iTEMP TMT121
DIN rail temperature transmitter

Transformation of sensor signals into stable and standardized output signals for all industries

Unsurpassed reliability, accuracy and long-term stability in critical processes over all industries. The configurable transmitter not only transfers converted signals from resistance thermometers (RTD) and thermocouples (TC), it also transfers resistance and voltage signals. The standardized output signal is a 4 to 20 mA signal. Swift and easy operation, visualization and maintenance by PC using operating software. Installation is realized on DIN rail as per IEC 60715 (housing width: 22.5 mm)

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Additional components

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Loop-powered field indicator

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RMA42
Process transmitter with control unit

Universal transmitter, loop power supply, barrier and limit switch in one device!
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RB223
Loop powered passive barrier

One or two-channel barrier for the safe separation of 4...20 mA standard signal circuits
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Benefits
High accuracy in total ambient temperature range
Fault signal on sensor break or short circuit, NAMUR NE 43 compliant
Safe operation in hazardous areas - International approvals such as ATEX Ex ia, NEPSI, FM IS, CSA IS
EMC to NAMUR NE 21, CE
Online...

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High accuracy in total ambient temperature range
Fault signal on sensor break or short circuit, NAMUR NE 43 compliant
Safe operation in hazardous areas - International approvals such as ATEX Ex ia, NEPSI, FM IS, CSA IS
EMC to NAMUR NE 21, CE
Online configuration during measurement
Galvanic isolation
Output simulation

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Field of application
PC programmable (PCP) temperature transmitter for converting various input signals into a scalable 4 to 20 mA analog output signal
Universal input for resistance thermometer (RTD), thermocouple (TC), resistance transmitter (Ω) and voltage transmitter (...

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PC programmable (PCP) temperature transmitter for converting various input signals into a scalable 4 to 20 mA analog output signal
Universal input for resistance thermometer (RTD), thermocouple (TC), resistance transmitter (Ω) and voltage transmitter (mV)
Online configuration using PC with configuration kit (PC-software ReadWin 2000 and USB-interface connection)

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Features and specifications

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Details

Measuring principle

Rail transmitter
Input

1 x RTD, TC, Ohm, mV
Output

1 x analog 4...20 mA
Auxiliary power supply

12...35 V DC (standard-version)

12...30 V DC (Ex-version)
Communication

PCP (pc-programmable)
Installation

DIN rail
Accuracy

(Pt100, -50...200 °C) <= 0,2 K

(Pt100, -58...392 °F) <= 0,4 °F
Galvanic isolation

yes
Certification

UL rec. Comp

marine approval

GOST Metrology

FM IS,NI,Class I,Div.1+2,Group ABCD

CSA IS,NI,Class I,Div.1+2,Group ABCD

ATEX II2(1)G Ex ia[ia Ga] IIC T6 Gb

ATEX II3G Ex nA IIC T6

FM+CSA IS,NI,Class I,Div.1+2,Group ABCD

CSA General Purpose

NEPSI Ex ia IIC T4-T6

NEPSI Ex nA II T4-T6

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Documents / Manuals / Software

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iTEMP TMT121 Technical Information
Universal temperature transmitter for resistance thermometers (RTD),
thermocouples, resistance and voltage transmitters, configurable via a
PC, for DIN rail mounting

Technical Information (TI)
BA156R Operating instructions for TMT 121 version 08.03
Operating Instructions for iTEMP® PCP TMT 121 Temperature DIN rail
transmitter

Operating Instruction (BA)
Operating Manuals ReadWin 2000 (GB)
Operating Manuals ReadWin 2000

Operating Instruction (BA)
ReadWin® Quick Setup
Operating Manual
ReadWin® Quick Setup Temperature
PC Software

Operating Instruction (BA)
Brief Operating Instructions Temperature transmitter iTEMP PCP DIN rail TMT121
PC programmable temperature transmitter for DIN rail mounting

Short Instruction (KA)

05/13

German , English , fr , Italian
iTEMP TMT121, TMT127, TMT128 ATEX: II2 (1)G: Ex ia [ia Ga] IIC T4... T6 Gb Safety Instructions
Safety instructions for electrical apparatus certified for use in
explosion-hazardous areas.

Ex Safety Instructions (XA)
iTEMP TMT121/127/128, TMT112, TMT122 ATEX: II 3G: Ex nA IIC T6... T4 Gc Safety Instructions
Safety instructions for electrical apparatus certified for use in
explosion-hazardous areas.

Ex Safety Instructions (XA)
Control Drawing FM iTEMP TMT121, TMT127, TMT128
Temperature transmitter iTEMP TMT121, TMT127, TMT128
Installation Notes for hazardous locations (FM approval)

Certificate FM/CSA (ZD)
Control Drawing CSA iTEMP TMT121, TMT127, TMT128
Temperature transmitter iTEMP TMT121, TMT127, TMT128
Installation Notes for hazardous locations

Certificate FM/CSA (ZD)
Mesure de température
Capteurs et transmetteurs pour les industries de process

Fields of Activities (FA)

12/19

fr
温度测量
过程工业用温度传感器和温度变送器

Fields of Activities (FA)

12/14

Chinese
Pomiar temperatury
Czujniki i przetworniki pomiarowe
do kontroli przemysłowych procesów technologicznych

Fields of Activities (FA)

10/14

Polish
Измерение температуры
Датчики температуры и преобразователи для любых
отраслей промышленности.

