Vega PLICSMOBILE T81 User manual

Operating Instructions
External radio unit for HART sensors
PLICSMOBILE T81/B81/S81
External GSM/GPRS/UMTS radio unit
Optionally with battery/accumulator/solar
panel
Document ID: 55234

2
Contents
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
Contents
1 About this document
1.1 Function ........................................................................................................................... 4
1.2 Target group ..................................................................................................................... 4
1.3 Symbols 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 Safety label on the instrument .......................................................................................... 5
2.6 EU conformity................................................................................................................... 6
2.7 Radio license for Europe .................................................................................................. 6
2.8 Radio license for USA ...................................................................................................... 6
2.9 Radio license for Canada ................................................................................................. 7
2.10 Environmental instructions ............................................................................................... 7
3 Product description
3.1 Conguration.................................................................................................................... 8
3.2 Principle of operation........................................................................................................ 9
3.3 Adjustment ....................................................................................................................... 9
3.4 Packaging, transport and storage..................................................................................... 9
4 Mounting
4.1 General instructions ....................................................................................................... 11
4.2 Installation procedure..................................................................................................... 11
5 Connecting to power supply
5.1 Preparing the connection ............................................................................................... 14
5.2 Connection options ........................................................................................................ 14
5.3 Connection steps sensor connection cable.................................................................... 15
5.4 Connection steps voltage supply.................................................................................... 15
5.5 Wiring plan ..................................................................................................................... 17
6 Battery operation and power saving mode
6.1 Battery/accumulator operation ....................................................................................... 19
6.2 External battery PLICSMOBILE B81 .............................................................................. 19
6.3 Solar panel PLICSMOBILE S81 ..................................................................................... 20
6.4 Battery sizing.................................................................................................................. 22
6.5 Power options................................................................................................................. 23
7 Setup
7.1 Adjustment system......................................................................................................... 25
7.2 Communication via Bluetooth......................................................................................... 25
7.3 Parameter adjustment with PC and PACTware ............................................................... 26
7.4 Mobile network and SIM card......................................................................................... 27
7.5 Internet connection and measured value transmission................................................... 29
8 Maintenanceandfaultrectication
8.1 Maintenance .................................................................................................................. 32
8.2 Rectify faults................................................................................................................... 32
8.3 How to proceed if a repair is necessary.......................................................................... 33

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Contents
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
9 Dismount
9.1 Dismounting steps.......................................................................................................... 34
9.2 Disposal ......................................................................................................................... 34
10 Supplement
10.1 Technical data ................................................................................................................ 35
10.2 Dimensions .................................................................................................................... 39
10.3 Industrial property rights................................................................................................. 41
10.4 Hash function acc. to mbed TLS..................................................................................... 41
10.5 Trademark ...................................................................................................................... 41
Supplementary documentation
Information:
Supplementary documents appropriate to the ordered version come
withthedelivery.Youcanndthemlistedinchapter"Product descrip-
tion".
Editing status: 2017-01-31

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1 About this document
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
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 Symbols 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.
SIL applications
This symbol indicates instructions for functional safety which must be
taken into account particularly for safety-relevant 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.

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2 For your safety
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
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
The PLICSMOBILE T81 is an external mobile network unit for trans-
mission of measured values and for remote parameter adjustment of
plics®sensors.
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.
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.
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.
2.5 Safety label on the instrument
The safety approval markings and safety tips on the device must be
observed.

