2-coordinate keyboard entry mode, where an actual X input signal is applied, and the
desired Y reading is entered from the keyboard.
3) 2-coordinate file entry mode, where an actual X input signal is applied, and the
desired Y reading is provided from a file.

4) Equation entry mode, where the coefficients of a polynomial Y = K1X^P1 + K2X^P2 +
K3*X^P3 + … are entered. Up to 20 terms are allowed. An offset can be built into X.

You will be asked if your DPM has a revision of DPM4L or later. You will normally select 2
(yes), since revision DPM4L started to ship in August 2000.
You will be asked to supply the following:
LOW X-COORDINATE VALUE >
LOW INPUT MEASUREMENT VALUE >
HIGH X-COORDINATE VALUE >
HIGH INPUT MEASUREMENT VALUE >
This informs the computer of your signal conditioner jumper settings. Enter 0 and 0 for
the two LOW values. For HIGH X, enter your signal conditioner jumper range in the
same units of measure that you will be using in your *.RAW data input file. Enter 20 for
20 mV or 20V. Enter 200 for 200 mV or 200V. Enter 5 for 5A AC or DC. For HIGH
INPUT MEASUREMENT VALUE, enter 20000, except for 5A DC, where you should
enter 5000.
Position of the decimal point from 6=X.XXXXX, 5= XX.XXX, 4=XXX.XXX, 3=XXXX.XX,
2=XXXXX.X, 1=XXXXXX (for DPMs, the leading X is a blank). Specify the same position
that you specified in the dEc.Pt decimal point menu selection.
Follow the steps on the screens to finish generating the custom curve. When prompted to
download the file to the meter, select Y. When prompted to set the meter to custom curve
mode, also select Y.
KEYPAD CONTROL

You can take a meter in and out of custom curve linearization using the meter keypad.
From the Menu mode, press the
key to get to ConFG, then set the fifth digit to either 0
(normal linear operation) or to 1 (custom curve operation). This fifth digit will only be
displayed with an Extended meter.
FILES USED OR CREATED BY CURVE.EXE
1) *.RAW is the raw input file generated by all four data entry methods.
2) *.DVD adds three columns from which the smoothness of the input data and obvious
input errors can be judged. The more data points and the smoother the data, the better
the curve fit.
3) *.NUM lists Y readings prior to custom curve linearization and addition of the decimal
point.
4) *.CCF is an internal file used by the software.
5) *.SIM lists simulated linearized meter readings and calculated corresponding errors.
6) *.PRM contains the final hex data that is downloaded into the meter.

22. METER CALIBRATION
All analog input and analog output ranges of the meter have been digitally calibrated at the
factory prior to shipment using calibration equipment certified to NIST standards. Calibration
constants are stored digitally in non-volatile memory in EEPROM on the signal conditioner
board and analog output board. This allows the boards to be changed without requiring meter
recalibration. Digital calibration also eliminates much of circuitry that would be associated with
analog calibration, providing superior long term accuracy and stability.
If periodic recalibration is required, the meter may be returned to the factory or to any
authorized distributor. A modest fee will apply, which also covers a Calibration Certificate.
DC, load cell, AC RMS, and thermocouple signal conditioner boards can be calibrated
using Instrument Setup Software running on a host PC (Section 20). An RS232, RS485, USB
or Ethernet interface board must be installed in the meter for communication to the PC. This
board may be removed following calibration. A certified, calibrated signal source is also
required. The Calibration screen of Instrument Setup Software is accessed by clicking on
Calibration at the top of the DPM Main Menu screen. The PC first recognizes the type of
board, then prompts you to apply specific jumpers and specific known signals for each range.
Press Repeat to take more readings. When you have decided on which reading to accept,
press on the number 1 through 10 of that reading.
The RTD/Ohms signal conditioner board cannot be calibrated using the Calibration screen
of Instrument Setup Software. Instead, use the Scaling tab under Setup. Here you can enter
values for Scale and Offset for a specific range. These corrections apply to resistance, not to
RTD temperature. To calibrate RTD temperature, refer to the published resistance table for
your RTD type, and calibrate resistance. For example, if your measured resistances are 0.1%
low, apply a scale factor of 1.01.

