XA01736T/09/EN/06.23-00
71621170
2023-07-17

ProductsSolutions

Safety Instructions
iTEMP TMT71, TMT72
ATEX/IECEx: Ex ia IIC T6 Ga

0Services

XA01736T

iTEMP TMT71, TMT72

iTEMP TMT71, TMT72
Table of contents
Associated documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Supplementary documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Manufacturer's certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Manufacturer address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety instructions: Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety instructions: Head transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety Instructions: DIN rail transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety instructions: Field housing (optionally) . . . . . . . . . . . . . . . . . . . . . . . 6
Safety instructions: Zone 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety instructions: Specific conditions of use . . . . . . . . . . . . . . . . . . . . . . . 7
Temperature tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical connection data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2Endress+Hauser

iTEMP TMT71, TMT72

Associateddocumentation

XA01736T

All documentation is available on the Internet:
www.endress.com/Deviceviewer(enter the serial number from the nameplate).
If not yet available, a translation into EU languages can beordered.
To commission the device, please observe the Operating Instructions
pertaining to the device:www.endress.com/<product code>, e.g. iTHERM TMT7x

Supplementary
documentation

Explosion protection brochure: CP00021Z

Manufacturer's
certificates

IECEx certificate

The explosion protection brochure is available on the Internet:
www.endress.com/Downloads

Certificate number: EPS 18.0026X
Affixing the certificate number certifies conformity with the following
standards (depending on the device version)• IEC 60079-0: 2017
• IEC 60079-11: 2011
ATEX certificate
Certificate number: EPS 18 ATEX 1049 X
EU Declaration of Conformity
Declaration number: EC_00695
The EU Declaration of Conformity is available on the Internet:
www.endress.com/Downloads
UKCA certificate
Certificate number: CML 21UKEX21009X
UKCA Declaration of Conformity
Declaration number: UK_00432

Manufacturer
address

Endress+Hauser

Endress+Hauser Wetzer GmbH + Co. KG
Obere Wank 1
87484 Nesselwang, Germany

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XA01736T

iTEMP TMT71, TMT72

Safetyinstructions
Hazardous area
Zone 0, 1, 2
EPL Ga, Gb, Gc

Non-hazardous area

Certified associatedinstrinsically safe device,e.g. RN221N

e.g. RTD or TC sensor(simple apparatus)
mounted directly orremotely.
Optionally two-channel

Connection for certified
intrinsically safe display TID10

Associated intrinsicallysafe devices with max.
connection values fromthe following table(head transmitter)

A0050493

14

Installation of the head transmitter

Endress+Hauser

iTEMP TMT71, TMT72

XA01736T

Hazardous area
Zone 1, 2
EPL Gb, Gc
e.g. TMT7x withHazardous area
Zone 0, 1, 2
EPL Ga, Gb, Gc

Non-hazardous area

optional field housing

Remote mountsensor configuration:

intrinsically safe+ Associatedpower supply unit with max.
specifications- electricalfrom tables below

e.g. RTD, TC Sensor(simple apparatus)

Local potential equalisation
A0050494

Hazardous area
Zone 0, 1, 2
EPL Ga, Gb, Gc

Area
Zone 1, 2
EPL Gb, Gc

Non-hazardous area

Certified associatedintrinsically safe device,e.g RN221N+e. g. RTD or TC sensor(simple apparatus)
mounted remotely-+-

5
3

64

Associated intrinsicallysafe devices with max.
connection values fromthe following table(DIN rail transmitter)

A0050495

Endress+Hauser

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XA01736T

iTEMP TMT71, TMT72

Safetyinstructions:
Installation• Comply with the installation and safety instructions in the Operating
Instructions.
• Install the device according to the manufacturer's instructions andany other valid standards and regulations (e.g. EN/IEC 60079-14).
• When installing the unit note that the housing ingress protection
classification IP20 according to EN/IEC 60529 is upheld.
• When connecting the measurement unit with a certified circuit ofcategory “ib” into an IIC or IIB hazardous area the ignition classchanges to: Ex ib IIC or Ex ib IIB.
• In hazardous areas it is not permitted to use the CDI interface forconfiguration.

Safetyinstructions:
Head transmitter• The device (terminal head) must be connected to the potential
compensation cable.
• The certified display, type TID10, may only be installed in Zone 1/EPL
Gb or Zone 2/EPL Gc.
• The permitted ambient temperatures for display type TID10 must beobserved.

SafetyInstructions: DIN
rail transmitter

On installation please make sure that the spacing between theintrinsically safe and non-intrinsically safe circuits is at least 50 mm.

Safetyinstructions: Field
housing(optionally)• The housing of the field transmitter must be connected to thepotential matching line.
• When connecting two independent sensors make sure that thepotential equalization cables are at the same potential.
• The circuits of assembled head transmitter are isolated from its
enclosure in conformance with EN/IEC 60079-11 chapter 6.3.13.

