Lutz BE10 User manual

0698-651 Operating unit - 04/2021
en Translation of the original instructions
OPERATING UNIT
Type
BE10
BE10V
Ex-BE10B
Ex-BE10BV
Ex-BE10C
Ex-BE10CV
Please read this manual before starting up.
To be retained for future reference.

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Table of Contents
1. Concerning this manual ............................................................................................................................. 4
1.1 Terms .............................................................................................................................................. 4
1.2 Target groups .................................................................................................................................... 4
1.3 Associated applicable documents ..................................................................................................... 4
1.4 Warnings and symbols ...................................................................................................................... 5
1.5 Latest state ........................................................................................................................................ 5
1.6 Copyright........................................................................................................................................... 5
2. Modular Flow Meter System TS.................................................................................................................. 6
3. Modular Flow Meter System HDO.............................................................................................................. 7
4. Safety.......................................................................................................................................................... 8
4.1 General safety information................................................................................................................ 8
5. Proper use ............................................................................................................................................ 10
5.1 Technical data.................................................................................................................................. 11
5.2 Application in explosion hazard areas............................................................................................. 11
5.2.1 Electrical data.......................................................................................................................... 12
5.3 Safety measures when handling the battery................................................................................... 13
5.4 Safety measures when handling the touch screen ......................................................................... 14
6. Scope of supply ........................................................................................................................................ 14
7. Marking.................................................................................................................................................... 15
8. Installation ............................................................................................................................................... 16
8.1 Insert the batteries (only for operation without relay module / power supply unit) ...................... 16
8.2 Turning the operating unit / pulse converter / protection cap........................................................ 18
8.3 Separate installation of the operating unit...................................................................................... 19
8.4 Hose installation of the operating unit............................................................................................ 21
9. Operation ................................................................................................................................................. 22
9.1 Manual mode .................................................................................................................................. 24
9.1.1 Resetting the part volume meter............................................................................................ 24
9.2 Operation with volume preset......................................................................................................... 25
  9.2.1Startingthellingprocess...................................................................................................... 25
  9.2.2Stoppingthellingprocess.................................................................................................... 26
9.2.3 Changing the volume preset .................................................................................................. 27
9.3 Call up the menu level ..................................................................................................................... 28
9.4 Current settings............................................................................................................................... 31
9.5 Setting the operating mode ............................................................................................................ 33
9.6 Display options ................................................................................................................................ 34
9.6.1 Setting the display options ..................................................................................................... 35
9.7 Calibrate .......................................................................................................................................... 35
9.7.1 Calibration with a comparative measurement in manual mode ............................................ 35
9.7.2 Calibration with a comparative measurement in volume preset............................................ 36
9.7.3 Manual input of the calibration factor.................................................................................... 38
9.8 Deleting the total volume................................................................................................................ 39
9.9 Select language ............................................................................................................................... 39
9.10 Select unit of measure..................................................................................................................... 40
9.10.1 Select volume unit ................................................................................................................ 40
9.10.2 Select time unit ..................................................................................................................... 41
9.11 Change displayed decimal places..................................................................................................... 42
9.12 Change energy save mode .............................................................................................................. 43

