Vega WEIGHTRAC 31 User manual

Operating Instructions
Radiation-based sensor for mass ow
detection
WEIGHTRAC 31
4 … 20 mA/HART - four-wire
Document ID: 42374

2
Contents
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
Contents
1 About this document
1.1 Function ........................................................................................................................... 4
1.2 Target group ..................................................................................................................... 4
1.3 Symbolism used............................................................................................................... 4
2 For your safety
2.1 Authorised personnel ....................................................................................................... 5
2.2 Appropriate use................................................................................................................ 5
2.3 Warning about incorrect use............................................................................................. 5
2.4 General safety instructions............................................................................................... 5
2.5 CE conformity................................................................................................................... 6
2.6 NAMUR recommendations .............................................................................................. 6
2.7 Environmental instructions ............................................................................................... 6
3 Product description
3.1 Conguration.................................................................................................................... 7
3.2 Principle of operation........................................................................................................ 9
3.3 Packaging, transport and storage..................................................................................... 9
3.4 Accessories and replacement parts ............................................................................... 10
3.5 Corresponding source container.................................................................................... 10
4 Mounting
4.1 General instructions ....................................................................................................... 12
4.2 Mounting instructions ..................................................................................................... 13
5 Connecting to power supply
5.1 Preparing the connection ............................................................................................... 23
5.2 Connection-Massowdetection .................................................................................. 26
5.3 Connection - Summation................................................................................................ 28
5.4 Connection - Tachometer ............................................................................................... 30
6 Adjustment with the display and adjustment module
6.1 Insert display and adjustment module............................................................................ 33
6.2 Adjustment system......................................................................................................... 34
6.3 Display and adjustment module - Indication of system parameters................................ 34
6.4 Saving the parameter adjustment data........................................................................... 37
7 Setup with PACTware
7.1 Connect the PC.............................................................................................................. 38
7.2 Parameter adjustment with PACTware............................................................................ 39
7.3 Parameteradjustment-Massowdetection.................................................................. 39
7.4 Saving the parameter adjustment data........................................................................... 54
8 Diagnostics and service
8.1 Maintenance .................................................................................................................. 55
8.2 Status messages............................................................................................................ 55
8.3 Rectify faults................................................................................................................... 59
8.4 Exchanging the electronics module................................................................................ 60
8.5 Software update ............................................................................................................. 61
8.6 How to proceed in case of repair.................................................................................... 61
9 Dismounting
9.1 Dismounting steps.......................................................................................................... 63

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Contents
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
9.2 Disposal ......................................................................................................................... 63
10 Supplement
10.1 Technical data ................................................................................................................ 64
10.2 Dimensions .................................................................................................................... 69
Safety instructions for Ex areas
PleasenotetheEx-specicsafetyinformationforinstallationandop-
eration in Ex areas.These safety instructions are part of the operating
instructions manual and come with the Ex-approved instruments.
Editing status: 2013-11-11

4
1 About this document
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
1 About this document
1.1 Function
This operating instructions manual provides all the information you
need for mounting, connection and setup as well as important instruc-
tionsformaintenanceandfaultrectication.Pleasereadthisinforma-
tion before putting the instrument into operation and keep this manual
accessible in the immediate vicinity of the device.
1.2 Target group
This operating instructions manual is directed to trained specialist
personnel.The contents of this manual should be made available to
these personnel and put into practice by them.
1.3 Symbolism used
Information, tip, note
This symbol indicates helpful additional information.
Caution: If this warning is ignored, faults or malfunctions can result.
Warning: If this warning is ignored, injury to persons and/or serious
damage to the instrument can result.
Danger: If this warning is ignored, serious injury to persons and/or
destruction of the instrument can result.
Ex applications
This symbol indicates special instructions for Ex applications.
• List
The dot set in front indicates a list with no implied sequence.
→ Action
This arrow indicates a single action.
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Battery disposal
This symbol indicates special information about the disposal of bat-
teries and accumulators.

