Vega VEGAPULS 11 User manual

Operating Instructions
Radar sensor for continuous level
measurement
VEGAPULS 11
Two-wire 4 … 20 mA
Document ID: 58350

2
Contents
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
Contents
1 About this document ............................................................................................................... 4
1.1 Function ........................................................................................................................... 4
1.2 Target group ..................................................................................................................... 4
1.3 Symbols used................................................................................................................... 4
2 For your safety ......................................................................................................................... 5
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 Mode of operation - Radar signal ..................................................................................... 6
2.6 Installation and operation in the USA and Canada ........................................................... 6
3 Product description ................................................................................................................. 7
3.1 Conguration.................................................................................................................... 7
3.2 Principle of operation........................................................................................................ 9
3.3 Adjustment ....................................................................................................................... 9
3.4 Packaging, transport and storage..................................................................................... 9
3.5 Accessories.................................................................................................................... 10
4 Mounting................................................................................................................................. 11
4.1 General instructions ....................................................................................................... 11
4.2 Mounting instructions ..................................................................................................... 11
4.3 Measurement setup - Flow............................................................................................. 17
5 Connecting to power supply................................................................................................. 20
5.1 Preparing the connection ............................................................................................... 20
5.2 Connecting..................................................................................................................... 21
5.3 Wiring plan ..................................................................................................................... 23
5.4 Switch-on phase............................................................................................................. 23
6 Access protection.................................................................................................................. 24
6.1 Bluetooth radio interface ................................................................................................ 24
6.2 Protection of the parameterization.................................................................................. 24
6.3 Storing the codes in myVEGA........................................................................................ 25
7 Setup with smartphone/tablet (Bluetooth).......................................................................... 26
7.1 Preparations................................................................................................................... 26
7.2 Connecting..................................................................................................................... 26
7.3 Parameter adjustment .................................................................................................... 27
8 Setup with PC/notebook (Bluetooth)................................................................................... 28
8.1 Preparations................................................................................................................... 28
8.2 Connecting..................................................................................................................... 28
8.3 Parameter adjustment .................................................................................................... 29
9 Adjustment menu................................................................................................................... 30
9.1 Menu overview ............................................................................................................... 30
9.2 Description of the applications ....................................................................................... 32
10 Diagnostics and servicing .................................................................................................... 36
10.1 Maintenance .................................................................................................................. 36
10.2 Rectify faults................................................................................................................... 36

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Contents
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
10.3 Diagnosis, fault messages ............................................................................................. 37
10.4 Status messages according to NE 107 .......................................................................... 37
10.5 Treatment of measurement errors .................................................................................. 39
10.6 Software update ............................................................................................................. 43
10.7 How to proceed if a repair is necessary.......................................................................... 44
11 Dismount................................................................................................................................. 45
11.1 Dismounting steps.......................................................................................................... 45
11.2 Disposal ......................................................................................................................... 45
12 Certicatesandapprovals.................................................................................................... 46
12.1 Radio licenses................................................................................................................ 46
12.2 Conformity...................................................................................................................... 46
12.3 NAMUR recommendations ............................................................................................ 46
12.4 Environment management system ................................................................................. 46
13 Supplement ............................................................................................................................ 47
13.1 Technical data ................................................................................................................ 47
13.2 Dimensions .................................................................................................................... 53
13.3 Industrial property rights................................................................................................. 54
13.4 Licensing information for open source software ............................................................. 54
13.5 Trademark ...................................................................................................................... 54
Safety instructions for Ex areas:
TakenoteoftheExspecicsafetyinstructionsforExapplications.
These instructions are attached as documents to each instrument
with Ex approval and are part of the operating instructions.
Editing status: 2022-10-26

4
1 About this document
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
1 About this document
1.1 Function
This instruction provides all the information you need for mounting,
connection and setup as well as important instructions for mainte-
nance,faultrectication,theexchangeofpartsandthesafetyofthe
user. Please read this information 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 personnel.
Thecontentsofthismanualmustbemadeavailabletothequalied
personnel and implemented.
1.3 Symbols used
Document ID
This symbol on the front page of this instruction refers to the Docu-
ment ID. By entering the Document ID on www.vega.com you will
reach the document download.
Information, note, tip: This symbol indicates helpful additional infor-
mation and tips for successful work.
Note: This symbol indicates notes to prevent failures, malfunctions,
damage to devices or plants.
Caution: Non-observance of the information marked with this symbol
may result in personal injury.
Warning: Non-observance of the information marked with this symbol
may result in serious or fatal personal injury.
Danger: Non-observance of the information marked with this symbol
results in serious or fatal personal injury.
Ex applications
This symbol indicates special instructions for Ex applications.
• List
The dot set in front indicates a list with no implied sequence.
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Disposal
This symbol indicates special instructions for disposal.

