Safe and secure operation of the head transmitter can only be guaranteed if the
operating instructions and all safety notes contained are read, understood and
followed.
1.1 Correct use
• The unit is a universal, presettable temperature transmitter for resistance
thermometer (RTD), thermocouple (TC) as well as resistance and voltage sensors.
The unit is constructed for mounting in a connection head (form B) and a field
housing.
• The user cannot be held responsible for damage caused by misuse of the unit.
• Separate Ex documentation, is contained in this operating manual, for
measurement systems that are to mounted in hazardous areas. The installation
conditions as well as the connection values indicated in these instructions must
be completely followed!
1.2 Installation, commissioning and operation
The unit is constructed using the most up-to-date production equipment and
complies to the safety requirements of the EU guidelines. However. If it is installed
incorrectly or is misused then certain application dangers can occur. Installation,
wiring and maintenance of the unit must only be done by trained skilled personnel
who are authorised to do so by the plant operator. These skilled staff must have read
and understood these instructions and must also follow them to the letter. The plant
operator must make sure that the measurement system has been correctly wired to
the connection schematics.
English
Operational safety
Returns
Safety pictograms
and symbols
1.3 Operational safety
Hazardous areas
When installing the unit in a hazardous area the national safety requirements must be
met. Make sure that all personnel are trained in these areas. The measurement and
safety values must be followed in all these installations.
Technical advancement
The manufacturer reserves the right to change the technical data without notification if
this advances the technical development. Details regarding the validity and further
expansions to these instructions can be obtained from your nearest sales office.
1.4 Returns
When returning the unit for repair please add a description of both the fault and the
application.
On transport damage please contact both the supplier and shipping agent.
1.5 Safety pictograms and symbols
Safe and reliable operation of this unit can only be guaranteed if the safety hints and
warnings in these operating instructions are followed. The safety hints in these
instructions are highlighted using the following symbols.
Hint:
This symbol indicates activities and actions that, if not followed correctly, could have
an indirect influence on the unit operation or could lead to an unforeseen unit reaction.
Attention:
This symbol indicates activities and actions that, if not followed correctly, could lead
to faulty unit operation or even damage to the unit.
21
Page 4
Identification
Unit identification
Hazardous area, certified equipment:
If this character can be seen on the unit then it may be operated in hazardous areas.
Non-hazardous areas:
This symbol identifies the non-hazardous areas in these instructions.
Units that operate in the non-hazardous areas but that are connected to the
hazardous areas must also be certified.
2 Identification
2.1 Unit identification
Delivery contents
Head transmitter legend plate
Identification for hazardous area use
(only on Ex certified units)
CE-marks, conformity description
The unit has been manufactured using up-to-date production equipment and has left
our works in perfect and safe condition. It complies with the safety requirements to
EN 61 010.
The unit described in these instructions therefore fulfils the legal requirements set by
the EU guide lines. The manufacturer confirms a positive completion of all tests by
fitting the unit with a CE mark.
Order code (example)
2.2 Delivery contents
The delivery contents of a temperature head transmitter are as follows:
• Head transmitter
• Installation screws and springs
• Operating instructions
• ATEX-operating instructions for use in hazardous areas
22
Hint!
Please take note of the head transmitter accessories in chapter 9.
Page 5
Function
Measurement
system
Function and system construction
3 Function and system construction
3.1 Function
Electronic monitoring and transformation of various input signals into an analogue
output signal in industrial temperature measurement. The head transmitter is mounted
in a connection head form B or separated from the sensor in field housing. Setting up
of the head transmitter is done using a PC and setting up software. The configuration
kit is required for setting up the head transmitter.
3.2 Measurement system
Transforming the following input signals:
• Resistance thermometers (RTD) and resistance sensors
(in 2-,3- or 4-wire connection systems)
• Thermocouples (TC) and
• voltage sensors into a scalable analogue output signal (4...20 mA or 20...4 mA).
