XA02114T/09/EN/03.24-00
71666561
2024-07-10

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Services

Safety Instructions
iTHERM TM111,
iTHERM TM131
TM111: Ex db IIC T1...T6 Gb
Ex tb IIIC T85 °C...T450 °C Db
TM131: Ex db IIC T1...T6 Ga/Gb
Ex ta IIIC T200 T85 °C...T200 T450 °C Da Process
Ex tb IIIC T85 °C...T450 °C Db - Enclosure

XA02114T

iTHERM TM111, iTHERM TM131

iTHERM TM111,
iTHERM TM131
Table of contents
About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Associated documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Supplementary documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Certificates and declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Manufacturer address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety instructions: Installation of protection flameproof . . . . . . . . . . . . 4
Safety instructions: Installation of Dust ignition protection . . . . . . . . . . . 5
Safety instructions: Partition wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety instructions: Specific conditions of use . . . . . . . . . . . . . . . . . . . . . . . 7
Temperature tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical connection data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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iTHERM TM111, iTHERM TM131

About thisdocument

XA02114T

The document number of these Safety Instructions (XA) mustmatch the information on the nameplate.

Associateddocumentation

To commission the device, please observe the Operating Instructions
pertaining to the device:www.endress.com/<product code>, e.g. TM111

Supplementary
documentation

Explosion protection brochure: CP00021Z

Certificates anddeclarations

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

NEPSI certificate
Certificate number: GYJ24.1170X
Affixing the certificate number certifies conformity with the following
standards (depending on the device version)• GB/T 3836.1-2021• GB/T 3836.2-2021• GB/T 3836.31-2021
Please refer to NEPSI/CCC certificates for conditions of safe use.

Manufacturer
address

Endress+Hauser

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

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XA02114T

iTHERM TM111, iTHERM TM131

Safetyinstructions

E X IN E
XPPCI
RGHTI

ATMOSAT M
OSTGHTITWHENCIINE
ER E R E
PH P HWH ENVEE
ALI ALIVITIT
CUVESILO
VESI

CU

LOR

Optional field enclosure, e.g. type TMT162:
Marking thread:
NNPT1/2
M
M20x1.5

Power supply wires
to transmitter

KE K
EP E EP

Optional terminal head, type TA30H:
Marking thread:

For remoteinstallation(terminal block)
Voltage max. 10V DC
measuring current< 1 mANo marking means M20x1.5

NPT ½

G½
NPT ¾

Hazardous area
Zone 1, 2
Zone 21, 22
EPL Gb, Gc
EPL Db, Dc

Hazardous area
Zone 1, 2
TM131 Zone 21, 22
EPL Gb, Gc
EPL Db, Dc
TaProcessconnection
point

Non-hazardous area
See power supplyof transmitter:U ≤ 42 VDC
Current
consumption≤ 23 mA

Hazardous area
Zone 1, 2
Zone 21, 22
EPL Gb, Gc
EPL Db, Dc

Approved cable glandor conduit system
Ta

Approved cable glandor conduit system
Tae.g. TM131

e.g. TM111
Processconnection
point
Tp

Hazardous area
Zone 0, 1, 2
Zone 20, 21, 22
EPL Ga, Gb, Gc
EPL Da, Db, Dc

Tp
Hazardous area
Zone 1, 2
Zone 21, 22
EPL Gb, Gc
EPL Db, Dc

Hazardous area
Zone 0, 1, 2
Zone 20, 21, 22
EPL Ga, Gb, Gc
EPL Da, Db, Dc

TpA0056204

Safetyinstructions:
Installation ofprotection
flameproof4• Comply with the installation and safety instructions in the OperatingInstructions.
• Install the device according to the manufacturer's instructions andany other valid standards and regulations (e.g. EN/IEC 60079-14).
• The housing of the thermometer must be connected to the potential
matching line.