5
2 For your safety
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
2 For your safety
2.1 Authorised personnel
All operations described in this operating instructions manual must
be carried out only by trained specialist personnel authorised by the
plant operator.
During work on and with the device the required personal protective
equipment must always be worn.
2.2 Appropriate use
WEIGHTRAC31isasensorforcontinuousmassowdetectionon
conveyor belts as well as screw or chain conveyors.
Youcannddetailedinformationontheapplicationrangeinchapter
"Product description".
Operational reliability is ensured only if the instrument is properly
usedaccordingtothespecicationsintheoperatinginstructions
manual as well as possible supplementary instructions.
2.3 Warning about incorrect use
Inappropriate or incorrect use of the instrument can give rise to
application-specichazards,e.g.vesseloverllordamagetosystem
components through incorrect mounting or adjustment.
2.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and guidelines.The instrument must only be operated in a
technicallyawlessandreliablecondition.Theoperatorisresponsible
for the trouble-free operation of the instrument.
During the entire duration of use, the user is obliged to determine the
compliance of the necessary occupational safety measures with the
current valid rules and regulations and also take note of new regula-
tions.
The safety instructions in this operating instructions manual, the na-
tional installation standards as well as the valid safety regulations and
accident prevention rules must be observed by the user.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbi-
traryconversionsormodicationsareexplicitlyforbidden.
The safety approval markings and safety tips on the device must also
be observed.
This measuring system uses gamma rays.Therefore take note of the
instructions for radiation protection in chapter "Product description".
Any work on the source container may only be carried out under the
supervisionofaqualiedradiationprotectionocer.

6
2 For your safety
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
2.5 CE conformity
ThedevicefulllsthelegalrequirementsoftheapplicableECguide-
lines.ByaxingtheCEmarking,VEGAconrmssuccessfultesting
of the product.
Only with class A instruments:
The device is a class A instrument designed for use in an industrial
environment.Whenusedinadierentenvironment,e.g.,inaliving
area, the electromagnetic compatibility must be ensured by the user.
If necessary, suitable screening measures against conducted and
emitted disturbances must be taken.
Youcanndtheconformitycerticateinthedownloadsectionunder
www.vega.com.
2.6 NAMUR recommendations
NAMUR is the automation technology user association in the process
industry in Germany. The published NAMUR recommendations are
acceptedasthestandardineldinstrumentation.
ThedevicefulllstherequirementsofthefollowingNAMURrecom-
mendations:
• NE 21 – Electromagnetic compatibility of equipment
• NE 43 – Signal level for malfunction information from measuring
transducers
• NE53–Compatibilityofelddevicesanddisplay/adjustment
components
• NE107–Self-monitoringanddiagnosisofelddevices
For further information see www.namur.de.
2.7 Environmental instructions
Protection of the environment is one of our most important duties.
That is why we have introduced an environment management system
with the goal of continuously improving company environmental pro-
tection.Theenvironmentmanagementsystemiscertiedaccording
to DIN EN ISO 14001.
Pleasehelpusfulllthisobligationbyobservingtheenvironmental
instructions in this manual:
• Chapter "Packaging, transport and storage"
• Chapter "Disposal"

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3 Product description
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
3 Product description
3.1 Conguration
Thetypelabelcontainsthemostimportantdataforidenticationand
use of the instrument:
2
1
9
10
4
5
3
6
7
8
9
Fig. 1: Layout of the type label (example)
1 Instrument type
2 Product code
3 Electronics
4 Protection rating
5 Ambient temperature
6 Measurement width
7 Hardware and software version
8 Order number
9 Serial number of the instrument
10 ID numbers, instrument documentation
The type label contains the serial number of the instrument. With it
youcanndthefollowingdataonourhomepage:
• Product code of the instrument (HTML)
• Delivery date (HTML)
• Order-specicinstrumentfeatures(HTML)
• Operating instructions at the time of shipment (PDF)
• Order-specicsensordataforanelectronicsexchange(XML)
• Testcerticatepressuretransmitters(PDF)
Go to www.vega.com, "VEGA Tools" and "Serial number search".
Asanalternative,youcanndthedataviayourSmartphone:
• Download the smartphone app "VEGA Tools" from the "Apple App
Store" or the "Google Play Store"
• Scan the Data Matrix code on the type label of the instrument or
• Enter the serial number manually in the app
This operating instructions manual applies to the following instrument
versions:
• Hardware from 1.0.5
• Software from 1.6.0
Type label
Serial number
Scope of this operating
instructions manual