Fault monitoring of:
• Measurement range override or undercut
• Sensor breakage and short circuit
[1]
Installation
conditions
The head transmitter is set up using a PC and the PC setting up programme together
with the configuration kit. The kit can be obtained as a unit accessory.
Application in hazardous areas is certified to ATEX II 1 G
EEx ia IIC T4/T5/T6.
4 Installation
4.1 Installation conditions
• When installing and operating the unit please take note of the allowable ambient
temperature (see chapter 11: Technical data).
• When operating in hazardous areas please take note and operate within the limits
set in the certification (see chapter 11: Technical data).
Dimensions
The head transmitter dimensions can be found in Chapter 11: Technical data.
Installation point
• Sensor connection head to DIN 43 729 Form B
• Field housing
Installation angle
There are no limits as to the angle on installation.
Installation
4.2 Installation
For installation proceed as follows:
Installing in a sensor connection head to DIN 43 729 Form B (Fig. 4.1)
• Feed the sensor inset cables (Pos. 5) through the central hole in the head
transmitter (Pos. 4).
• Place the installation springs (Pos. 3) onto the screws (Pos. 2).
• Feed the installation screws (Pos. 2) through the holes in the head transmitter and
the holes in the sensor inset (Pos. 5). Fix both screws using the circlips (Pos. 6).
• Position the head transmitter in the connection head in such a way so that the
current output terminals (terminal 1 and 2) are towards the cable entry gland
(Pos. 7).
• Fix the head transmitter (Pos. 4) and sensor inset (Pos. 5) into the connection head.
[1] not for thermocouples (TC)
23
Page 6
Installation
Installation in a field housing (Fig. 4.2)
• Feed the installation screws (Pos. 2) with installation springs (Pos. 3) through the
holes in the head transmitter (Pos. 4). Fix these using the circlips (Pos. 5).
• Screw the head transmitter into the field housing using a screw driver.
Attention:
In order to avoid damaging the head transmitter do not over tighten the installation
screws.
Pos.1: Cover
Pos.2:
Installation screws
Pos.3:
Installation springs
Pos.4:
Head transmitter
Pos.5:
Sensor inset with
connection cables
Pos.6:
Circlips
Pos:7:
Cable gland
Fig. 4.1: Installation of head transmitter into a
Form B sensor connection head.
Pos.1: Cover
Pos.2: Installation screws
Pos.3: Installation springs
Pos.4: Head transmitter
Pos.5: Circlips
Pos:6: Field housing
Fig. 4.2: Installation of head transmitter into a
field housing
24
Page 7
Wiring overview
Wiring
5 Wiring
5.1 Overview
Terminal layout
Pos.A: SETUP socket
Measurement unit
connection
Fig. 5.1: Head transmitter wiring
2-wire
3-wire
4-wire
5.2 Measurement unit connection
Attention:
Switch off power supply before opening the housing cover. Do not install or connect
the unit to mains power. If this is not followed parts of the electronic circuit will be
damaged.
• Sensors:
Connect the sensor cables to the respective head transmitter terminals
(Terminals 3 to 6) by following the wiring diagram (see fig. 5.1).
• Output signal and power supply:
Open the PG cable gland on the head transmitter or field housing. Feed the cable
through the opening in the PG cable gland and then connect the cable cores to
terminals 1 and 2 according to the wiring diagram (see fig. 5.1).
• PC configuration (SETUP socket):
Open the flap on the SETUP socket (Fig. 5.1, Pos. A) and connect the SETUP
connection cable.
Hint:
The screws on the terminals must be screwed up tightly. Head transmitter
configuration during measurement operation is possible. There is no need to
disconnect cables!
Potential leveling
Hint:
Please take note of the following when installing the head transmitter remotely in a
field housing. The screen on the output (output signal 4...20 mA) must have the same
potential as the screen at the sensor connections!
For an effective screening the cable screen must be widely connected to the field
housing. This can be achieved by connecting the cable screen to the special
EMC-PG13.5 cable gland.
Open the field housing PG cable gland and connnect the screen of the output and
sensor connection according to Fig. 5.2.
