
Specs at a glance
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Accuracy
Class AA acc. to IEC 60751
Class A acc. to IEC 60751
Class B acc. to IEC 60751
Class special or standard acc. to ASTM E230
Class 1 or 2 acc. to IEC 60584-2 -
Response time
fastest response time with thermowell t90 starting at below 10 s
depending on configuration -
Max. process pressure (static)
depending on the configuration up to 100 bar
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Operating temperature range
PT100 TF StrongSens:
-50 °C ...500 °C
(-58 °F ...932 °F)
PT100 QuickSensTF:
-50 °C …200 °C
(-58 °F …392 °F)
PT100 WW:
-200 °C ...600 °C
(-328 °F ...1.112 °F)
PT100 TF:
-50 °C ...400 °C
(-58 °F ...752 °F)
Thermoelement:
Typ K up to 1.100 °C (2.012 °F)
Typ J up to 800 °C (1.472 °F)
Typ N up to 1.100 °C (2.012 °F) -
Max. immersion length on request
up to 4.500,0 mm (177'')
Field of application
Intrinsincally safe temperature sensor (RTD or TC assembly) with manufactured thermowell for use with existing thermowell. An optional head transmitter with all common communication protocols – Bluetooth® technology inclusive – and special features like iTHERM QuickNeck for tool-free, easy recalibration, vibration-resistant and fast-response sensor and thermowell technology (iTHERM StrongSens, QuickSens) as well as hazardous area approvals ensure enhanced measurement accuracy and reliability.
Universal range of application
Measuring range: –200 to +1.100 °C (–328 to +2.012 °F)
Pressure range up to 100 bar (1450 psi)
Degree of protection: up to IP 68
Vibration-resistant sensor elements up to 60g
Improved ease of maintenance (sensor replacement without process shutdown), easy and safe recalibration of the measuring point
Benefits
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Second process barrier with failure indication offering valuable health status information
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iTHERM QuickSens: fastest response times 1.5 s for optimum process control
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iTHERM StrongSens: unsurpassed vibration resistance (> 60g) for ultimate plant safety
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iTHERM QuickNeck: cost and time savings thanks to simple, tool-free recalibration
Bluetooth® connectivity (optional)
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International certification: explosion protection according to ATEX, IECEx, CSA C/US and NEPSI
Videos
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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

Predecessor
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Technical Information (TI)
iTHERM TM131
English version - 04/2021
Trend-setting, highly modular and robust RTD or TC thermometer for a wide range of industrial applications
EN 28/02/202215/04/202115/03/202110/12/2018Language:
English
Version:
15/04/2021
File size:
4.7 MB
File name:
TI01373TEN_0321.pdf
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Technical Information (TI)
iTHERM ModuLine TM131
English version - 02/2022
Trend-setting, highly modular and robust RTD or TC thermometer for a wide range of industrial applications
EN 28/02/202215/04/202115/03/202110/12/2018Language:
English
Version:
28/02/2022
File size:
4.7 MB
File name:
TI01373TEN_0422-00.pdf
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Technical Information (TI)
iTHERM ModuLine TM131
Trend-setting, highly modular and robust RTD or TC thermometer for a wide range of industrial applications
EN 28/02/202215/04/202115/03/202110/12/2018Language:
English
Version:
28/02/2022
File size:
4.7 MB
File name:
TI01373TEN_0422-00.pdf
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Operating Instruction (BA)
Modular thermometers Operating Instructions
Universal modular thermometers with RTD or TC insert for industrial applications
EN 31/08/2018Language:
English
Version:
31/08/2018
File size:
611.3 KB
File name:
BA01915TEN_0118.pdf
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Ex Safety Instruction (XA)
iTHERM TM111, TM131
Ex d IIC T1...T6 Gb、Ex tD A20/A21 IP66/68 T*
EN 30/07/2020Language:
English
Version:
30/07/2020
File size:
628.6 KB
File name:
XA02114TEN_0120.pdf
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Ex Safety Instruction (XA)
iTHERM TM111, TM131 Control drawing CSA IS, NI, DIP
Thermometer Installation Notes for hazardous locations Intrinsically safe, Nonincendive, Dust ignition proof
EN 08/07/202114/10/2019Language:
English
Version:
08/07/2021
File size:
564.4 KB
File name:
10000010341.pdf
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Ex Safety Instruction (XA)
TM111, TM131: cCSAus XP DIP NI
TM111, TM131: cCSAus XP DIP NI
Language:
English
Version:
19/12/2022
File size:
356.1 KB
File name:
XA01961TEN_03.22.pdf
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Ex Safety Instruction (XA)
iTHERM TM111, iTHERM TM131
Safety Instructions iTHERM TM111, iTHERM TM131 EAC: 1Ех d IIC T6…T1 Gb Х Ga/Gb Ех d IIC T6…T1 Х Ех tb IIIC 85°C…450°C Db Х Ех ta/tb IIIC 85°C…450°C Da/Db Х
EN 30/08/2021Language:
English
Version:
30/08/2021
File size:
658 KB
File name:
XA02695TEN_0121.pdf
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Ex Safety Instruction (XA)
iTHERM TM111, iTHERM TM131
ATEX, IECEx: Ex ia IIC T6 Ga/Gb Ex ia IIIC Txxx °C Da/Db
EN 12/12/202228/03/202215/04/2019Language:
English
Version:
12/12/2022
File size:
582.5 KB
File name:
XA01817TEN_0322-00.pdf
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Ex Safety Instruction (XA)
iTHERM TM111, iTHERM TM131
EAC: Ga/Gb Ex ia IIC T6…T1 X Ex ia IIIC T85°C…450°C Da/Db X
EN 30/08/2021Language:
English
Version:
30/08/2021
File size:
577.4 KB
File name:
XA02696TEN_0121.pdf
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Ex Safety Instruction (XA)
TM111, TM131, TS111, TS211
Thermometers and inserts Ex ia IIC T6 Ga/Gb
EN 31/07/2020Language:
English
Version:
31/07/2020
File size:
305.7 KB
File name:
XA02110TEN_0120.pdf
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Ex Safety Instruction (XA)
TRxx, TCxx, TEC420, TS111, TM211, TM41x, TPx100, TSx310, TM1x1
RTD/TC thermometers ATEX: Ex nA IIC T6 Gc Ex tc IIIC Txxx°C Dc
EN 13/12/202214/03/202223/05/201904/08/201716/02/2015Language:
English
Version:
13/12/2022
File size:
446.4 KB
File name:
XA00044REN_1922-00.pdf
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