23. SPECIFICATIONS
Meter Display

Type ....................................5 LED, 7-segment, 14.2mm (.56") high digits & 3 LED indicators
Color....................................................................................................................Red or green
Range.................................................................... -99999 to +99999 and -99990 to +99990
A to D Conversion

Technique (Pat.5,262,780)........................................................................ Concurrent SlopeTM
Read Rate ............................................................... 60/s for 60 Hz NMR, 50/s for 50 Hz NMR
Output Update Rate .....................................................................56/s at 60 Hz, 47/s at 50 Hz
Display Update Rate .....................................................................3.5/s at 60 Hz, 3/s at 50 Hz
Noise Rejection

CMV from DC to 60 Hz................................................................................Withstand 250Vac
Dielectric strength....................................................... 3.5 kV ac for 5 sec, 2.3 kV ac for 1 min
CMR from DC to 60 Hz ................................................................................................ 130 dB
NMR at 50/60 Hz...............................................................90 dB with minimum digital filtering
Control Inputs (CMOS/TTL levels, logic 0 = tied to digital ground, logic 1 = open)

/ Hold input ..........................................................................Logic 0 holds display and outputs
/ Peak or Valley input .........................................................Logic 0 displays peak/valley value
/ Tare input ......................................................................... Logic 0 offsets input value to zero
/ Tare Reset..........................................................................Logic 0 resets Tare value to zero
/ Reset input ........................................................................ Logic 0 resets all meter functions
/ Function Reset input .................................................Logic 0 resets peak values and alarms
/ Decimal Point input .....................Overrides internal DP selections and controls DP position
/ Display Blank input.....................................................................Logic 0 shuts off the display
Power Requirements

Input Voltage rating (standard) .........85-264 Vac or 90-300 Vdc (DC range not UL approved)
Input Voltage rating (low voltage option) ............................................ 12-32 Vac or 10-48 Vdc
Power Line Frequency ................................................................................. DC and 47-63 Hz
Power Consumption, Max ........................................................................................... 5 Watts
Excitation Outputs

Voltage & Current Levels (jumper selectable) .................................. 5 Vdc ±5%, 100 mA max
....................................................................................................... 10 Vdc ±5%, 120 mA max
........................................................................................................ 24 Vdc ± 5%, 40 mA max
Excitation Output Ripple.....................................................................................100 mVp max
Isolation from power and outputs ............................................................................... 250 Vac
Insulation dielectric strength to power and outputs..... 3.5 kV ac for 5 sec, 2.3 kV ac for 1 min
Isolation to signal common........................................................................................... 50 Vdc
Input Types, Ranges, Resolution, Error at 25°C

Thermocouple (0.1°, 1° resolution)

DC Volts

Range

Resol.

Resist.

200.00 mV
2.0000 V
20.000 V
200.00 V
300.0 V

10 µV
100 µV
1 mV
10 mV
100 mV

1 GΩ
1 GΩ
10 MΩ
10 MΩ
10 MΩ

Error

Type

0.01%
of FS
±2 cts

-210 to 760°C .01% FS ±0.09°C
-347to 1400°F .01% FS ±0.16°F

-244 to 1372°C .01% FS ±0.10°C
-408to 2501°F .01% FS ±0.17°F

T
Resol.

Resist.

Error

2.0000 mA
20.000 mA
200.00 mA

0.1 µA
1 µA
10 µA

100 Ω
10 Ω
1Ω

0.01%
of FS
±2 cts

0.01 Ω

0.1%
of FS
±5 cts

5.000 A

1 mA

True RMS Volts (0% to 100% of Full Scale,
0 Hz and 10 Hz to 10 kHz, crest factor 3.0)

Range

Resol.

Resist.