25
Page 8
a
aaaaaaaa
b
bbbbbbbb
Wiring
When using earthed thermocouples screening of the
output cable (4 ... 20 mA cable) is recommended.
In plants with strong EMC problems screening of all
cables with a low ohm connection to the transmitter
housing is recommended.
aaaaaaa
bbbbbbb
aaaaaaa
bbbbbbb
Fig. 5.2: Screening on
remote installation
26
Page 9
Operation
Communication
Operation
6 Operation
6.1 Short form instructions (SETUP)
Presettable parameters
- Sensor type (see Chap. 11 Techn. data)
Standard settings
(Quick-SETUP)
Expanded settings
Service functions- Simulation (on/off)
- Connection mode
- Units (°C/°F)
- Measurement range start (see Chap. 11 Techn. data)
- Measurement range end (see Chap. 11 Techn. data)
- Cold junction compensation (internal/external)
- Compensation resistance (0...20 Ω)
- Fault condition reaction (see Chap. 11 Techn. data)
- Output (analogue standard/inverse)
- Damping (0...60 s)
- Offset (-9.9 to +9.9 K)
- Measurement point identification/TAG
6.2 Communication
The head transmitter must be set up using a PC and configuration set. The following
points must be taken into account if trouble free setting up is to be achieved:
• Configuration software installation
• Connect the head transmitter to the PC using the connection cable from the
configuration set
[1]
[2]
[3]
Configuration software installation
- IBM PC or compatible computer (min. Pentium 166 MHz)
- Windows 95/98/ME/NT4.0/2000
System conditions
Recommended minimum
configuration
Installation start
-64MBRAM
- min. 30 MB free memory on hard drive
- CD-ROM drive
- Screen resolution 800 x 600 Pixel
- free serial interface
- Pentium 400 MHz
- 128 MB main RAM
- 120 MB free hard drive memory
- Screen resolution 1024 x 768 Pixel
Start Windows
1. Place installations-CD in the respective drive
2. Start “Setup.exe” and follow the installation instructions
3. If required the help/operating manual can be printed out once the
software has been successfully installed.
Connecting the head transmitter to the PC using the configuration kit
connection cable
1. Connect the SETUP connector of the interface cable to the SETUP socket in the
head transmitter (see chapter 5.2 Connecting measurement unit).
2. Connect the RS232C connector to a free serial interface socket on the PC. In order
to achieve optimum connection tighten the RS232C connector screws to the PC.
Hint:
Configuration of the head transmitter can be done either under power e.g. using
a 9 Volt battery or in an installed condition during measurement operation.
[1] 2-, 3-, or 4-wire connection
[2] on TC-connection
[3] on 2-wire connection
27
Page 10
Commissioning
Installation check
Commissioning
7 Commissioning
7.1 Installation check
Monitor all connections making sure they are tight. In order to guarantee fault free
operation the terminal screws must be tight onto the connection cables. The unit is
now ready for operation.
7.2 Commissioning
Once the power supply has been connected the head transmitter is operational.
Setting up using the PC configuration software
The head transmitter left the factory with a default parameter configuration. If no
customer specific configuration was mentioned on the order then the default
parameter configuration is constructed as follows:
SensorPt100 (RTD)
Connection mode3-wire
Function check
Measurement range and
units
Hint:
If a change has been made to the measurement point then the head transmitter can
be re-configured. In order to re-configure the parameters follow these instructions:
• Install the configuration software and make connection to the PC (see Chap. 6,
Operation).
• For detailed operating instructions for the PC configuration software please read the
online documentation contained in the PC configuration software.
Interactive setting up of the temperature transmitter
Customer specific linearisation and sensor matching is done using the SMC32.exe
(Sensor Matching Calibration) configuration software. The SMC32.exe programme
calculates the linearisation coefficients X0 to X4, that need to be entered into the PC
configuration software.
