KROHNE 702 Level Radar User Manual BM702 MBA e

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© KROHNE 07/00
7.02230.31.00
Installation and operating instructions
Level-Radar
BM 702
Variable area flowmeters
Vortex flowmeters
Flow controllers
Electromagnetic flowmeters
Ultrasonic flowmeters
Mass flowmeters
Level measuring instruments
Communications technology
Engineering systems & solutions
Software History
Introduction
Signal converter
Mth./Yr Hardware
Firmware
Hardware
04/00
7.00PREnn
PC
BM 702
User program
Operating
system
DOS 5.0
and higher
Software
PC-CAT
3.02
PRE01
Instructions
Device
User
program
05/00
7.02221.11+
Suppl.
instruction
Win95/98/NT PC-CAT
Online help
Win 4.00
Test versions for BM 702.
07/00
BM 702
7.00
PC
DOS 5.0
and higher
PC-CAT
3.01
Win95/98/NT PC-CAT
07/00
7.02221.11+
Suppl.
instruction
Online help
Win 4.00
First series version for BM 702.
Items included with supply
The scope of supply includes, in the version as ordered:
•
Signal converter bolted to waveguide window and antenna; optionally: antenna
extension, sunshade (with fastening material in each case)
•
Shielding material with tightening strap (not for the US market)
•
Installation and operating instructions plus instruction card
•
Report on factory settings for the signal converter
•
Certification and approval documents, unless reproduced in the device documentation
Installation material (stud bolts, flange gasket and cabling) not supplied, to be provided by
customer!
Installation and operating instructions BM 702 (07/00)
Contents
Handling and storage.................................................................................. 3
Installation.................................................................................................... 4
2.1
Field assembly ..................................................................................................4
2.2
Mechanical installation .....................................................................................5
Electrical connection ................................................................................... 7
Setting the parameters............................................................................... 8
Maintenance, error handling ....................................................................18
Safety information.....................................................................................19
Technical data (extract) ............................................................................20
BM 702 Level-Radar Type code ...............................................................22
Parameter check list .................................................................................24
Product liability and warranty:
The BM 702 level gauge is designed solely for measuring the level, distance, volume and
reflection of liquids, pastes, slurries, particulate materials and solids.
The BM 702 level gauge does not form part of an overfill protection system as defined in
the WHG (= German water pollution regulation).
Local codes and regulations apply to its use in hazardous areas.
Responsibility as to suitability and intended use of these level gauges rests solely with the
user.
Improper installation and operation of our level gauges may lead to loss of warranty.
In addition, the "General conditions of sale", form the basis of the purchasing contract.
If you need to return the level gauge to the manufacturer or supplier, please refer to the
information given in Section 5
Handling and storage
Safety advice
Depending on the version, the device will weigh between approx. 5 kg and 30 kg. To carry,
use both hands to lift the device carefully by the converter housing. If necessary, use lifting
gear.
When handling the BM 702, avoid hard blows, jolts, impact, etc.
When storing the "Wave-Stick" version, make sure that the device is not placed on its side
on the PTFE antenna, as this may cause the rod to bend.
Installation and operating instructions BM 702 (07/00)
2
Installation
Most of the BM 702 versions are supplied in fully assembled condition. In this case, you
may skip this chapter. However, if a device should be delivered in parts, or parts are
subsequently replaced, the following should be noted.
2.1
•
•
Field assembly
For any necessary field assembly of the
BM 702, all parts are included with the
supply (stud bolts, washers, etc.).
Bolt the waveguide window (flange mount)
or distance piece, if supplied loose, to the
BM 702. Torque for the sets of 4 Allen
screws M (key size 5 mm): max. 8 Nm ∼
0.8 kpm (5.8 ft lbf).
•
Note: Ensure the upper Teflon plug is kept
absolutely dry and clean! Moisture and dirt
will impair functionability of the BM 702!
•
Bolt antenna extension to the antenna;
torque for the 3 stud bolts A: max. 8 Nm ∼
0,8 kpm (5.8 ft lbf).
signal converter
O-ring
distance piece (for
high-temperature version
up to 250°C (482 °F)
BM70 A
connecting flange
antenna extension
upper Teflon plug
O-ring
lower Teflon plug
antenna
Do not detach bolts H !
Version:
BM 702
converter
High temperature
distance piece
(optional)
Stick
Flange
plate Stick
Wave-Stick
PTFE
Gasket
Wave-Stick
w/o plate
(PP or PTFE)
max. 2 bar
Horn
antenna
Gasket
Horn
antenna
Separation
(Metaglass)
Flange
plating
(for Hastelloy,
Ti, Ta)
LP flange system Flange system 96
max. 2 bar
with horn antenna
with horn antenna
Installation and operating instructions BM 702 (07/00)
2.2
Mechanical installation
Hazardous-duty systems:
•
The BM 702 Ex is certified in conformity with European Standard for use in Zone 0, 1
and 2 hazardous locations (dependent on version).
