Endress+Hauser iTEMP PCP TMT181 User manual

BA100R/24/ae/06.05
51006521
Operating instructions
iTEMP®PCP TMT181
Temperature head transmitter

Safety message TMT181
2Endress+Hauser
Safety message
Instructions and procedures in the operating instructions may require special precau-tions to ensure
the safety of the personnel performing the operations. Information that potentially raises safety
issues is indicated by safety pictograms and symbols. Please refer to the safety messages before
performing an operation preceded by pictograms and symbols, see chapter 1.5.
Though the information provided herein is believed to be accurate, be advised that the information
contained herein is NOT a guarantee of satisfactory results. Specifically, this information is neither
a warranty nor guarantee, expressed or implied, regarding performance; merchantability, fitness, or
other matter with respect to the products; and recommendation for the use of the product / process
information in conflict with any patent. Please note that the manufacturer reserves the right to
change and / or improve the product design and specifications without notice.
#Warning!
Failure to follow these installation guidelines could result in death or serious injury.
– Make sure only qualified personnel perform the installation.
Explosions could result in death or serious injury.
– Do not remove the connection head cover in explosive atmospheres when the circuit is live.
– Configuration of the transmitter is not permitted in a hazardous area, make sure the transmitter
setup is done before the transmitter will be installed in hazardous area.
– Verify that the operating atmosphere of the transmitter is consistent with the appropriate
hazardous locations certifications.
– All connection head covers must be fully engaged to meet explosion-proof requirements.
Process leaks could result in death or serious injury.
– Do not remove the thermowell while in operation.
– Install and thighten thermowells and sensors before applying pressure.
Electrical shock could cause death or serious injury.
– Use extreme caution when making contact with the leads and terminals.
Brief overview
Using the following short form instructions you can commission your system easily and swiftly:
Safety notes Page 4
Ð
Installation Page 7
Ð
Wiring Page 10
Ð
Display and operating elements
Preparing the communication with PC configuration software
Page 12
Ð
Instrument configuration (including a description of the unit
functions)
A complete description of all the functions as well as a detailed overview of
the functionality can be found in this chapter.
Page 13

TMT181 Table of contents
Endress+Hauser 3
Table of contents
1 Safety notes . . . . . . . . . . . . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning and operation . . . . . . . . 4
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Returns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Safety pictograms and symbols . . . . . . . . . . . . . . . . . 5
2 Identification . . . . . . . . . . . . . . . . . . . . 6
2.1 Unit identification . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Delivery contents . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . . 7
3 Installation . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Installation conditions . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Measurement unit connection . . . . . . . . . . . . . . . . 10
4.3 Potential grounding . . . . . . . . . . . . . . . . . . . . . . . . 11
4.4 Ground the Transmitter . . . . . . . . . . . . . . . . . . . . . 11
5 Operation . . . . . . . . . . . . . . . . . . . . . . 12
5.1 Communication . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Commissioning. . . . . . . . . . . . . . . . . . 13
6.1 Installation and function check . . . . . . . . . . . . . . . 13
6.2 Switch on the device . . . . . . . . . . . . . . . . . . . . . . . 13
6.3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Maintenance. . . . . . . . . . . . . . . . . . . . 16
8 Accessories. . . . . . . . . . . . . . . . . . . . . 16
9 Trouble-shooting . . . . . . . . . . . . . . . . 17
9.1 Trouble-shooting instructions . . . . . . . . . . . . . . . . 17
9.2 Application errors without messages . . . . . . . . . . . 17
9.3 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
9.4 Returns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9.5 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9.6 Software history . . . . . . . . . . . . . . . . . . . . . . . . . . 19
10 Technical Data . . . . . . . . . . . . . . . . . . 20
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Safety notes TMT181
4Endress+Hauser
1 Safety notes
Safe and secure operation of the head transmitter can only be guaranteed if the operating
instructions and all safety notes are read, understood and followed.
1.1 Designated use
• The unit is a universal, presettable temperature head transmitter for resistance temperature
detectors (RTD), thermocouple (TC) as well as resistance and voltage sensors. The unit is
constructed for mounting in a connection head (DIN form B) or field housing.
• The manufacturer cannot be held responsible for damage caused by misuse of the unit.
• Separate Ex documentation is part of this operating manual, for measurement systems in
hazardous areas. The installation conditions and connection values indicated in these instructions
must be 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 local guidelines. The temperature transmitter is fully factory tested according to
the specifications indicated on the order. However, if it is installed incorrectly or is misused, certain
application dangers can occur. Installation, wiring and maintenance of the unit must only be done
by trained, skilled personnel who are authorized to do so by the plant operator. This skilled staff
must have read and understood these instructions and must follow them to the letter. The plant
operator must make sure that the measurement system has been correctly wired to the connection
schematics.
Electrical temperature sensors such as RTD's and thermocouples produce low-level signals
proportional to their sensed temperature. The temperature transmitter converts the low-level sensor
signal to a standard 4 to 20 mA DC signal that is relatively insensitive to lead length and electrical
noise. This current signal is then transmitted to the control room via two wires.
The transmitter needs to be commissioned before installation in a hazardous area. Configuration of
the device in explosion area is not allowed. Make sure the instruments in the loop are installed in
accordance with intrinsically safe or non-incendive field wiring practices before connecting in an
explosive atmosphere.
The transmitter electronics module is permanently sealed within the housing, resisting moisture and
corrosive damage. Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
#Warning!
Electrical shock could cause death or serious injury. If the sensor is installed in a high voltage
environment and a fault or installation error occurs, high voltage may be present on the transmitter
leads and terminals.
Temperature Effects
The transmitter will operate within specifications for ambient temperatures between -40 and 185 °F
(-40 and 85 °C). Heat from the process is transferred from the thermowell to the transmitter
housing. If the expected process temperature is near or beyond specification limits, consider the use
of additional thermowell lagging, and extension nipple, or a remote mounting configuration to
isolate the transmitter from the process.

