Thermocouples

A Thermocouple is a device which 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 this junction it creates a voltage which 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 are various types of thermocouples, each with different characteristics, such as temperature range and their robustness. Each thermocouple is defined by a letter such as “K”. 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 which provides protection to prolong its life.

Thermocouples are ideal tools for temperature measurement as they are robust yet affordable solutions.

What are Thermocouples used for?

  • Thermostats
  • Hospital thermometers
  • Vehicle diagnostics
  • Boiler/heating sensors
  • Oven safety features
  • Food thermometers
  • Industrial probes/sensor

...
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Description Price Thermocouple Type Probe Diameter Probe Length Maximum Temperature Sensed Probe Material Minimum Temperature Sensed Termination Type Cable Length Standards Met Response Time
RS Stock No. 136-5871
BrandRS PRO
MYR50.75
Each
units
J - - +250°C Teflon PFA - Miniature Plug 3m EN 60584-3:2008, IEC 584-3 -
RS Stock No. 174-1677
BrandRS PRO
MYR511.71
Each
units
K 8mm 60mm +850°C Stainless Steel - Miniature Plug 1.5m - -
RS Stock No. 872-2587
BrandRS PRO
MYR167.34
Each
units
J M12 Bolt 25mm +250°C Stainless Steel - Cable 2 m Overbraided Cable IEC -
RS Stock No. 847-1116
BrandRS PRO
MYR196.75
Each
units
K 0.5mm 250mm +1100°C Stainless Steel - Cable 100mm ANSI -
RS Stock No. 159-102
BrandRS PRO
MYR123.66
Each
units
K 1.5mm 1m +1100°C Inconel 600 - Cable 100mm BS -
RS Stock No. 174-1666
BrandRS PRO
MYR213.40
Each
units
J 3mm 250mm +760°C - - Miniature Plug - IEC 584 -
RS Stock No. 872-2534
BrandRS PRO
MYR176.63
Each
units
K 4mm 40mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 891-9123
BrandRS PRO
MYR136.33
Each
units
T 3mm 500mm +400°C 316 Stainless Steel - Cable 100mm IEC -
RS Stock No. 324-1901
BrandRS PRO
MYR167.98
Each
units
J 6mm 20mm +600°C 316 Stainless Steel - Cable 2.5m RoHS Compliant 0.7 s
RS Stock No. 472-3319
Mfr. Part No.2098714
BrandFluke
MYR792.75
Each
units
K 4.8mm 203.2mm +816°C - - Miniature Plug - - -
RS Stock No. 471-1833
Mfr. Part No.80PK-24
BrandFluke
MYR755.00
Each
units
K 3.175mm 215.9mm +816°C Stainless Steel - Miniature Plug 1m - -
RS Stock No. 334-9320
Mfr. Part No.FC766F/10
MYR374.92
Each
units
K - 10m +400°C - - - 10m - -
RS Stock No. 547-7332
Mfr. Part No.D 04720
BrandCorrege
MYR874.17
Each
units
K 8mm 50mm +200°C - - Miniature Plug 2.5m IEC 0.7 s
RS Stock No. 334-9314
Mfr. Part No.FC766F/5
MYR254.92
Each
units
K 1.3mm 2.3mm +400°C - - - 5m - 3 s
RS Stock No. 465-618
Mfr. Part No.R17-2203-500-R9-1741-HT-H
BrandReckmann
MYR130.76
Each
units
K 1.4mm 500mm +900°C - - - - - -
RS Stock No. 548-8411
Mfr. Part No.901240/20-1040-3-250/000
BrandJumo
MYR198.81
Each
units
J 3mm 250mm +800°C - - Miniature Plug - - -
RS Stock No. 548-7452
Mfr. Part No.901240/20-1040-3-250/000
BrandJumo
MYR223.47
Each
units
J 3mm 250mm +800°C - - - - - -
RS Stock No. 388-0039
Mfr. Part No.RKT1-1000
BrandReckmann
MYR118.61
Each
units
L 8mm 150mm +400°C - - - - - -
RS Stock No. 410-7846
Mfr. Part No.FC766F/3
MYR194.04
Each
units
K - 3m - - - - - - -
RS Stock No. 357-9795
Mfr. Part No.901250/32-1043-1,5-200-11-2500/000
BrandJumo
MYR188.51
Each
units
K 1.5mm 200mm +1200°C - - Cable - - 0.9 (Water) s, 25 (Air) s
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Thermocouples, bayonet adaptors, compensating and extension cables and connectors.,These BS1843 products are being phased out, having been replaced with a new colour code standard BS4937 Part 30 1993 (IEC 584-3 1989 modified for international use). System Calibration is available on ...
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