0...+100°C
7.3 Function check
Measuring the analogue 4-20 mA output signal or following failure signals:
Measurement range
undercut
linear fall to 3.8 mA
28
Measurement range excesslinear rise to 20.5 mA
Sensor break; sensor short
circuit
≤ 3.6 mA or ≥ 21.0 mA selectable
Page 11
8 Maintenance
Maintenance, accessories, fault finding
Maintenance
Accessories
Fault finding
The head transmitter is maintenance free.
9 Accessories
Configuration set for PC SETUP settings of the head transmitter:
SETUP programme and PC serial interface cable (TTL/RS 232C).
Order No.:TMT181A-VK
Hint:
Please contact your supplier when ordering!
10 Fault finding
10.1 Spare parts
Head transmitter installation set
(4 screws, 6 springs, 10 circlips)
Order No.:510 01112
10.2 Repair concept and disposal
Due to its construction the head transmitter cannot be repaired.
Disposal:
When disposing of the head transmitter please take note of the local disposal
regulations.
10.3 Fault finding and repairs
Trouble shooting in general
FaultCauseAction/cure
Re-connect correctly (see
connection diagram)
Check the current loop
No communication
2 wire connection incorrect
No power supply to the 2 wire
connection
Power supply to low (<8 V)Check power supply
Interface cable defectiveCheck the interface cable
PC-interface defectiveCheck the interface of your PC
Head transmitter defectiveReplace head transmitter
29
Page 12
Maintenance, accessories, fault finding
Trouble shooting on RTDs (Pt100/Pt500/Pt1000/Ni100)
FaultCauseAction/cure
Sensor defectiveCheck sensor
Current
(≤ 3.6 mA or ≥ 21 mA)
Incorrect or inaccurate
measured value
Incorrect RTD connection
Incorrect 2 wire connection
No power supply on the 2 wire
connection
Incorrect transmitter programming
(number of wires)
Programming
Head transmitter defectiveReplace head transmitter
Sensor is incorrectly installedReinstall sensor correctly
Heat dissipation via sensor
Incorrect transmitter programming
(number of wires)
Connect the cables correctly (see
connection diagram)
Connect the cables correctly (see
connection diagram) (Polarity)
Check current loop; the supply
should be >8 V
Change parameter ‘connection
mode’ (see chap. Operation)
Thermocouple set up (see chap.
Operation). Change to RTD
Monitor sensor installation
positioning
Change parameter ‘connection
mode’
Change scale
Compensate cable resistance
Offset incorrectly set upMonitor offset
Trouble shooting for thermocouple connection (TC)
FaultCauseAction/cure
Connect the sensor correctly (see
connection diagram) (Polarity)
Sensor type ‘RTD’ is set up. Set up
the correct thermocouple
Connect the cables correctly (see
connection diagram)
Check current loop; the supply
should be >8 V
Change scale
See chap. ‘Operation’ and
‘Technical data’
Current
(≤ 3.6 mA or ≥ 21 mA)
Incorrect or inaccurate
measured value
Incorrect sensor connection
Sensor defectiveCheck sensor
Incorrectly set up
Incorrect 2 wire connection (current
loop)
No power supply on the 2 wire
connection
Head transmitter defectiveReplace head transmitter
Sensor is incorrectly installedReinstall sensor correctly
Heat dissipation via sensorMonitor sensor installation positioning
Incorrect transmitter programming
(scale)
Wrong thermocouple set upChange parameter ‘sensor type’
Incorrect comparison set up
30
Offset incorrectly set upCheck offset
Fault due to the thermo wire welded
to the well (interference voltages
incurred)
Please use a sensor in which the
thermo wire in not welded
Page 13
Function and system
construction
11 Technical Data
Measurement
principle
Measurement system
Electronic measurement and conversion of input signals in industrial temperature
measurement.
The temperature head transmitter is a two wire transmitter with an analogue
output. It has measurement input for resistance thermometers (RTD) in
2-, 3- or 4-wire connection, thermocouples and voltage transmitters. Setting up of
the unit is done using the PC configuration kit.