TMT181 Safety notes
Endress+Hauser 5
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. Strict compliance with installation instructions and
ratings as stated in this documentation is mandatory.
The measuring device complies with the general safety requirements in accordance with IEC61010,
the EMC requirements of IEC61326 and NAMUR recommendation NE21 and NE43.
Technical advancement
The manufacturer reserves the right to modify technical data without prior notice. Your distributor
can supply you with current information and updates to these Operating Instructions.
1.4 Returns
Please follow the Return Authorization Policy at the end of these instructions.
1.5 Safety pictograms and symbols
Safe and reliable operation of this unit can only be guaranteed if the safety notes and warnings in
these operating instructions are followed. The safety notes in these instructions are highlighted
using the following symbols.
!Note!
This icon 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.
"Caution!
This icon indicates activities and actions that, if not followed correctly, could lead to faulty device
operation or even damage to the unit.
#Warning!
This icon indicates activities and actions that, if not followed correctly, could lead to personal injury,
a safety risk or even total damage to the unit.
120
Explosion protected, type examined operating equipment!
If one of these icons is on the device’s nameplate, the device can be used in hazardous areas.
-Hazardous area!
This symbol identifies the hazardous area in the diagrams in these Operating Instructions.
– Devices that are used in hazardous areas or cables for such devices must have the corresponding
type of protection.
.Safe area (non-hazardous areas)!
This symbol identifies the non-hazardous area in the diagrams in these Operating Instructions.
– Devices in non-hazardous areas must also be certified if connection cables run through a
hazardous area.

Identification TMT181
6Endress+Hauser
2 Identification
2.1 Unit identification
2.1.1 Legend plate
Compare the legend plates on the head transmitter with the following figures:
Fig. 1: Example: Head transmitter legend plate
Fig. 2: Order code with configuration (example) - K = Standard model, North America region
Fig. 3: Identification for hazardous area use (example, only on FM certified units)
CE Mark, declaration of conformity 4
The devices are designed to meet state-of-the-art safety requirements, have been tested, and left the
factory in a condition in which they are safe to operate. The devices comply with the applicable
standards and regulations in accordance with IEC61010 "Protection Measures for Electrical
Equipment for Measurement, Control, Regulation and Laboratory Procedures" and with the EMC
requirements of IEC61326.The measuring system described in these Operating Instructions thus
complies with the statutory requirements of the EC Directives. The manufacturer confirms
successful testing of the device by affixing to it the CE mark.
UL recognized component to UL 3111-1 â
CSA GP approved
GL German Lloyd marine approval Ó
GL Type Approval for temperature measurements in hazardous locations on GL Classed Vessels,
Marine and Offshore Installations.