Endress+Hauser

iTHERM TM111, iTHERM TM131

XA02114T• Only the approved wire entries as specified in paragraph 10 of
IEC/EN 60079-14, paragraph 16 of IEC/EN 60079-0, paragraph 13of IEC/EN 60079-1 must be used.
• For connection through a conduit entry approved for this purpose theassociated sealing facility shall be mounted directly to the housing.
• Seal the cable entries with certified cable glands and or blanking
elements which have at least type of protection Ex db and Ex tb
suitable for Group IIC and IIIC (degree of protection IP6X).
• The maximum specified ambient temperature Ta at terminal head
not be exceeded.
• For operating the thermometer housing at an ambient temperature
under –20 °C appropriate cables and cable entries permitted for thisapplication 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.
• During operation, the cover must be screwed all the way in and thecover's safety catch must be fastened.
• The thermometer must be installed so, that even in the event of rareincidents, an ignition source due to impact or friction between theenclosure and iron/steel is excluded.

LWARNING
Explosive atmosphere‣ Do not open the electrical connection of the power supply circuitunder voltage in an explosive atmosphere.

Safetyinstructions:
Installation of
Dust ignition
protection

Endress+Hauser• 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).
• Seal the cable entries tight with certified cable which have at least
type of protection Ex tb suitable for Group IIIC (degree of protection
IP6X).
• In case of installation and repair apply a torque for processconnection of 50 to 70 Nm for terminal heads suffix code i = A1, A2,D1 (TA30A, TA30D).
• For assure that the temperature assembly has a degree of protectionof IP6X the user shall provide a thermowell or equivalent component
at the process side
• The housing of the thermometer must be connected to the potential
matching line.
• For ambient temperatures higher than +70 °C, use suitable heatresisting cables or wires, cable entries and sealing facilities for Ta+5 K above surrounding.

5XA02114T

iTHERM TM111, iTHERM TM131LWARNING
Explosive atmosphere‣ In an explosive atmosphere, do not open the device when voltage issupplied (ensure that the IP6x housing protection is maintainedduring operation).
Safetyinstructions:
Partition wall

The provided thermowells to suffix code = e are out of material asfollows:
B1, B2, B3, B4 AISI316L/W.1.4404
C1, C2, C3, C4

AISI 316Ti/1.4571

D1, D2

Hastelloy® C-276

E1, E2

Alloy 600

F1, F2AISI316/W.1.4401

G1AISI446/W.1.4762

H1AISI321/ W.1.4541

I1, I2AISI 316Ti/1.4571 and Tantal

YYthe thermowell material is listed in the manufacturer’s website (CERviewer or Asset Central Viewer)

Instructions for option:
TM131-abc...
cThermometer Design:A

W/o neck, DIN43772 form 2, 3, 5, 8

• Install the thermometer in a partition wall which is in compliancewith IEC/EN 60079-26 in reference to its ultimate application.
• Use only thermowells out of corrosion resistant materials complying
with IEC/EN 60079-0 chapter 8.3 (e.g. AISI316/W.1.4401,AISI316L/W.1.4404, AISI 316Ti/1.4571…) with a wall thickness ofat least 1 mm.
• Use thermowells suitable for the process conditions.
• Providing a degree of protection of at least IP6X when assembled.

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iTHERM TM111, iTHERM TM131

Safetyinstructions:
Specific
conditions of use

XA02114T• The flameproof joints are not intended to be repaired.
• It shall be verified, taking into account the worst case process andambient temperatures,• that the temperature of the enclosure at the process connection
point does not exceed the ambient temperature range of theassembly and• the temperature of the optionally used RB**1NS union does notexceed the service temperature range of –50 to +150 °C forfollowing option:
TM131-abc...
c

Thermometer Design:

M

Nipple-union connection NPT½"

N

Nipple-union-nipple connection NPT½"• When provided with special varnishing (type TM111 suffix code i =YY, type TM131 suffix code m = YY) refer to the instructions “Safetynotes varnish XA01369T/09/A2/01.16” for guidance to minimize
the risk from electrostatic discharge.
• Temperature assemblies with flying leads (type TM111 suffix code h= 0A, type TM131 suffix code l = 0A) shall be provided with a roundtransmitter of max. 2.2 W with a main diameter not exceeding
45 mm and a sensor signal of max 10 VDC and 1 mA.
Type TM111• Sensors with a diameter of 3 mm (suffix code b = A) shall beprotected by a thermowell.
• Sensors with other diameters (suffix code b = Y) shall be protected bya thermowell unless excluded by the product information available on
the manufacturer’s website (CER viewer or Asset Central Viewer) andthe safety instructions for optional thermocouples and RTDs
(document 10000013456).
These safety instructions show, depending on the sensor details,
when protection by a thermowell is required. The viewer on thewebsite shows the sensor details for each serial number of theassembly.
Type TM131
The sensor shall be protected by the thermowell as provided or by athermowell as specified in the instructions.