Safetyinstructions: Zone0(These instructions are only valid if the device is installed directly inZone 0 (Category 1)/EPL Ga.)

6

• Explosive steam/air mixtures may only occur under atmosphericconditions.
• –50 °C ≤ Ta ≤ +60 °C• 0.8 bar ≤ p ≤ 1.1 bar• If no explosive mixtures are present, or if additional measures havebeen taken in accordance with EN 1127-1, the devices may also beoperated outside the atmospheric conditions in accordance with themanufacturer's specifications.
• The ambient temperature restrictions outlined in EN 1127-1 6.4.2
must be observed (see table).
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iTEMP TMT71, TMT72

XA01736T• The power circuit to be supplied must comply with Ex ia IIC type ofprotection (EN/IEC 60079-14 12.3).
• The devices can only be used in fluids if the process-wetted materials
are sufficiently resistant to such fluids.
• If the entire device is operated in Zone 0/EPL Ga, the compatibility ofthe device materials with the fluids has to be ensured. (Housing:polycarbonate (PC), potting: silicone).
• It is not permitted to mount the TID10 display in zone 0/EPL Ga.
• The temperature transmitter must be installed in such a way thatelectrostatic charge cannot occur, e.g. installation in grounded
metallic head or grounded housing.

Safetyinstructions:
Specific
conditions of use• • In hazardous areas it is not permitted to use the CDI interface of
TMT7x or L2022x for configuration.
• The head- and DIN rail-transmitter must be protected againstelectrostatic charge/discharge.

TemperaturetablesType (order option)

Temperature class

Ambient temperature
EPL Gb/Zone 1

Ambient temperature
EPL Ga/Zone 0

TMT7x-xxx1xxxx,
L2022x-xxx1xxxx
Head transmitter
without display

T6–50 °C ≤ Ta ≤ +55 °C–50 °C ≤ Ta ≤ +40 °C

T5–50 °C ≤ Ta ≤ +70 °C–50 °C ≤ Ta ≤ +60 °C

T4–50 °C ≤ Ta ≤ +85 °C–50 °C ≤ Ta ≤ +60 °C

TMT7x-xxx1xxxx,
L2022x-xxx1xxxx
Head transmitterwith display (TID10)

T6–40 °C ≤ Ta ≤ +55 °C

T5–40 °C ≤ Ta ≤ +70 °C

T4–40 °C ≤ Ta ≤ +85 °C

TMT7x-xxx1xxxx,
L2022x-xxx1xxxx
Field housing
without display

T6–50 °C ≤ Ta ≤ +55 °C

T5–50 °C ≤ Ta ≤ +70 °C

T4–50 °C ≤ Ta ≤ +85 °C

TMT7x-xxx1xxxx,
L2022x-xxx1xxxx
Field housingwith display (TID10)

T6–40 °C ≤ Ta ≤ +55 °C

T5–40 °C ≤ Ta ≤ +70 °C

T4–40 °C ≤ Ta ≤ +85 °C

TMT7x-xxx2xxxxxxxxx,
L2022x-xxx2xxxx
TMT7x-xxx3xxxxxxxxx,
L2022x-xxx3xxxx
DIN rail transmitterT6–50 °C ≤ Ta ≤ +43 °C

T5–50 °C ≤ Ta ≤ +58 °C

T4–50 °C ≤ Ta ≤ +85 °C

Endress+Hauser

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XA01736T

iTEMP TMT71, TMT72

Electricalconnection data
TypeElectrical data

TMT7x, L2022x
Order option:
TMT7x-xxx1xxxx
L2022x-xxx1xxxx(head transmitter)
TMT7x-xxx2xxxx
L2022x-xxx2xxxx
TMT7x-xxx3xxxx
L2022x-xxx3xxxx(DIN rail transmitter)

Power supply(Klemmen + und -)Ui ≤ 30 VDC
Ii ≤ 100 mA
Pi = 800 mW (head transmitter)
Pi = 700 mW (DIN rail transmitter)
Ci = negligible
Li = negligible

Sensor circuit(terminals 3 to 6)

Uo ≤ 4.3 VDC
Io ≤ 4.8 mAPo ≤ 5.2 mW

Max. connection data
Ex ia IIC
Ex ia IIB
Ex ia IIA

Lo = 50 mH
Lo = 100 mH
Lo = 100 mH

Co = 3 µF
Co = 18 µF
Co = 48 µF

Category

Type of protection (ATEX/IECEx)

Type

II1G

Ex ia IIC T6…T4 Ga

without display

II2G

Ex ia IIC T6…T4 Gb

with display

II2(1)G

Ex ia [ia Ga] IIC T6... T4 Gb

with field housing

II2(1)G

Ex ib [ia Ga] IIC T6... T4 Gb

with DIN rail housing

8

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