Mineral Insulated Thermocouples

Special Options

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

Special materials

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

Process Fittings

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


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

Duplex & Triplex

Thermocouples can be supply duplex or triplex instead of simplex.

Material Certificates

Material certificates are available on request.

Reduced tip options

Reduced hot junction for fast response or cost saving.

High Temperature Versions

High temperature options for plugs, sockets and cable can be supplied.


Your own serial, product number or other information attached to sensors via heat shrink cable or metal tags.

Thermocouple Junction

Thermocouple junctions can be insulated, exposed or grounded depending on what’s suitable for your application.

Bent to shape

MI thermocouples can be bent to any shape to fit your process or application.

UK Manufactured Mineral Insulated Thermocouples

We manufacture and design mineral insulated thermocouples. Mineral insulated thermocouples consist of an outer metal sheath which protects the thermocouple elements from damage and contamination, this sheath is malleable so mineral insulated thermocouples can be easily bent and formed into a variety of shapes to suit your application. The inner thermocouple elements are insulated with magnesium oxide powder, tightly packed so no air is trapped inside, this provides great thermal conductivity.

Wide variety in designs and uses

MI Thermocouples are very tough and can withstand up to 1250°C (depending on design and thermocouple type) making them perfect for a wide variety of industrial uses such as ovens, kilns and furnaces.

There are a wide range of options for our MI thermocouples. They can be constructed with various diameters and materials of sheath, many different thermocouple types and with our laser welder, mineral insulated thermocouple lengths are practically limitless.

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 mineral insulated thermocouples for 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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