Mineral insulated Cable is made by placing copper rods inside a circular copper tube and filling the intervening spaces with dry magnesium oxide powder. The overall assembly is then pressed between rollers to reduce its diameter and increase its length. After the cable has been packed with MgO insulation, it may be rolled under pressure to achieve the desired diameter. The outer sheath protects the internal thermocouple wire from heat, chemical or other environmental damage. The metal sheath may be covered with an additional colored plastic sheath to add in identification and to add an additional layer of protection from corrosion.

Mineral Insulated Cable is used in critical fire protection applications such as alarm circuits, fire pumps, and smoke control systems.

Fused Magnesia (derived from fusing Caustic Calcined magnesia) or Deadburned Magnesia with low iron and other specific physicochemical properties make GM’s products perfectly suitable for this application.

The insulation in MI cables does not burn, which makes it ideal for applications where fire could be catastrophic. Medical devices, power plants, and oil rigs are examples of places where installation of MI cables makes operations safer.

Because of the mineral insulation, MI cables can operate in high-temperature conditions with no loss of accuracy. This makes them ideal in kilns, firing ceramics or heat treating metals or in any high-temperature process. MI cables retain their accuracy even during and after exposure to high temperatures, so they are ideal as a thermocouple probe in these operations. In addition, for industries such as medical devices or aerospace where safety standards are strictly enforced, process deviations could result in life-threatening quality issues. MI cables are carefully calibrated and verified using NIST standards at Omega against known temperatures or certified thermometers. NIST traceable calibration ensures temperature accuracy under actual operating conditions and provides documentation of their original accuracy. To remain NIST certified, the chain of verification must be intact and the thermocouples must be recalibrated as part of a well-documented and executed quality management system.

The post Magnesium oxide in Mineral insulated cable appeared first on Meishen Technology Co.,LTD..