Technical Data - Appendix
Input
Resistance thermometer (RTD)
TypeMeasurement rangesmin. range
Pt100
Pt500
Pt1000
according to IEC 751
Ni100
Ni500
Ni1000
according to DIN 43760
Connection type
Sensor cable
resistance
Sensor current
-200 to 850 °C-328 to 1562 °F
-200 to 250 °C-328 to 482 °F
-200 to 250 °C-328 to 482 °F
-60 to 180 °C-76 to 356 °F
-60 to 150 °C-76 to 302 °F
-60 to 150 °C-76 to 302 °F
2-, 3- or 4-wire connection
cable resistance compensation possible in the 2 wire system (0...20 Ω)
max. 11 Ω per cable
≤ 0.6 mA
10 K (18 °F)
10 K (18 °F)
10 K (18 °F)
10 K (18 °F)
10 K (18 °F)
10 K (18 °F)
Resistance transmitter (Ω)
TypeMeasurement rangemin. range
Resistance (Ω)
10... 400 Ω
10...2000 Ω
10 Ω
100 Ω
Thermocouples (TC)
TypeMeasurement rangemin. range
B (PtRh30-PtRh6)
C (W5Re-W26Re)
D (W3Re-W25Re)
[3]
[3]
E (NiCr-CuNi)
J (Fe-CuNi)
K (NiCr-Ni)
L (Fe-CuNi)
[2]
N (NiCrSi-NiSi)
R (PtRh13-Pt)
S (PtRh10-Pt)
T (Cu-CuNi)
U (Cu-CuNi)
MoRe5-MoRe41
accord. to IEC 584 Part 1
[2]
[1]
Cold junctioninternal (Pt100) or external (0...80 °C)
Cold junction
accuracy
Sensor current350 nA
0 to +1820 °C32 to 3308 °F
0 to +2320 °C32 to 4208 °F
0 to +2495 °C32 to 4523 °F
-200 to +915 °C-328 to 1679 °F
-200 to +1200 °C-328 to 2192 °F
-200 to +1372 °C-328 to 2501 °F
-200 to + 900 °C-328 to 1652 °F
-270 to +1300 °C-454 to 2372 °F
0 to +1768 °C32 to 3214 °F
0 to +1768 °C32 to 3214 °F
-200 to + 400 °C-328 to 752 °F
-200 to + 600 °C-328 to 1112 °F
0 to +2000 °C32 to 3632 °F
±1K
500 K (900 °F)
500 K (900 °F)
500 K (900 °F)
50 K (90 °F)
50 K (90 °F)
50 K (90 °F)
50 K (90 °F)
50 K (90 °F)
500 K (900 °F)
500 K (900 °F)
50 K (90 °F)
50 K (90 °F)
500 K (900 °F)
Voltage transmitters (mV)
TypeMeasurement rangemin. range
Millivolt transmitter (mV) -10...100 mV5 mV
[1] no reference
[2] according to DIN 43710
[3] according to ASTM E 988
31
Page 14
Technical Data - Appendix
Output
Output (analogue)
Output signal4...20 mA, 20...4 mA
Transmission astemperature linear, resistance linear, voltage linear
Max. load(V
Digital filter
st
degree
1
Input current required
Current limit
0...8 s
≤ 3.5 mA
≤ 23 mA
Switch on delay4 s
power supply
(during power up Ia= 3.8 mA)
- 8 V) / 0.022 A
Reply time1 s
Failure signal (fault monitoring)
Measurement range
undercut
Exceeding
measurement range
Sensor breakage;
Sensor short circuit
Linear drop to 3.8 mA
Linear rise to 20.5 mA
≤ 3.6 mA or ≥21.0 mA can be set up
[1]
Electrical connection
Power supplyUb= 8...35 V DC, polarity protected
Galvanic isolation
(In/out)
Allowable ripple
Û = 3.75 kV AC
U
≤ 5 V at Ub≥ 13 V, f
ss
max.