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3 Product description
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
• Modicationstatus,electronicsasof-01
Theinstrumentisavailableindierentelectronicsversions.Eachver-
sioncanbeidentiedviatheproductcodeonthetypelabel:
• StandardelectronicstypePT30E-XX
The scope of delivery encompasses:
• Radiation-based sensor
• Measuring frame (optional)
• Mounting accessories
• Documentation
– this operating instructions manual
– Operating instructions manual "Display and adjustment mod-
ule" (optional)
– Ex-specic"Safety instructions" (with Ex versions)
– ifnecessary,furthercerticates
1
3
5
5
4
3
2
Fig. 2: WEIGHTRAC 31
1 Source container (e.g. SHLD-1)
2 WEIGHTRAC 31
3 Support stand
4 Crossbeam
5 Clamp collars
Note:
The appropriate source container (e.g. SHLD-1) must be ordered
separately.
Electronics versions
Scope of delivery

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3 Product description
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
3.2 Principle of operation
The instrument is suitable for bulk solid applications on conveyor belts
and screw conveyors.There are application possibilities in nearly all
areas of industry.
In radiation-based measurement, a Caesium-137 or Cobalt-60 iso-
tope emits focussed gamma rays that are attenuated when penetrat-
ingtheconveyorbeltandthemedium.ThePVTdetectoronthelower
side of the conveyor belt receives the radiation, whose strength is
proportional to the density.The measuring principle has proven to be
very reliable in conjunction with extreme process conditions because
it measures contactlessly from outside through the conveyor belt.The
measuring system ensures maximum safety, reliability and plant avail-
ability, independently of the medium and its properties.
3.3 Packaging, transport and storage
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
The packaging of standard instruments consists of environment-
friendly, recyclable cardboard. For special versions, PE foam or PE
foil is also used. Dispose of the packaging material via specialised
recycling companies.
Transport must be carried out in due consideration of the notes on the
transport packaging. Nonobservance of these instructions can cause
damage to the device.
The delivery must be checked for completeness and possible transit
damage immediately at receipt. Ascertained transit damage or con-
cealed defects must be appropriately dealt with.
Up to the time of installation, the packages must be left closed and
stored according to the orientation and storage markings on the
outside.
Unless otherwise indicated, the packages must be stored only under
the following conditions:
• Not in the open
• Dry and dust free
• Not exposed to corrosive media
• Protected against solar radiation
• Avoiding mechanical shock and vibration
• Storage and transport temperature see chapter "Supplement -
Technical data - Ambient conditions"
• Relative humidity 20 … 85 %
Application area
Functional principle
Packaging
Transport
Transport inspection
Storage
Storage and transport
temperature

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3 Product description
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
3.4 Accessories and replacement parts
The display module PLICSCOM is used for measured value indication
and diagnosis. It can be inserted into the sensor and removed at any
time.
TheinterfaceadapterVEGACONNECTenablestheconnectionof
communication-capable instruments to the USB interface of a PC. For
parameter adjustment of these instruments, the adjustment software
PACTwarewithVEGA-DTMisrequired.
Youcanndfurtherinformationintheoperatinginstructions"Interface
adapter VEGACONNECT" (Document-ID 32628).
VEGADIS61isanexternaldisplayunitforsensorswithsinglecham-
ber housing and Ex-d double chamber housing.
It is suitable for measured value indication and is connected to the
sensor with a four-wire standard cable up to 50 m long.
Youcanndfurtherinformationintheoperatinginstructions"VE-
GADIS 61" (Document-ID 27720).
TheVEGADIS62issuitableformeasuredvalueindicationofsensors.
It is looped into the 4 … 20 mA/HART signal cable.
Youcanndfurtherinformationintheoperatinginstructions"VE-
GADIS 62" (Document-ID 36469).
TheelectronicsmodulePT30E.XXisareplacementpartforradiation-
based sensors WEIGHTRAC 31.
TheelectronicsmodulecanonlybeexchangedbyVEGAservice
technician.
If you have ordered WEIGHTRAC 31 without a measuring frame, a
basic mounting set is enclosed with the instrument. It includes every-
thing needed to fasten the measuring tube reliably.
The corresponding measuring frame and mounting accessories can
be ordered optionally.
Use a tachometer for detection of the belt speed.The tachometer can
be connected to the input of the WEIGHTRAC 31.
3.5 Corresponding source container
An isotope in a suitable source container (e.g. SHLD-1) is the prereq-
uisite for a radiation-based measurement setup.
The handling of radioactive substances is regulated by law. The radia-
tion protection rules of the country in which the system is operated
applyrstandforemost.
In Germany, for example, the current radiation protection ordinance
(StrlSchV)basedontheAtomicEnergyLaw(AtG)applies.
The following points are important for measurement with radiation-
based methods:
Indicating module
VEGACONNECT
External display and
adjustment unit
External indicating unit
Electronics module
Basic mounting set
Measuring frame for
mounting
Tachometer

