Product picture of Thermometer with RTD or TC insert TM121

iTHERM ModuLine TM121
Industrial modular thermometer

Fundamental metric RTD/TC thermometer with welded thermowell for a wide range of industrial applications

TM121

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Specs at a glance

Accuracy

Class A acc. to IEC 60751
Class B acc. to IEC 60751
Class standard acc. to ASTM E230
Class 2 acc. to IEC 60584-2
Response time

t90 around 100 s
depending on configuration
Max. process pressure (static)

depending on the configuration
Operating temperature range

Basic PT100 TF:
-50 °C …200 °C
(-58 °F …392 °F)
Typ K:
max. 1.100 °C
(max. 2.012 °F)
Max. immersion length on request

up to 1.000,0 mm (39'')

See all specifications

Field of application

RTD or TC assembly characterized by basic sensor technology, application in non-hazardous areas, standard extension neck, low-cost unit. The devices are available with optional Bluetooth®-enabled head transmitters with 4 to 20 mA output or HART® communication, providing enhanced measurement accuracy and reliability compared to directly wired sensors.

Universal range of application
Application in non-hazardous areas
Measuring range: –50 to +650 °C (–58 to +1202 °F)
Pressure range up to 50 bar (725 psi)
Degree of protection: up to IP 68

Benefits

Economical, reliable measurement
User-friendly from product selection to maintenance
Wide range of process connections
Easy and safe device setup and service using Bluetooth® communication

Fundamental selection

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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Predecessor

Success stories

Optimized logistics concept for tank systems

We implemented a highly effective logistics concept at chemicals distributors Brenntag Schweizerhall AG's Basel site.
Read the full story
Tube skin temperature measurement

How thermometers can detect pipe overheating, lead to significant energy savings and increase process efficiency and product quality
Read the full story
Prevent grain dust ignition in bulk tanks & silos

How temperature profiling increases plant safety and product quality in bulk tanks and silos for food storage.
Read the full story
Self-calibrating thermometers in hygienic processes

This white paper explains how self-calibrating thermometers can be used in hygienic process engineering. It details theory and practice as well as application examples. Learn more!
Read the full story
Medical autoclaves

New sensor technology automates recalibrations to reduce risk in batch sterilization. Learn More!
Read the full story

Measuring principle

Resistance Temperature Detector
Characteristic / Application

metric style
modular temperature assembly
universal range of application
with neck
incl. thermowell / protection tube (metal)
Thermowell / protection tube

welded protection tube
Insert / probe

Basis Sensortechnologie
Outer diameter protection tube / Insert

Thermowell:
9x1,25 mm
11x2 mm
Max. immersion length on request

up to 1.000,0 mm (39'')
Material protection tube/ thermowell

316L (1.4404)
Process connection

Thread:
G1/2"
NPT1/2"
M20x1.5, M27x2, M33x2
Compression fitting:
NPT1/2", G1/2", G1"
Flansche:
DN25 DN40 B1
ASME 1" 150 RF
ASME 1" 300 RF
ASME 1 1/2" 150 RF
ASME 2" 150 RF
ASME 2" 300 RF
Tip shape

straight
Operating temperature range

Basic PT100 TF:
-50 °C …200 °C
(-58 °F …392 °F)
Typ K:
max. 1.100 °C
(max. 2.012 °F)
Max. process pressure (static)

depending on the configuration
Accuracy

Class A acc. to IEC 60751
Class B acc. to IEC 60751
Class standard acc. to ASTM E230
Class 2 acc. to IEC 60584-2
Response time

t90 around 100 s
depending on configuration
Integration head transmitter

yes (4 … 20 mA; HART)

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	EN
31/03/2024
15/06/2022
31/03/2021
15/04/2019

Language:	English
Version:	31/03/2024
File size:	2 MB
File name:	TI01455TEN_0424-00.pdf

