Name: iTHERM ModuLine TM131
Brand: Endress+Hauser
Availability: InStock

iTHERM ModuLine TM131 Industrial modular thermometer

Metric RTD/TC thermometer with protection tube for a wide range of industrial applications

TM131 industrial modular thermometer with thread

Intrinsically safe temperature sensor TM131 with dual-seal technology

Heavy-duty temperature probe – iTHERM ModuLine TM131

RTD or thermocouple thermometer TM131 with iTHERM QuickNeck

Temperature sensor with with second process barrier Dual Seal

Stainless steel version with explosion-proof (XP) terminal head

Intrinsically safe temperature probe with iTHERM QuickNeck for fast disassembly of the insert

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iTHERM ModuLine TM131 Industrial modular thermometer

Metric RTD/TC thermometer with protection tube for a wide range of industrial applications

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Benefits

Modular configuration for all applications: A wide selection of components and innovations, all combined under a single order code.
Increased efficiency: Fastest response times with QuickLink thermowell and optimal thermal coupling or iTHERM QuickSens sensor design.
Enhanced safety: Reliability in demanding applications with iTHERM StrongSens and highest vibration-resistance or Dual Seal second process barrier.
Effortless handling: iTHERM QuickNeck divisible extension neck for minimized maintenance downtime.

Services and resources

Product Support Product documentation, troubleshooting articles, device details and more.

FLEXible answers to individual needs

Current product

iTHERM ModuLine TM131 Industrial modular thermometer

High-end products
Highly functional and convenient

What is FLEX?

FLEX selections

Technical excellence

Simplicity

Fundamental selection Meet your basic measurement needs

Lean selection Handle your core processes easily

Extended selection Optimize your processes with innovative technologies

Xpert selection Master your most challenging applications

Variable

Learn more about the FLEX selections

Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

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Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

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24/7 customer portal

Personalized transaction space

Check prices and delivery times, save your favorite products, create quotes and place orders in just a few clicks and track deliveries at any time. With access to your complete order and quote history including all relevant documents you benefit from full transparency throughout the entire process.

Easy access to technical documentation

Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

My Endress+Hauser – all in one place

My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

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Selection of compatible products

RN42 active barrier

Active barrier, 1 channel for 4 to 20 mA, HART® transparent with 24 to 230 V AC/DC as well as active/passive input and output, optionally with SIL and Ex

Product picture loop-powered indicator RIA15

RIA15 process indicator

Loop-powered Ex ia process indicator as field or control panel device for 4 to 20 mA signals or HART®protocol

Loop-powered process indicator RIA14 for field installation

RIA14 process indicator

Loop-powered Ex d process indicator as field device for 4 to 20 mA signals, HART® transparent

Product picture fieldbus indicator RID14 with FOUNDATION Fieldbus™ or PROFIBUS® PA protocol

RID14 process indicator

Loop-powered Ex d process indicator as a field device for FOUNDATION Fieldbus™ or PROFIBUS® with up to 8 input channels

WirelessHART Adapter SWA70

Smart WirelessHART interface module with power supply for field devices

Spare parts and accessories

further parts

Terminal Head TA30A

further parts

Order code TA30A-

Drawing number 1

further parts

Terminal Head TA30D

further parts

Order code TA30D-

Drawing number 1

further parts

Spare parts kit sealing TA30A/TA30D

further parts

Order code 71182602

Drawing number 1

further parts

Terminal Head TA20AB

further parts

Order code TA20AB-

Drawing number 1

Spare parts and accessories

Fast-responding temperature measurement in polymerization

To meet the challenges of temperature monitoring in such critical processes, a thermowell design has been developed that responds to process changes up to five times faster than standard designs.

Read the full story

Success story

Enhanced safety in polymer production

The Ziegler-Natta process uses hazardous chemicals like titanium tetrachloride. Precise temperature measurement is crucial to prevent runaway reactions and ensure safety and efficiency.

Read the full story

Products

iTHERM ModuLine.
Modular by design. Tailored to your needs.

iTHERM ModuLine offers full flexibility for industrial temperature measurement. The modular industrial thermometers can be configured individually to meet your process requirements.

More information

Modular industrial thermometer portfolio

Brochure

eBrochure iTHERM ModuLine

Explore iTHERM ModuLine industrial thermometers and thermowells. Learn more about the technical differences between the different models and discover included Endress+Hauser innovations.

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Use the extended configuration to configure from all available options.