TMT181 Installation
Endress+Hauser 7
2.2 Delivery contents
The delivery contents of the temperature head transmitter are as follows:
• Temperature head transmitter
• Installation screws, installation springs and E-ring
• Operating instructions
• Control drawing for use in hazardous areas
!Note!
Please take note of the head transmitter accessories in chapter 8 "Accessories".
2.3 Registered trademarks
•iTEMP
®and ReadWin®2000
are registered trademarks of Endress+Hauser Wetzer GmbH + Co. KG, Nesselwang, Germany
3 Installation
3.1 Installation conditions
• When installing and operating the unit, please take note of the allowable ambient temperature
(see chapter 10 "Technical Data").
• When using the unit in a hazardous area, the limits indicated in the certification must be adhered
to (see control drawing).
3.1.1 Dimensions
The head transmitter dimensions can be found in chapter 10 "Technical data".
3.1.2 Installation point
• Sensor connection head to DIN 43 729 Form B
• Field housing
3.1.3 Installation angle
There are no limits as to the angle of installation.

Installation TMT181
8Endress+Hauser
3.2 Installation
3.2.1 Typical European installation
For installation, proceed as follows:
Installing in a sensor connection head to DIN 43 729 Form B (see Fig. 4)
• 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 E-rings (Pos. 6).
• Position the head transmitter in the connection head in such a way 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.
Installation in a field housing (see Fig. 5)
• Feed the installation screws (Pos. 2) with installation springs (Pos. 3) through the holes in the
head transmitter (Pos. 4). Fix these using the E-rings (Pos. 5).
• Screw the head transmitter into the field housing using a screwdriver.
"Caution!
In order to avoid damaging the head transmitter, do not over-tighten the installation screws.
Fig. 4: Installation of head transmitter into a Form B
sensor connection head.
Fig. 5: Installation of head transmitter into field
housing.

TMT181 Installation
Endress+Hauser 9
3.2.2 Typical North American installation
Industrial thermocouple or RTD assembly with head transmitter (see Fig. 6)
• Attach the thermowell (Pos. 1) to the pipe or process container wall. Install and tighten
thermowells before applying process pressure.
• Attach necessary extension nipples and adapters (Pos. 3) to the thermowell. Seal the nipple and
adapter threads with silicone tape.
• Install drain seals if required for severe environments or to satisfy code requirements.
• Feed the installation screws (Pos. 6) through the holes in the head transmitter (Pos. 7).
• Position the head transmitter assembly in the transmitter housing (Pos. 4) in such a way that the
current output terminals (terminal 1 and 2) are towards the conduit.
• Screw the head transmitter assembly (Pos. 5) into the the transmitter housing (Pos. 4) using a
screwdriver. Max.torque ¾ pound-feet (1 Nm).
• Feed the sensor inset cables through the conduit of the transmitter housing and the central hole
in the head transmitter.
• Attach the transmitter housing (Pos. 4) with built-in head transmitter assembly to the nipples and
adapters (Pos. 3). Seal adapter threads with silicone tape.
"Caution!
In order to avoid damaging the head transmitter, do not over-tighten the installation screws.
"Caution!
Pull the field wiring leads through the conduit into the transmitter housing. Attach the sensor and
power leads to the head transmitter. Avoid contact with other terminals.
"Caution!
Install and tighten the transmitter housing cover. Enclosure covers must be fully engaged to meet
explosion-proof requirements.
Fig. 6: Installing the head transmitter - Head transmitter assembly
Pos. 1: Thermowell
Pos. 2: Measuring inset
Pos. 3: Extension neck
Pos. 4: Transmitter housing
Pos. 5: Head transmitter assembly
Pos. 6: Installation screws
Pos. 7: Head transmitter