	EN
31/03/2024
15/06/2022
31/03/2021
15/04/2019

Language:	English
Version:	31/03/2024
File size:	2 MB
File name:	TI01455TEN_0424-00.pdf

Language:	English
Version:	31/08/2018
File size:	611.3 KB
File name:	BA01915TEN_0118.pdf

Language:	Russian
Version:	28/08/2024
File size:	1.2 MB
File name:	EACKZ7500533131204163.pdf

Language:	Chinese
Version:	06/03/2020
File size:	324.8 KB
File name:	HE_01246_01.20 China RoHS TM121.pdf

	EN
31/08/2018

	EN
31/07/2020

	EN
10/05/2023
03/12/2021
01/11/2021

	EN
20/02/2024

iTHERM ModuLine TM121Industrial modular thermometer

Fundamental metric RTD/TC thermometer with welded thermowell for a wide range of industrial applications

Specs at a glance

Accuracy

Response time

Max. process pressure (static)

Operating temperature range

Max. immersion length on request

Field of application

Benefits

Fundamental selection

Predecessor

Success stories

Optimized logistics concept for tank systems

Tube skin temperature measurement

Prevent grain dust ignition in bulk tanks & silos

Self-calibrating thermometers in hygienic processes

Medical autoclaves

Measuring principle

Characteristic / Application

Thermowell / protection tube

Insert / probe

Outer diameter protection tube / Insert

Max. immersion length on request

Material protection tube/ thermowell

Process connection

Tip shape

Operating temperature range

Max. process pressure (static)

Accuracy

Response time

Integration head transmitter

Back

TI iTHERM ModuLine TM121

TI iTHERM ModuLine TM121

Modular thermometers Operating Instructions

TRxx, TCxx, TS211, iTHERM TS111, TM211, TPx100, TSx310, TM1x1, TM411, TM412

Device viewer

SD IEC 61406-1

Product family: Controller, Process RTD general purpose, Process RTD heavy duty, Process RTD hygienic, RTD thermometer

Product family: Process RTD general purpose

Product family: Process RTD general purpose

Product family: Accessories: Bar stock thermowell, Accessories: Pipe thermowell, Accessories: Inserts, Magphant, Process RTD general purpose, Process RTD hygienic, RTD thermometer

Back

Adapter M20x1.5 exter./M24x1.5 intern.VA

Cable entry M20x1.5

Cable gland NPT1/2, D4.5-8.5 IP68

Spare parts kit sealing TA30A/TA30D

Spare parts kit ring D21/di 10xgreen

Spare parts kit o-ring (silicon) 71x3

Plug M12 PA, M20, 316, IP67, NEMA6, -40...+105oC

Spare parts kit copper ring G1/2"

Spare parts kit copper ring G3/4"

Spare parts kit copper ring G1"

Spare parts kit copper ring M20x1.5

Spare parts kit gasket ring D21/d6 Viton

Spare parts kit gasket ring D21/d6 Neop.

Spare parts kit gasket ring D21/d3 Viton

Spare parts kit gasket ring D21/d3 Neop.

Term.block DIN B (42mm) 2 term. Spc 5 pc

Term.block DIN B (42mm) 3 term. 5 pc

Term.block DIN B (42mm) 4 term. 5 pc

Term.block DIN B (42mm) 6 term. 5 pc

Compression Fitting TK40

Spare Parts Kit Seal Insert TK40

Terminal Head TA20AB

Terminal Head TA30A

Terminal Head TA30EB

iTHERM ModuLine TT131

iTHERM Insert TS111

iTEMP TMT31, Transmitter 4-20mA

iTEMP TMT36, Transmitter IO-Link

iTEMP TMT71, Transmitter 4-20mA

iTEMP TMT72, Transmitter HART

Thermo-conductive paste FDA-conform 30g

Thermoconductive Paste HSC 340, 100g

RN22 active barrier

Input

Output

Power Supply

iTHERM ModuLine TM121
Industrial modular thermometer