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2 For your safety
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
2.6 EU conformity
ThedevicefullsthelegalrequirementsoftheapplicableEUguide-
lines.ByaxingtheCEmarking,weconrmsuccessfultestingofthe
product.
YoucanndtheEUconformitydeclarationonourwebsiteunder
www.vega.com/downloads.
2.7 Radio license for Europe
The instrument was tested according to the latest issues of the har-
monized standards:
• EN 300328
• EN 301511
• EN 301908-1
• EN 301908-2
• EN 300440
It is hence approved for use inside closed vessels in countries of the
EU and EFTA.
2.8 Radio license for USA
This approval is only valid for USA. Hence the following text is only
available in the English language:
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions:
• This device may not cause interference, and
• This device must accept any interference, including interference
that may cause undesired operation of the device
Changesormodicationsnotexpresslyapprovedbythemanufac-
turer could void the user’s authority to operate this equipment.
This device is approved for unrestricted use only inside closed, sta-
tionaryvesselsmadeofmetal,reinforcedberglassorconcrete.
This equipment complies with FCC radiation exposure limits set forth
for an uncontrolled environment.This equipment should be installed
and operated with minimum distance of 20 cm cm between the radia-
tor and your body. This transmitter must not be co-located or operat-
ing in conjunction with any other antenna or transmitter.
This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation.This equipment
generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television
reception,whichcanbedeterminedbyturningtheequipmentoand
on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna

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2 For your safety
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
• Increase the separation between the equipment and receiver
• Connecttheequipmentintoanoutletonacircuitdierentfrom
that to which the receiver is connected
• Consult the dealer or an experienced radio/TV technician for help
2.9 Radio license for Canada
This approval is only valid for Canada. Hence the following texts are
only available in the English/French language:
This device complies with Industry Canada's license-exempt RSS
standard(s). Operation is subject to the following conditions:
• This device may not cause interference, and
• This device must accept any interference, including interference
that may cause undesired operation of the device
This equipment complies with IC radiation exposure limits set forth for
an uncontrolled environment.This equipment should be installed and
operated with minimum distance of 20 cm cm between the radiator
and your body. This transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter.
Le présent appareil est conforme aux CNR d’Industrie Canada ap-
plicables aux appareils radio exempts de licence. L’exploitation est
autorisée aux conditions suivantes:
• L’appareil ne doit pas produire de brouillage; et
• L’utilisateur de l’appareil doit accepter tout brouillage radioélect-
rique subi, même si le brouillage est susceptible d’en compromet-
tre le fonctionnement.
Cet équipement est conforme aux limites d'exposition aux rayonne-
ments IC établies pour un environnement non contrôlé. Cet équipe-
ment doit être installé et utilisé avec un minimum de 20 cm cm de
distance entre la source de rayonnement et votre corps. Ce transmet-
teur ne doit pas être place au même endroit ou utilise simultanément
avec un autre transmetteur ou antenne.
2.10 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lthisobligationbyobservingtheenvironmental
instructions in this manual:
• Chapter"Packaging, transport and storage"
• Chapter"Disposal"

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3 Product description
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
3 Product description
3.1 Conguration
The scope of delivery encompasses:
• PLICSMOBILE T81
• Sensor connection cable (optional)
• Documentation
– This operating instructions manual
– Ifnecessary,furthercerticates
The PLICSMOBILE T81 consists of the components:
2
5
3
4
1
Fig. 1: PLICSMOBILE T81
1 Electronics compartment
2 Plug connector for connection of the sensor
3 Antenna
4 Mounting plate
5 Sensor connection cable
Thetypelabelcontainsthemostimportantdataforidenticationand
use of the instrument:
• Instrument type
• Product code
• Approvals
• Technical data
• Serial number of the instrument
• Data matrix code for smartphone app
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)
Goto"www.vega.com","VEGA Tools"and"Instrument search".Enter
the serial number.
Alternatively, you can access 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
Scope of delivery
Constituent parts
Type label
Serial number