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Configuration details

iTHERM ModuLine TM131

Section	ID	Selected option
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CAD Drawings

Configuration support

Spare parts and accessories

further parts

Terminal Head TA30A

further parts

Order code TA30A-

Drawing number 1

further parts

Terminal Head TA30D

further parts

Order code TA30D-

Drawing number 1

further parts

Spare parts kit sealing TA30A/TA30D

further parts

Order code 71182602

Drawing number 1

further parts

Terminal Head TA20AB

further parts

Order code TA20AB-

Drawing number 1

Spare parts and accessories

Selection of compatible products

RN42 active barrier

Active barrier, 1 channel for 4 to 20 mA, HART® transparent with 24 to 230 V AC/DC as well as active/passive input and output, optionally with SIL and Ex

RIA15 process indicator

Loop-powered Ex ia process indicator as field or control panel device for 4 to 20 mA signals or HART®protocol

RIA14 process indicator

Loop-powered Ex d process indicator as field device for 4 to 20 mA signals, HART® transparent

RID14 process indicator

Loop-powered Ex d process indicator as a field device for FOUNDATION Fieldbus™ or PROFIBUS® with up to 8 input channels

WirelessHART Adapter SWA70

Smart WirelessHART interface module with power supply for field devices

Measuring principle	Resistance Temperature Detector
Characteristic / Application	metric style modular temperature assembly universal range of application suitable for hazardous areas with neck or iTHERM QuickNeck incl. thermowell / protection tube (metal) or to be installed into thermowell can be used with iTHERM StrongSens, iTHERM QuickSens insert for fast response times
Thermowell / protection tube	welded protection tube or to be used with thermowell
Insert / probe	mineral insulated (MI), flexible
Outer diameter protection tube / Insert	Thermowell: 9x1,25 mm 11x2 mm 12x2,5 mm 14x2 mm 16x3,5 1/4" SCH80 1/2" SCH80 1/2" SCH40
Max. immersion length on request	up to 4.500,0 mm (177'')
Material protection tube/ thermowell	316 (1.4401) 316L (1.4404) 316Ti (1.4571) Alloy 600 (2.4816) Alloy C276 (2.4819) Alloy 446 (1.4749) Alloy 321 (1.4541) Sheath PTFE Sheath Tantal
Process connection	Male thread: G3/8, G1/2", G3/4", G1" NPT1/2", NPT3/4", NPT 1" M14x1.5, M18x1.5, M20x1.5, M27x2, M33x2 R1/2", R3/4" Female thread: M20x1.5, M24x1.5 NPT1/2" Cap-nut: M20x1.5, G1/2", G3/4" Compression fitting: NPT1/2", G1/2", G1" Flange: DN15 PN40 B1, C DN25 PN20, PN40, PN100 B1, B2, C DN40 PN40 B1 DN50 PN40 B1 ASME 1" 150 RF ASME 1" 300 RF ASME 1 1/2" 150 RF ASME 2" 150 RF ASME 2" 300 RF
Tip shape	straight reduced tapered optimized for quick response times
Surface roughness Ra	< 0.76 μm (0.03 μin)
Operating temperature range	PT100 TF iTHERM StrongSens: -50 °C ...500 °C (-58 °F ...932 °F) PT100 TF iTHERM QuickSens: -50 °C …200 °C (-58 °F …392 °F) PT100 WW: -200 °C ...600 °C (-328 °F ...1.112 °F) PT100 TF: -50 °C ...400 °C (-58 °F ...752 °F) Typ K: max. 1.100 °C (max. 2.012 °F) Typ J: max. 800 °C (max. 1.472 °F) Typ N: max. 1.100 °C (max. 2.012 °F)
Max. process pressure (static)	depending on the configuration up to 100 bar
Accuracy	Class AA acc. to IEC 60751 Class A acc. to IEC 60751 Class B acc. to IEC 60751 Class special or standard acc. to ASTM E230 Class 1 or 2 acc. to IEC 60584-2
Response time	fastest response time with thermowell t90 starting at below 10 s depending on configuration
Integration head transmitter	yes (4 … 20 mA; HART; PROFIBUS PA; FOUNDATION FIELDBUS)
Ex - approvals	ATEX Ex ec, Ex tc ATEX IECEx Ex ta/tb, Ex ia, Ex db CSA C/US IS, NI, XP, DIP INMETRO Ex ia, Ex d, Ex tb NEPSI Ex ia, Ex d, Ex tD , Ex DB, EAC Ex d, Ex ta/tb, Ex ia UKCA Ex ia, Ex nA, Ex tc KC Ex ia IND Ex
Certification	SIL, MID, DNV/GL

iTHERM ModuLine TM131 Industrial modular thermometer

iTHERM ModuLine TM131 Industrial modular thermometer

iTHERM ModuLine TM131 Industrial modular thermometer

Product information

Selection of compatible products

Spare parts and accessories

Related content

Fast-responding temperature measurement in polymerization

Enhanced safety in polymer production

iTHERM ModuLine.
Modular by design. Tailored to your needs.

eBrochure iTHERM ModuLine

Choose from our suggested options

Spare parts and accessories

Selection of compatible products

My Endress+Hauser

Products & Services

Industries

Support

Company

iTHERM ModuLine TM131 Industrial modular thermometer

iTHERM ModuLine TM131 Industrial modular thermometer

iTHERM ModuLine TM131 Industrial modular thermometer

Product information

Selection of compatible products

Spare parts and accessories

Related content

Fast-responding temperature measurement in polymerization

Enhanced safety in polymer production

iTHERM ModuLine. Modular by design. Tailored to your needs.

eBrochure iTHERM ModuLine

Choose from our suggested options

Spare parts and accessories

Selection of compatible products

Products & Services

Industries

Support

Company

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iTHERM ModuLine.
Modular by design. Tailored to your needs.