Mineral Insulated Thermocouples

MT 0 MI Thermocouple

APPLICATION

Mineral insulated thermocouples are used for temperature measurements between -200 until + 1,150 °C within gaseous and fluid mediums. A mineral insulated thermocouple consists out of jacket tube, thermo wires of thermo pair and magnesium oxide. The jacket material depends on the to be measured temperature: 1.4571 stainless steel up to 800 °C or 2.4816 Inconel up to 1,150 °C. Isolation of the internal wires consists out of high sealed magnesium. Thermo pair wires are standardized as isolated from the jacket. Mineral insulated thermocouples are available as single or double element.


This construction guarantees:

  • high reliability due the special protection of the inner conductor
  • fast reaction because of the high thermal conductibility of the magnesium oxide
  • high mechanical resistance due to outer metal jacket

Mineral insulated thermocouple advantages:

  • flexibility (minimum bending radius is 5x OØ of jacket wire)
  • vibration proof
  • fast reaction
  • high electric strength, as well with small dimensions
  • producible in large nominal lengths

Disadvantages:

  • insulation resistance failure with humidity penetration (hygroscopic insulation material)
  • cement pot head, 120 °C temperature max


Mineral insulated thermocouples are multifunctional. Most common application ranges are machinery and equipment constructions, polymer processing industries, ovens as well as chemical industries.

MT 0 MI Thermocouple

Clamping screws

Clamping screws are variable adjustable at the sensor tube. It is a save and sealed connection at process entry. An advantages of the clamping screws is the easy assembly and disassembly of the Temperature Sensor. Various designs in various materials and threads for different diameters are available.

M10x1 clamping screw

part# 1358666
thread M10x1
thread length 8 mm
total length ca. 33 mm
key size of
screw nut
12 mm
internal Ø 6,2 mm
sealing ring Ø 6,2 mm
material nickel
plated steel

M10x1 clamping screw

part# 1216718
thread M10x1
thread length 8 mm
total length ca. 33 mm
key size of
screw nut
14
internal Ø 6,2 mm
sealing ring Ø 6,2 mm
material stainless
steel

G 1/8" clamping screw

part# 1364567
thread G 1/8"
thread length 8 mm
totale length ca. 33 mm
key size of
screw nut
14
internal Ø 6,2 mm
sealing ring Ø 6,2 mm
material phosphated
steel

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