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3 Product description
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
• Enter the serial number manually in the app
3.2 Principle of operation
The PLICSMOBILE T81 is a mobile network unit for transmission
of measured values and for remote parameter adjustment of plics®
sensors. Due to the large operating voltage range and the integrated
power saving functions, a mains-independent power supply via bat-
tery or accumulator/solar cells is possible. Typical applications are
measured value transmission from mobile vessels, battery-operated
level measurement and deep well measurement.
The measured value and message transmission can be optionally
carried out via e-mail or SMS. Furthermore, the measured values can
betransmittedviahttpsforvisualisationin"VEGA Inventory System".
The use of PLICSMOBILE T81 is particularly suitable for inventory
management, VMI (Vendor Managed Inventory) and remote enquiry.
The external mobile network unit PLICSMOBILE T81 can be con-
nected to any 4 … 20 mA HART two-wire sensor of the plics®series.
In HART Multidrop operation up to 15 sensors can be connected to a
PLICSMOBILET81(max.vewithExversion).
The transmission of measured values, event messages and diagnos-
tic information to the user is carried out via the GSM/GPRS network.
Thanks to quadband technology, the device can be used virtually
anywhere in the world.There is also the option of accessing the con-
nected sensor via remote parameter adjustment.
Power is supplied via a standard low voltage source (external power
supply unit/battery/accumulator/solar panel) or via the optionally
availablePLICSMOBILEB81.Youcannddetailedspecicationson
thepowersupplyinchapter"Technical data".
The PLICSMOBILE T81 normally supplies power to the connected
sensors.
3.3 Adjustment
The device is adjusted via PACTware and the corresponding DTM.
The connection is made via the Bluetooth module integrated in
PLICSMOBILE T81.
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 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.
Application area
Functional principle
Voltage supply
Packaging
Transport

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3 Product description
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
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 %
Transport inspection
Storage
Storage and transport
temperature

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4 Mounting
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
4 Mounting
4.1 General instructions
In the standard version, the PLICSMOBILE T81 is designed for
wall mounting. Mounting adapters for carrier rail mounting (top hat
rail 35 x 7.5 according to DIN EN 50022/60715) as well as for tube
mounting are optionally available.
Checkbeforemountingifasucientnetworkcoverage(signal
strength) of the mobile network provider is available at the planned
location.This can be simply tested by means of a mobile phone.
Keep in mind that the SIM cards in the PLICSMOBILE T81 and in the
mobile phone are from the same mobile phone provider or work in the
same mobile phone network. If the radio reception is too weak, you
should search for a better position. In closed rooms this would be, for
example, close to a window or at least closer to an outer wall.
Note:
During operation, a distance of at least 20 cm should be kept between
the antenna and persons working nearby. Operation of the instrument
with smaller distances is not recommended.
Usetherecommendedcables(seechapter"Connecting to power
supply")andtightenthecablegland.
You can give your instrument additional protection against moisture
penetration by leading the connection cable downward in front of the
cableentry.Rainandcondensationwatercanthusdraino.Thisap-
plies mainly to outdoor mounting as well as installation in areas where
high humidity is expected (e.g. through cleaning processes) or on
cooled or heated vessels.
4.2 Installation procedure
The PLICSMOBILE T81 for wall mounting is supplied with a mounting
base for screw mounting.
→ Fasten the instrument with four appropriate screws (not included
in the delivery) according to the following illustration.
Mounting options
Installation position
Moisture
Wall mounting

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4 Mounting
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
62 mm (2.44")
12 mm
(0.47")
7 mm (0.28")
85 mm (3.35")
Fig. 2: PLICSMOBILE T81 for wall mounting, bottom view of mounting plate.
The PLICSMOBILE T81 for top hat rail mounting is supplied with an
already assembled adapter for fastening on a 35 x 7.5 carrier rail.
→ Snap the instrument without tools onto the top hat rail. Loosening
from the top hat rail is also carried out without tools.Through the
integrated spring, you just have to apply slight lateral pressure to
the instrument.
1 2
Fig. 3: PLICSMOBILE T81 for carrier rail mounting
1 Adapter plate
2 Carrier rail
The PLICSMOBILE T81 for tube mounting is supplied with a measur-
ing instrument holder and four hexagon socket screws M5 x 12 as
unassembled mounting accessory.
→ Mount the measuring instrument holder according to the following
illustration to the socket of PLICSMOBILE T81. Then you can
fasten the instrument with the bent strap to your tube.
Carrier rail mounting
Tube mounting

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4 Mounting
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
1 2
3
Fig. 4: PLICSMOBILE T81 for tube mounting
1 4 screws M5 x 12
2 Measuring instrument holder
3 Tube

