View our ISO 90001/2008 Certficate

General Purpose Thermocouples

Heavy Duty Magnet Thermocouple (Type 31HD)

An extremely powerful magnet makes this thermocouple sensor ideal for heavy duty applications where the surface temperature of ferrous materials needs to be measured. The sensor has a magnet strength of 20lbs and is supplied with PVC insulated leads. Available in thermocouple types K, T, J, N or E as standard with an operating temperature range of 14ºF to +212°F. Magnet Dimensions: 1" dia. x 0.53" thick.

Enquiry Form

1. Thermocouple Type

2. Wire Length


3. Optional Thermocouple Plug

4. Quantity Required

Contact Details

Company Name

Your Name



Additional Information

If your enquiry is for more than one style of sensor, please email us with your requirements or use the box below

Send Enquiry  

1 Thermocouple Type Temperature Range (continuous) Temperature Range
(short term)
K Nickel Chromium vs
Nickel Aluminium
32°F to +2010°F -290°F to +2460°F
T Copper vs Constantan -300°F to +570°F -420°F to +750°F
J Iron vs Constantan +68°F to +1290°F -290°F to +1380°F
N Nicrosil vs Nisil 32°F to +2010°F -450°F to +2370°F
E Nickel Chromium vs Constantan 32°F to +1470°F -40°F to +1650°F
Temperature ranges refer to the thermocouple type.
The temperature range of the sensor may deviate from the above,
please refer to the product description for more details