Error

200.00 mV
2.0000 V
20.000 V
200.00 V

10 µV
100 µV
1 mV
10 mV

22 MΩ
22 MΩ
1 MΩ
1 MΩ

0.1%
of FS
±2 cts

600.0 V

100 mV

1 MΩ

Error

DC Amps

Range

0 to 400°C
-257 to 0°C

.01% FS ±0.03°C
.01% FS ±0.20°C

32 to 752°F
-430 to 32°F

.01% FS ±0.05°F
.01% FS ±0.36°F

-240 to 1000°C .01% FS ±0.18°C
-400 to 1830°F .01% FS ±0.32°F

-245 to 1300°C .01% FS ±0.10°C
-410 to 2370°F .01% FS ±0.17°F

-46 to +1768°C .01% FS ±0.12°C
-51 to +3213°F .01% FS ±0.22°F

-45 to 1768°C
-49 to 3214°F

.01% FS ±0.17°C
.01% FS ±0.31°F

RTD (0.01°, 0.1°, 1° resolution)

Type

True RMS Amps (0% to 100% of Full Scale,
0 Hz and 10 Hz to 10 kHz, crest factor 3.0)

Range

Error

Pt 100Ω
.00385

-202 to 850°C .01% FS ±0.03°C
-331 to 1562°F .01% FS ±0.05°F

Pt 100Ω
.003925

-202 to 631°C .01% FS ±0.04°C
-331 to 1168°F .01% FS ±0.07°F

Range

Resol.

Resist.

Error

Ni 120Ω
.00672

-80 to 260°C
-112 to 500°F

.01% FS ±0.05°C
.01% FS ±0.09°F

2.0000 mA
20.000 mA
200.00 mA

0.1 µA
1 µA
10 µA

100 Ω
10 Ω
1Ω

0.1%
of FS
±2 cts

Cu 10Ω
.00427

-97 to 260°C
-143 to 500°F

.01% FS ±0.05°C
.01% FS ±0.09°F

5.000 A

1 mA

0.01 Ω

20 mA

Ratio, Potentiometer Follower, Strain

Resistance Measurement

Range

Resolution

Error

0-20.000Ω
0-200.00Ω
0-2000.0Ω
0-20000 Ω
0-200.00 kΩ

1 mΩ
10 mΩ
100 mΩ
1Ω
10 Ω

0.01%
of FS
±2 cts

Range

Resol.

Resistance

Error

200.00 mV
2.0000 V
20.000 V

10 µV
100 µV
1 mV

1 GΩ
1 GΩ
1 MΩ

0.01%
of FS
±2 cts

Load Cell Input

Range

Resolution

Resistance

Zero Range

Span Range

Error

20.000 mV
50.000 mV
100.00 mV
250.00 mV
500.00 mV

1 µV
2.5 µV
5 µV
12.5 µV
25 µV

1 GΩ

-99999 to
99999

0 to ±99,999

0.01% of FS
±2 cts

Thermocouple Accuracy

Span Tempco .........................................................................................0.003% of reading/°C
............................................................................... 0.0015% of reading/°C for load cell meter
Zero Tempco ............................................................................................................ 0.2 µV/°C
Reference Junction Accuracy .....................................................................1°C, 10°C to 40°C
Dual & Quad Relay Options

Power to Relay Option ................................................................................Powered by meter
Setpoint Setup....................................................... Via front panel pushbuttons or RS232/485
Update Rate .................................................................................56/s at 60 Hz, 47/s at 50 Hz
Response to input signal (min) ..................................................................Display update rate
Input Signal (selectable)........................................................Filtered or unfiltered input signal
Actuation Modes (selectable) ...... Above or below setpoint, latching or non-latching, disabled
Output Time Delay (selectable) .................................................................... 1 to 128 readings
Front Panel Enable / Lockout Modes (selectable) ................1) Display and change setpoints
...................................................................................2) Display but do not change setpoints
..................................................................................3) Neither display nor change setpoints
Alarm Status Indication ..........................................................................2 or 4 red LED lamps
Status Indication Setup (selectable) .......................Lit when output is ON or OFF, or disabled
Form C, SPDT Relay Output:
AC Rating......................................................................................................... 8A @ 240 Vac
DC Rating........................................................................................................... 8A @ 24 Vdc
Isolation rating between signal common and contacts ............................................... 250 Vac
Insulation dielectric strength between signal common and contacts ........................................
................................................................................... 3.5 kV ac for 5 sec, 2.3 kV ac for 1 min
Form A, SPST Solid State Relay Output:
AC Rating..................................................................................................120 mA @ 140 Vac
DC Rating..................................................................................................120 mA @ 180 Vdc
Isolation rating between signal common and contacts ............................................... 250V ac
Insulation dielectric strength between signal common and contacts ........................................
................................................................................... 3.5 kV ac for 5 sec, 2.3 kV ac for 1 min
Analog Output Option

