Mineral Insulated Resistance Thermometers

UK Manufactured Mineral Insulated RTDs

We manufacture and design mineral insulated resistance thermometers. Resistance thermometers are often called platinum resistance thermometers (PRTs), resistance thermometer detectors (RTDs) or simply Pt100 sensors. Mineral insulated resistance thermometers consists of an external metal sheath which protects the P100 element from damage and contamination. This outer sheath is insulated with magnesium oxide powder, tightly packed so no air is trapped inside. This not only gives great thermal conductivity but mineral insulated RTD can be bent into a variety of shapes to suit your application.

Made to your specification

There are a wide range of options for our MI resistance thermometers. They can be constructed with various diameters and materials of sheath, many different RTD types (Pt100, Pt1000 etc) and with our laser welder, mineral insulated RTD lengths are practically limitless.

Mineral Insulated Resistance Thermometer Designs

There are a variety of options when it comes to MI RTD design. Select the appropriate design below to view full specifications.

Common designs include:

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

MI Resistance Thermometer with Pot Seal & Flexible Tails

A very common robust sensor with a wide range of applications.

Mineral Insulated Resistance Thermometer with Standard Plug

The standard plug enables the temperature sensor to be easily connected and disconnected to a variety of controllers and readouts in busy and demanding environments.

Mineral Insulated Resistance Thermometer with Miniature Plug

The miniature plug enables the temperature sensor to be easily connected to a variety of hand held instruments and read outs.

Mineral Insulated Resistance Thermometer with Basic Seal

This standard design can be altered in accordance with IP65 and is very suitable for insertion into a pocket.

Mineral Insulated Resistance Thermometer With Transmitter

This design is suitable for insertion into an existing thermowell assembly.

Mineral Insulated Resistance Thermometer Insert with DIN Plate

This standard design can be altered in accordance with IP65 and is very suitable for insertion into a pocket.

MRD

Mineral Insulated Resistance Thermometer with Head

This standard design can be altered in accordance with IP65 and is very suitable for insertion into a pocket.

MI RTD

MI Resistance Thermometer with Permanently Attached Cable

This is a variation on the MI Resistance Thermometer with Pot Seal & Tails. It comes with a longer cable and is often used in original equipment manufacture.

MRA

Mineral Insulated Resistance Thermometer Insert with Block

This standard design can be altered in accordance with IP65 and is very suitable for insertion into a pocket.

MRI

Special Options

All our mineral insulated resistance thermometers are custom made, as such we are able to tailor your sensors exactly to your requirements. There are many options available including:

  • Element Options

    Pt100 B as standard with Pt100 A, 1/3,1/5,1/10 DIN, Pt 50, Pt 500, Pt 1000 and Pt 2000 available on request.

  • Calibration

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

  • Material Certificates

    Material certificates are available on request.

  • High Temperature Versions

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

  • Wire Configuration

    3 wire as standard, marked red/red/white, with 2 or 4 wires on request.

  • Process Fittings

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

  • Duplex

    Resistance thermometers can be supplied duplex instead of simplex.

  • Reduced tip options

    Reduced hot junction for fast response or cost saving.

  • Tagging

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

  • Bent to shape

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

Contact us

We’ve made mineral insulated resistance thermometers for over 15 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.