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 9.13 LightingOn/O ............................................................................................................................... 43
 9.14 FaultdetectionOn/O/Changevalue ............................................................................................. 44
9.15 Valve function .................................................................................................................................. 45
9.15.1 On point................................................................................................................................ 45
  9.15.2Opoint................................................................................................................................ 47
 9.16 LeakagealarmOn/O..................................................................................................................... 49
 9.17 OverruncorrectionOn/O .............................................................................................................. 49
 9.18 ExternalactuationOn/O................................................................................................................ 50
9.19 LCD contrast..................................................................................................................................... 50
 9.20 SafetypromptOn/O...................................................................................................................... 51
 9.21 FlowmonitoringOn/O/Changevalue........................................................................................... 51
9.22 Communication ............................................................................................................................... 52
  9.22.1DigitalinputOn/O.............................................................................................................. 53
  9.22.2AlarmoutputOn/O............................................................................................................. 54
  9.22.3RS485-InterfaceOn/O ....................................................................................................... 54
9.22.4 Analog output ...................................................................................................................... 55
9.22.5 Pulse output.......................................................................................................................... 56
9.23 Simulation of the outputs................................................................................................................ 57
9.23.1 Simulation of relay output 1 ................................................................................................. 57
9.23.2 Simulation of relay output 2 ................................................................................................. 58
9.23.3 Simulation of alarm output................................................................................................... 58
9.23.4 Simulation of RS 485 interface.............................................................................................. 59
9.23.5 Simulation of analog output................................................................................................. 59
9.23.6 Simulation of pulse output ................................................................................................... 60
 9.24 MeasurementOn/O ...................................................................................................................... 60
9.25 Coupling the modules ..................................................................................................................... 61
9.25.1 Select relay module............................................................................................................... 62
  9.25.2Selectbasicowmetertype ................................................................................................. 62
 9.26 ProgramminglockOn/O/Changevalue........................................................................................ 63
9.27 Resetting to factory settings............................................................................................................ 64
9.28 Displaying SW version ..................................................................................................................... 64
9.29 Help function ................................................................................................................................... 65
10. Maintenance and servicing ....................................................................................................................... 66
10.1 Reset function.................................................................................................................................. 66
10.2 Changing the batteries.................................................................................................................... 66
11. Repairs...................................................................................................................................................... 68
12. Traceability ............................................................................................................................................... 68
13. Waste disposal.......................................................................................................................................... 68
Annex ......................................................................................................................................................... 69
1. Terminal assignment of cables and connectors ....................................................................................... 69
2. Trouble shooting ...................................................................................................................................... 70
2.1 Fault report...................................................................................................................................... 70
2.2 Other faults...................................................................................................................................... 72
Translation of the original declaration of conformity...................................................................................... 79