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5 Connecting to power supply
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
5 Connecting to power supply
5.1 Preparing the connection
Always keep in mind the following safety instructions:
• Connect only in the complete absence of line voltage
• If overvoltage surges are expected, overvoltage arresters should
be installed
Power can be supplied optionally via PLICSMOBILE B81 or a sepa-
rate power supply unit.
When using a power supply unit, the secondary circuit must be
separated from the primary circuit by double or reinforced insulation
(according to the nationally valid safety standards).
The air and creeping distances in PLICSMOBILE T81 meet the
requirements of EN IEC61010-1 for secondary circuits with reinforced
insulation under overvoltage category III (altitude up to 2000 m).
The voltage supply of PLICSMOBILE T81 is connected with standard
cable according to the national installation standards.
The sensor connection cable included in the delivery is used to con-
nect the sensor.
Connect the cable screen on the sensor side to ground potential.
In the sensor, the screen must be connected directly to the internal
ground terminal.The ground terminal on the outside of the sensor
housing must be connected to the potential equalisation (low imped-
ance).
Note:
WhenconnectingmorethanoneHARTsensor,adierentaddress
must be assigned to each sensor (address range 1-15). Address 0
(mode 4 … 20 mA) may not be used.When assigning an address,
only one sensor should be connected to PLICSMOBILE T81. If con-
nectionisalreadycompleted,thewiringmustbebrieyundonefor
addressing. Depending on the installation location of the sensors, it
can be advantageous to carry out this addressing before installing
and connecting the sensors.This can be conveniently carried out
e.g. in the workshop.You only need a 24 Volt power supply as well as
an indicating and adjustment module PLICSCOM or the adjustment
software PACTware with VEGACONNECT.
5.2 Connection options
Power can be supplied to the sensor and PLICSMOBILE in two ways:
With this version, only one voltage supply is required for both devices.
The voltage supply is connected to the PLICSMOBILE T81. In
addition to the measured value, the sensor connection cable also
carries the voltage supply of the sensor via HART. Hence there is
no 4 … 20 mA HART signal from the sensor electronics available for
processing, e.g. via a PLC.That's why the measured value transmis-
Note safety instructions
Select power supply
Select connection cable
Cable screening and
grounding
Common voltage sup-
ply for sensor and
PLICSMOBILE

15
5 Connecting to power supply
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
sion can only be carried out via radio transmission through e-mail/
SMS/VEGA Inventory System.
With this version, the sensor and the PLICSMOBILE T81 are each
powered via a separate power supply. Here, the measured values can
be transmitted via radio communication and the 4 … 20 mA HART
signal is available in parallel for processing, e.g. via a PLC.
HART communication
If the internal resistance of the connected power supply for the sensor
islessthan230Ω,theHARTsignalisextremelydampedorshort-
circuited. Digital communication with PLICSCOM is then no longer
possible.With low impedance processing systems, a resistance of
approx.230Ωmustbeloopedintothe4…20mAcable.Thisresist-
ance is already integrated in PLICSMOBILE T81 and can be looped
automatically into the circuit by selecting the appropriate wires (see
wiring plan).
The connection to power supply is carried out as described in the
respective operating instructions manual.
5.3 Connection steps sensor connection cable
The sensor connection cable is used for transmission of the meas-
ured value from the sensor to the PLICSMOBILE T81. In addition, it
can also transmit the voltage supply for the connected sensor.
The sensor connection cable is available in Ex version (blue)
as well as in non-Ex version (black). It can be ordered in three
lengths (5/10/25 m) and can be shortened afterwards to individual
lengths. On one end there is a ready-for-use plug for connection to
PLICSMOBILE T81. On the other end are free cable ends for direct
connection to the sensor.
To connect, proceed as follows:
1. Connect the colour coded wire ends to the respective sensor
terminals, as described in the wiring plan and the operating
instructions of the sensor.
2. Isolate unused wires, depending on connection type and cable
version
3. Connect the screen to the internal ground terminal, connect the
outer ground terminal on the housing to potential equalisation
4. Tighten the compression nut of the cable entry gland. The seal
ring must completely encircle the cable
5. Insert the plug of the sensor connection cable into the plug con-
nection on PLICSMOBILE T81
6. Tighten plug connection
5.4 Connection steps voltage supply
The connection of the voltage supply is made via spring-loaded termi-
nals in the electronics compartment. A small screwdriver is required
toopentheterminals.Solidaswellasexiblecoreswithoutcableend
sleeves can be used.
Separate voltage sup-
ply for sensor and
PLICSMOBILE
Connection technology