= 1 kHz
Accuracy
Reference
conditions
Calibration temperature 23 °C ± 5 K
Resistance thermometer (RTD)
TypeMeasurement accuracy
Pt100, Ni100
Pt500, Ni500
Pt1000, Ni1000
0.2 K or 0.08%
0.5 K or 0.20%
0.3 K or 0.12%
Resistance transmitter (Ω)
TypeMeasurement accuracy
Resistance (Ω)
± 0.1 Ω or 0.08%10...400 Ω
± 1.5 Ω or 0.12%10...2000 Ω
Thermocouple (TC)
TypeMeasurement accuracy
K, J, T, E, L, U
N, C, D
S, B, R MoRe5-MoRe41
Influence of the internal
reference junction
typ. 0.5 K or 0.08%
typ. 1.0 K or 0.08%
typ. 2.0 K or 0.08%
Pt100 DIN IEC 751 Cl. B
[2]
[2]
Measurement
range
[2]
32
Voltage transmitter (mV)
TypeMeasurement accuracy
Millivolt transmitter (mV)
[1] Not for thermocouple
[2] % is related to the adjusted measurement range (the value to be applied is the greater)
∆ϑ = Deviation of the ambient temperature according to reference junction
Long term stability
≤ 0.1 K/Year
[2]
or ≤ 0.05%/Year
[2] [3]
Installation conditions
Installation angleNo limit
Installation areaConnection head accord. to DIN 43 729 Form B; field housing
Ambient conditions
Ambient temperature -40...+85 °C (for Ex-areas see Ex-certification)
Storage temperature-40...+100 °C
Climatic classTo EN 60 654-1, Class C
Moisture
condensation
Ingress protectionIP 00 / IP 66 installed
Vibration protection4g / 2...150 Hz according to IEC 60 068-2-6
EMC immunity
Allowable
Interference immunity and interference emission according to
EN 61 326-1 and NAMUR NE21
Dimensions
Dimensions
Weightapprox. 40 g
Materials
TerminalsCable up to max. 1.75 mm
[1] All data is related to a measurement end value (FSD) of 20 mA
[2] Under reference conditions
[3] % is related to the adjusted measurement range (the value to be applied is the greater)
Housing: PC
Potting: PUR
2
(secure screws)
Dimensions in mm
33
Page 16
Technical Data - Appendix
Terminal connections
Power supply and current outputSETUP socket
Sensor connection2-wire3-wire4-wire
Display and operating
level
Certification
Appendix
Remote operation
Configuration setPC configuration kit
ConfigurationUsing PC programme
InterfacePC interface connection cable TTL -/- RS 232 with plug
Sensor type and connection type, engineering units (°C/°F), measurement range,
Configurable
parameters
CE mark
Ex certification
internal/external cold junction compensation, cable resistance compensation on
2 wire connection, fault conditioning, output signal (4...20/20...4 mA), digital filter
(damping), offset, measurement point identification (8 characters), output
simulation
The measurement system fulfills the requirements demanded by the EU
regulations. The manufacturer acknowledges successful unit testing by adding
the CE mark.
For further details on the available Ex versions (ATEX, FM,CSA, etc.) contact
your respective sales organisation. All relevant data for hazardous areas can be
found in separate Ex documentation. If required, please request copies from
your sales organisation.
12 Appendix
Short form instructions (SETUP)
Presettable parameters
34
- Sensor type (see Chap. 11 Techn. data)
Standard settings
(Quick-SETUP)
Expanded settings
Service functions- Simulation (on/off)
[1] 2-, 3-, or 4-wire connection
[2] on TC-connection
[3] on 2-wire connection
- Connection mode
- Units (°C/°F)
- Measurement range start (see Chap. 11 Techn. Data)
- Measurement range end (see Chap. 11 Techn. Data)
- Cold junction compensation (internal/external)
- Compensation resistance (0...20 Ω)
- Fault condition reaction (see Chap. 11 Techn. Data)
- Output (analogue standard/inverse)
- Damping (0...60 s)
- Offset (-9.9 to +9.9 K)
- Measurement point indentification/TAG
[1]
[2]
[3]
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