XA01402R/09/EN/06.23-00
71621679
2023-07-17

ProductsSolutions

Services

Safety Instructions
iTEMP TMT82, TMT71, TMT72
DIN rail transmitter
ATEX: Ex nA IIC Gc
Ex ec IIC Gc

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XA01402R

iTEMP TMT82, TMT71, TMT72

iTEMP TMT82, TMT71, TMT72
DIN rail transmitter
Table of contents
Associated documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Supplementary documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Certificates and declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Certificate holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety instructions: Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety instructions: Specific conditions of use . . . . . . . . . . . . . . . . . . . . . . . 4
Temperature tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical connection data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2Endress+Hauser

iTEMP TMT82, TMT71, TMT72

Associateddocumentation

XA01402R

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. TMT82

Supplementary
documentation

Explosion protection brochure: CP00021Z

Certificates anddeclarations

EU Declaration of Conformity

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

Declaration number: EC_00187
Affixing the certificate number certifies conformity with the following
standards (depending on the device version)• EN IEC 60079-0: 2018
• EN 60079-15: 2010
The EU Declaration of Conformity is available on the Internet:
www.endress.com/Downloads

Certificate holder

Endress+Hauser

Endress+Hauser Wetzer GmbH + Co. KG
Obere Wank 187484 Nesselwang, Germany

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iTEMP TMT82, TMT71, TMT72

Safetyinstructions

Hazardous area
Zone 2EPL GcNon-hazardousarea
1/+2/-

Installation in suitablehousing suitable forCategory 3

Ta

Tp678
345

Power supply
see electricalconnection data
Standard power
supplye.g. RN22-AA

e.g. TMT82

Local potential equalization
A0052254

1

Safetyinstructions:
Installation

Installation of the transmitter• 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).
• For operating the transmitter housing at an ambient temperature
under –20 °C, appropriate cables, cable entries and sealing facilities
permitted for this application must be used.
• For ambient temperatures higher than +70 °C, use suitable heatresisting cables or wires, cable entries and sealing facilities for Ta+5 K above surrounding.

LWARNING
Explosive atmospheres‣ In explosive atmospheres, do not open the device when energized.
(Ensure that the housing protection rating of IP 54 is maintained
during operation.)
Safetyinstructions:
Specificconditions of use4

• Due to the risk of discharge, the non-metallic parts of the equipment
and of all non-metallic accessories have to be protected fromelectrostatic charging during installation and operation (e.g. onlywipe with a damp cloth and do not expose to high voltage fields).
• The use of the CDI interface is not allowed in Hazardous locations.
Endress+Hauser

iTEMP TMT82, TMT71, TMT72

XA01402R

For type of protection Ex nA:• For use in the type of protection Ex nA, and for Zone 2 (EPL Gc)
application, the transmitter shall be installed completely inside anadditional enclosure, providing a degree of protection of not less than
IP54 according to EN/IEC 60079-0 and EN/IEC 60079-15. The
ambient temperature within the end use enclosure shall not exceed
the limits of the permissible ambient temperature range. Clearances,
creepage distances, and separations as defined in EN/IEC 60079-15
must be considered for the installation.
• The TMT82 does not have any surface that achieves a temperature
greater than 135 °C/100 °C/85 °C with a 5K safety factor when
operated under full load conditions at an ambient of range of 85 °C/56 °C/41 °C respectively.
• The TMT71/L20221/TMT72/L20222 does not have any surface thatachieves a temperature greater than 135 °C/100 °C/85 °C with a 5K
safety factor when operated under full load conditions at an ambientof range of 85 °C/58 °C/43 °C respectively.
• For full certification as an electrical equipment for use in EPL Gc or Dc
the tests according to IEC 60079-0:2017 section 5.2 and 5.3 have to
be carried out. Based on the test results a temperature class shall beassigned.
For type of protection Ex ec:• For use in the type of protection increased safety Ex ec, and for Zone
2 (EPL Gc) application, the transmitter shall be installed completely
inside an additional enclosure, providing a degree of protection of notless than IP 54 according to EN/IEC 60079-0 and EN/IEC 60079-7.
The ambient temperature within the end use enclosure shall not
exceed the limits of the permissible ambient temperature range.
Clearances, creepage distances, and separations as defined in EN/IEC
60079-7 must be considered for the installation.
• The TMT82 does not have any surface that achieves a temperature
greater than 135 °C/100 °C/85 °C with a 5K safety factor whenoperated under full load conditions at an ambient of range of 85 °C/56 °C/41 °C respectively.
• The TMT71/L20221/TMT72/L20222 does not have any surface that
achieves a temperature greater than 135 °C/100 °C/85 °C with a 5K
safety factor when operated under full load conditions at an ambientof range of 85 °C/58 °C/43 °C respectively.
• For full certification as an electrical equipment for use in EPL Gc or Dc
the tests according to IEC 60079-0:2017 section 5.2 and 5.3 have tobe carried out. Based on the test results a temperature class shall beassigned.

Endress+Hauser

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TemperaturetablesElectricalconnection data

iTEMP TMT82, TMT71, TMT72

TypeAmbient temperature range

TMT82–40 °C ≤ Ta ≤ +85 °C

TMT71, TMT72
L20221, L20222–50 °C ≤ Ta ≤ +85 °C

Type

Type of protection

TMT82

Ex nA IIC Gc
Ex ec IIC Gc

Power supply(terminals + and -)Ub = 12 to 42 VDC
Output: 4 to 20 mA
Current consumption: ≤ 23 mA

TMT71, TMT72
L20221, L20222

Ex nA IIC Gc
Ex ec IIC Gc

Ub = 11 to 36 VDC
Output: 4 to 20 mA
Current consumption: ≤ 23 mA

6Category

Type of protection

TypeII 3G

Ex nA IIC Gc
Ex ec IIC Gc

TMT82, TMT71, TMT72, L20221, L20222

Endress+Hauser

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www.addresses.endress.com