16
5 Connecting to power supply
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
Proceed as follows:
1. Unscrew the housing lid
2. Loosen compression nut of the cable gland and remove blind
plug
3. Remove approx. 10 cm (4 in) of the cable mantle, strip approx.
1 cm (0.4 in) of insulation from the ends of the individual wires
4. Insert the cable into the cable gland through the cable entry
Fig. 5: Connection steps 4 and 5
5. Lift the opening levers of the terminals with a screwdriver
6. Insert the wire ends into the open terminals according to the wir-
ing plan
7. Press down the opening levers of the terminals, you will hear the
terminal spring closing
8. Check the hold of the wires in the terminals by lightly pulling on
them
9. Connect the screen to the internal ground terminal, connect the
external ground terminal to potential equalisation
10. Tighten the compression nut of the cable entry gland. The seal
ring must completely encircle the cable
11. Screw the housing lid back on
Theelectricalconnectionisnished.
Connection procedure

17
5 Connecting to power supply
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
5.5 Wiring plan
1
PLICSMOBILE
4 5
2
6
3
5
12
+
-
678
4...20mA
SIM
Status
Send Off On
123
+-
Fig. 6: Connection of the voltage supply in the electronics housing
1 Power supply PLICSMOBILE and sensor
2 Sensor connection cable
3 HART sensor from the plics®series
4 Brown cable (+) for sensor power supply/HART communication
5 Blue cable (-) for sensor power supply/HART communication
6 Unused wires that must be insulated (not present on Ex version)
Note:
If multiple sensors are connected, they are connected in parallel.The
sensorsshouldrstbesettoHARTMultidropmode
1
PLICSMOBILE
45
2
7
63
5
12
+
+
-
-
678
4...20mA
SIM
Status
Send Off On
123
+
-
Fig. 7: Connection of the voltage supply in the electronics housing
1 Power supply PLICSMOBILE
2 Sensor connection cable
3 HART sensor from the plics®series
4 Brown cable (+) for HART communication
5 Blue cable (-) with HART resistance, as an alternative white cable (-) without
HART resistance
6 Voltage supply, sensor
7 Unused cores to be insulated
Note:
The unused cores of the sensor connection cable must be insulated.
Wiring plan with voltage
supply of the sensor via
PLICSMOBILE
Wiring plan with external
voltage supply of the
sensor

18
5 Connecting to power supply
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
SIM
Status
Send Off On
123
+-
123
+
-
45
+
-
+
-
Output
Solar panel
input
Output
OffOn
PLICSMOBILE T81
PLICSMOBILE B81
3
2
1
54
6
Fig. 8: Connection of the battery and the solar panel
1 Brown cable (+) for sensor power supply
2 Blue cable (-) for sensor power supply
3 White cable for communication PLICSMOBILE T81 - B81
4 Brown cable (+) for accumulator charging via solar panel
5 Blue cable (-) for accumulator charging via solar panel
6 Power supply from the solar panel
Wiring plan battery/solar
panel

