Mineral Insulated Thermocouples

  • Mineral Insulated Thermocouples

The mineral-insulated thermocouple, or MI cable, is a durable industrial temperature sensor. Its sturdy construction encapsulates a matched pair of thermocouple elements inside a stainless steel or nickel-based alloy sheath. The metal sheath material is more durable than wire coverings. It is impervious to most liquids and gases and will withstand high external pressure. The sheath is available in various diameters (see simplex and duplex sheath tables). The larger sizes ensure that it can endure usage in abusive industrial environments. Benefits of Flexible Metal-Sheathed Thermocouples include:

  • Durability: The metal-sheathed construction helps to overcome bending, twisting, and compaction stresses in more difficult industrial environments.
  • Flexibility: While MI thermocouples are robust due to the mineral insulation (MgO) and metal sheath, they can be bent and shaped to fit specific installation requirements.
  • Can Survive High Temperatures: Suitable sheath materials can handle unfavorable environmental conditions such as corrosive atmospheres and extremely high temperatures.
  • Metal sheaths are impervious to most liquids and gasses
  • Sheath makes possible the ability to withstand high external pressures

Types of Flexible MI Cables

The mineral-insulated thermocouple elements are held in place by Magnesium Oxide (MgO). This enables it to be used in an environment with temperatures up to 2200°F (1200°C). The elements are of various ANSI types (J, K, T, E, N, R, and S) depending on the measured temperature range (see TC type table). Normal accuracy is achieved with standard limits material. Applications requiring high precision can be ordered with "special limits" material.
Hot end terminations on our mineral-insulated thermocouples can be chosen among grounded junction (G), ungrounded junction (U), exposed junction (E).


Mineral Insulated Thermocouples for High-Temperature Applications

Mineral-insulated thermocouples are ideal for industrial applications that require precise and reliable temperature measurement. Their high-temperature capabilities produce reliable results even in industries with extreme conditions, including aerospacepower generationprimary metals, industrial processing, OEM manufacturing, and more. With their longevity, fast response times, and resistance to mechanical stress, MI thermocouples have become indispensable tools in industrial processes that demand precise temperature monitoring and control. Additional industrial applications for mineral insulated thermocouples include:
  • Automotive manufacturing
  • Industrial furnaces
  • Research laboratories
  • Chemical processing
  • Food processing and manufacturing
  • Pharmaceutical manufacturing

Why Choose Eustis/Pyrocom for Your Metal-Sheathed MI Cables?

Are you looking for a trusted supplier for your industrial thermocouples? At EUSTIS/Pyrocom, we manufacture top-quality thermocouples, RTDs, wire & cable, and more industrial temperature measurement components. Located just north of Seattle in Lynnwood, Washington, we are dedicated to providing our customers with premium thermocouple products. Our accredited temperature calibration lab ensures precise and accurate measurements for all our RTDs and thermocouples. When you get your thermocouple supplies from EUSTIS/Pyrocom, you can count on reliable products and personalized service for your industrial temperature measurement needs.

Contact Us to Learn More About Our Mineral Insulated Thermocouples

Contact us to learn more about our metal-sheathed MI cables for industrial applications. You can also request a quote online for pricing estimates on special orders. For all your thermocouple supplies, EUSTIS/Pyrocom has you covered.