5
2 For your safety
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
2 For your safety
2.1 Authorised personnel
All operations described in this documentation must be carried out
onlybytrained,qualied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
VEGAPULS 11 is a sensor for continuous level measurement.
Youcannddetailedinformationabouttheareaofapplication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 this product can give rise to applica-
tion-specichazards,e.g.vesseloverllthroughincorrectmounting
or adjustment. Damage to property and persons or environmental
contamination can result. Also, the protective characteristics of the
instrument can be impaired.
2.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and directives.The instrument must only be operated in a
technicallyawlessandreliablecondition.Theoperatorisresponsi-
ble for the trouble-free operation of the instrument.When measuring
aggressive or corrosive media that can cause a dangerous situation
if the instrument malfunctions, the operator has to implement suitable
measures to make sure the instrument is functioning properly.
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.Forsafety
reasons,onlytheaccessoryspeciedbythemanufacturermustbe
used.
To avoid any danger, the safety approval markings and safety tips on
the device must also be observed.
The low transmitting power of the radar sensor is far below the inter-
nationally approved limits. No health impairments are to be expected
with intended use.The band range of the measuring frequency can
be found in chapter " Technical data".

6
2 For your safety
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
2.5 Mode of operation - Radar signal
Countryspecicsettingsfortheradarsignalsaredeterminedviathe
mode.The operating mode must be set in the operating menu via the
respective operating tool at the beginning of the setup.
Caution:
Operating the device without selecting the relevant mode constitutes
a violation of the regulations of the radio approvals of the respective
country.
2.6 Installation and operation in the USA and
Canada
This information is only valid for USA and Canada. Hence the follow-
ing text is only available in the English language.
Installations in the US shall comply with the relevant requirements of
the National Electrical Code (ANSI/NFPA 70).
Installations in Canada shall comply with the relevant requirements of
the Canadian Electrical Code.

7
3 Product description
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
3 Product description
3.1 Conguration
The scope of delivery encompasses:
• Radar sensor
• Information sheet " Documents and software" with:
– Instrument serial number
– QR code with link for direct scanning
• Information sheet " PINs and Codes" (with Bluetooth versions)
with:
– Bluetooth access code
• Information sheet " Access protection" (with Bluetooth versions)
with:
– Bluetooth access code
– Emergency Bluetooth unlock code
– Emergency device code
The further scope of delivery encompasses:
• Documentation
– Ex-specic"Safety instructions" (with Ex versions)
– Radio licenses
– Ifnecessary,furthercerticates
Information:
Optional instrument features are also described in this operating
instructions manual.The respective scope of delivery results from the
orderspecication.
This operating instructions manual applies to the following instrument
versions:
• Hardware version from 1.3.1
• Software version from 1.2.2
Scope of delivery
Scope of this operating
instructions

8
3 Product description
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
4
5
1
2
3
Fig. 1: Components of VEGAPULS 11
1 Radar antenna
2 Processtting
3 Process seal
4 Electronics housing
5 Ventilation/pressure compensation
Thetypelabelcontainsthemostimportantdataforidenticationand
use of the instrument.
0044
VEGAPULS 3. RA - 222 22N 123
s/n 12345678
12...35V 4...20mA HART
IP66/IP67, TYPE 4x
0...15m
123456
1
4
5
6
2
3
www.vega.com
D-77761 SCHILTACH,
Made in Germany
MWP 3bar (300kPa)
PVDF
L=5m
1½ NPT / 1 NPT
Fig. 2: Layout of the type label (example)
1 Instrument type
2 Field for approvals
3 Technical data
4 QR code for device documentation
5 Bluetooth access code
6 Order number
Move to " www.vega.com"andenterinthesearcheldtheserial
number of your instrument.
Thereyoucanndthefollowinginformationabouttheinstrument:
• Order data
• Documentation
• Software
Alternatively,youcanndallviayoursmartphone:
• Scan the QR-code on the type label of the device or
• Enter serial number manually in the VEGA Tools app (available
free of charge in the respective stores)
Constituent parts
Type label
Documents and software