Fields of Activities (FA)

06/13

Russian
Misura della temperatura
Termometri e trasmettitori
per l'industria di processo

Fields of Activities (FA)

04/18

Italian
Catálogo medición temperatura
Termómetros y transmisores para la industria de proceso

Fields of Activities (FA)

04/18

Spanish
Field of activities FA Temperature measurement
Thermometers and transmitters for the process industry

Fields of Activities (FA)

03/13

English
Sıcaklık Ölçümü
Proses endüstrisi için termometreler ve transmiterler

Fields of Activities (FA)

03/13

Turkish
Temperature measurement
Thermometers and transmitters for the process industry

Fields of Activities (FA)

02/20

English
Temperaturmesstechnik
Thermometer und Transmitter für die Prozessindustrie

Fields of Activities (FA)

02/20

German
Измерение температуры
Ключевые особенности термометров Endress+Hauser для нефтегазовой отрасли

Competence Brochure (CP)

08/11

Russian
Инженерные решения по термометрии
Специальные решения по термометрии для химической и
нефтеперерабатывающей промышленности

Competence Brochure (CP)

04/10

Russian
Pump mtor monitoring with TMT121 DIN rail transmitter
Large pump motors require temperature monitoring to prevent breakdowns
and overheating

Case Studies (CS)

06/10

English
Hutschienentransmitter TMT121
Temperatur - Transmitter (2-Draht) in Hutschienenausführung mit
programmierbarem Messbereich und kundenspezifischer Linerarisierung

Tender Text

11/09

German
Transmitter TMT 121
Temperature - transmitter (2-wire) in rail mounting design with
programmable measuring range and customer specified linearization

Tender Text

03/09

English
DIN Rail Transmitter
Product Code: TMT121-
Declaration Number: HE_00454_01.17
Manufacturer Specification: RoHS

Manufacturer Declaration

English
DIN Rail Transmitter, Field transmitter, head transmitters, Process RTD Direct contact, Process RTD General purpose, Process RTD Heavy duty, Process RTD Hygienic, Process TC direct in contact, Process TC General purpose, Process TC Heavy duty
Product Code: TST310-, TSC310-, TPC100-, TMT162-, TMT142-, TMT128-, TMT127-, TMT122-, TMT121-, TMT112-, TMT111-
Declaration Number: HE_00237_04.15
Manufacturer Specification: Explosion protection, EMC

Manufacturer Declaration

Russian
DIN Rail Transmitter
Product Code: TMT112-, TMT121-, TMT122-, TMT127-, TMT128-
Declaration Number: EC_00162_01.16

EU Declaration

German , English , fr
ACCESSORIES, DIN Rail Transmitter, Field transmitter, head transmitters
Product Code: TMT127-, TMT128-, TMT142-, TMT162-, TMT180-, TMT180L-, TMT181-, TMT181L-, TMT182-, TMT182L-, TMT187-, TMT188-, TMT80-, TMT82-, TMT84-, TMT85-, OTMT127-, OTMT128-, OTMT187-, OTMT188-, OTMT80-, OTMT82-, OTMT84-, OTMT85-, TID10-, TMT111L-, TMT112-, TMT112L-, TMT121-, TMT121L-, TMT122-, TMT125-
Declaration Number: EC_00567_01.17

EU Declaration

German , English , fr
DIN Rail Transmitter
Product Code: TMT121-, TMT127-, TMT128-
Declaration Number: EC_00161_01.16

EU Declaration

German , English , fr
DIN Rail Transmitter
Product Code: TMT121-, TMT127-, TMT128-
Declaration Number: EC_00322_01.16

EU Declaration

German , English , fr
DIN Rail Transmitter, Field transmitter, head transmitters, Process RTD Heavy duty, Process TC Heavy duty
Product Code: TMT82-, TMT80-, TMT188-, TMT187-, TMT182-, TMT181-, TMT180-, TMT162R-, TMT162C-, TMT142R-, TMT142C-, TMT128-, TMT127-, TMT122-, TMT121-, TMT112-, TMT111-
Region/Country: Russia (TR CU)
Approval Agency: EAC
Approval Number: TC BY_112 11.01. TP020 003 126

Miscellaneous

Russian
DIN Rail Transmitter, Field transmitter, head transmitters, RTD-thermometer, Process TC Heavy duty, Process RTD Heavy duty, process displays, power supply and barrier, contactors / transmitters
Product Code: TMT85-, TMT84-, TMT82-, TMT80-, TMT188-, TMT187-, TMT182-, TMT181-, TMT180-, TMT162-, TMT142-, TMT128-, TMT127-, TMT125-, TMT122-, TMT121-, TMT112-, TMT111-, TTR35-, TTR31-, TMT162R-, TMT162C-, TMT142R-, TMT142C-, TMR31-, TMR35-
Region/Country: Russia (TR CU)
Approval Agency: EAC
Approval Number: TC № RU D-DE.AG95.B.00650