Power to Analog Output Option...................................................................Powered by meter
Output Levels ............................................................. 0-20 mA, 4-20 mA, 0-10V, -10 to +10V
Voltage Compliance, 0-20 mA Output .................................................. 12V (0-600 Ohm load)
Current Compliance, 0-10V, -10 to +10V Output.......................2 mA (5 kOhm or higher load)
57

Accuracy ..........................................Meter input accuracy ±0.02% of full scale analog output
Resolution ...........................................................................................16 bit (1 part in 65,536)
Response Time ....................................................................................... 50/60Hz update rate
Scaling of Reading for Zero Output ........................................................... -99,999 to +99,999
Scaling of Reading for Full Scale Output.................................................. -99,999 to +99,999
Isolation rating between signal common and analog output....................................... 250V ac
Insulation dielectric strength between signal common and analog output................................
................................................................................... 3.5 kV ac for 5 sec, 2.3 kV ac for 1 min
Serial Interface Option (USB, RS232, RS485, RS485-Modbus boards)

Output Types................................................................RS232, RS485, RS485-Modbus, USB
.......................................... USB-to-RS485 converter, Ethernet, Ethernet-to-RS485 converter
Power to Interface Option............................................................................Powered by meter
RS485 Wiring ............................................................................................... Half or full duplex
Baud Rates ............................................................ 300, 600, 1200, 2400, 4800, 9600, 19200
Serial Protocols ............................. Custom ASCII, Modbus RTU, Modbus ASCII (selectable)
Signal Levels ................................................. Meet RS232, RS485, USB, Ethernet standards
Isolation rating between signal common and serial I/O .............................................. 250V ac
Insulation dielectric strength between signal common and serial I/O .......................................
................................................................................... 3.5 kV ac for 5 sec, 2.3 kV ac for 1 min
Option Board Connectors:
RS232 ..................................................................................................... Single RJ11 jack
RS485 ...................................Two RJ11 jacks (for daisy chaining with 6-wire data cables)
RS485 Modbus......................Two RJ45 jacks (for daisy chaining with 8-wire data cables)
USB.......................................................................................................... USB type B plug
USB-to-RS485 converter............................USB type B plug plus RJ11 jack to RS485 bus
Ethernet.........................................................................................Single RJ45 to Ethernet
Ethernet-to-RS485 converter..............RJ45 jack to Ethernet plus RJ11 jack to RS485 bus
Environmental

Operating Temperature .........................................................................................0°C to 55°C
Storage Temperature ........................................................................................ -40°C to 85°C
Relative Humidity ...................................................... 95% from 0°C to 40°C, non-condensing
Case............................ NEMA-4X (IP65) from front when panel mounted (not verified for UL)
Shock ........................................................................... 10 G at 1 kHz, applied in X, Y, Z axes
Vibration ............................................. 15 Hz to 150 Hz, 1 mm to 2 mm amplitude, 20 G max.

- 58 -

24. GLOSSARY OF TERMS
Adaptive Filter Threshold
A threshold which causes an adaptive moving average filter to be reset to the
latest reading when the accumulated difference between individual readings
and the filtered reading exceeds that threshold. Adaptive moving average
filtering allows a meter to respond rapidly to actual changes in signal while
filtering out normal noise. The accumulated difference is also reset to zero
when the latest reading has a different polarity than the filtered reading. A low
adaptive filter threshold is normally selected. A high filter threshold should be
selected if the signal has large transients.
Alarm, Latched
An alarm which stays actuated until reset.
Latched alarms can shut down machinery or
a process when an operating limit has been
exceeded, or maintain an alarm condition
until acknowledged by an operator.
Alarm, Non-latched
An alarm which changes state automatically
when the reading rises above a specified limit
and changes back automatically when the
reading falls below a limit.
Autofilter

A selectable digital filter mode which automatically selects an appropriate moving average filter time constant from 0.08 sec to 9.6
sec for the encountered noise condition.

Auto-tare

A selectable meter operating mode, where
the first reading following power-on or meter reset is used to zero the display.
Further readings are then relative to this new zero.