•
Attention is drawn to the data and information given on the nameplate of the
converter, the nameplate of the flange and the specifications in the approval
certificates.
Safety:
•
Check material compatibility of antenna, extension, flange, gaskets, and PP or PTFE
(used in all versions) with the product! See also section 8 "Type code"!
Mounting on the tank nozzle
a) Devices with horn antenna:
The antenna should project out of the nozzle. If necessary, use an antenna extension.
Exception: in case of a symmetrical tank fitting.
Tank nozzle
Tank nozzle
Antenna
extension
Tank nozzle
b) Wave-Stick
Note the requirements imposed on nozzle diameter and nozzle length:
Version for
still wells
Tank nozzle
min. 50 mm
min. 200 mm
dia. 40...55 mm
e.g. DN50
Installation and operating instructions BM 702 (07/00)
c) Purging device
Remove screw plug ¼" R and screw in
screwed tube joint, e.g. Ermeto ¼" R.
Consult “Ex“ specifications relating to the
purging circuit (provided by customer)!
Installation on the tank
•
•
•
Do not forget the gasket when
positioning the BM 702 on the tank
nozzle flange. Align BM 702 and gasket,
slightly tighten nuts on stud bolts (by
hand).
Press shielding strip C* in the gap
between tank and BM 702 flanges and
secure with strap retainer S* (both
items included with supply).
Strap retainer S* must fit closely and
overlap both flanges.
* only required for European radio approvals
•
Tighten down stud bolt nuts firmly. The
tightening torque is dependent upon
the strength properties of the stud
bolts and the pressure rating of the
tank
C* = shielding strip B = BM 702 flange
S* = strap retainer F = tank flange
Positioning on the tank
>1/7×H, but max. 1/3×D
Recommended distance
from the tank wall
Do not position in
tank centerline!
(multiple reflections!)
Do not position
above internals!
(interference reflections!)
A Stilling well or Wave-Guide may be mounted in any position on the tank!
Installation and operating instructions BM 702 (07/00)
When using the PTFE Wave-Stick in hazardous areas of Zone 0, any electrostatic charging of
the stick, e.g. by flow of product, must be avoided!
Electrical connection
To open the signal converter, please use a screwdriver and release the four visible screws
on top of the blue housing.
Terminal assignment
BM 702:
The polarity of the 4-20 mA connection
is arbitrary.
4-20mA
currentloop
FE
cable gland
Equipotential bonding
When used in hazardous areas, the BM 702 Ex can be incorporated in the PA
equipotential bonding system, e.g. by using the separate U-clamp terminal at the “neck“
of the BM 702 Ex.
Rated temperature of connecting cables: see Section 6.
Supply voltage at the terminals (1,2)
The 4-20 mA supply must be able to provide the following voltage U at the terminals of the
BM 702 – dependent on the current I. Please consider also the line resistance and possible
loads on the secondary side of the supply unit.
17V
16V
15V
14V
13V
3.6mA
22mA
4mA
8mA
12mA
16mA
20mA
The allowed upper limit R for load+line resistance is depending on the specification of the
supply unit:
U @20mA (supply unit)
14 V
15 V
16 V
17 V
18 V
Max. resistance R
50 Ω
100 Ω
150 Ω
200 Ω
250 Ω
Installation and operating instructions BM 702 (07/00)
4
Setting the parameters
Setting parameters via program PC-CAT
isolation
amplifier
RS232
Adapter
≥ 120 Ω
With the program PC-CAT, version 3.01 or higher, you can configurate BM 702 instruments
in a very comfortable way from a PC. Connect the non-intrinsically safe side of the isolation
amplifier over a load between 120 Ω and 350 Ω to the Smart adapter (delivered together
with PC-CAT) and connect it with a serial port of the PC.
The used isolation amplifier must be HART® compatible.
Local display (optional)
BM702
Füll.
1 9.500
2 m
3 m_ _ _ _ _
(1) Numeric display, measured values
(2) Alphanumeric display, function/unit
(3) 6 Markers to display measurement
status
(4) 4 keys for configuration and error
interrogation
Installation and operating instructions BM 702 (07/00)
Function of keys (only together with local display)
Operator control can be carried out with the aid of local display unit after opening the
housing. However, a particularly convenient form of parameter setting is offered by the PC
program PC-CAT (special accessories, see above).
→ (cursor key)
- selects the configuration menu,
- branches the menu to the next lower level,
- shifts the cursor* to the next column on the right.
↑ resp. ↓ (select key)
- branches the menu to the next digit on the same
level,
- changes the content (digit, text character) at the
cursor* position.
↵ (ENTER key)
- branches the menu to the next higher level,
- stores newly entered parameters,
- executes displayed functions,
- selects special functions (e.g. error memory,
see Sect. 5).
* The cursor position is signalled by flashing of the character at the appropriate place.
Meaning of status markers (only for version with local display)
The 6 markers ? x below the local display only show information about the status of
measurement and are no error displays!