Wiring TMT181
10 Endress+Hauser
4 Wiring
4.1 Overview
Terminal layout
Fig. 7: Head transmitter wiring
4.2 Measurement unit connection
"Caution!
• Switch off power supply before opening the housing cover. Do not install or connect the unit to
power supply. If this is not followed parts of the electronic circuit will be damaged.
• If the device has not been grounded as a result of the housing being installed, we recommended
grounding it via one of the ground screws.
•Sensors:
Connect the sensor cables to the respective head transmitter terminals (Terminals 3 to 6) by
following the wiring diagram (see Fig. 7).
•Output signal and power supply:
Open the cable gland on the sensor head or field housing. Feed the cable through the opening in
the cable gland and then connect the cable cores to terminals 1 and 2 according to the wiring
diagram (see Fig. 7).
•PC configuration (SETUP socket):
Open the flap on the SETUP socket (see Fig. 7) and connect the SETUP connection cable.
Fig. 8: Connection to PC for configuration

TMT181 Wiring
Endress+Hauser 11
During configuration the head transmitter must be connected to a power source, either a 9 V battery
or a power supply unit (see chapter 5.1 ’Communication’)
!Note!
The screws on the terminals must be screwed in tightly. Configuration during measurement
operation is possible. There is no need to disconnect cables!
4.3 Potential grounding
!Note!
Please take note of the following when remotely installing the head transmitter in a field housing.
The shield on the output (output signal 4 to 20 mA) must be at the same potential as the shield at
the sensor connection. For an effective shielding the cable shield must be solidly connected to the
field housing. This can be achieved by connecting the cable shield to the special EMC cable gland.
4.4 Ground the Transmitter
The transmitter will operate with the current signal loop either floating or grounded. However, the
extra noise in floating systems affects many types of readout devices. If the signal appears noisy or
erratic, grounding the current signal loop at a single point may solve the problem. The best place to
ground the loop is at the negative terminal of the power supply. Do not ground the current signal
loop at more than one point. The transmitter is galvanically isolated to 3.75 kV AC (from the sensor
input to the output), so the input circuit may also be grounded at any single point. When using a
grounded thermocouple, the grounded junction serves as this point.
Fig. 9: Shielding on remote installation
Open the field housing cable gland and connect the
shield of the output and sensor connection according
to the figure opposite (see Fig. 9). When using
grounded thermocouples, shielding of the output cable
(4 to 20 mA cable) is recommended. In plants with
strong EMC problems shielding of all cables with a low
ohm connection to the transmitter housing is
recommended.











Operation TMT181
12 Endress+Hauser
5Operation
5.1 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 setup is to be achieved:
• Configuration software installation
More details and download see:
www.readwin2000.com
• Connect the head transmitter to the PC using the connection cable from the configuration set.
5.1.1 Configuration software installation (ReadWin®2000)
5.1.2 Connecting the head transmitter to the PC using the
configuration kit connection cable
1. Connect the SETUP connector of the interface connecting cable to the SETUP socket in the
head transmitter (see ’Fig. 8’ in Chapter 4.2).
2. Connect the RS232C connector to a free serial interface socket or the USB connector to a free
USB port on the PC. In order to achieve optimum connection, tighten the RS232C connector
screws to the PC.
!Note!
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.
System conditions – IBM PC or compatible computer (min. Pentium 166 MHz)
– Windows 95/98/ME/NT4.0/2000/XP
– 64 MB RAM
–Mouse
–CD-ROMdrive
– Screen resolution 800 x 600 Pixel
– free serial interface
Recommended minimum
configuration
– Pentium 400 MHz
– 128 MB main RAM
– 120 MB free hard drive memory
– Screen resolution 1024 x 768 Pixel
Installation start Start Windows®:
1. Place installations-CD in the respective drive
2. Generally, the ’Autorun’-file starts. If not, 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.

