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Magnesium Oxide insulated thermocouples, commonly referred to as MgO thermocouples, are used in many process and laboratory applications. They are available in all thermocouple element types, a wide variety of sheath diameters and materials, they are rugged in nature and bendable, and their fairly high temperature ratings make MgO thermocouples a popular choice for a multitude of temperature measuring applications. The many desirable characteristics make them a good choice for general and special purpose applications.
MgO sensors are constructed by placing an element or elements into a sheath of a suitable material and size, insulating the elements from themselves and the sheath with loose filled or crushable Magnesium Oxide powder or insulators, and then swaging or drawing the filled sheath down to its final reduced size. The swaging process produces an element with highly compacted MgO insulation and provides a high dielectric strength insulation between the elements themselves and their sheath.
Measuring Range: -200 to 1250 ° C
Common Sensor Types: K,J,N,T,E
Common Diameters: Ø 3.0mm, 6.0mm, 8.0mm,1mm,1.5mm
Common Sheaths: Inconel, 321 SS, 310 SS