? 1:
? 2:
? 3:
? 4:
? 5:
? 6:
No current measured value: The device is searching for a new value. If the
search for a plausible level fails for a certain time, "SIGNAL DOWN" appears as
error display.
Signal too strong: Mean of reflected microwaves is very high. Gain is automatically stepped down.
Poor spectrum: Brief showing of this marker has no significance. If permanently
on, this may result in uncertain (incorrect) measured values or the error message
"NO M.VALUE".
No measured value as yet: Evaluable measured values not available after the
device has been started up. Measured value automatically set to the level of the
tank bottom. This marker disappears when the first valid measured value is
obtained.
Tank bottom: In tanks with dished bottom, for example, the measuring signal can
"disappear" if measurements are carried out near the bottom. The measured value
is then automatically set to the level of the tank bottom.
Measurement frozen: Device is in the block distance detection (see below).
Installation and operating instructions BM 702 (07/00)
Simply scaling the current output
1) Drain the tank completely to the 0% marking (= 4 mA) 1).
0%
2) Press the lower keys (↵ und ↓) down, until the
asterisks on the display „TANKHEIGHT|********“ are
replaced by the actual measured distance value 2).
TANKHEIGHT
1234 mm
↵
3) Then release and press ↵. In the lower line: „SURE
NO?“ is displayed.
4) If this value is not plausible or the tank is not empty,
abort by ↵. Or accept the value by pressing ↑ (“SURE
YES?”) and then ↵.
TANKHEIGHT
1234 mm
SURE NO?
2.
TANKHEIGHT
1234 mm
SURE YES?
1.
SCALE 4mA
5) Now the tank height is set.
↵
6) In the next step you can also enter this value as 4 mA
scaling (0%). Press ↵. In the lower line now: „SURE NO?“
is displayed again.
7) If this value shall not be stored, abort by ↵. Or accept
this 4mA scaling by pressing ↑ (“SURE YES?”) and then ↵.
8) Fill the tank to the 100% mark. Use the same procedure
for the 100% point = 20 mA only now by pressing the top
keys → and ↑ 1) 2).
0 mm
SCALE 4mA
0 mm
SURE NO?
2.
SCALE 4MA
0 mm
SURE YES?
BLOCKDIST.
↵
567 mm
9) First the measured distance can be taken as block
distance. After this you can enter or adjust the 20 mA point
(100%) according to the actual level.
10
1.
100%
1)
This example was written for the case: current output = level (default). For distance measurement the
points 0% (short distance = high level) and 100% (large distance = low level) are exchanged
2)
If no reliable measurement is possible „NO ACCESS“ is displayed. Abort by pressing ↵
Installation and operating instructions BM 702 (07/00)
Description of functions
The table on the following 3 pages provides an overview of all parameters that can be set in
the configuration menu.
This is followed by more precise explanations of some functions and a typical configuration.
Configuration menu (version 7.00)
Function (Fct.)
Input range
1.0
1.1
1.1.1
1.1.2
1.1.3
2.0
2.1
2.1.1
2.1.2
2.1.3
2.2
2.2.1
OPERATION
DISPLAY
FCT.DISP
UNIT.LENGTH
UNIT.CONV.
TEST
HARDWARE
MASTER
DISPLAY
STATUS
CUR.OUTP.I
VALUE I
2.2.2
TEST I
2.4
2.4.1
FIRMWARE
MASTER
Display
3.0
3.1
3.1.1
INSTALL.
BASIS.PARAM
TANKHEIGHT
Select unit
3.1.2
BLOCKDIST
3.1.3
ANTENNA
3.1.4
ANT.EXTENS.
3.1.5
DIST.PIECE
3.1.6
STILLWELL
11
Description
identical with 3.2.1
identical with 3.2.2
identical with 3.2.3
Master hardware test.
Display hardware test.
Status information for Service
Value display
Display of actual value of the
current output.
Select 3.6 mA/4 mA/6 mA/...
Output of selected value to
... 20 mA/22 mA the current output. With
safety query.
Display of master firmware
version.
m/cm/mm/
Enter tank height (see
inch/Ft explanatory notes).
Enter
The unit entered here is also
0.50 ... 20.00 [m] used for all other length
entries.
Enter
Enter block distance = non0.10 [m] ... tank height measurable range below
bottom edge of flange (see
explanatory notes).
Select
STANDARD
Select antenna type. WAVEWAVE-STICK STICK for all Wave-Stick
versions, except type "SW"
for stillwells.
All other = STANDARD.
Enter 0.00 [m] ... tank height
Enter length of antenna
extension (not for WaveStick: set to= 0)
Enter
0 ... 2000 [mm]
Enter length of distance
piece above flange (high
temp. version = 120 mm).
Select
NO / YES Selection: without or with
If “YES“: enter 25 ... 200 [mm] still well.
With still well: enter inside
diameter in [mm]
Installation and operating instructions BM 702 (07/00)
Function (Fct.)