1. Concerning this manual
This manual
• is part of this product
• is valid for all mentioned series
• describes the safe and proper use in all operating stages
1.1 Terms
User: Single person or organisation who is using the products e.g. customer, user, assistant
1.2 Target groups
Target group Task
User ► Retain these operating instructions at the product’s place of use
for future reference.
► Demandthestatoreadandobservetheseinstructionsandthe
additional valid documents, in particular the safety information
and warnings.
► Observe additional regulations and instructions concerning the
plant.
Qualiedpersonnel,installer ► Read, observe and follow these instructions and the additional
valid documents, in particular the safety information and
warnings.
Tab. 1: Target groups and their tasks
1.3 Associated applicable documents
Document Purpose
Operatinginstructionsbasicowmeter Safeandproperuseofthebasicowmeter.
Operating instructions relay module Safe and proper use of the relay module.
Operating instructions communication module Safe and proper use of the communication module.
Supplementary operating instructions for additional delivered components
Tab. 2: Associated applicable documents and purpose
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1.4 Warnings and symbols
Warning Level of risk Consequences in case of non-
compliance
DANGER direct danger death or serious injury
WARNING possible direct danger death or serious injury
CAUTION possible dangerous situation Light physical injury
NOTICE possible dangerous situation damage of property
Tab. 3: Warnings and consequences in case of non-compliance
Symbol Meaning
Safety information
►Comply with all measures that are marked with a safety sign to prevent injuries or
death.
iInformation / Recommendation
►What to do
→Cross reference
3Requirement
Tab. 4: Symbols and meaning
1.5 Latest state
Pleasendthelateststateofthisoperatinginstructionunderwww.lutz-pumpen.de.
1.6 Copyright
The content of this operating instruction and the images contained in them are subject to the copyright
protection of Lutz Pumpen GmbH.
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2. Modular Flow Meter System TS
Theowmeteroperatesaccordingtothepositivedisplacementprinciple.Inahousingttedwithinletand
outletisameasuringchamberthroughwhichtheuidisforcedtoowonitswaythroughthehousing.
Inthemeasuringchamber,anutatingdiscblockstheuid`sclearpath.Asitowsthroughthemeasuring
chamber,theuidpushesthenutatingdisctooneside.Itistheactionofdisplacingtheimpedimentwhich
produces the wobble movement of the disc and circular motion of the nutating disc shaft. By means of a
driver, a magnet with several poles is set into rotation, which is able to activate a magnetically switched
contact through the lid of the housing. Every revolution of the nutating disc is assigned to a constant volume
andaxednumberofpulses,sopermittingtheelectonicevaluatingsystemtodeterminethevolumetric
owthroughthenumberofreceivedpulses.
For practically-orientated application, the ow meter system is made up of various modules:
ÀOperating unit
Electronicevaluatingunitwithtouchscreenforoperationoftheow
meter.
ÁProtection cap
Protectsthemodulesbasicowmeter,relaymoduleorpowersup-
ply unit when the operating unit is decentrally installed.
Pulse converter
Ampliesthesignalsfromthebasicowmeter.Isrequiredifthe
signals need to be transmitted further than 5 m.
ÂRelay module
Switches the external electrical appliances such as pump motor and
solenoid valve and is controlled by the evaluating electronics of the
operating unit.
Power supply unit
Supplies power to the operating unit when battery-powered opera-
tion is not desired and when no relay module is needed.
Communication module
Is the interface to other management, control or process control
systemswithdierentinputsandoutputs.
à Basic ow meter
Housing and measuring chamber with all components for volumetric
measurement which come into contact with the transported medium.
The ow meter can be used in two dierent operating modes:
Manual mode: Forllingusingamanuallyoperatednozzle.The
partvolumemeterisresettozeroandtherequired
volume is metered while the nozzle is being
operated.
Volume preset: Thepreselectedvolumeislledbypressingakey.
Volume preset is possible only when relay module
is connected.
Fig.1-Operatingunitandowmeter
Fig. 2 - Relay module and protection cap
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Fig.3-Operatingunitandowmeter
Fig. 4 - Relay module and protection cap
3. Modular Flow Meter System HDO
TheowmetersofseriesHDOareovalgearowmeters.Thishasproventobeareliableandhighlyac-
curatemethodofmeasuringow.Exceptionalrepeatabilityandhighaccuracyoverawiderangeofuid
viscositiesandowratesarefeaturesoftheHDOseriesowmeterdesign.Thelowpressuredropandhigh
pressureratingmeanstheHDOseriesowmeterissuitableforbothgravityandpump(inline)applications.
For practically-orientated application, the ow meter system is made up of various modules:
ÀOperating unit
Electronicevaluatingunitwithtouchscreenforoperationoftheow
meter.
ÁProtection cap
Protectsthemodulesbasicowmeter,relaymoduleorpowersup-
ply unit when the operating unit is decentrally installed.
Pulse converter
Ampliesthesignalsfromthebasicowmeter.Isrequiredifthe
signals need to be transmitted further than 5 m.
ÂRelay module
Switches the external electrical appliances such as pump motor and
solenoid valve and is controlled by the evaluating electronics of the
operating unit.
Power supply unit
Supplies power to the operating unit when battery-powered opera-
tion is not desired and when no relay module is needed.
Communication module
Is the interface to other management, control or process control
systemswithdierentinputsandoutputs.
à Basic ow meter
Housing and measuring chamber with all components for volu-
metric measurement which come into contact with the transported
medium.
The ow meter can be used in two dierent operating modes:
Manual mode:  Forllingusingamanuallyoperatednozzle.The
partvolumemeterisresettozeroandtherequired
volume is metered while the nozzle is being
operated.
Volume preset: Thepreselectedvolumeislledbypressingakey.
Volume preset is possible only when relay module
is connected.
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4. Safety
The manufacturer will not be held responsible for any damages resulting from non-compliance of the
overall documentation, in particular for damages in case of non-compliance of the operating instructions.
4.1 General safety information
Observe following regulations before accomplishing all activities.
Product safety
The operating unit is constructed in conformity with the state of the art and approved safety-related
standards. Danger however can occur during use for life and health of the user or third parties or
damage of the operating unit and other material assets. Therefore:
• Operate the operating unit only in a technically sound state, for its proper use, and conscious of
safety and hazards taking into account these instructions.
• Ensure that these instructions and all associated applicable documents are complete, legible, and
stored in a place that personnel can access at all times.
• Refrain from any manner of working that endangers personnel or uninvolved third parties.
• In the case of a safety-relevant malfunction, stop the operating unit immediately and enlist a
responsible person to rectify the malfunction.
• In addition to the overall documentation, observe the statutory or other safety and accident
prevention regulations, as well as the valid standards and guidelines of the respective operating
country.
Modications
Unless the manufacturer has provided its consent in writing, the manufacturer is not liable for interventions
performedbytheuser(modications)ontheproduct,suchasconversion,alteration,newdesign,etc.
Modicationsnotagreedwiththemanufacturermayhavethefollowingeects,amongothers:
• Functional impairments on the appliance or plant
• Damage to the appliance and other property damage
• Environmental damage
• Personal injuries right through to death
Duties of the operator
Safety-conscious working
• Operate the operating unit only in a technically sound state, for its proper use, and conscious of safety
and hazards taking into account these instructions.
• Ensure observance and monitoring of:
- Proper use
- Statutory or other safety and accident prevention regulations
- Safety provisions in handling hazardous substances
- Valid standards and guidelines in the respective country of operation
• Provide protective equipment.
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Personnel qualication
• Ensure that personnel tasked with work on the operating unit have read and understood these
instructions and all associated applicable documents, particularly safety, maintenance and servicing
information, before they start work.
• Clarify responsibilities, competencies and monitoring of the personnel.
• Ensurethatallworkiscarriedoutbytechnicalqualiedpersonnelonly:
- Assembly, servicing, maintenance work
- Work on the electrics
Statutory warranty
• Duringtheguaranteeperiod,obtainthemanufacturer'spermissionformodications,maintenance
work or alterations.
• Use only original parts.
Duties of the personnel
• Observe the notices on the operating unit and maintain them in a legible state.
• Use protective equipment where necessary.
• Ensure that the operating unit is disconnected before you carry out assembly and maintenance work.
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5. Proper use
The device can be used in the following environments:
- on roofed surfaces
- in roofed and closed rooms
- altitude up to 2000 m
- ambient temperature -10°C up to 60°C
- maximum relative humidity 80%
- degree of polution 2
NOTICE
Device failure due to environmental inuences!
►Theoperatingunitmustnotbemovedduringoperation.Pipes,ttings,etc.mustbesuitablysupported
sothatadditionalweightandvibrationsarenottransmittedtotheowmeter!
► Use the operating unit BE10V or Ex-BE10BV for applications in aggressive environments.
► Avoidsuddentemperatureuctuations.Ifcondensationhasoccurred,donotoperatethedeviceuntil
it is dry again.
NOTICE
The electromagnetic compatibility of the device is compatible with the emitted interference and
interference immunity for residential and industrial areas.
►Thesystemmustnotbeoperatedintheimmediatevicinityofstrongelectromagneticelds(e.g.large
motors, transformers) or interference sources that are connected to the mains (e.g. frequency convert-
ers).
►Toavoidinterferinginuenceswhensettingupadecentralisedinstallationofindividualmodules,
only use original data cables and route the data cables away from low-voltage lines, electrical ma-
chines and switching elements.
If the product and the supplied accessories are integrated into a separate system or used for purposes
other than the intended use, the user must check the suitability and permissibility at his own responsibil-
ity.Productusenotconrmedinwritingbythemanufacturerabsolvesthemanufacturerofanyliability.
The manufacturer is not liable for consequences of incorrect treatment, use, maintenance, servicing and
operation of the appliance, as well as normal wear and tear. The same applies if faults arise from interven-
tionorcongurationsonthepartoftheusernotconrmedbythemanufacturer.