Batch Average Filter
A digital filter mode which averages 16 readings and then displays the average.
Readings are taken at 60/sec with 60 Hz power and 50/sec with 50 Hz power.
Counts

The reading displayed on the panel meter ignoring the decimal point.

Custom ASCII Protocol
A simplified, short protocol for use with these panel meters. It allows 31 digital
addresses. Not an industry-standard protocol, like the more complex Modbus
protocol, which is also offered with the meters.
Deviation Band
A band in counts which controls relay action symmetrically around a setpoint.
The relay actuates when the reading falls within the deviation band, and deactuates when the reading falls outside. A limit (e.g., 50 counts) is set up
around both sides of the setpoint to create a deviation band (e.g., 100 counts).
Setting up a passband around a setpoint is often used for component testing.

- 59 -

Deviation limits are programmed by entering
menu item dEU1b for Alarm 1 and dEU2b for
Alarm 2. The deviation band equals two
limits.
Display Blank A rear panel input which blanks the display
when the input is tied to logic ground by a
switch or 0V is applied (logic level true). The
meter display will light when the input is
open or is held at +5V (logic level false).
Extended Meter
A digital panel meter with an enhanced microcomputer that provides added
capabilities, namely linearization of nonlinear inputs and display of rate of
change from successive readings.
Full Scale

The maximum input signal range for which the meter has been configured. For
example, the most sensitive full scale for the load cell meter is ±20 mV (signal
range from -20 mV to +20 mV).

Function Reset
A rear panel control input which resets Peak, Valley and any latched alarms
when the input is tied to logic ground by a switch or 0V is applied (logic level
true). To reset the value again, the input must be open or 5V applied (logic
level false) and then set low.
Ground Loop A closed conductive path in external ground wiring that allows stray currents to
flow in ground wiring, creating ground noise. The meters in this manual
minimize ground loop problems by mutually isolating the grounds associated
with meter power, signal input, and all output and communication options.
Jumper

A push-on component which provides a short between two adjacent posts on a
circuit board. Jumpers are used to configure signal conditioner boards for
specific signal types and full scale ranges, and to configure power supply and
communications boards for various modes of operation. Unused jumpers are
stored by pushing one side over an unused post.

Hysteresis, Band
A band which controls relay action symmetrically around a setpoint. The relay closes
(or opens) when the reading goes above
the setpoint plus one hysteresis limit, and
opens (or closes) when the reading falls
below the setpoint less one hysteresis limit.
A narrow hysteresis band can be used to
minimize relay chatter. A wide hysteresis
band can be used for control applications.
The hysteresis band will be equal to two
hysteresis limits.
Hysteresis, Split
Split hysteresis, where the setpoint is at the center of a symmetrical hysteresis
band, is an alternative to span hysteresis.

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Menu Mode

The meter programming mode used for input and range selection, meter setup,
and meter configuration. Entered into from the Run mode by pressing the
MENU key. The Menu mode can be locked out completely by a jumper.

Meter Hold

A rear panel input which freezes the meter display and all meter outputs while
that input is tied to logic ground by a switch or is held at 0V (logic level true).
The meter will resume operation when the input is allowed to float or is held at
+5V (logic level false).

Modbus

An industry-standard serial communications protocol which allows devices by
different manufacturers to be digitally addressed by a PC on the same communication line, with up to 247 digital addresses. More complex than the
Custom ASCII protocol, which is also supported by these meters.

Moving Average Filter
A digital filter mode which displays a weighting moving average of readings.
Readings are taken at 60/sec with 60 Hz power and 50/sec with 50 Hz power.
Display update rates remain 3.5/sec with 60 Hz power and 3.0/sec with 50 Hz
power. There are eight moving average modes:

Old average x 1/2 + new reading x 1/2 (equivalent to 0.08 sec RC time constant).
Old average x 3/4 + new reading x 1/4 (equivalent to 0.15 sec RC time constant).
Old average x 7/8 + new reading x 1/8 (equivalent to 0.3 sec RC time constant).
Old average x 15/16 + new reading x 1/16 (equivalent to 0.6 sec RC time constant).
Old average x 31/32 + new reading x 1/32 (equivalent to 1.2 sec RC time constant).
Old average x 63/64 + new reading x 1/64 (equivalent to 2.4 sec RC time constant).
Old avg. x 127/128 + new reading x 1/128 (equivalent to 4.8 sec RC time constant).
Old avg. x 255/256 + new reading x 1/256 (equivalent to 9.6 sec RC time constant).
Offset

A constant adder used for the displayed reading. This is the term b in the
straight line formula y = mx + b, where y is the displayed reading in counts, m
is the scale factor, x is the measured reading in counts, and b is the offset. For
direct readout in (milli)volts or (milli)amps, offset is 0.