Input range
Description
(compensates different
wave speeds in still wells)
Enter -10.00...0...+10.00 [m] Reference offset is added
to measured distance
values.
Enter-100.00...0...+100.00 [m] Tank bottom offset is added
to measured level values.
3.1.7
REF.OFFSET
3.1.8
TB.OFFSET
3.2
3.2.1
DISPLAY
FCT.DISP
3.2.2
UNIT.LENGTH
3.2.3
UNIT.CONV.
3.2.4
USER UNIT
Text entry
3.2.5
ERROR MSG.
Select
3.3
3.3.1
SIGNAL OUT
FUNCTION I
3.3.2
RANGE I
3.3.3
SCALE 4mA
Enter -200.00 ... +200.00 [m]
0.00 ... 99999.99 [m3]
3.3.4
SCALE 20mA
Enter -200.00 ... +200.00 [m]
0.00 ... 99999.99 [m3]
3.3.5
BAUDRATE
Select
1200 Bd
3.3.6
ADDRESS
Enter
0 ... 255
3.3.7
PROTOCOL
Select
3.4
3.4.1
USER DATA
LANGUAGE
Select
3.4.2
ENTRY CODE 1
Select
LEVEL
DISTANCE
CONVERSION
Select
m/cm/mm/
inch/Ft/
PERCENT/BARGRAPH
Select
m3/l(Liter)/US Gal/
GB Gal/Ft3/bbl/PERCENT/
BARGRAPH/USER UNIT
Select
Select function of display
(value to be displayed).
See also explanatory notes.
Select unit for length value
to be displayed (only for
level and distance).
Select unit for conversion
value to be displayed
(“volume table“).
(see explanatory notes)
Enter user-defined unit for
10 characters the conversion table.
NO/YES Select whether error
messages to be shown in
display.
Select OFF/LEVEL/DISTANCE/
CONVERSION/SW.OUTP.
Select
4-20mA
4-20mA/E3.6
4-20mA/E22
HART/KROHNE-PC
12
Select function of the
current output.
Select range/error status
for the current output (hold
last value or 3.6 mA/22mA
in error status)
Enter lower measuring
range value for the current
output (4 mA).
(see explanatory notes)
Enter full-scale range value
for the current output (20
mA).
(see explanatory notes)
Baud rate for HART®
communication (do not
change!).
Enter device address.
(for HART® multidrop)
Select communications
protocol
GB-USA/D/F/I/E/P/S Select language for the
optional display.
NO/YES Switch the access lockout
on/off.
Installation and operating instructions BM 702 (07/00)
Function (Fct.)
Input range
Description
If YES, for every access a 9digit entry code on the 4
keys is necessary.
Enter code
(RRREEEUUU) Enter the entry code for
access lockout.
Enter text (8 characters)
Enter a device identifier.
3.4.3
CODE 1
3.4.4
3.5
3.5.1
LOCATION
APPLICAT.
AUTO TANKH.
3.5.2
EMPTY.SPEC.
Select
3.5.3
TIMECONST.
Value
3.5.4
TRACING.VEL.
Value
0.01...0.50...10.00 [m/Min]
3.5.5
MULT.REFL.
Select
NO/YES
3.5.6
BD-DETECT.
Select
NO/YES
3.5.7
FUNCT. FTB
Select
OFF/
PARTIAL
3.5.8
EPSILON R
Enter
3.5.9
TANKTYPE
Select
Special function
OFF/ON/
RECORD
1...10...100 [s]
1.1000 ... 8.0000
STORAGE T./
PROC TANK
Automatic determination of
tank height
(see explanatory notes).
Recording the profile of the
empty tank (empty-tank
spectrum) (see explanatory
notes).
Enter time constant for
measured-value filtering
Enter the maximum rate of
change in level that can
occur in operation.
Switch the multi-reflection
identifier on/off.
Switch the block distance
(overfill) identifier on/off
(see explanatory notes).
Select function of tank
bottom tracing system (see
explanatory notes).
Enter relative permittivity of
product (only for Fct. 3.5.7)
Select tank type.
STORAGE T. = smooth
product surface
PROC TANK = slightly
disturbed product surface
The default settings are marked in the table bold.
13
Installation and operating instructions BM 702 (07/00)
Explanatory notes
Tank height
The tank height (Fct. 3.1.1) for the BM 702 is defined as the distance between the top
edge of the tank connecting flange and the bottom reference point. The bottom reference
point is that “point“ in the tank on which the microwaves of the BM 702 hit and from which
they are reflected. This may be the tank bottom (symmetrical tank with flat bottom) or the
non-horizontal part of the bottom (e.g. tank with dished bottom) or an additionally fitted
plate. The BM 702 cannot measure below this point (“sump“ in the tank).
Note: When the tank is completely empty and the tank bottom provides good reflections
(flat, not dished bottom!), the tank height can also be automatically determined with the
aid of Function Fct. 3.5.1 AUTO TANKH. Before confirming, check carefully that the
proposed tank height is plausible!