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5.1 Technical data
Type BE10 BE10V Ex-BE10B Ex-BE10BV Ex-BE10C Ex-BE10CV
Display LCD-Display 63 x 63 mm, 128 x 128 Pixel
Protection class IP55
Power supply Lithium battery 3.6 V (max. 200 hours count mode)
or via relay module, power supply unit
Type of
protection
not Ex II 2G Ex ib IIB T4 Gb II 2G Ex ib IIC T4 Gb
Use in
aggressive areas
not recom-
mended
suitable not recom-
mended
suitable not recom-
mended
suitable
Electronics replaceable encapsu-
lated
replaceable encapsu-
lated
replaceable encapsu-
lated
Repairs yes no yes no yes no
Weight 300 g 350 g 300 g 350 g 300 g 350 g
Order No. 0230-000 0230-001 0230-010 0230-011 0230-020 0230-021
5.2 Application in explosion hazard areas
!DANGER
Fire and explosion hazard due to delivered liquid!
Combustion hazard.
Blast wave: Flying parts can kill you.
►FormeasuringammableliquidsaccordingtoRegulation(EC)1272/2008(CLP)useoperatingunit
Ex-BE10B or Ex-BE10BV only.
►Theentireowmetersystemmustbesuppliedwithpowerfromone module only (e.g. relay module,
power supply unit).
►Please comply with the local regulations on explosion protection.
!DANGER
Danger of explosion! Friction causes electrostatic charges!
Blast wave: Flying parts can kill you.
►Operating unit to be wiped with wet cloth only. Do not use solvents.
►Assembletheoperatingunitatleast50cmawayfromprocessesthatgeneratesignicantelectrical
charge (e.g. mechanical friction, high-voltage electrodes).
!DANGER
Danger of explosion due to inadmissible warming up!
Blast wave: Flying parts can kill you.
►Following electrical data and terminal assignment must be observed.
►The maximum permissible ambient temperature of the operating unit is: +60° C.
Whenassemblingonthebasicowmetertheliquidisnotallowedtoexceedtheambient
temperature of the operating unit.

