Thermocouples

A thermocouple is essentially a temperature sensor (a device that measures temperature). It is made up of two wires of different metals that, when joined together, create an electrical junction. When the temperature changes at the junction it creates a voltage that can be interpreted to read the temperature. This is also known as the Seebeck effect. You can read more about these tools in our bespoke Thermocouples Guide.

Types of thermocouples

There is a wide range of thermocouples available, each with different characteristics, such as temperature range and their robustness. Each thermocouple is defined by a letter such as K-Type. Common types include J, K, L and T. The letters refer to the type of materials used and therefore the temperature they are usable at. For example, type J is iron and copper-nickel and is useable from around 0°C to 816°C, depending on other characteristics. Some thermocouples come with an additional sheath that insulate the wires to prolong their life.Thermocouples are ideal tools for the measurement of high temperatures and are a robust yet affordable solution.What are Thermocouples used for?ThermostatsHospital thermometersVehicle diagnosticsBoiler/heating sensorsOven safety featuresFood thermometersIndustrial probe sensor


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Description Price Thermocouple Type Probe Diameter Probe Length Maximum Temperature Sensed Probe Material Minimum Temperature Sensed Series Termination Type Cable Length Standards Met Response Time
RS Stock No. 824-0596
BrandRS PRO
$76.36
Each
units
K 6mm 500mm +1200°C 310 Stainless Steel - - Standard Plug - RoHS Compliant 5 s
RS Stock No. 134-8544
Mfr. Part No.TT3281
$174.30
Each
units
PT 100 6mm 350mm +150°C Stainless Steel - - M12 Connector - - 3 s
RS Stock No. 548-8635
Mfr. Part No.902020/10-402-1001-1-9-250-104/395,330 (0..100°C)
BrandJumo
$343.61
Each
units
PT 100 9mm 250mm +100°C Stainless Steel - - Connection Head - - -
RS Stock No. 804-7990
BrandRS PRO
$46.53
Each
units
K - 2m +260°C - - - Cable - IEC -
RS Stock No. 200-0603
BrandRS PRO
$64.42
Each
units
J 4mm 4mm +400°C - - - Bare Wire Tail 1m - -
RS Stock No. 123-5604
BrandRS PRO
$62.92
Each
units
PT 100 6mm 150mm +250°C Stainless Steel - - Cable 2m - -
RS Stock No. 547-7809
Mfr. Part No.PTC8/2000/SCM/VERROU D15
BrandCorrege
$84.68
Each
units
J 8mm 2m +400°C - - - Cable 2m - -
RS Stock No. 219-4488
BrandRS PRO
$40.32
Each
units
K 3mm 500mm +1100°C Inconel 600 - - Cable 100mm IEC -
RS Stock No. 174-1657
BrandRS PRO
$46.42
Each
units
PT 100 1.5mm 25mm +650°C Aluminia Ceramic (Body) - - Solder - - 0.4 s
RS Stock No. 407-1630
BrandRS PRO
$263.34
Each
units
PT 100 6mm 250mm +250°C Stainless Steel - - Connection Head - - -
RS Stock No. 787-7740
BrandRS PRO
$46.06
Each
units
K 4.5mm 150mm +1100°C Stainless Steel - - Cable 1m IEC -
RS Stock No. 344-1022
Mfr. Part No.330114-511
$199.86
Each
units
PT 100 6mm 350mm +450°C Stainless Steel - - Cable 2m - -
New
RS Stock No. 210-4357
Mfr. Part No.JS8746C-0.20
$45.29
Each
units
- - - - - - - - - - -
RS Stock No. 123-5603
BrandRS PRO
$62.29
Each
units
PT 100 6mm 125mm +250°C Stainless Steel - - Cable 2m - -
RS Stock No. 847-1129
BrandRS PRO
$61.19
Each
units
K 1mm 1m +1100°C Stainless Steel - - Cable 100mm ANSI -
RS Stock No. 872-2701
BrandRS PRO
$320.58
Each
units
PT 100 6mm 150mm +450°C Stainless Steel - - Connection Head - - -
RS Stock No. 260-1071
Mfr. Part No.902050/30-380-1003-1-5,4-27,5-114-11-2500/316,
BrandJumo
$111.34
Each
units
PT 100 5.4mm 27.5mm +200°C Stainless Steel - - Cable 2.5m - -
RS Stock No. 200-0602
BrandRS PRO
$61.64
Each
units
J 6mm 4mm +400°C - - - Bare Wire Tail 1m - -
RS Stock No. 174-1656
BrandRS PRO
$70.01
Each
units
PT 100 0.9mm 15mm +650°C Aluminia Ceramic (Body) - - Solder - - 0.4 s