Peak Display The maximum (or most positive) reading since that maximum was last reset.
Reset can be via the meter front panel, an external input, or a software
command. The displayed value can reflect the filtered or unfiltered readings.
Process Signal
A signal whose display requires setup of scale and offset settings for display in
engineering units. A classical process signal is 4-20 mA, where the 4 mA and
20 mA end points can each correspond to a desired meter reading.
Rate of Change Meter
A configuration mode of the Extended meter which allows the display of rate
based on successive readings. The conversion to engineering units is achieved
with the combination of a multiplier from 0.1 to 10,000 and a scale factor.
Reading

The value displayed by the meter. “Taking a reading” is the action of the meter
to make an analog-to-digital conversion. Readings are taken at 60/sec with 60
Hz power or 50/sec with 50 Hz power, and are displayed with an update rate of
3.5/sec with 60 Hz power or 3.0/sec with 50 Hz power.

- 61 -

Remote Display
A display mode which allows the meter to serve as a remote display to another
meter when connected to it by a 4-wire phone cord. Also allows the meter to
transmit raw measurement data to a computer and then display processed data
from the computer. A serial communications option board is required in the
meter. If such a board is not installed or no serial data is received, the meter
displays rESEt.
Reset

There are three types of Reset:
Peak and Valley Reset. Achieved by simultaneously pressing the RESET
and PEAK keys.
Latched Alarm Reset. Achieved by simultaneously pressing the RESET and
ALARMS keys.
Meter Reset. Causes the meter to reinitialize and take a tare reading when
set up for auto-tare. Achieved powering up the meter, by pressing the
RESET and MENU keys simultaneously, stepping through all top-level
menu choices, grounding a rear panel connector, or supplying an ASCII
command. rESEt is displayed briefly.

RS485 Half Duplex
Serial communications implemented with two wires, allowing data transmission
in both directions, but not simultaneously.
RS485 Full Duplex
Serial communications implemented with four wires, allowing data transmission
in two directions simultaneously.
Run Mode

The normal operating mode of the meter, where readings are taken, as
opposed to the menu mode.

Scale

A constant multiplier used to go from A/D
converter counts to displayed counts. This is
the slope term m in the straight line formula y
= mx + b, where y is the displayed reading in
counts, m is the scale factor, x is the
measured reading in counts, and b is the
offset. For direct readout in (milli)volts or
(milli)amps, scale is 1.

Scaling

The process of setting scale and offset so
that the meter reads properly in engineering
units (such as psi).

Scaling, Coordinates of 2 Points Method
A scaling method where four numbers are entered manually: low input, desired
reading at low input; high input, and desired reading at high input. The meter
then applies a straight line fit. The decimal point is set by the separate dEC.Pt
menu item.
Scaling, Scale and Offset Method
A scaling method where scale and offset are entered manually.

- 62 -

Scaling, Reading Coordinates of 2 Points Method
A scaling method, where the low and high input values are determined from
actual signals. A known low signal is first applied to the meter. That signal is
captured as the low input value, and the desired low reading is entered. A
known high signal is then applied. That signal is captured as the high input
value, and the desired high reading is entered. The meter then applies straight
line fit. This scaling method has the advantage of calibrating the transducer and
meter as a system. The actual voltage or current at either point does not need
to be known. The decimal point is set by the separate dEC.Pt menu item.
Setpoint

A value compared to the reading to determine the state of a relay. Term often
used interchangeably with “alarm setpoint.” The relay action can by latching or
non-latching, utilize a hysteresis band, or utilize a deviation band. Hysteresis
bands and deviation bands are specified by two symmetrical limits around the
setpoint.

Span

The number of counts corresponding to a given signal range.