Endress+Hauser

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XA02114T

iTHERM TM111, iTHERM TM131

Sensor• As the flameproof product suitable certified cable glands or blanking
plugs for unused holes approved by ExTL according to GB/T3836.1-2021 and GB/T 3836.2-2021 with Ex marking “Ex db IIC Gb”
shall be used and correctly installed. As the dust product, suitable
certified cable glands or blanking plugs for unused holes approved by
ExTL according to GB/T 3836.31-2021 with Ex marking “Ex tb IIICDb” shall be used and correctly installed, after installation, degree ofprotection of enclosure is at least IP66/IP68 according to GB/T4208-2017. The cable glands and blanking plugs to be used shallsuitable for the product working conditions.
• Any maintenance shall be performed only when the warning of “Do
not open when energized” is observed.
• Clean the surface of this product termly when using in combustible
dust atmosphere.
• The user shall not change the configuration in order to maintain/
ensure the explosion protection performance of this product. Anychange may impair safety.
• For installation, use and maintenance of this product, the end user
shall observe the instruction manual and the following standards:
GB/T 3836.13-2021 “Explosive atmospheres- Part 13: Equipment
repair, overhaul, reclamation and modification”.
GB/T 3836.15-2017 “Explosive atmospheres- Part 15: Electricalinstallations design, selection and erection”.
GB/T 3836.16-2022 “Explosive atmospheres- Part 16: Electricalinstallations inspection and maintenance”.
GB50257-2014 “Code for construction and acceptance of electric
equipment on fire and device for explosion hazard electricalinstallation engineering”.
GB15577-2018 “Safety regulations for dust explosion prevention andprotection”

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iTHERM TM111, iTHERM TM131

XA02114T

Temperaturetables
The relation between the type, electrical connection, temperature class, maximum surface
temperature, ambient temperature range and process temperature range is shown in thefollowing table.
Temperature assemblies with RTD temperature sensors
Electricalconnection 1)

Temperature class/Maximum surface
temperature

Ambient
temperature range

Process temperature
range
Insert diameter
3 mm, 6 mm dual

Process temperature
range
Insert diameter
6 mm

Type TM111

Terminal block(1A) 2)

T6/T85 °C–50 to +70 °C–50 to +55 °C–50 to +68 °C

T5/T100 °C–50 to +80 °C–50 to +70 °C–50 to +83 °C

T4/T135 °C–50 to +120 °C–50 to +105 °C–50 to +118 °C

T3/T200 °C–50 to +120 °C–50 to +170 °C–50 to +183 °C

T2/T300 °C–50 to +120 °C–50 to +265 °C–50 to +278 °C

T1/T450 °C–50 to +120 °C–50 to +415 °C–50 to +428 °C

Type TM111 and Type TM131
Flying leads (0A) orTransmitter
TMT31 (2H, 2I)
TMT71 (2C)
TMT72 (3A)
TMT82 (3C, 3D, 3F)
TMT84 (5A)
TMT85 (4A)
TMT86 (6B, 6C)
TMT180 (2A, 2B)

T6/T85 °C–40 to +65 °C–50 to +55 °C–50 to +68 °C

T5/T100 °C–40 to +80 °C–50 to +70 °C–50 to +83 °C

T4/T135 °C–40 to +85 °C–50 to +105 °C–50 to +118 °C

T3/T200 °C–40 to +85 °C–50 to +170 °C–50 to +183 °C

T2/T300 °C–40 to +85 °C–50 to +265 °C–50 to +278 °C

T1/T450 °C–40 to +85 °C–50 to +415 °C–50 to +428 °C

Type TM131

Terminal block(1A) 2)

