 
                  Specs at a glance
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                              AccuracyClass 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
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                              Response timedepending on configuration 
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                              Max. process pressure (static)depending on the configuration up to 500 bar 
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                              Operating temperature rangePT100 TF iTHERM StrongSens: 
 -50 °C ...500 °C
 (-58 °F ...932 °F)
 PT100 TF iTHERM QuickSens:
 -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)
 Typ K:
 max. 1.100 °C
 (max. 2.012 °F)
 Typ J:
 max. 800 °C
 (max. 1.472 °F)
 Typ N:
 max. 1.100 °C
 (max. 2.012 °F)
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                              Max. immersion length on requestup to 1.500,0 mm (59,06'') 
Field of application
Modular industrial RTD or TC thermometer, complete with barstock thermowell or to be used with onsite thermowell. Available with Endress+Hauser temperature transmitters for enhanced accuracy and reliability - easy customizing by choosing the outputs and communication protocols. Optionally available with Bluetooth® connectivity. Thermometer featuring latest innovations such as iTHERM QuickNeck, and temperature sensor technologies like iTHERM QuickSens and iTHERM StrongSens.
- Universal range of application 
- Measuring range: –200 to +1.100 °C (–328 to +2.012 °F) 
- Pressure range up to 500 bar (7.252 psi) 
- Vibration-resistant sensor element up to 60g 
- Improved ease of maintenance (sensor replacement without process shutdown), easy and safe recalibration of the measuring point 
Benefits
- Second process seal with failure indication offering valuable device health status information 
- iTHERM QuickSens: fastest response times of 1.5 s for optimum process control 
- iTHERM StrongSens: unsurpassed vibration resistance (> 60g) for ultimate plant safety 
- iTHERM QuickNeck: cost and time savings thanks to simple, tool-free recalibration 
- Bluetooth® connectivity (optional) 
- International certification: explosion protection according to ATEX, IECEx, CSA C/US and CCC 
Videos
Extended selection
- 
        High-end products 
- Highly functional and convenient
Technical excellence
Simplicity
 
                              - 
        Standard products 
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
- 
        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 | 
Predecessor
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                                                    Technical Information (TI)
 TI iTHERM ModuLine TM151English version - 03/2024 Innovative, highly modular and robust RTD or TC thermometer for a wide range of industrial applications EN 31/03/202420/07/202319/06/2023Language: English Version: 31/03/2024 File size: 4.3 MB File name: TI01707TEN_0324-00.pdf 
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                                                            Technical Information (TI)
 TI iTHERM ModuLine TM151Innovative, highly modular and robust RTD or TC thermometer for a wide 
 range of industrial applicationsEN 31/03/202420/07/202319/06/2023Language: English Version: 31/03/2024 File size: 4.3 MB File name: TI01707TEN_0324-00.pdf 
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                                                            Operating Instruction (BA)
 BA iTHERM ModuLine thermometerUniversal, modular RTD/TC thermometers for a wide range of industrial applications EN 04/08/202530/11/202431/08/2018Language: English Version: 04/08/2025 File size: 809.1 KB File name: BA01915TEN_0325-00.pdf 
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                                                            Short Instruction (KA)
 KA iTHERM ModuLine thermometerUniversal, modular RTD/TC thermometers for a wide range of industrial applications EN 01/04/2025Language: English Version: 01/04/2025 File size: 502.1 KB File name: KA01743TEN_0125-00.pdf 
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                                                            Ex Safety Instruction (XA)
 TM111, TM131, TM611: cCSAus XP DIP NITM111, TM131: cCSAus XP DIP NI Language: English Version: 27/01/2025 File size: 1.7 MB File name: XA01961T_04.25.pdf 
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                                                            Ex Safety Instruction (XA)
 iTHERM TM111, TM131 Control drawing CSA IS, NI, DIPThermometer 
 Installation Notes for hazardous locations
 Intrinsically safe, Nonincendive, Dust ignition proofLanguage: English Version: 17/09/2024 File size: 449.6 KB File name: XA01976TEN_05.24.pdf 
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                                                            Ex Safety Instruction (XA)
 XA iTHERM TM111, iTHERM TM112, iTHERM TM131, iTHERM TM151, iTHERM TM152ATEX, IECEx: 
 Ex ia IIC T6 Ga/Gb
 Ex ia IIIC Txxx °C Da/DbEN 26/06/202312/12/202228/03/202215/04/2019Language: English Version: 26/06/2023 File size: 583.2 KB File name: XA01817TEN_0423-00.pdf 
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                                                            Ex Safety Instruction (XA)
 XA iTHERM TM111, iTHERM TM131, iTHERM TM151Ex db IIC T6...T1 Ga/Gb 
 Ex db IIC T6...T1 Gb
 Ex ta IIIC T<sub>200</sub>85 °C...T<sub>200</sub>450 °C Da/Ex tb IIIC T85 °C...T450 °C Db
 Ex tb IIIC T85 °C...T450 °C DbEN 25/08/2025Language: English Version: 25/08/2025 File size: 674.7 KB File name: XA03634TEN_0125-00.pdf 
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                                                            Ex Safety Instruction (XA)
 XA iTHERM TM111, iTHERM TM112, iTHERM TM131, iTHERM TM151, iTHERM TM152ATEX/IECEx: 
 Ex db IIC T6 Ga/Gb
 Ex db IIC T6 Gb
 Ex ta/tb IIIC Txxx °C Da/Db
 Ex tb IIIC Txxx °C DbEN 30/06/202520/03/202427/06/202222/05/2019Language: English Version: 30/06/2025 File size: 700.7 KB File name: XA01799TEN_0425-00.pdf 
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                                                            Ex Safety Instruction (XA)
 XA iTHERM TM111, TM112, TM131, TM151, TM152, TS111, TS211, TS212Thermometers and inserts 
 Ex ia IIC T1...T6 Ga
 Ex ia IIC T1...T6 Ga/Gb
 Ex ia IIIC T<sub>200</sub>85 °C...T<sub>200
 </sub>450 °C Da/DbEN 12/07/202428/06/202327/04/202331/10/202231/07/2020Language: English Version: 12/07/2024 File size: 578 KB File name: XA02110TEN_0524-00.pdf 
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                                                            Ex Safety Instruction (XA)
 XA TRxx, TCxx, TEC420, TPx100, TSx310, iTHERM TS111/TM211/TM41x/TM1xx/TM611RTD/TC thermometers 
 ATEX:
 Ex nA IIC T6 Gc
 Ex ec IIC Txxx°C Gc
 Ex tc IIIC Txxx°C DcEN 28/07/202527/01/202520/11/202313/12/202214/03/2022Language: English Version: 28/07/2025 File size: 465.3 KB File name: XA00044REN_2225-00.pdf 
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