9
3 Product description
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
3.2 Principle of operation
VEGAPULS 11 is a radar sensor for non-contact, continuous level
measurement. It is suitable for liquids and solids in practically all
industries.
The instrument emits a continuous, frequency-modulated radar signal
throughitsantenna.Theemittedsignalisreectedbythemedium
andreceivedbytheantennaasanechowithmodiedfrequency.The
frequency change is proportional to the distance and is converted into
the level.
3.3 Adjustment
Devices with integrated Bluetooth module can be adjusted wirelessly
via standard adjustment tools:
• Smartphone/tablet (iOS or Android operating system)
• PC/notebook with Bluetooth USB adapter (Windows operating
system)
13
2
Fig. 3: Wireless connection to standard operating devices with integrated
Bluetooth LE
1 Sensor
2 Smartphone/Tablet
3 Bluetooth USB adapter
4 PC/Notebook
3.4 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 consists of environment-friendly, recyclable card-
board. 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.
Application area
Functional principle
Wireless adjustment
Packaging
Transport

10
3 Product description
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
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 moisture 20 … 85 %
3.5 Accessories
Screwedangesareavailableindierentversionsaccordingtothe
following standards: DIN 2501, EN 1092-1, BS 10, ASME B 16.5,
JIS B 2210-1984, GOST 12821-80.
Welded sockets are used to connect the devices to the process.
Threaded and hygienic adapters enable simple adaptation of devices
withstandardthreadedttingstoprocess-sidehygieneconnections.
The mounting accessories are used for stable mounting of the device
at the measuring point. The parts are available in various versions and
sizes.
Transport inspection
Storage
Storage and transport
temperature
Flanges
Welded socket, threaded
and hygienic adapter
Mounting strap

11
4 Mounting
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
4 Mounting
4.1 General instructions
The instrument is suitable for standard and extended ambient condi-
tions acc. to DIN/EN/IEC/ANSI/ISA/UL/CSA 61010-1. It can be used
indoors as well as outdoors.
Note:
For safety reasons, the instrument must only be operated within the
permissibleprocessconditions.Youcannddetailedinformationon
the process conditions in chapter " Technical data" of the operating
instructions or on the type label.
Hence make sure before mounting that all parts of the instrument ex-
posed to the process are suitable for the existing process conditions.
These are mainly:
• Active measuring component
• Processtting
• Process seal
Process conditions in particular are:
• Process pressure
• Process temperature
• Chemical properties of the medium
• Abrasionandmechanicalinuences
Protect your instrument against moisture ingress through the following
measures:
• Use a suitable connection cable (see chapter " Connecting to
power supply")
• Tighten the cable gland or plug connector
• Lead the connection cable downward in front of the cable entry or
plug connector
This applies mainly to outdoor installations, in areas where high
humidity is expected (e.g. through cleaning processes) and on cooled
or heated vessels.
Note:
Make sure that during installation or maintenance no moisture or dirt
can get inside the instrument.
To maintain the housing protection, make sure that the housing lid is
closed during operation and locked, if necessary.
4.2 Mounting instructions
Radar sensors for level measurement emit electromagnetic waves.
The polarization is the direction of the electrical component of these
waves.
The polarization direction is marked on the housing, see following
drawing:
Ambient conditions
Process conditions
Protection against mois-
ture
Polarisation

12
4 Mounting
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
1
Fig. 4: Position of the polarisation
1 Marking of the polarisation
Note:
When the housing is rotated, the direction of polarization changes
andhencetheinuenceofthefalseechoonthemeasuredvalue.
Please keep this in mind when mounting or making changes later.
When mounting the device, keep a distance of at least 200 mm
(7.874 in) from the vessel wall. If the device is installed in the center
of dished or round vessel tops, multiple echoes can arise. However,
these can be suppressed by an appropriate adjustment (see chapter
" Set up").
If you cannot maintain this distance, you should carry out a false
signal suppression during setup. This applies particularly if buildup on
the vessel wall is expected. In such cases, we recommend repeating
the false signal suppression at a later date with existing buildup.
> 200 mm
(7.87
")
Fig. 5: Mounting of the radar sensor on round vessel tops
In vessels with conical bottom it can be advantageous to mount the
device in the centre of the vessel, as measurement is then possible
down to the bottom.
Installation position

13
4 Mounting
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
Fig. 6: Mounting of the radar sensor on vessels with conical bottom
The centre of the antenna lens is the beginning of the measuring
range and at the same time the reference plane for the min./max.
adjustment, see following diagram:
1
Fig. 7: Reference plane
1 Reference plane
Donotmounttheinstrumentsinorabovethellingstream.Makesure
thatyoudetectthemediumsurface,nottheinowingproduct.
Fig.8:Mountingoftheradarsensorwithinowingmedium
With threaded connection, the antenna end should protrude at least
5 mm (0.2 in) out of the nozzle.
Reference plane
Inowingmedium
Threaded socket und
socket piece

