Name: OTMT71
Brand: Endress+Hauser
Availability: InStock

2-wire temperature transmitter.
Single universal sensor input.
Galvanic isolation 2kV (input/output).
Application: RTD, TC, Ohm and mV.
Factory setup w/o additional
specification:Pt100, 4-wire, 0...+100oC,
presetting failure current low.
Consider additional marine certificate
requirements on application side.

Predecessor

OTMT80

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Most downloaded

Installation Instructions (EA)

Information Typenschild DIENST-T

English version - 11/2025

New version available in English

Information zur Typenschild Bestellung mit DIENST-T

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	EN
03/11/2025

Language:	English
Version:	03/11/2025
File size:	294.5 KB
File name:	DIENST_T.pdf

23 documents

Operating Instruction (BA)

BA L20221

Operating Instruction (BA)

English version - 10/2024

New version available in English

Temperature transmitter
with 4-20 mA analog output

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	EN
30/10/2024
20/02/2023

Language:	English
Version:	30/10/2024
File size:	2.7 MB
File name:	BA02276OEN_0324-00.pdf

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Short Instruction (KA)

KA L20221, L20222

Short Instruction (KA)

English version - 10/2024

New version available in English

Temperature transmitter
L20221 with 4-20 mA analog output
L20222 with HART® communication

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	EN
30/10/2024
15/11/2022

Language:	English
Version:	30/10/2024
File size:	1.2 MB
File name:	KA01630OEN_0224-00.pdf

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Ex Safety Instruction (XA)

iTEMP TMT71, TMT72 Control Drawing CSA Ex ia, Ex ec

Ex Safety Instruction (XA)

English version - 06/2023

New version available in English

Temperature transmitter
Installation notes for hazardous locations
Intrinsical safety, increased safety

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Language:	English
Version:	26/06/2023
File size:	277.7 KB
File name:	10000010382.pdf

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Ex Safety Instruction (XA)

iTEMP TMT71, TMT72 Control Drawing CSA Ex ia, Ex ec

Ex Safety Instruction (XA)

English version - 06/2023

New version available in English

Temperature transmitter
Installation Notes for hazardous locations
Intrinsical safety, increased safety

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Language:	English
Version:	26/06/2023
File size:	327 KB
File name:	10000010389.pdf

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Ex Safety Instruction (XA)

iTEMP TMT71, TMT72 Control Drawing CSA XP, DIP

Ex Safety Instruction (XA)

English version - 06/2023

New version available in English

Temperature field Transmitter
Installation notes for hazardous locations
(Explosion proof and Dust ignition proof)

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Language:	English
Version:	26/06/2023
File size:	172.2 KB
File name:	10000010390.pdf

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Special Documentation (SD)

iTEMP OTMT71, OTMT72

Special Documentation (SD)

English version - 08/2024

New version available in English

Attachment for Bluetooth radio approvals

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Language:	English
Version:	20/08/2024
File size:	101.1 KB
File name:	RadioApprovals_OTMT7x_SD03309T_0124.pdf

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PU (Publication)

Dual Label — Fact Sheet OTMT71 / F20221

PU (Publication)

English version - 11/2024

New version available in English

The Endress+Hauser Dual Label version is a great
way to personalize our products in a simple way.

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Language:	English
Version:	06/11/2024
File size:	1.9 MB
File name:	PU01529T_09_EN_01.23-OTMT71.pdf

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Manufacturer Declaration

Product family: Accessories, Configuration Kit, Ecograph, Head transmitters, Magphant, Memo-Graph, Power supply and barrier, Process displays, RTD thermometer, Soliswitch, Terminal head

Manufacturer Declaration

English version - 12/2025

New version available in English

Product root: DTT31L-, ODTT35-, OFTE20-, ORIA15-, ORIA45-, ORN22-, ORN42-, ORSG35-, ORSG45-, OTA30A-, OTID10-, OTM311-, OTMR35-, OTM
T31-, OTMT36-, OTMT71-, OTMT72-, OTMT82-, OTMT84-, OTMT85-, OTR31-, OTR35-, TMR31L-, TXU10L-
Declaration number: HE_02296_01.25
Manufacturer specification: RoHS
Additional information: China RoHS

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	EN
19/12/2025

Language:	English
Version:	19/12/2025
File size:	221.2 KB
File name:	HE_02296_01.25.pdf

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EU Declaration

Product family: Head transmitters

EU Declaration

English version - 05/2023

New version available in English

Product root: OTMT71-, OTMT72-, TMT182B-, TMT71-, TMT72-
Declaration number: EC_00695_04.23

