Thermocouples

A thermocouple is essentially a temperature sensor (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 the 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 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 which insulates the wires to prolong their life.

Thermocouples are ideal tools for measurement of high temperatures and are a robust yet affordable solution.

What are Thermocouples used for?

  • Thermostats
  • Hospital thermometers
  • Vehicle diagnostics
  • Boiler/heating sensors
  • Oven safety features
  • Food thermometers
  • Industrial probe 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. 368-3894
Mfr. Part No.HEL-705-T-0-12-00
BrandHoneywell
HK$368.70
Each
units
PT 100 2.18mm 4.75mm +260°C Alumina - Lead Wire 305mm - 0.15 s
RS Stock No. 312-2939
BrandRS PRO
HK$1,555.38
Each
units
RTD - - +40°C - - - - - -
RS Stock No. 814-0147
BrandRS PRO
HK$77.98
Each
units
K 1/0.3mm 1m +350°C - - Miniature Plug 1m ANSI -
RS Stock No. 387-9786
Mfr. Part No.R9-1661-500
BrandReckmann
HK$644.32
Each
units
K 0.5mm 38mm +1100°C - - Miniature Plug - - -
RS Stock No. 334-2622
BrandRS PRO
HK$220.81
Each
units
K 5mm 5mm +750°C 316L Stainless Steel - Cable 2.5m RoHS Compliant 0.7 s
RS Stock No. 621-2372
BrandRS PRO
HK$705.96
Each
units
J 6mm 400mm +700°C 316L Stainless Steel - Connection Head - RoHS Compliant 5 s
RS Stock No. 762-1128
BrandRS PRO
HK$142.31
Each
units
K 4.5mm 150mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 397-1371
BrandRS PRO
HK$294.99
Each
units
K 6mm 150mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 290-5070
BrandRS PRO
HK$161.27
1 Bag of 5
Bag(s)
PT 100 2mm 5mm +500°C Platinum - Solder - - 0.1 s
RS Stock No. 611-8264
BrandRS PRO
HK$487.62
Each
units
PT 100 6mm 100mm +200°C Stainless Steel - Cable 2m - -
RS Stock No. 621-2142
BrandRS PRO
HK$46.79
Each
units
J 2mm - +250°C Teflon PTFE - Cable 1m RoHS Compliant 5 s
RS Stock No. 362-9799
BrandRS PRO
HK$56.07
Each
units
PT 100 2mm 10mm +500°C Platinum - Solder - - 0.1 s
RS Stock No. 621-2221
BrandRS PRO
HK$348.52
Each
units
K 6mm 175mm +1100°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 621-2417
BrandRS PRO
HK$1,216.30
Each
units
K 8mm 150mm +800°C 316L Stainless Steel - Connection Head - RoHS Compliant 20 s
RS Stock No. 814-0178
BrandRS PRO
HK$85.03
Each
units
PT 1000 2mm - +500°C - - Solder - RoHS Compliant -
RS Stock No. 338-9491
BrandRS PRO
HK$379.24
Each
units
PT 100 - - +70°C - - Cable Gland - - -
RS Stock No. 443-7967
BrandRS PRO
HK$297.21
Each
units
K 0.5mm 150mm +750°C Stainless Steel - Miniature Plug - IEC -
RS Stock No. 814-0137
BrandRS PRO
HK$71.25
Each
units
K 1/0.2mm 1m +250°C - - Miniature Plug 1m ANSI -
RS Stock No. 397-1416
BrandRS PRO
HK$770.77
Each
units
PT 100 6mm 150mm +500°C Stainless Steel - Cable 1m - -
RS Stock No. 788-7132
BrandRS PRO
HK$224.94
Each
units
PT 100 - 30mm +150°C - - - 1 m, 1mm - -
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