Block distance
The “block distance“ function (Fct. 3.1.2) defines a zone below the top reference point in
which measurements are not meant to take place. The value should be at least 10 - 20 cm
greater than the length of antenna+antenna extension, or at least 20 cm in the case of the
Wave-Stick.
Signals within the block distance are suppressed; a rise in the tank filling above this limit
(response threshold) will lead to a measuring result corresponding to a distance = block
distance, when Fct. 3.5.6 BD-DETECT. is switched on.
Scaling of the current output
The scaling of the current output (Fct. 3.3.3: level 1 = 4 mA ; Fct. 3.3.4: level 2 = 20 mA)
should if possible lie within the measuring range (between bottom reference point and
response threshold).
By pressing the two upper keys (→ and ↑) or the two lower keys (↵ and ↓) at the same
time, the 0% setting (= 4 mA) or 100% setting (= 20 mA) can be programmed according to
the actual level (see page 9).
14
Installation and operating instructions BM 702 (07/00)
[e.g.: 0]
upper reference point
(top edge of tank connecting flange)
Fct. 3.1.5
Fct. 3.1.4
[e.g.: 0]
block distance (Fct. 3.1.2)
[e.g.: 0.6 m]
response
threshold
tank height
(Fct. 3.1.1)
[e.g.: 5.30 m]
non
measurable
zone
max
20
m A (Fct. 3.3.4)
[e.g.: 4.0 m]
measuring
current output
range
min
m A (Fct. 3.3.3)
[e.g.: 0.4 m]
Sump
lower reference point
(tank bottom / datum point)
Empty-tank spectrum
To enable the BM 702 to identify and blank out interference signals, e.g. caused by fixed
and moving tank internals, the tank profile (empty-tank spectrum) needs to be recorded
once only prior to (initial) start-up. For recording, the tank should be completely empty and
all moving parts (e.g. agitators) switched on. If major interference through internals is not
expected, recording of the empty-tank spectrum can also be dispensed with, since the
factory has already carried out and stored a partial empty spectrum of the flange system.
Empty-tank spectrum recording via display
After selecting menu item Fct. 3.5.2, press key →. The display then shows whether the
empty spectrum is currently ON or OFF. Then press the ↵ key if no change is to be made, or
use the ↑ key to choose between the following options:
• ON: the empty-tank spectrum is (again) switched on and taken into account for
measurements.
• OFF: the empty-tank spectrum is not taken into account for measurements, but
remains stored in the BM 702 and can be switched on again at a later date.
• RECORD: the existing empty-tank spectrum is to be deleted and a new one
recorded.
15
Installation and operating instructions BM 702 (07/00)
After selecting "RECORD": if other parameters had previously been changed, the query
"ACCEPT YES" is first made as to whether they are to be stored. In this case, confirm by
pressing ↵. To record, use the ↑ key to select one of the following options:
•
MAX. VALUES: (only maximum values are taken into account when the empty-tank
spectrum is recorded; useful e.g. with “difficult“ agitators).
• AVERAGE: (values are averaged; this setting can be used for most applications).
After selecting with the ↑ key, press the ↵ key to select TOTAL or the ↑ key to select
PARTIAL.
• When TOTAL is selected, the empty-tank spectrum is recorded over the entire range
(tank height).
•
If the tank has not been fully drained, the empty-tank spectrum can also be
recorded up to a certain distance, in which case the menu item PARTIAL should be
selected. When this has been selected, a query takes place by way of the ↵ key
concerning the distance value up to which the empty-tank spectrum is to be
recorded. The tank area below the current filling level is then excluded from the
empty-tank recording. It is recommended to maintain a safety distance of 20 to 30
cm from the actual product distance.
Subsequently press key ↵ to start recording the empty-tank spectrum. The display starts
with “200“ and counts down to “0“. The sign WAIT... is shown in the display. READY
appears after approx. 1-3 minutes. Then press key ↵ five times to store the recorded
empty-tank spectrum, which is taken into account for measurements.
Empty-tank spectrum recording via PC-CAT
Connect the BM 702 and press in the display mode of PC-CAT the key combination Ctrl-L.
The type of empty-tank spectrum can be selected by one of the following keys:
1: Max.Values
4: Max. Partial
A: Break
2: Average
5: Avg. Partial
Tank bottom tracing mode (FTB)
The BM 702 includes an additional function for measuring reliably low levels in tanks with
flat bottom and poorly reflecting products (low dielectric constant). This tank bottom tracing
system (abbreviated FTB) is activated in the vicinity of the tank bottom (max. 20% level).
Given higher levels, the normal measuring method is used (reflection from the pro duct
surface).
If the measurement jumps to the correct level only after filling above a certain level (approx.
0.3-1.0 m), you can activate the FTB function Fct. 3.5.7 „PARTIAL“. The relative permittivity
ε of the tank product must be set in Fct. 3.5.8. If it is not known, enter the figure of 2.0.