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3 Product description
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
A handling permit is required for operation of a system using gamma
rays.Thispermitisissuedbytherespectivegovernmentoceorthe
responsibleauthority(inGermany,forexample,ocesforenviron-
mental protection, trade supervisory boards, etc.)
Youcanndfurtherinstructionsintheoperatinginstructionsmanual
of the source container.
When handling radioactive substances, unnecessary radiation
exposure must be avoided. An unavoidable radiation exposure must
be kept as low as possible.Take note of the following three important
measures:
1 2 3
Fig. 3: Measures for protection against radioactive radiation
1 Shielding
2 Time
3 Distance
Shielding - Provide good shielding between the radioactive source
and yourself as well as all other persons. Special source containers
(SHLD-1) as well as all materials with high density (e.g. lead, iron,
concrete,etc.)provideeectiveshielding.
Time - Stay as short a time as possible in radiation exposed areas.
Distance - Your distance to the source should be as large as possi-
ble.The local dose rate of the radiation decreases in proportion to the
inverse square of the distance to the radiation source.
Theplantoperatormustappointaradiationsafetyocerwiththe
necessary expert knowledge. He is responsible that the radiation
protection ordinance is maintained and that all radiation protection
measures are implemented.
Control areas are areas in which the local dose rate exceeds a certain
value.Onlypersonswhoundergoocialdosemonitoringareallowed
intothesecontrolareas.Youcanndtherespectivelyvalidlimitvalues
for control areas in the guideline of the respective authority (in Ger-
many, for example, the radiation protection ordinance).
We are at your disposal for further information concerning radiation
protection and regulations in other countries.
Handling permit
General instructions for
radiation protection
Radiationsafetyocer
Control area

12
4 Mounting
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
4 Mounting
4.1 General instructions
The source container is part of the measuring system. In case the
source container is already equipped with an active isotope, the
source container must be locked before mounting.
Danger:
Before mounting; make sure that the source is securely closed. Use
a padlock to secure the source container in the closed condition and
prevent it from being inadvertently opened.
Protect your instrument against moisture penetration through the fol-
lowing measures:
• Use the recommended cable (see chapter "Connecting to power
supply")
• Tighten the cable gland
• Loop the connection cable downward in front of the cable gland
This applies particularly to:
• Outdoor mounting
• Installations in areas where high humidity is expected (e.g. through
cleaning processes)
• Installations on cooled or heated vessels
Make sure that all parts of the instrument exposed to the process are
suitable for the existing process conditions.
These are mainly:
• Active measuring component
• Processtting
• Process seal
Process conditions are particularly:
• Process pressure
• Process temperature
• Chemical properties of the medium
• Abrasionandmechanicalinuences
Youcanndthespecicationsoftheprocessconditionsinchapter
"Technical data" as well as on the type label.
In the case of instrument housings with self-sealing NPT threads, it is
not possible to have the cable entries screwed in at the factory.The
openings for the cable glands are therefore covered with red protec-
tive caps as transport protection.
Prior to setup you have to replace these protective caps with ap-
proved cable glands or close the openings with suitable blind plugs.
The suitable cable glands and blind plugs come with the instrument.
Switchosource
Protection against mois-
ture
Suitability for the process
conditions
Protective caps