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	EN
30/05/2023

Language:	English
Version:	30/05/2023
File size:	166 KB
File name:	EC_00695_04.23.pdf

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EU Declaration

Product family: Head transmitters

EU Declaration

English version - 04/2025

New version available in English

Product root: OTMT71-, OTMT72-, TMT71-, TMT72-
Declaration number: EC_00728_03.25

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	EN
10/04/2025

Language:	English
Version:	10/04/2025
File size:	193.5 KB
File name:	EC_00728_03.25.pdf

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60 spare parts & accessories

Terminal Head OTA30A

further parts

Order code

OTA30A-
Terminal Head OTA30D

further parts

Order code

OTA30D-
Spare parts kit sealing TA30A/TA30D

further parts

Order code

71182602
Terminal Head OTA30H

further parts

Order code

OTA30H-
Cover latch spares kit field housing

further parts

Order code

51004948
Set O-ring 74x3 75o VMQ Silicon (5 pcs.)

further parts

Order code

71600564
Fixing kit cpl. TMT8x/7x (european)

further parts

Order code

71044061
Fixing kit cpl. TMT8x/7x USA(american)

further parts

Order code

71044062
Cable gland M20x1.5 ATEX/IECEx

Order code

71638066
Cable gland NPT1/2, D4.5-8.5 IP68

Order code

51006845
Adapter DIN rail mounting

Order code

71528231
Set mounting bracket pipe W06 neutral

Order code

71274384
Set mounting bracket wall cpl. W06 neutr

Order code

71274372

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OTMT71

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Optional add-ons

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Often bought together

Accessories

Cable gland M20x1.5 ATEX/IECEx

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

See more accessories

Univ.Temp.Transmitt.4-20mA,OTMT71/L20221

Predecessor

Back

Information Typenschild DIENST-T

BA L20221

KA L20221, L20222

iTEMP TMT71, TMT72 Control Drawing CSA Ex ia, Ex ec

iTEMP TMT71, TMT72 Control Drawing CSA Ex ia, Ex ec

iTEMP TMT71, TMT72 Control Drawing CSA XP, DIP

iTEMP OTMT71, OTMT72

Dual Label — Fact Sheet OTMT71 / F20221

Product family: Accessories, Configuration Kit, Ecograph, Head transmitters, Magphant, Memo-Graph, Power supply and barrier, Process displays, RTD thermometer, Soliswitch, Terminal head

Product family: Head transmitters

Product family: Head transmitters

Back

Terminal Head OTA30A

Terminal Head OTA30D

Spare parts kit sealing TA30A/TA30D

Terminal Head OTA30H

Cover latch spares kit field housing

Set O-ring 74x3 75o VMQ Silicon (5 pcs.)

Fixing kit cpl. TMT8x/7x (european)

Fixing kit cpl. TMT8x/7x USA(american)

Cable gland M20x1.5 ATEX/IECEx

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

Adapter DIN rail mounting

Set mounting bracket pipe W06 neutral

Set mounting bracket wall cpl. W06 neutr

Choose from our suggested options

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Often bought together

My Endress+Hauser

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Univ.Temp.Transmitt.4-20mA,OTMT71/L20221

Predecessor

Back

Information Typenschild DIENST-T

BA L20221

KA L20221, L20222

iTEMP TMT71, TMT72 Control Drawing CSA Ex ia, Ex ec

iTEMP TMT71, TMT72 Control Drawing CSA Ex ia, Ex ec

iTEMP TMT71, TMT72 Control Drawing CSA XP, DIP

iTEMP OTMT71, OTMT72

Dual Label — Fact Sheet OTMT71 / F20221

Product family: Accessories, Configuration Kit, Ecograph, Head transmitters, Magphant, Memo-Graph, Power supply and barrier, Process displays, RTD thermometer, Soliswitch, Terminal head

Product family: Head transmitters

Product family: Head transmitters

Back

Terminal Head OTA30A

Terminal Head OTA30D

Spare parts kit sealing TA30A/TA30D

Terminal Head OTA30H

Cover latch spares kit field housing

Set O-ring 74x3 75o VMQ Silicon (5 pcs.)

Fixing kit cpl. TMT8x/7x (european)

Fixing kit cpl. TMT8x/7x USA(american)

Cable gland M20x1.5 ATEX/IECEx

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

Adapter DIN rail mounting

Set mounting bracket pipe W06 neutral

Set mounting bracket wall cpl. W06 neutr

Choose from our suggested options

Individual configuration

Often bought together

Products & Services

Industries

Support

Company

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