TMT181 Commissioning
Endress+Hauser 13
6 Commissioning
6.1 Installation and function check
Installation check
Monitor all connections making sure they are tight. In order to guarantee fault-free operation, the
terminal screws must be screwed tightly onto the connection cables.
Function check
Measuring the analog 4 to 20 mA output signal or following failure signals:
6.2 Switch on the device
Once the power supply has been connected, the head transmitter is operational.
6.3 Configuration
6.3.1 Setting up using the PC configuration software
The operating and readout software is an universally applicable service and configuration software.
The operating software offers the user the following possibilities:
• Set-up device functions
• Measured value visualization
• Device parameter data storage
• Measuring point documentation
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:
!Note!
If a change has been made to the measurement point then, 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. 5, ’Operation’).
• For detailed operating instructions for the PC configuration software please read the online
documentation (BA137R/09/ae) contained in the PC operation and readout software (see
folder ’Doc’).
This software can be downloaded free of charge from the Internet at the following address:
www.readwin2000.com
#Warning!
Explosions could result in death or serious injury. Configuration of the transmitter is not permitted
in a hazardous area!
Measurement range undercut linear fall to 3.8 mA
Measurement range excess linear rise to 20.5 mA
Sensor break; sensor short circuit1
1) not for thermocouples
≤3.6 mA or ≥21.0 mA
Sensor Pt100 (RTD)
Connection mode 3-wire
Measuring range and units 0 to +100 °C

Commissioning TMT181
14 Endress+Hauser
6.3.2 Description of device functions
All parameters that can be read out and set-up for the configuration of the temperature transmitter
are listed and described in the following table. Also the menu structure in the PC configuration
software is shown in the following table.
Configurable parameters (Default settings in bold)
Standard settings
Sensor type Sensor type
Pt100
Pt500
Pt1000
Ni100
Ni500
Ni1000
TC Typ B
TC Typ C
TC Typ D
TC Typ E
TC Typ J
TC Typ K
TC Typ L
TC Typ N
TC Typ R
TC Typ S
TC Typ T
TC Typ U
10 to 400 Ω
10 to 2000 Ω
-10 to 100 mV
Polynom RTD
Pt50 (GOST)
Pt100 (GOST)
Cu50 (GOST)
Cu100 (GOST)
Range start value
-328 °F (-200 °C)
-328 °F (-200 °C)
-328 °F (-200 °C)
-76 °F (-60 °C)
-76 °F (-60 °C)
-76 °F (-60 °C)
32 °F (0 °C)
32 °F (0 °C)
32 °F (0 °C)
-328 °F (-200 °C)
-328 °F (-200 °C)
-328 °F (-200 °C)
-328 °F (-200 °C)
-454 °F (-270 °C)
32 °F (0 °C)
32 °F (0 °C)
-328 °F (-200 °C)
-328 °F (-200 °C)
10 Ω
10 Ω
-10 mV
20 °F (°C)
-328°F (-200 °C)
-328°F (-200 °C)
-328°F (-200 °C)
-328°F (-200 °C)
Range end value
1562 °F (850 °C)
482 °F (250 °C)
482 °F (250 °C)
356 °F (180 °C)
302 °F (150 °C)
302 °F (150 °C)
3308 °F (1820 °C)
4208 °F (2320 °C)
4523 °F (2495 °C)
1679 °F (915 °C)
2192 °F (1200 °C)
2501 °F (1372 °C)
1652 °F (900 °C)
2372 °F (1300 °C)
3214 °F (1768 °C)
3214 °F (1768 °C)
752 °F (400 °C)
1112 °F (600 °C)
400 Ω
2000 Ω
100 mV
2000 °F (°C)
2012 °F (1100 °C)
1562 °F (850 °C)
392 °F (200 °C)
392 °F (200 °C)
min. range
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
900 °F (500 °C)
900 °F (500 °C)
900 °F (500 °C)
90 °F (50 °C)
90 °F (50 °C)
90 °F (50 °C)
90 °F (50 °C)
90 °F (50 °C)
900 °F (500 °C)
90 °F (50 °C)
90 °F (50 °C)
90 °F (50 °C)
10 Ω
100 Ω
5 mV
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
Connection mode Input of RTD connection mode.
Input:
•2-wire
•3-wire
•4-wire
!Note!
Function is only active on selection of resistance thermometers (RTD).
Unit Input for unit
Input: ° C, °F, K, mV or Ω
Measurement
range start value
Input of 4 mA value.
Input: Limitation values see ’Sensor type’
0 °C
Measurement
range end value
Input of 20 mA value.
Input: Limitation values see ’Sensor type’
100 °C
Coefficient X0 to
X4
On sensor type polynom RTD, see description ’Customer specific linearization’