13
4 Mounting
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
4.2 Mounting instructions
Note:
During planning, our specialists will analyse the conditions of the
measuring point to dimension the radiation source (isotope) accord-
ingly.
Yougeta"SourceSizing"documentspecifyingtherequiredsource
activity and containing all relevant mounting information for your
measuring point.
Youmustfollowtheinstructionsofthis"SourceSizing"documentin
addition to the following mounting instructions.
The following mounting information is applicable as long as there is
nothingelsespeciedinthe"SourceSizing"document.
You can position and mount WEIGHTRAC 31 in the measuring frame
from both sides.
Direct the exit angle of the source container to the WEIGHTRAC 31.
Mountthesourcecontaineratthespecieddistancetotheconveyor
belt. Secure the area with a safety fence and protective grating so that
no one can reach into the dangerous area.
Youcanndinformationonprotectivebarriersandthemounting
of the source container in the operating instructions manual of the
source container.
If you have ordered WEIGHTRAC 31 without measuring frame, a
basic mounting set is enclosed with the instrument.
Determine the mounting position of the sensor in advance.
1. Fasten the mounting bracket (6) to your conveyor belt.
You can either weld the mounting bracket (6) to your system or
fasten it with screws through the two ø9 mm (0.35 in) holes.
2. Place two clamp collars (4) onto the premounted mounting brack-
ets (6).
Installation position
Basic mounting set

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4 Mounting
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
1
2
3
4
5
4
2
6
7
Fig. 4: Mounting of the sensor with the basic mounting set
1 Screws M6 x 120 (4 pcs.)
2 Wedge lock washer M6 Nordlock (8 pcs.)
3 Cover plate (2 pcs.)
4 Clamp collar (4 pcs.) PA
5 Sensor
6 Mounting bracket
7 Nut M6 (4 pcs.)
3. Move the sensor (5) laterally beneath the conveyor belt and place
the sensor in the two clamp collars (4).
Position the measuring width of the sensor below the conveyor
belt as close as possible to the center. Make sure that there is
sucientdistancebetweensensorandconveyorbeltwhenthe
belt is loaded.
4. Place the other two clamp collars (4) according to the illustration
above the clamp collars that are already in place (4).
5. Place a metallic cover plate (3) according to the illustration on
each upper clamp collar (4).
6. Insert the screws (1), each with one wedge lock washer (2),
through the clamp collars (4).
7. Place a wedge lock washer (2) from below on each screw (1) and
screw one nut (7) onto each screw.

15
4 Mounting
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
8. Align the clamp collars (4) and tighten the nuts (7) evenly with
8 Nm (5.9 lb ft).
9. Check if the sensor (5) is fastened correctly.
- Conveyor belts
Mount the measuring frame in such a way that the measurement tube
of WEIGHTRAC 31 is below the conveyor belt (tight span).
Keep a distance of at least 10 mm (0.4 in) between the conveyor belt
and the measurement tube of WEIGHTRAC 31.
- Screw conveyors
Mount the measuring frame at a position on the spiral conveyor where
the product is transported steadily. Avoid places where the product
accumulates or falls back over the worm shaft.
- Chain conveyors
When mounting the WEIGHTRAC 31 on a chain conveyor, the instal-
lation angle is very important for optimal irradiation.
Followtheinstructionsinthe"SourceSizing"document.
Mounting of the measuring frame (optional)
The measuring frame with mounting accessories can be selected as
an option. If you have ordered WEIGHTRAC 31 with measuring frame,
then proceed as follows.
Mounting - Crossbeam
Before fastening the support stands, we recommend premounting the
measuring frame. By doing this you can easily lay out the holes for
fastening the unit to the conveyor belt.
To mount the measuring frame you need a torque wrench (45 Nm or
8Nm)andtwosocketwrenchesofsize16and10.
1. Placethecrossbeam(4)ontheupperholdingxturesofthetwo
support stands (6).
Make sure that the crossbeam (4) has an excess length of ap-
prox. 30 mm on both sides.
Measuring frame (op-
tional)

