Armour temperature sensor is a kind of high-temperature resistant magnesium oxide insulation material which puts the temperature measuring element inside the stainless steel sleeve after compression. It is made by integral drawing technology. The smallest size of the armored thermocouple can be made of 0.15mm diameter armored wire, and the smallest size of the armored thermal resistance can be made of 1.5mm diameter.Because of the use of high purity magnesium oxide as insulation and heat conduction medium, so the sensor and the protection sleeve has good thermal conductivity, fast response time, high accuracy, long service life and other advantages.Armoured temperature sensor due to the particularity of the production process, so has the refractory, high temperature resistant, resistant to strong vibration, under extreme conditions also can remain stable for a long time, has the flexibility, can allow five times the diameter of the bending radius, the standard is the insulation type, but the thermocouple can provide shell mold, in order to provide a faster response time.