TMT181 Commissioning
Endress+Hauser 15
Customer-specific linearization
Customer-specific linearization and sensor matching are activated after the POLYNOM RTD
sensor type is selected. Please find detailed information about linearization in the PC configuration
software.
Expanded settings
Cold junction Selection of the internal (Pt100) or an external comparison measurement point.
Input:
•internal
•external
!Note!
Function is only active on selection of a thermocouple (TC), see ’Sensor type’
External
temperature
Input of the external comparison measurement point value.
Input: -40.00 to 85.00 °C (°C, °F, K)
0.00 °C
!Note!
Function is only active when "external" has been selected in the device function ’Cold junction’.
Cable resistance Input of cable resistance compensation on a 2-wire RTD connection.
Input: 0.00 to 20.00 Ω
!Note!
Function is only active when a 2-wire RTD connection has been selected, see ’Sensor type’.
Fault condition Input of the output signal on sensor rupture or short circuit.
Input:
•max (≥21.0 mA)
•min (≤3.6 mA)
Output Input of the standard (4 to 20 mA) or inverse (20 to 4 mA) current output signal.
Input:
•4 to 20 mA
• 20 to 4 mA
Filter Selection of the digital filter 1. order (filter time constant).
Input: 0to 8 s
Offset Input of the zero point correction (offset).
Input: -10.00 to 10.00 °C (-18.00 to 18.00 °F)
0.00 °C
Measuring point
ident
Measuring point description
Input: 8 characters
Service functions
Output simulation Activate simulation mode.
Input:
•OFF
•ON
Input of the simulation value (current).
Input: 3.8 to 20.5 mA
Configurable parameters (Default settings in bold)

Maintenance TMT181
16 Endress+Hauser
7 Maintenance
The temperature transmitter has no moving parts and requires minimal scheduled maintenance.
Sensor Checkout
To determine whether the sensor is at fault, replace it with another sensor or connect a test sensor
locally at the transmitter to test remote sensor wiring. Select any standard, off-the-shelf sensor for
use with a temperature head transmitter, or consult the factory for a replacement special sensor or
transmitter combination.
8Accessories
Configuration set for PC SETUP (SETUP
program and PC interface cable:
→Order No.: TMT181A-VP (TTL/RS232)
→Order No.: TXU10-AB (USB-Port).
ReadWin®2000, DIN rail clip (SONDTT-AF)
according to IEC 60715 for E+H temperature
head transmitters, Field housing TAF10 suitable
for E+H temperature head transmitters.
PC SETUP program can be downloaded free of
charge from the internet from the following
address:
www.readwin2000.com
Please contact your supplier when ordering (e.g.
spare parts)!
When ordering accessories or spare parts, please
state the serial number of the unit!

TMT181 Trouble-shooting
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9 Trouble-shooting
9.1 Trouble-shooting instructions
If faults occur after commissioning or during measurement always start any fault finding sequence
using the following checklists. The user is guided to the possible fault cause and its removal by
question and answer.
9.2 Application errors without messages
9.2.1 General application errors
9.2.2 Application errors for RTD connection
Pt100/Pt500/Pt1000/Ni100
Error Cause Action/cure
No communication
2 wire connection incorrect Re-connect correctly (see connection
diagram)
No power supply on the 2-wire
connection
Check the current loop
Power supply too low (< 8 V) Check power supply
Defective interface cable Check interface cable
Defective interface Check PC interface
Defective device Replace device
Error Cause Action/cure
Fault current
(≤3.6 mA or ≥21 mA)
Defective sensor Check sensor
Incorrect connection of RTD Connect cables correctly to terminal
schematic
Incorrect connection of the 2-wire cable Connect cables correctly to terminal
schematic (polarity)
No power supply on the 2-wire
connection
Check current loop; the supply should be
> 8 V
Incorrect transmitter programming
(number of wires)
Change device function ’Connection
mode’ (see chap. ’Commissioning’)
Programming Thermocouple setup (see chap.
’Commissioning’). Change to RTD
Defective device Replace device