Tare

A rear panel input which causes the display to be set to zero when the input is
momentarily tied to logic ground by a switch or is held at 0V (logic level true).
When the input is allowed to float or is held at +5V (logic level false), the meter
displays readings relative to this new zero. A common application is in
weighing, where an external Tare button is pressed to read the weight of an
empty scale (tare), and tare is then automatically subtracted as a constant from
gross weight for display of net weight. Tare can also be used for other applications where a reading relative to starting point is desired.

Valley Display

The minimum (or most negative) reading since that minimum was last reset.
Reset can be via the meter front panel, an external input, or a software
command. The displayed value can reflect the filtered or unfiltered readings.
Zero

When used with process meters, zero is an adjustment so that a given low
transducer output reads zero on the meter. Zero is adjusted by programming
offset.

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25. WARRANTY
Laurel Electronics Inc. warrants its products against defects in materials or workmanship for a
period of one year from the date of purchase.
In the event of a defect during the warranty period, the unit should be returned, freight prepaid
(and all duties and taxes) by the Buyer, to the authorized Laurel distributor where the unit was
purchased. The distributor, at its option, will repair or replace the defective unit. The unit will be
returned to the buyer with freight charges prepaid by the distributor.
LIMITATION OF WARRANTY

The foregoing warranty shall not apply to defects resulting from:
1.
2.
3.
4.

Improper or inadequate maintenance by Buyer.
Unauthorized modification or misuse.
Operation outside the environmental specifications of the product.
Mishandling or abuse.

The warranty set forth above is exclusive and no other warranty, whether written or oral, is
expressed or implied. Laurel specifically disclaims the implied warranties of merchantability
and fitness for a particular purpose.
EXCLUSIVE REMEDIES

The remedies provided herein are Buyer’s sole and exclusive remedies. In no event shall
Laurel be liable for direct, indirect, incidental or consequential damages (including loss of
profits) whether based on contract, tort, or any other legal theory.

Rev 25 June 2014
- 64 -

Page order, 64 pages, Laurel:
64,1,48,17,2,63,18,47,62,3,46,19,4,61,20,45,60,5,44,21,6,59,22,43,58,7,42,23,8,57,24,41,56,9
,40,25,10,55,26,39,54,11,38,27,12,53,28,37,52,13,36,29,14,51,30,35,50,15,34,31,16,49,32,33
Page order, 64 pages, Otek:
68,66,48,17,67,63,18,47,62,3,46,19,4,61,20,45,60,5,44,21,6,59,22,43,58,7,42,23,8,57,24,41,5
6,9,40,25,10,55,26,39,54,11,38,27,12,53,28,37,52,13,36,29,14,51,30,35,50,15,34,31,16,49,32,
33
Page order, 64 pages, Yokogawa:
71,69,48,17,70,63,18,47,62,3,46,19,4,61,20,45,60,5,44,21,6,59,22,43,58,7,42,23,8,57,24,41,5
6,9,40,25,10,55,26,39,54,11,38,27,12,53,28,37,52,13,36,29,14,51,30,35,50,15,34,31,16,49,32,
33
Page order, 64 pages, Viatran:
74,72,48,17,73,63,18,47,62,3,46,19,4,61,20,45,60,5,44,21,6,59,22,43,58,7,42,23,8,57,24,41,5
6,9,40,25,10,55,26,39,54,11,38,27,12,53,28,37,52,13,36,29,14,51,30,35,50,15,34,31,16,49,32,
33
Page order, 64 pages, Trask:
77,75,48,17,76,63,18,47,62,3,46,19,4,61,20,45,60,5,44,21,6,59,22,43,58,7,42,23,8,57,24,41,5
6,9,40,25,10,55,26,39,54,11,38,27,12,53,28,37,52,13,36,29,14,51,30,35,50,15,34,31,16,49,32,
33
Trask PDF: 75,76,3-63,77
Electro-Numerics PDF: 78,79,3-63,80
Page order, 64 pages, Electro-Numerics:
77,75,48,17,76,63,18,47,62,3,46,19,4,61,20,45,60,5,44,21,6,59,22,43,58,7,42,23,8,57,24,41,5
6,9,40,25,10,55,26,39,54,11,38,27,12,53,28,37,52,13,36,29,14,51,30,35,50,15,34,31,16,49,32,
33

- 65 -

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