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. 363-0250
BrandRS PRO
PHP733.23
Each
units
K 1/0.2mm - +250°C - -75°C - Miniature Plug 1m IEC -
RS Stock No. 285-633
BrandRS PRO
PHP5,393.78
Each
units
PT 100 6mm 200mm +450°C Stainless Steel - - Connection Head - - -
RS Stock No. 397-1264
BrandRS PRO
PHP1,734.75
Each
units
K 3mm 150mm +1100°C Stainless Steel - - Cable 1m IEC -
RS Stock No. 813-834
BrandRS PRO
PHP2,091.94
Each
units
NTC - - +70°C - - - - - - -
RS Stock No. 236-4261
BrandRS PRO
PHP3,295.63
Each
units
PT 100 6mm 150mm +250°C Stainless Steel - - Cable 1m - -
RS Stock No. 621-2170
BrandRS PRO
PHP534.67
Each
units
K 0.3mm 2m +400°C Glass Fibre - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 236-4255
BrandRS PRO
PHP3,061.69
Each
units
K 6mm - +250°C Stainless Steel - - Miniature Plug 1m IEC -
RS Stock No. 397-1236
BrandRS PRO
PHP1,616.76
Each
units
K 1.5mm 150mm +1100°C Stainless Steel - - Cable 1m IEC -
RS Stock No. 472-3319
Mfr. Part No.2098714
BrandFluke
PHP9,566.26
Each
units
K 4.8mm 203.2mm +816°C - - - Miniature Plug - - -
RS Stock No. 312-2939
BrandRS PRO
PHP10,704.68
Each
units
RTD - - +40°C - - - - - - -
RS Stock No. 506-7092
Mfr. Part No.80PR/60
BrandFluke
PHP6,705.00
Each
units
PT 1000 4.8mm 90mm +260°C Stainless Steel - - Mini Connector 1m - -
RS Stock No. 397-1832
BrandRS PRO
PHP2,630.23
Each
units
PT 100 6mm 150mm +200°C Stainless Steel - - Cable 1m - -
RS Stock No. 547-7663
BrandRS PRO
PHP8,689.20
Each
units
PT 100 8mm 50mm +250°C Stainless Steel - - Connection Head - - -
RS Stock No. 621-2316
BrandRS PRO
PHP2,001.92
Each
units
K 30 → 40mm 2m +1100°C 316 Stainless Steel - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 762-1128
BrandRS PRO
PHP1,473.11
Each
units
K 4.5mm 150mm +350°C Stainless Steel - - Cable 2m IEC -
RS Stock No. 438-8477
Mfr. Part No.NTC015WH01
BrandCarel
PHP1,240.47
Each
units
NTC, PT1000 - - - - - - - 1.5m - -
RS Stock No. 409-4920
BrandRS PRO
PHP884.21
Each
units
K 1.2mm 1m +450°C Nickel Aluminium, Nickel Chrome - - Miniature Plug 1m IEC 0.1 s
RS Stock No. 621-2158
BrandRS PRO
PHP260.10
Each (In a Pack of 5)
units
K 2mm 1m +250°C Teflon PTFE - - Cable 1m RoHS Compliant 0.7 s
RS Stock No. 362-9941
BrandRS PRO
PHP3,291.08
Each
units
PT 100 3mm 250mm +250°C Stainless Steel - - Cable 1m - -
RS Stock No. 219-4545
BrandRS PRO
PHP1,447.64
Each
units
K - 50mm +100°C - - - Miniature Plug 2m IEC -