Base Metal Thermocouples

Base Metal Thermocouple Types

There are five types of base metal thermocouple all made from nickel alloys with slightly different characteristics and specifications.

Type J Thermocouple

Good in dry & reducing atmospheres.

Type K Thermocouple

The most common type of thermocouple.

Type N Thermocouple

High stability.

Type E Thermocouple

High EMF output. Suited to cryogenic use.

Type T Thermocouple

Cryogenic sensor. Copes with water present.

Special Options

All our base metal thermocouples are custom made, as such we are able to tailor your sensors exactly to your requirements. There are many options available including:

Special materials

Materials which would work best in your process are available on request.

Pressure testing/tight

Pressure testing can be conducted and pressure tight designs are available.

Special coatings

Wear and chemical resistant coatings can be applied to sensors e.g. ACT™.

Lining sheaths

Ceramic lining sheaths can be added to increase heat resistance.


Full UKAS or UKAS traceable calibration is available. AMS 2750 F to full or traceable calibration is available.

Process Fittings

Flange or compression fittings can be added such as an adjustable or welded flange on shank

Material Certificates

Material certificates are available on request.

Duplex & Triplex

Thermocouples can be supply duplex or triplex instead of simplex.


High temperature compensating cable can be supplied fitted to sensor.

Reduced tip options

Reduced hot junction for fast response or cost saving.

UK Manufactured Base Metal Thermocouples

We manufacture and design base metal thermocouple assemblies. Base metal thermocouples are made from conductors containing nickel alloys and depending on thermocouple type are suited for measuring temperatures between -270 to +1300°C. They are a rugged design, suited for tough industrial use.

Need some help?

If you are unsure exactly what you need, get in touch and we can help identify your requirements.

Contact us

We’ve made base metal thermocouples for over 25 years and today we are considered the best choice for custom built temperature sensors in the UK. We continue to apply our expertise and invest in the latest technology to provide our customers with the highest quality temperature sensors available.

Contact us with your requirements if you have an existing sensor design or are unsure what you need we’ll be able to find you get the right sensor for your process.

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