14
4 Mounting
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
ca. 5 mm
Fig. 9: Thread mounting
Ifthereectivepropertiesofthemediumaregood,youcanmount
VEGAPULS 11 on sockets longer than the antenna.The socket end
should be smooth and burr-free, if possible also rounded.
Youwillndrecommendedvaluesforsocketheightsinthefollowing
illustration or the table.The values come from typical applications.
Deviating from the proposed dimensions, also longer sockets are
possible, however the local conditions must be taken into account.
d
h
Fig. 10: Socket mounting
Socket diameter d Socket length h
40 mm 1½" ≤150mm ≤5.9in
50 mm 2" ≤200mm ≤7.9in
80 mm 3" ≤300mm ≤11.8in
100 mm 4" ≤400mm ≤15.8in
150 mm 6" ≤600mm ≤23.6in
Note:
When mounting on longer nozzles, we recommend carrying out a
false signal suppression (see chapter " Parameter adjustment").
The mounting location of the radar sensor should be a place where no
otherequipmentorxturescrossthepathoftheradarsignals.
Vessel installations, such as e.g. ladders, limit switches, heating spi-
rals, struts, etc., can cause false echoes and impair the useful echo.
Make sure when planning your measuring point that the radar sensor
has a " clear view" to the measured product.
In case of existing vessel installations, a false signal suppression
should be carried out during setup.
If large vessel installations such as struts or supports cause false
echoes, these can be attenuated through supplementary measures.
Small,inclinedsheetmetalbaesabovetheinstallations"scatter"
theradarsignalsandpreventdirectinterferingreections.
Vessel installations

15
4 Mounting
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
Fig.11:Coverat,large-areaproleswithdeectors
In liquids, direct the device as perpendicular as possible to the me-
dium surface to achieve optimum measurement results.
Fig. 12: Alignment in liquids
In order to measure as much of the vessel volume as possible, the
device should be aligned so that the radar signal reaches the lowest
level in the vessel. In a cylindrical silo with conical outlet, the sensor is
mounted anywhere from one third to one half of the vessel radius from
the outside wall (see following drawing).
r
rr...
/
13
/
12
Fig. 13: Mounting position and orientation
Alignment - Liquids
Orientation - Bulk solids

16
4 Mounting
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
Orientation
Due to respective socket design or with an alignment device, the
device can be easily aligned to the vessel centre.The necessary
angle of inclination depends on the vessel dimensions. It can be
easily checked with a suitable bubble tube or mechanic's level on the
sensor.
d
a
α
Fig. 14: Proposal for installation after orientation VEGAPULS 11
The following table shows the necessary angle of inclination. It
depends on the measuring distance and the distance "a" between
vessel centre and installation position.
Distance d (m) 2° 4° 6° 8° 10°
2 0.1 0.1 0.2 0.3 0.4
4 0.1 0.3 0.4 0.6 0.7
6 0.2 0.4 0.6 0.8 1.1
8 0.3 0.6 0.8 1.1 1.4
Example:
In a vessel 8 m high, the installation position of the sensor is 0.6 m
from the vessel centre.
The necessary angle of inclination of 4° can be read out from this
table.
If there are agitators in the vessel, a false signal suppression should
be carried out with the agitators in motion. This ensures that the
interferingreectionsfromtheagitatorsaresavedwiththebladesin
dierentpositions.
Agitators

17
4 Mounting
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
Fig. 15: Agitators
Throughtheactionoflling,stirringandotherprocessesinthevessel,
compact foams which considerably damp the emitted signals may
form on the medium surface.
Note:
If foams lead to measurement errors, you should use the biggest pos-
sible radar antennas or as an alternative, sensors with guided radar.
4.3 Measurement setup - Flow
In general, the following must be observed while mounting the device:
• Mounting the sensor on the upstream or inlet side
• Installationinthecentreoftheumeandverticaltotheliquid
surface
• DistancetotheoverfalloriceorVenturiume
• Distancetothemax.heightoftheoriceorumeforoptimum
accuracy: > 250 mm (9.843 in) 1)
• Requirementsfromapprovalsforowmeasurement,e.g.
MCERTS
Predenedcurves:
Aowmeasurementwiththesestandardcurvesisveryeasytoset
up,asnodimensionalinformationoftheumeisrequired.
• Palmer-Bowlusume(Q=kxh1.86)
• Venturi,trapezoidalweir,rectangularume(Q=kxh1.5)
• V-Notch,triangularoverfall(Q=kxh2.5)
Channel with dimensions according to ISO standard:
Whenselectingthesecurves,thedimensionsoftheumemustbe
known and entered via the assistant. As a result, the accuracy of the
owmeasurementishigherthanwiththespeciedcurves.
Foam generation
Mounting
Flume
1) The value given takes into account the block distance. At smaller distances,
the measuring accuracy is reduced, see " Technical data".