Miscellaneous

Russian
DIN Rail Transmitter
Product Code: TMT121-, TMT127-, TMT128-
Region/Country: China
Approval Agency: NEPSI
Protection: Ex ia IIC T6...T4 Ga/Gb

Explosion Protection

Chinese
DIN Rail Transmitter, Field transmitter, head transmitters
Product Code: TMT85-, TMT84-, TMT82-, TMT188-, TMT187-, TMT182-, TMT181-, TMT162-, TMT142-, TMT128-, TMT127-, TMT122-, TMT121-, TMT112-, TMT111-
Protection: [Ex ia Ga] IIC T6...T4 Gb, Ex d IIC T6...T4 Ga, Ex d IIC T6...T4 Ga/Gb, Ex d IIC T6...T4 Gb, Ex ia IIC T6...T4 Ga, Ex tb IIIC Txxx°C Gb

Explosion Protection

Russian
DIN Rail Transmitter
Product Code: TMT128-, TMT127-, TMT121-
Region/Country: USA
Approval Agency: FM
Category: I/1,2/ABCD
Protection: NI, IS, AEx

Explosion Protection

English
DIN Rail Transmitter
Product Code: TMT128-, TMT127-, TMT121-
Region/Country: Europe (ATEX)
Approval Agency: PTB
Category: II2(1)G
Protection: Ex ia [ia Ga] IIC T6 Gb

Explosion Protection

German , English
DIN Rail Transmitter
Product Code: TMT121-
Region/Country: USA
Approval Agency: CSA
Category: I/1,2/A,B,C,D/
Protection: IS, NI

Explosion Protection

English
DIN Rail Transmitter, head transmitters
Product Code: TMT121-, TMT127-, TMT128-
Region/Country: China
Approval Agency: NEPSI
Protection: Ex nA IIC T6...T4 Gc

Explosion Protection

Chinese
DIN Rail Transmitter, Field transmitter, head transmitters
Product Code: TMT85-, TMT84-, TMT82-, TMT80-, TMT188-, TMT187-, TMT182-, TMT181-, TMT180-, TMT162-, TMT142-, TMT128-, TMT127-, TMT125-, TMT122-, TMT121-, TMT112-, TMT111-
Region/Country: Russia
Approval Agency: Rosstandart
Approval Number: OC.C.32.004.A NO 74639

Metrology

Russian
DIN Rail Transmitter
Product Code: TMT121-, TMT122-, TMT127-, TMT128-
Region/Country: International
Approval Agency: DNVGL

Marine

English
RTD-thermometer, process displays, Memo-Graph, Field transmitter, Ecograph, contactors / transmitters, head transmitters, DIN Rail Transmitter
Product Code: TMT162-, TMT142-, RIA14-, RIA16-, RIA45-, RIA46-, RMA42-, RSG35-, RSG45-, TMR31-, TMR35-, TMT85-, TMT84-, TMT82-, TMT188-, TMT187-, TMT182-, TMT181-, TMT128-, TMT127-, TMT122-, TMT121-, TMT112-, TMT111-, TMT180-
Region/Country: Canada, USA
Approval Agency: UL

Ordinary Location Product Safety

English

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Predecessor
- TMC147
- TMT146
- TMT147
- TMT2160
- TMC108
- TMC109

Successor
- iTEMP TMT71
  
  Terminal head or DIN rail mounted temperature transmitter with universal input for RTD and thermocouple (TC) temperature assemblies. Programmable via PC or Bluetooth^®. Certified for hazardous areas.
  More information

Success stories

News
Standardized temperature measurement at DMK in Germany

Learn from this video how DMK ("Deutsches Milchkontor GmbH") in Hohenwestedt/Germany was able to reduce its cost by standardizing temperature measurement with the hygienic line iTHERM TM411.
Read the full story

News
Protection of pumps... and people

Adding a few sensors to a pump system can help make pumps run more efficiently and help discover problems before they get too serious – and, they may also save a life
Read the full story
Upcoming events
22.07.2020 - 23.07.2020

Basic WirelessHART Technology Training

You will learn how to implement WirelessHART successfully and where WirelessHART can add value to an existing plant. You will actually build a WirelessHART network with components from Endress+Hauser.

Upcoming events
07.09.2020 - 09.09.2020

Basic FOUNDATION Fieldbus Technology Training

You will learn with the help of actual hands-on tasks, how FOUNDATION Fieldbus technology works in detail. Features like control in the field are shown as well as device configuration via DTM.

Upcoming events
14.09.2020 - 18.09.2020

Certified Training for PROFIBUS DP/PA Engineer

With the help of actual hands-on tasks you will learn how PROFIBUS fieldbus technology works in detail. At the end of the course you will be able to design and commission a PROFIBUS fieldbus network.

Upcoming events
14.10.2020 - 16.10.2020

Basic FOUNDATION Fieldbus Technology Training

You will learn with the help of actual hands-on tasks, how FOUNDATION Fieldbus technology works in detail. Features like control in the field are shown as well as device configuration via DTM.

iTEMP TMT121
DIN rail temperature transmitter