Since the exact position of the tank bottom must be known for this process, it is advisable
when using the FTB to determine the tank height automatically with an empty tank, using
Fct. 3.5.1.
Conversion table/Volume table
A table consisting of a maximum of 50 points can be stored in the BM 702 for non-linear or
linear conversion of the level, e.g. into a volumetric value. This table, however, can only be
programmed with the PC-CAT program (Fct. 3.7.2).
16
Installation and operating instructions BM 702 (07/00)
Sequence for setting parameters (example) (for version with local display)
The following description refers to a storage tank with the parameter examples taken from
the illustration in this Section. If the device no longer contains the default parameters, the
keystroke combination for entering the numerical values may differ.
Entry into configuration menu
Keys to be
actuated
→
Setting the parameter: tank height
↑↑→→
Activity
Display of default value
Input of tank height "5.30 m"
Confirm tank height and move to block
distance
Display default value
→
→↓ → 5x↑ →
3x↑
↵↑
Content of BM 702
display after activity
Fct. 1.0
OPERATION
Fct. 3.1.1
TANKHEIGHT
10.000 m
05.300 m
→
Fct. 3.1.2
BLOCKDIST
0.5000 m
→↑
0.6000 m
↵↵ ↑↑
→
Fct. 3.3
SIGNAL OUT
Fct. 3.3.3
SCALE 4 mA
+ 00.000 m
3x → 4x↑
+ 00.400 m
↵ ↑
→
Fct. 3.3.4
SCALE 20mA
010.00 m
Enter full-scale value (4.0 m = 20 mA)
2x→ ↓ → 4x↑
004.00 m
Confirm full-scale value and move to empty
tank spectrum
Select: re-record empty spectrum
↵↵↑↑→↑
→ ↑↑
Fct. 3.5.2
EMPTY.SPEC.
RECORD
↵
ACCEPT. YES
Confirm and select: averaging
↵ ↑
AVERAGE
Confirm and start recording; then wait for
approx. 1-3 minutes!
Confirm and move to tank type
↵↵
READY
↵ 7x↑
Enter block distance "0.60 m"
Confirm block distance and move to current
output configuration
Move to lower range value
Display default value
Enter lower range value (0.4 m = 4 mA)
Confirm lower range value and move to fullscale range value
Display of default value
Store changed parameters
→↑↑
Display of default value
→
Fct. 3.5.9
TANK TYPE
PROC TANK
Select tank type "storage tank"
↑↑
STORAGE T.
Return to measurement function with
confirmation of changed parameters
5x↵
PARAM.CHECK,
then START,
then meas.val. display
17
Installation and operating instructions BM 702 (07/00)
5
Maintenance, error handling
Replacement of the signal converter
Before commencing, note the parameters of the BM 702 and switch off the power supply!
1. Disconnect all cables from the terminals in the terminal compartment.
2. Remove the 4 Allen screws M (Allen key size 5 mm) and lift off the signal converter.
The flange unit (incl. waveguide window) will remain tight even with pressurized tanks.
Caution
On pressurized tanks, do not on any account remove the 4 screws H connecting the
waveguide window to the BM 702 flange! DANGER!
3. Fit the new BM 702 converter.
4. Reconnect all cables in the terminal
compartment, as described in Section
3.
5. Check against the enclosed report on
settings whether the factory-set
parameters are correct for your
application. If not, reset.
6. Record the empty spectrum,
see Section 4.
Important: Make sure that the screw thread
of the covers on the terminal and electronic
compartments is well greased at all times.
signal converter
O-ring
distance piece
(for hightemperature
version up to 250°C (482°F)
BM70
connecting flange
Returning a BM 702
The party returning a device is obligated to check and ensure that all cavities in the device
are free from dangerous substances (toxic, caustic, flammable, water-endangering), and
that a certificate is enclosed with the device confirming that it is safe to handle.
Error display during measurement (only for versions with local display)
When function 3.2.5 "ERROR. MSG." is set to YES, any error occurring during measurement
is indicated in the display and alternates with the measured value for as long as the error is
present.
In addition, all errors are stored. Press the keystroke combination ↵ ↑ → → to get into
the error list. You can page through the list with key → , and acknowledge the errors at the
end - if required - by "QUIT YES". Press key ↵ twice to return to the measuring mode.
Fatal errors (FATAL ERROR), that are detected when the device is started up, render
operation of the BM 702 impossible.