18
4 Mounting
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
• Rectangularume(ISO4359)
• Trapezoidalume(ISO4359)
• U-shapedume(ISO4359)
• Triangular overfall thin-walled (ISO 1438)
• Rectangularumethin-walled(ISO1438)
• Rectangular weir broad crown (ISO 3846)
Flow formula:
Iftheowformulaofyourumeisknown,youshouldselectthisop-
tion,astheaccuracyoftheowmeasurementishighesthere.
• Flowformula:Q=kxhexp
Manufacturerdenition:
IfyouuseaParshallumefromthemanufacturerISCO,thisoption
mustbeselected.Thisgivesyouahighaccuracyofowmeasure-
mentwitheasyconguration.
Alternatively, you can also take over Q/h table values provided by the
manufacturer here.
• ISCO-Parshall-Flume
• Q/htable(assignmentofheightwithcorrespondingowinatable)
Tip:
Detailed project planning data can be found at the channel manufac-
turers and in the technical literature.
Thefollowingexamplesserveasanoverviewforowmeasurement.
3 ... 4 hmax
90°
23
1
hmax
≥ 2 x hmax
90°
42 3
≥ 250 mm
(9.84")
≥ 250 mm
(9.84")
Fig.16:Flowmeasurementwithrectangularume:hmax.=max.llingofthe
rectangularume
1 Overfallorice(sideview)
2 Upstream water
3 Tailwater
4 Overfallorice(viewfromtailwater)
Rectangular overfall

19
4 Mounting
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
2
3 ... 4 x hmax
90°
hmax
B
1
≥ 250 mm
(9.84")
Fig.17:FlowmeasurementwithKhafagi-Venturiume:hmax.=max.llingofthe
ume;B=tightestconstrictionintheume
1 Position sensor
2 Venturiume
Khafagi-Venturiume

20
5 Connecting to power supply
VEGAPULS 11 • Two-wire 4 … 20 mA
58350-EN-221027
5 Connecting to power supply
5.1 Preparing the connection
Always keep in mind the following safety instructions:
• Carryoutelectricalconnectionbytrained,qualiedpersonnel
authorised by the plant operator
Warning:
Only connect or disconnect in de-energized state.
Thedataforpowersupplyarespeciedinchapter"Technical data".
Note:
Power the instrument via an energy-limited circuit (power max. 100 W)
acc. to IEC 61010-1, e.g.
• Class 2 power supply unit (acc. to UL1310)
• SELV power supply unit (safety extra-low voltage) with suitable
internal or external limitation of the output current
Keepinmindthefollowingadditionalfactorsthatinuencetheoperat-
ing voltage:
• Lower output voltage of the power supply unit under nominal load
(e.g. with a sensor current of 20.5 mA or 22 mA in case of fault
signal)
• Inuenceofadditionalinstrumentsinthecircuit(seeloadvaluesin
chapter " Technical data")
Use cable with round cross section for instruments with housing and
cablegland.Toensurethesealeectofthecablegland(IPprotection
rating),ndoutwhichcableouterdiameterthecableglandissuitable
for.
The instrument is connected with standard two-wire cable.
If electromagnetic interference is expected which is above the test
values of EN 61326-1 for industrial areas, shielded cable should be
used.
Note:
If the temperatures are too high, the cable insulation can be dam-
aged. Hence keep apart from the ambient temperature also the self-
heating of the instrument for the temperature resistance of the cable
in the connection compartment in mind. 1)
We recommend to connect the cable screening to ground potential at
one end on the supply side when using shielded cable.
Metric threads
In the case of instrument housings with metric thread, the cable gland
is screwed in at the factory. It is sealed with plastic plugs as transport
protection.
Safety instructions
Voltage supply
Connection cable
Cable screening and
grounding
Cable gland
2) Withanambienttemperature≥50°C(122°F)theconnectioncableshould
be suitable for a temperature which is at least 20 °C (36 °F) higher.