Advantages of Mineral Insulated Thermocouples

Instrumentation Temperature
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Advantages of Mineral Insulated Thermocouples

Rapid response

The high density of the mineral powder promotes rapid heat transfer between conductor and sheath.

Highly flexible

Mineral insulated cable is highly flexible and can be formed in to angles and shapes to ensure a perfect fit in the application. This also allows easy installation in locations where access is difficult.

Wide temperature range

Mineral insulated sensors are a popular choice as they have a very wide temperature range. Fire-proof and can be exposed to considerably higher temperatures than synthetic sheath cables.

Long life

The construction of the cable guarantees a long conductor life, due to the sheath and insulating powder protecting them they are able to withstand environmental conditions such as corrosion.

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Advantages of Mineral Insulated Thermocouples

  • Small over all dimension and high flexibility, which enable temperature measurement in location with poor accessibility.
  • Good mechanical strength.
  • Protection of the thermo element wires against oxidation, corrosion and contamination.
  • Fast thermal response.

The mineral oxides used for insulation are highly hygroscopic and open-ended cables must be effectively sealed (usually with epoxy resins) to prevent moisture take-up.

A carefully prepared mineral insulated thermocouple will normally have a high value of insulation resistance (many hundreds of mega ohms).

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