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5.2.1 Electrical data
Internal power supply 3.6 V (DC); Approved battery type for the power supply:
• Tadiran SL-760, 3.6V, size AA
Change only outside of hazardous location.
Operating unit input Explosion protection class intrinsic safety Ex ib IIB/IIC;
(housing connector or Max. values:
internal plug strip X-1 or X-2) U0= 3.9 V
I0= 124 mA
P0= 103 mW
Characteristic curve: linear
Ci= unconsidered small
Li= unconsideredly small
Max. permissible external values
for jointly occurring external reactances:
(the table does not include any internal reactances)
L0(mH) IIB IIC
C0(μF) C0(μF)
2 26 3.8
1 32 5.1
0.5 40 6.4
or
when connecting with an active module output in explosion
protection class 'Intrinsic Safety' with module output values
Max. values:
U0= 7 V
I0= 880 mA
P0= 1.95 W
or
for connection to a power supply unit or relay module from PTB 12
ATEX 2010

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5.3 Safety measures when handling the battery
NOTICE
Lithium batteries represent a safe and reliable energy source when used properly. However, these
potential consequences may occur if they are used incorrectly or misused:
• Theleakageofbatteryuidor
• the escape of gas or, in extreme circumstances,
• areand/or
• explosion.
Do not reverse the polarity of the battery. Note the + and – symbols on the battery and device.
If batteries are inserted the wrong way they can be short-circuited or charged with the potential conse-
quences described above.
Do not short-circuit the battery.
If the positive pole (+) of a battery is connected directly to the negative pole (–), a short-circuit may occur with
the potential consequence described above. It is best to store unused batteries in their original packaging.
Do not charge batteries
Trying to charge a non-rechargeable battery may lead to it overheating with the potential consequences
described above.
Do not over-discharge batteries
If batteries are over-discharged on an external power supply, the battery voltage is dragged below the
value for which they were designed with the potential consequences described above.
Remove and dispose of depleted batteries immediately
Although lithium batteries are exceptionally leak-proof, it is more likely for a leak to occur with a depleted
battery rather than with an unused battery.
Do not overheat batteries
Electrolyte may be released if a battery overheats. Separators may also be impaired with the potential
consequences described above.
Do not open batteries
Ifabatterycellisopened,thecomponentsmaycauseaninjuryorre.
Do not damage batteries
Lithium batteries should not be crushed, drilled or damaged in any other way as this may lead to the
potential consequences described above.
Do not throw batteries into a re
Ifbatteriesarethrownintoare,thismayleadtothepotentialconsequencesdescribedabove.Only
dispose of batteries by burning them in an incinerator approved for this purpose.
Do not bring the content of lithium batteries into contact with water
This may lead to the formation of hydrogen and lead to the potential consequences described above.
Store batteries out of the reach of children
Store batteries out of reach of children, especially if they could be swallowed. Seek immediate medical
advice if a battery is swallowed.

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5.4 Safety measures when handling the touch screen
NOTICE
The display may become illegible due to pressure marks and scratches.
►Press the touch screen lightly and do not touch it with sharp objects.
!WARNING
The ow meter system may uncontrolled restart.
►Shutdowntheowmetertocleanthetouchscreen.
NOTICE
Detergents may attack the surface of the touch screen.
►Do not use solvents for cleaning.
►Clean the touch screen with a soft damp cloth.
►If necessary, use pure alcohol (observe the safety data sheet)
5.5 Prevention of obvious misapplication (examples)
• Donotconnecttheoperatingunitwithotherelectronicdevicesiftheirusabilityisnotconrmedbythe
manufacturer.
• Do not use operating units BE10 and BE10V neither in explosive hazard area nor with electric connection
in explosive hazard area.
6. Scope of supply
When unpacking the goods, check the articles that:
• there is no visible damage from transporting,
• the shipped articles, including accessories, are the articles you ordered,
• no screws have loosened during transportation.