18
Installation and operating instructions BM 702 (07/00)
6
Safety information
Hazardous-duty systems
•
•
Types of protection in the BM 702 terminal compartment:
Intrinsically safe"ia"
Consult the relevant wiring and installation regulations, e.g. VDE 0165, before
mounting, dismantling or making electrical connections in a hazardous area
Temperature rating of connecting cables:
The temperature rating of connecting cables is dependent on the maximum temperature of
the flange:
Version
Without high temperature
distance piece
With high temperature
distance piece
19
Max. flange
temperature
≤ 100°C (212°F)
> 100°C (212°F)
≤ 200°C (212°F)
> 200°C (212°F)
Cable temperature
rating
70°C (158°F)
80°C (176°F)
70°C (158°F)
80°C (176°F)
Installation and operating instructions BM 702 (07/00)
7
Technical data (extract)
Tank height (measuring range)
Measuring accuracy (distance)
Measured-value resolution
Rate of change in level
0.5 to 20 m / 1.6 to 65.6 ft
from 1m/3ft: + 1cm/0.4” ; from 5m/16ft: + 0.2%
1 mm / 0.04”
max. 10 m/min / 32.8 ft/min (tracking speed)
Connecting flanges
Horn antenna/Wave-Guide
DIN 2501 DN 50 to DN 200 / PN 6 to PN 64 and
higher;
Shape C to DIN 2526 or others
ANSI B16.5 2” to 8",
Class 150 lb or 300 lb, RF
DN 50...150 or ANSI 2”...6”, dairy DIN 11851
DN 50/65/80, Tri-Clamp 2/3/4”,
SMS 51/63/76 mm, G 1½"
Wave-Stick
Max. allowable operating pressure
-1 bar (vacuum) to max. 64 bar / 928 psig,
depending on version and flange pressure rating.
(see name plate)
LP flange system with horn antenna, Wave-Guide or Wave-Stick without flange plate
-1 bar (vacuum) to +2 bar /29 psig
V96 flange system with horn antenna or Wave-Guide:
Connection:
nominal dia.
Flange rated pressure
PN 16
PN 25
PN 40
PN 64
DN
80
inches
bar
16
psig
232
bar
---
psig
---
bar
40
psig
580
bar
64
psig
928
100
16
232
---
---
38
551
55
797
150
16
232
---
---
34
493
47
681
200
16
232
25
362
32
464
45
652
Wave-Stick: max. 16 bar / 232 psig, temperature-dependent:
[psig] [bar]
+232 +16
46 - 0.3·T[°C] bar
745 - 2.42·T[°F] psig
pressure
+14
+1
-14
-1
-20
20
temperature T
+100
+150
+212
+302°F
Installation and operating instructions BM 702 (07/00)
Operating temperature at flange
(see also chapter 8)
Product temperature
Ambient temperature
Microwaves
Measuring principle
Frequency range
Antenna radiation angle
LP flange system: -20°C (-4°F) to +130°C (302°F)
V96 flange system:
Basic version: -30°C (-22°F) to +130°C (266°F)
Special version: min. -60°C (-76°F)
High temperature version, FFKM:
max. +250°C (482°F)
Kalrez 2035: max. +210°C (410°F)
FPM (Viton) or FEP-coated: max. +200°C (392°F)
PTFE-Wave-Stick: -20°C (-4°F) to +150°C (302°F),
pressure dependent
PP-Wave-Stick: -20°C (-4°F)to +100°C (212°F)
Unrestricted, provided ambient temperature and flange
temperature are within the specified limits
Signal converter (Tamb): -40°C (-4°F) to +55°C (131°F)
FMCW Radar
X-Band 8.5 - 9.9 GHz
Type 3: ± 8° Type 4: ± 6°
Wave-Stick: ± 9°
Ex-i current output HART® (passive)
Current
Accuracy and linearity
clamp voltage
4 - 20 mA; without or with error message 3.6 mA
or 22 mA
0.15 %; TC=100 ppm/K
> 17V (I = 4 mA); > 13V (I = 20 mA)
Digital communication
HART®
Ambient conditions
Environment class
Protection category (converter)
Electrical connection
Cable entries:
Terminals:
Locations exposed direct to open-air climate,
D1 Severity in conformity with EN 60654-1
IP66 / IP67 (equivalent to NEMA 4 and 4X)
1 x M 20×1.5
(delivered with 1 cable gland M 20 mm or
QUICKON® 2-pole cutter clamp)
Cable cross-section 0.5-1.5 mm² (AWG 20-16)
U-clamp terminals (for PA and FE) cable cross-section max. 4 mm² (AWG 12)
21
Installation and operating instructions BM 702 (07/00)
8
BM 702 Level-Radar Type code
Series V96 or LP:
Series WS:
Terminal cover
Terminal cover
Name plate
Flange system
Name plate
Flange system
High temperature distance piece
(optional)
xxx
xxx
Marking
Flange material
Marking
Flange material
xxx
Marking
Material "Metaglass" ring
(not for LP version)
optional: flange plate
(Vers. LPTFE/PTFE)
Stick
(LPTFE/PTFE/PP)
Flange plating
(for Hastelloy, Ti, Ta)
optional: antenna
(LP horn antenna)
Marking
Flange plating
(for Hastelloy)
Marking of the signal converter (see name plate):
BM 702
non-Ex version for non-hazardous areas
BM 702i / EEx
Ex version for hazardous areas,
terminal compartment in Increased Safety „ia“
Marking of the Flange systems (see name plate on flange):
..(1).. ....(2)......