Transmitter
TMT142: 7A
TMT162: 2D, 2E, 2F,2G, 4B, 4C, 5B, 5C

Endress+Hauser

T6/T85 °C–50 to +70 °C–50 to +55 °C–50 to +68 °C

T5/T100 °C–50 to +80 °C–50 to +70 °C–50 to +83 °C

T4/T135 °C–50 to +90 °C–50 to +105 °C–50 to +118 °C

T3/T200 °C–50 to +90 °C–50 to +170 °C–50 to +183 °C

T2/T300 °C–50 to +90 °C–50 to +265 °C–50 to +278 °C

T1/T450 °C–50 to +90 °C–50 to +415 °C–50 to +428 °C

T6/T85 °C–40 to +55 °C–50 to +55 °C–50 to +68 °C

T5/T100 °C–40 to +70 °C–50 to +70 °C–50 to +83 °C

T4/T135 °C–40 to +80 °C–50 to +105 °C–50 to +118 °C

T3/T200 °C–40 to +80 °C–50 to +170 °C–50 to +183 °C
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XA02114T

iTHERM TM111, iTHERM TM131

Temperature assemblies with RTD temperature sensors
Electricalconnection 1)

1)
2)

Temperature class/Maximum surface
temperature

Ambient
temperature range

Process temperature
range
Insert diameter
3 mm, 6 mm dual

Process temperature
range
Insert diameter
6 mm

T2/T300 °C–40 to +80 °C–50 to +265 °C–50 to +278 °C

T1/T450 °C–40 to +80 °C–50 to +415 °C–50 to +428 °C

TM111 suffix code h, TM131 suffix code l.
in an enclosure with a blind cover; TM111 suffix code i / TM131 suffix code m = A1, D1, H1, H3.
Temperature assemblies with thermocouple temperature sensors
Electrical connection 1)

Temperature class/Maximum surface
temperature

Ambient temperature
range

Process temperature
range

Type TM111

Terminal block (1A) 2)

T6/T85 °C–50 to +70 °C–50 to +85 °C

T5/T100 °C–50 to +80 °C–50 to +100 °C

T4/T135 °C–50 to +120 °C–50 to +135 °C

T3/T200 °C–50 to +120 °C–50 to +200 °C

T2/T300 °C–50 to +120 °C–50 to +300 °C

T1/T450 °C–50 to +120 °C–50 to +450 °C

Type TM111 and Type TM131
Flying leads (0A) orTransmitter
TMT71 (2C)
TMT72 (3A)
TMT82 (3C, 3D, 3F)
TMT84 (5A)
TMT85 (4A)
TMT86 (6B, 6C)

T6/T85 °C–40 to +65 °C–50 to +85 °C

T5/T100 °C–40 to +80 °C–50 to +100 °C

T4/T135 °C–40 to +85 °C–50 to +135 °C

T3/T200 °C–40 to +85 °C–50 to +200 °C

T2/T300 °C–40 to +85 °C–50 to +300 °CT1/T450 °C–40 to +85 °C–50 to +450 °C

Type TM131

Terminal block (1A) 2)10

T6/T85 °C–50 to +70 °C–50 to +85 °C

T5/T100 °C–50 to +80 °C–50 to +100 °C

T4/T135 °C–50 to +90 °C–50 to +135 °C

T3/T200 °C–50 to +90 °C–50 to +200 °C

T2/T300 °C–50 to +90 °C–50 to +300 °C

T1/T450 °C–50 to +90 °C–50 to +450 °C

Endress+Hauser

iTHERM TM111, iTHERM TM131

XA02114T

Temperature assemblies with thermocouple temperature sensors
Temperature class/Maximum surface
temperature

Electrical connection 1)

Transmitter
TMT142: 7A
TMT162: 2D, 2E, 2F, 2G,4B, 4C, 5B, 5C

1)
2)

Ambient temperature
range

Process temperaturerange

T6/T85 °C–40 to +55 °C–50 to +85 °C

T5/T100 °C–40 to +70 °C–50 to +100 °C

T4/T135 °C–40 to +80 °C–50 to +135 °C

T3/T200 °C–40 to +80 °C–50 to +200 °C

T2/T300 °C–40 to +80 °C–50 to +300 °C

T1/T450 °C–40 to +80 °C–50 to +450 °C

TM111 suffix code h, TM131 suffix code l.
in an enclosure with a blind cover; TM111 suffix code i / TM131 suffix code m = A1, D1, H1, H3.

Electricalconnection data

Endress+Hauser

TypeElectrical data

TM111
TM131

Power supply Ub
Transmitter TMT162: max. 40 VDC, 3 W
Transmitter TMT142B: max. 36 VDC, 1 W
other Transmitter: max. 42 VDC, 23 mA
Sensor: max. 10 VDC, 1 mA

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