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7. Marking
1 Type of operating unit
2 ATEX-Identication
3 Technical data
4 Serial number
5 Year of construction (last two digits of the serial number e.g. -20 for 2020)

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8. Installation
8.1 Insert the batteries (only for operation without relay module /
power supply unit)
!DANGER
When changing the batteries in explosion hazard areas danger of explosion occurs!
Blast wave: Flying parts can kill you.
► Change of battery only outside of hazardous location.
► Use only the delivered battery.
NOTICE
► After you have inserted the battery, the Lutz company logo is displayed. The operating unit now waits
untilabasicowmeterisconnected.Theoperatingdisplayappearsapprox.30secondsafterthebasic
owmeterisconnected.
 Ifittakesmorethan30secondstoconnectthebasicowmeter,thedisplayswitchesitselfo.After
you have touched the user interface, the display switches itself on again. After approx. 30 seconds,
the operating display appears.
► Use the supplied Allen key SW3 for the screws.
► Only tighten the screws hand-tight.

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Mounting steps:
1. Remove the caps and release
the screws.
2. Carefully lift the operating
unit. Pay attention to cable
length!
3. Release the plug.
4. Loosen the screw and
remove the cover of the
battery bracket.
5. Insert the new battery.
Check the correct polarity.
The Lutz company logo is
displayed.
6. Mount the cover on the bat-
tery bracket.
7. Connect the cover of the bat-
tery bracket with the screw.
8. Connect the plug.
9. Attach the operating unit
onto the module placed
below and mount the caps.
Fig. 5c - Insert the batteries
Fig. 5a - Insert the batteries Fig. 5b - Insert the batteries

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8.2 Turning the operating unit / pulse converter / protection cap
NOTICE
►Use the supplied Allen key SW3 for the screws.
►Only tighten the screws hand-tight.
The operating unit, pulse converter and protection cap can be turned
to the required position in 90°-steps.
Mounting steps for operating unit (The assembly of the pulse converter
and the protection cap must be made as follows):
Flow meter system TS (→Fig. 6a):
1. Remove the caps and release the screws.
2. Carefullylifttheoperatingunit.Payattentiontocablelength!
3. Turn the operating unit to the required position.
4. Attach the operating unit onto the module placed below and mount
the caps.
Fig. 6a - Turning the operating unit
Fig. 6b - Turning the operating unit
Flow meter system HDO (→Fig. 6b):
1. Remove the caps and release the screws.
2. Carefullylifttheoperatingunit.Payattentiontocablelength!
3. Release the plug.
4. Remove the screws.
5. Turn the intermediate plate into position.
6. Fasten the screws.
7. Connect the plug to the operating unit circuit board.
8. Secure the operating unit in the desired position on the intermedi-
ate plate and mount the caps.

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8.3 Separate installation of the operating unit
Duetothemodularconstructionoftheowmetersystem,itispossibletoinstalltheoperatingunitwith
orwithoutrelaymoduleseparatelytothebasicowmeteritself.Aprotectioncaporapulseconverter,an
intermediate plate and a data line are required in addition.
NOTICE
►Use the supplied Allen key SW3 for the screws.
►Only tighten the screws hand-tight.
►Use a pulse converter instead of a protection cap if the data line
is longer than 5 m.
Mounting steps:
1. Remove the caps and release the screws.
2. Carefullylifttheoperatingunit.Payattentiontocablelength!
3. Release the plug.
4. Removethelateralsealingcoversincludingtheangenuts.
5. Remove the screws.
6. Insert screws suitable for the base (max. 5 mm thread diameter,
not included in the scope of supply).
7. Mounttheintermediateplateonarmandlevelbase.
8. Insertthelateralsealingcoversincludingtheangenuts.Make
surethattherearetwodierentversions.
9. Attach the operating unit onto the intermediate plate and mount
the caps.
Fig. 7b - Separate installation of the
operating unit
Fig. 7a - Separate installation of the
operating unit

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10.Connect the plug with the circuit board of the pulse converter
(or with the ribbon cable of the protection cap).
11.Attachthepulseconverter/protectioncapontotheowmeter
and mount the caps.
12.Connect the operating unit and pulse converter / protection cap
using the data line.
Fig. 7c - Separate installation of the
operating unit
Fig. 7d - Separate installation of the
operating unit