non-Ex version for non-hazardous areas
..(1).. ....(2)...... – E Ex ..(3).. Ex version for hazardous areas
(1)
V96
WS
EA
LP
(2)
SS
HB
HC
Ti
Ta
Mo
22
Series
Flange system V96
(with „Metaglass“ as versions with horn antenna or Wave-Guide)
Wave-Stick
(plastics rod antenna or short stick for still wells)
Enamel antenna
LP version
(with horn antenna or Wave-Guide)
Materials of the parts in contact with the product
- Series V96:
» Antennas and flanges:
Flange and antenna of stainless steel
used material: see marking on flange
Flange plating and antenna of Hastelloy B (e.g. B2)
used material: see marking on plating
Flange plating and antenna of Hastelloy C (e.g. C4 or C22)
used material: see marking on plating
Flange plating and antenna of Titanium
Flange plating and antenna of Tantalum
Flange plating and antenna of Monel
» gasket material:
Installation and operating instructions BM 702 (07/00)
FFKM
K2035
K1091
FPM
FEP
Gaskets of FFKM, e.g. Kalrez™ 4079 or Parofluor™ V8545-75
Gaskets of Kalrez™ 2035
Gaskets of Kalrez™ 1091
Gaskets of FPM, e.g. Viton™
Gaskets FEP-coated (FPM core)
SS PP
- Series WS
Stick and flange plate of conductive PTFE
Stick and flange plate of PTFE
stainless steel PTFE, gasket of FFKM
also for version „LP horn antenna“
stainless steel PP, gasket of FPM (Viton™)
EM PTFE
- Series EA
Antenna of enamel, sealing of PTFE
LPTFE
PTFE
SS PTFE
(3)
1G
2G
Application conditions, equipment group II
(explosive atmosphere by gases, vapours, mists)
equipment category 1, application in Zone 0
(versions V96, EA, or Wave-Stick LPTFE or PTFE with Metaglass)
equipment category 2, application in Zone 1
(Wave-Stick PP or PTFE without Metaglass, or LP flange system)
(free) Without Ex approval (e.g. LP version)
Limits of temperature at flange:
Version
Minimum flange temperature
(1)+(2) of the
type code
Standard
version
V96 ... FFKM
V96 ... K2035
V96 ... FPM
V96 ... FEP
WS LPTFE
WS PTFE
WS SS PTFE
WS SS PP
LP
23
-30°C (-22°F)
-30°C (-22°F)
-30°C (-22°F)
-30°C (-22°F)
-40°C (-40°F)
-40°C (-40°F)
-20°C (-4°F)
-20°C (-4°F)
-20°C (-4°F)
Maximum flange temperature
Special version
Without high
with marking
temperature
„2.4610“ at the distance piece
Metaglass ring
-60°C (-76°F) +130°C (+266°F)
-60°C (-76°F) +130°C (+266°F)
-60°C (-76°F) +130°C (+266°F)
-60°C (-76°F) +130°C (+266°F)
–––
+130°C (+266°F)
–––
+130°C (+266°F)
–––
+130°C (+266°F)
–––
+100°C (+212°F)
–––
+130°C (+266°F)
With high
temperature
distance piece
+250°C (+482°F)
+210°C (+410°F)
+200°C (+392°F)
+200°C (+392°F)
+150°C (+302°F)
+150°C (+302°F)
+150°C (+302°F)
+100°C (+212°F)
–––
Installation and operating instructions BM 702 (07/00)
9
Parameter check list
BM 702 ..................................Vers.:......................device no..................................
24
Menu
modified at .......................................: .................: .................: .................:
Fct.
Configuration parameters (extract)
3.1.1
Tank height.......................................: .................: .................: .................:
3.1.2
Block distance ..................................: .................: .................: .................:
3.1.3
Antenna............................................: .................: .................: .................:
3.1.4
Antenna extension.............................: .................: .................: .................:
3.1.5
Distance piece ..................................: .................: .................: .................:
3.1.6
Stillwell / diameter ............................: .................: .................: .................:
3.1.7
Reference offset ................................: .................: .................: .................:
3.1.8
Tank bottom......................................: .................: .................: .................:
3.3.1
Current output, function offset............: .................: .................: .................:
3.3.2
Current output range/error.................: .................: .................: .................:
3.3.3
Min. current scale..............................: .................: .................: .................:
3.5.2
Empty spectrum................................: .................: .................: .................:
3.5.3
Time constant...................................: .................: .................: .................:
3.5.4
Tracking speed ..................................: .................: .................: .................:
3.5.5
Multiple reflections (yes/no)..............: .................: .................: .................:
3.5.6
Block distance ident (yes/no)............: .................: .................: .................:
3.5.7
Function FTB .....................................: .................: .................: .................:
3.5.8
Epsilon R..........................................: .................: .................: .................:
3.5.9
Tank type..........................................: .................: .................: .................:
Installation and operating instructions BM 702 (07/00)

---

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