Trouble-shooting TMT181
18 Endress+Hauser
9.2.3 Application errors for TC connection
9.3 Spare parts
Error Cause Action/cure
Measured value incorrect/
inaccurate
Faulty sensor installation Install sensor correctly
Heat conducted by sensor Take note of sensor installation point
Transmitter setup faulty (number of wires) Change device function ’Connection
mode’
Transmitter setup faulty (scale) Change scale
Incorrect RTD setup Change device function ’Sensor type’
Sensor connection (2-wire) Check sensor connection
Sensor cable resistance (2-wire) not
compensated
Compensate cable resistance
Offset incorrectly set Check offset
Error Cause Action/cure
Fault current
(≤3.6 mA or ≥21 mA)
Incorrect connection of sensor Connect cables correctly to terminal
schematic (polarity)
Defective sensor Check sensor
Setup Incorrect sensor type setup under device
function ’Sensor type’; setup correct
thermocouple
Incorrect 2-wire connection (current loop) Connect the cables correctly (see
connection diagram)
No power supply on the 2-wire
connection
Check current loop; the supply should be
> 8 V
Defective device Replace device
Error Cause Action/cure
Measured value incorrect/
inaccurate
Faulty sensor installation Install sensor correctly
Heat conducted by sensor Take note of sensor installation point
Transmitter setup faulty (scale) Change scale
Incorrect TC setup Change device function ’Sensor type’
Incorrect cold junction setup See chap. ’Commissioning’
Incorrect offset setup Check offset
Fault due to the thermo wire welded to
the well (interference voltages incurred)
Please use a sensor in which the thermo
wire is not welded
Head transmitter installation set
• For European Style installation: (8 screws, 8 springs, 8 E-
rings)
• For U. S. Style installation: (8 machine screws M4x20)
→Order No.: TMT 181A-KA

TMT181 Trouble-shooting
Endress+Hauser 19
9.4 Returns
Please follow the return Authorization Policy at the end of these instructions.
9.5 Disposal
Due to its construction, the head transmitter cannot be repaired. When disposing of the head
transmitter please take note of the local disposal regulations.
9.6 Software history
Software version / date Changes to software Changes to documentation
1.00.00 / 06.2001 Original firmware
compatible with:
•ReadWin
®2000 1.0.0 and higher
1.02.00 / 04.2003 Original firmware
compatible with:
•ReadWin
®2000 1.12.0 and higher
New:
– By measuring °F, values are stored with
higher precision
– New GOST sensors implemented

Technical Data TMT181
20 Endress+Hauser
10 Technical Data
10.0.1 Function and system design
Measuring principle Electronic monitoring and conversion of input signals in industrial temperature measurement.
Measuring system The temperature head transmitter is a two wire transmitter with an analog 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 configuration set
for PC.
10.0.2 Input
Measured variable Temperature (temperature linear transmission behavior), resistance and voltage
Measuring range The transmitter monitors different measuring ranges depending on the sensor connection and input
signals.
Type of input
Input Designation Measuring range limits Min. span
Resistance thermometer (RTD)
to IEC 751
(α= 0.00385)
to DIN 43760
(α= 0.006180)
to GOST
(α= 0.003911)
to GOST
(α= 0.004278)
Pt100
Pt500
Pt1000
Ni100
Ni500
Ni1000
Pt50
Pt100
Cu50, Cu100
-328 to 1562 °F (-200 to 850 °C)
-328 to 482 °F (-200 to 250 °C)
-328 to 482 °F (-200 to 250 °C)
-76 to 356 °F (-60 to 180 °C)
-76 to 302 °F (-60 to 150 °C)
-76 to 302 °F (-60 to 150 °C)
-328 to 2012 °F (-200 to 1100 °C)
-328 to 1562 °F (-200 to 850 °C)
-328 to 392 °F (-200 to 200 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
18 °F (10 °C)
• Connection type: 2-, 3- or 4-wire connection
• Software compensation of cable resistance possible in the 2 wire system
(0 to 20 Ω)
• Sensor cable resistance max. 11 Ωper cable in the 3 and 4 wire system
• Sensor current: ≤0.6 mA
Resistance transmitter Resistance Ω10 to 400 Ω
10 to 2000 Ω
10 Ω
100 Ω