19
6 Battery operation and power saving mode
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
6 Battery operation and power saving mode
6.1 Battery/accumulator operation
If no mains voltage is available, PLICSMOBILE can be also powered
with batteries. For this purpose, an optional power pack is available
in a separate housing (PLICSMOBILE B81).This power pack can be
either ordered or equipped with chargeable accumulators or Lithium
batteries. As an alternative, an external battery/accumulator can be
connectedviathevoltagesupplyterminals.Youcannddetailed
informationofthevoltagesupplyinchapter"Technical data".
When battery/accumulator operation and time-controlled measure-
ment transmission are activated, the power saving mode should be
switchedonandtheBluetoothfunctionswitchedotoincreasethe
operatingtime(detailsseechapter"Power options").Inaddition,the
HART Multidrop mode should be switched on.
Note:
For charging the accumulators the ambient temperature must be in
a range of 0 … +45 °C (+32 … +113 °F).Temperatures outside this
range are permitted, however due to the protective circuit integrated
in the instrument, charging is not possible.
6.2 External battery PLICSMOBILE B81
The PLICSMOBILE B81 was especially developed for the power
supply of PLICSMOBILE T81. It can be optionally equipped with
rechargeable accumulators or non-rechargeable batteries of series
"D"(Mono).
Note:
ThereisasafetyinstructionleaetattachedtoeachPLICSMOBILE
B81 which must be read before setup and observed.
With the Ex version, one of the two following batteries/accumulators
must be used. If other batteries/accumulators are used, the approval
becomes invalid.
If there is no solar panel available at the installation location, then
PLICSMOBILE B81 should be equipped with non-chargeable Li-
batteries. As an alternative, standard Alkaline batteries can be used,
the lifetime is hence shorter.We recommend using Lithium batter-
iesLSH20ofMessrs.Saft(VEGAorderno.2.54970).Youcannd
further information of this battery type in the technical data.
Warning:
Whenusingnon-chargeablebatteries,theterminalsofthe"Solar
Panel Input"mustnotbeconnected.Ifvoltageisapplied,thebatteries
willbedestroyedandtherewillbearehazard.
If a solar panel is used, PLICSMOBILE B81 must be equipped with
rechargeable NiMH accumulators.The solar panel is connected di-
rectly to terminals 4 and 5, a charge regulator is integrated in the bat-
tery cover.We recommend the use of NiMH accumulators 5030641
Battery operation
Accumulator operation

20
6 Battery operation and power saving mode
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
fromAnsmann(VEGAorderingno.2.54971).Youcanndfurther
information about this battery type in the technical data.
Note:
For charging the accumulators the temperature must be in a range
of 0 … +45 °C (+32 … +113 °F). Temperatures outside this range
are permitted, however due to the protective circuit integrated in the
instrument, charging is not possible.
The battery cable joins PLICSMOBILE B81 with PLICSMOBILE T81.
It is available with 5/10/25 m length. Connect the cable as shown in
the wiring plan. Make sure that the terminals of both instruments are
connected 1 : 1 via this cable.
1. Make sure that the switch on the upper side of the cover is set to
"OFF"
2. Unscrewthecentralxingscrewwithacoin.Thenyoucanre-
move the battery cover.
3. Insert the four batteries/accumulators into the battery compart-
ment.The respective polarity is printed at the bottom of the
compartment but also in the battery cover.
4. Place back the battery cover to the battery compartment. Make
sure that the position is correct, the battery cover can only be at-
tached in one direction.
5. Push the battery cover slightly downward on the points marked
with"PUSH"andscrewinthecentralxingscrew.
6. If all components are connected completely, you can set the
switchontheuppersideofthebatterycoverto"ON"
6.3 Solar panel PLICSMOBILE S81
Via the solar panel PLICSMOBILE S81 you can power the
PLICSMOBILE T81, the accumulator pack will also be charged. Two
solarpanelswithdierentsize/capacityareavailable:withasunny
environment and max. one measured value transmission per day, the
small5Wmoduleissucient;withintermittentshadowingand/or
more than one measured value transmission per day, the larger 20 W
module should be used.The technical data of both modules and the
order information can be found in the supplement of this instruction
manual.
Orient the solar module in such a way that in sunless seasons its
positionisidealtothesunandmaximumeciencyisachieved.Be-
cause in these seasons, the sun is very low, a steep installation angle
(approx. 60 - 75 degrees) is recommended so that the sunrays reach
the module at right angles. A tube holder suitable for the module is
available in the scope of delivery. The adjustment range of the inclina-
tion is 38 to 75 degrees, the orientation of the direction is individually
possible due to the tube mounted. As an option also a holder for
mounting on vertical surfaces such as walls is available.
Connection
Insert batteries
Mounting