16
4 Mounting
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
1
2
3
4
2
5
6
Fig. 5: Mounting the crossbeam
1 Screws M10 x 40 (12 pcs.)
2 Wedge lock washer M10 Nordlock (24 pcs.)
3 Crossbeam (1 pce.)
4 Toe clamps (4 pcs.)
5 Nut M10 (12 pcs.)
6 Support stand (2 pcs.)
2. Place the four clamping claws (4) with the corrugation downwards
into the crossbeam (3).
3. Insert the screws (1) with one wedge lock washer (2) through the
clamping claws (4).
4. Place a wedge lock washer (2) from below on each screw (1) and
screw one nut (5) onto each screw.
5. Alignthecrossbeam(3)withtheupperholdingxturesofthe
support stands (6) and tighten the nuts (5) evenly with 45 Nm
(33.2 lb ft).
Mounting - Support stand
1. Place the premounted measuring frame above the conveyor belt
and determine a suitable position for mounting the support stands
(6).
Mount the measuring frame as well centered as possible and
at an angle of 90° above the conveyor belt. Keep enough lateral
distance to the conveyor belt.

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4 Mounting
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
2. Drill the through-holes for the support stands (6) according to the
following drilling plan.
The through-holes in the support stands (6 in each) are suitable
forscrewsofsizeM10.
The screws (14) and the washers (15) for fastening on the con-
veyor belt are not included in the scope of delivery.
120 mm
(4.72")
15 mm
(0.59")
150 mm
(5.91")
15 mm
(0.59")
270 mm
(10.63")
300 mm
(11.81")
ø 12 mm
(0.47")
Fig. 6: Drilling plan for support stands
3. Use suitable washers (15) for mounting the support stands (6).

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4 Mounting
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
14
15
Fig. 7: Mounting the support stands
14 Screw M10 (24 pcs.) - provided by the customer
15 Washer M10 (24 pcs.) - provided by the customer
4. Tighten the screws (14) evenly with 45 Nm (33.2 lb ft).
Mounting - Sensor
1. Place two of the clamp collars (11) on the fastening brackets of
the support stands (6).

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4 Mounting
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
8
9
10
11
13
11
9
12
Fig. 8: Mounting the sensor in the measuring frame
8 Screws M6 x 120 (4 pcs.)
9 Wedge lock washer M6 Nordlock (8 pcs.)
10 Cover plate (2 pcs.)
11 Clamp collar (4 pcs.)
12 Nut M6 (4 pcs.)
13 Sensor
2. Insert the sensor (13) laterally into the measuring frame beneath
the conveyor belt and place the sensor in the two clamp collars
(11).
Position the measuring width of the sensor below the conveyor
belt as close as possible to the center. Make sure that there is
sucientdistancebetweensensorandconveyorbeltwhenthe
belt is loaded.
3. Place the other two clamp collars (11) according to the illustration
above the clamp collars that are already in place (11).
4. Place a metallic cover plate (10) according to the illustration on
each upper clamp collar (11).

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4 Mounting
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
5. Insert the screws (8), each with one wedge lock washer (9),
through the clamp collars (11).
6. Place a wedge lock washer (9) from below on each screw (8) and
screw one nut (12) on each of the screws.
7. Align the clamp collars (11) and tighten the nuts (12) evenly with
8 Nm (5.9 lb ft).
8. Check if the sensor (13) is fastened correctly.
Mounting - Source container
1
7
5
2
Fig. 9: Mounting the source container on the measuring frame
1 Screws M10 x 40 (4 pcs.)
2 Wedge lock washer M10 Nordlock (8 pcs.)
5 Nut M10 (4 pcs.)
7 Source container (SHLD-1)
1. Place the closed and locked source container (7) from above onto
the measuring frame.
The source container is very heavy. Therefore use a suitable lifting
device. For this purpose the source container is equipped with a
suitable eye-bolt for a lifting hook, etc.
2. Align the source container (7) with the holes.
Make sure that the source container is placed in the correct direc-
tion on the crossbeam.
3. Insert the screws (1) with one wedge lock washer (2) through the
angeofthesourcecontainer(7).
4. Place a wedge lock washer (2) from below on each screw (1) and
screw one nut (5) onto each screw.
5. Align the source container (7) and tighten the nuts (5) evenly with
45 Nm (33.2 lb ft).