Specs at a glance

Accuracy

class A acc. to IEC 60751
Response time

t50 = 1 s
t90 = 2 s
Max. process pressure (static)

at 20 °C: 100 bar (1.450 psi)
Operating temperature range

PT 100:
-50 °C ...200 °C
(-58 °F ...392 °F)
Max. immersion length on request

up to 600,00 mm (23,62'')

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Field of application

With cost efficiency, optimal use of space, reliable operation, easy installation and commissioning the TMR31 fulfills the requirements of modern process measurement technology. Vibration-proof integrated thin-film sensors guarantee highest operational safety at the fastest response times.

The TMR31 compact thermometers are used to measure temperatures from -50 °C to +150 °C (-58 °F to +302 °F), or up to +200 °C (+392 °F) with neck. The most common installation locations are tanks and pipes. TMR31 with process connections for general applications.

Benefits

Small, compact design made entirely of stainless steel
Extremely short response times
Highly accurate even with short insertion lengths
4-wire, Pt100 or PC-programmable transmitter with 4 to 20 mA output
Configuration and visualization with ReadWin^® 2000 PC operating software, which is free of charge
Breakdown information in event of sensor break or sensor short-circuit, adjustable as per NAMUR NE43
Marine approval

Fundamental selection

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

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Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

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High-end products
Highly functional and convenient

Technical excellence

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Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

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Predecessor

Omnigrad T TR470
. TSM470

U.S. Style Easytemp TSM470G

Success stories

Innovative non-invasive temperature measurement for hydrogen

Since the temperature of compressed hydrogen increases with expansion during filling, temperature measurement is essential at hydrogen filling stations for safety reasons.
Read the full story
Optimized temperature control in steam power plants

Our non-invasive thermometer can be easily retrofitted to the existing pipe and integrated into the control system to enable efficient stand-by operation of a turboset.
Read the full story
Boost heat exchanger efficiency and safety

The non-invasive thermometer iTHERM SurfaceLine TM611 measures temperature accurately and fast, optimizing heat exchanger performance and efficiency.
Read the full story
LNG storage tank multipoint temperature profiling

Leak detection and cool-down monitoring with iTHERM MultiSens TMS01 multipoint temperature assembly
Read the full 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

Measuring principle

Resistance Temperature Detector
Characteristic / Application

metric style
compact temperature probe
fast response time
threaded process connection
with or without neck
Thermowell / protection tube

without (not intended to use with thermowell)
Insert / probe

pipe version, isolated wires, not flexible
Outer diameter protection tube / Insert

4,00 mm (0,16")
6,00 mm (0,24'')
Max. immersion length on request

up to 600,00 mm (23,62'')
Material protection tube/ thermowell

1.4404 (316L)
Process connection

male thread:
G1/4"
G1/2"
NPT1/4"
NPT1/2"
M14x1.5
M18x1.5
BSPT R1/2"
Tip shape

straight
Surface roughness Ra

0,8 μm (32 μin.)
Operating temperature range

PT 100:
-50 °C ...200 °C
(-58 °F ...392 °F)
Max. process pressure (static)

at 20 °C: 100 bar (1.450 psi)
Accuracy

class A acc. to IEC 60751
Response time

t50 = 1 s
t90 = 2 s
Integration head transmitter

no (4…20mA Signal)
Certification

Marine approval
UL 3111-1

Filter

Search spare parts by number in drawing

60 spare parts & accessories

Spare parts kit copper ring G1/2"

further parts

Order code

71367414
Gasket spares TA50-GB/NB/HB/PB/BB/CB/DB

further parts

Order code

60011599
Gasket spares TA50-GP/NP/HP/PP/BP/CP/DP

further parts

Order code

60011600
Compression Fitting TA50

further parts

Order code

TA50-
Configuration Kit TXU10

further parts

Order code

TXU10-
Accessories RXU10

further parts

Order code

RXU10-
Collar welded socket d6 PEEK + screw

Order code

71535690
Collar welded socket d6 PEEK w/o screw

Order code

71535691
Screw G1/2" + Sealing cone PEEK

Order code

51007599
M12 elbow plug ready for cable, IP67,PG7

Order code

71535693
Cordset 4p D18 IP69K

Order code

71217708
Cable M12x1 l=5m

Order code

51005148
Cable connector M12 IP69k 5m

Order code

71589963
Adapter Upgrade TXU10

Order code

51007657

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Optional add-ons

Please use the individual configurator to continue

Individual configuration

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Often bought together

Accessories

Collar welded socket d6 PEEK + screw

Collar welded socket d6 PEEK w/o screw

See more accessories

TMR31Compact thermometer

Metric RTD 4-20 mA compact thermometer for industrial applications

Specs at a glance

Accuracy

Response time

Max. process pressure (static)

Operating temperature range

Max. immersion length on request

Field of application

Benefits

Fundamental selection

Predecessor

Success stories

Innovative non-invasive temperature measurement for hydrogen

Optimized temperature control in steam power plants

Boost heat exchanger efficiency and safety

LNG storage tank multipoint temperature profiling

Enhanced safety in polymer production

Measuring principle

Characteristic / Application

Thermowell / protection tube

Insert / probe

Outer diameter protection tube / Insert

Max. immersion length on request

Material protection tube/ thermowell

Process connection

Tip shape

Surface roughness Ra

Operating temperature range

Max. process pressure (static)

Accuracy

Response time

Integration head transmitter

Certification

Back

Spare parts kit copper ring G1/2"

Gasket spares TA50-GB/NB/HB/PB/BB/CB/DB

Gasket spares TA50-GP/NP/HP/PP/BP/CP/DP

Compression Fitting TA50

Configuration Kit TXU10

Accessories RXU10

Collar welded socket d6 PEEK + screw

Collar welded socket d6 PEEK w/o screw

Screw G1/2" + Sealing cone PEEK

M12 elbow plug ready for cable, IP67,PG7

Cordset 4p D18 IP69K

Cable M12x1 l=5m

Cable connector M12 IP69k 5m

Adapter Upgrade TXU10

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Power Supply

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TMR31
Compact thermometer