Automotive RTD probe

Mineral insulated RTD cable with Nickel conductors is the normal type for RTD cable for high temperature measurments up to 600C. The MI RTD cables are the base material for RTD sensors, its structure advantage with anti pollution and mechanical strength promise can be applied in the harsh environment.

We use mineral insulated cable to make mi cable probes and the probes can be assembly to different kinds of thermocouples. the specifications of thermocouple probe are from DIA0.25 to 12.7mm or 0.010 to 0.500 inch with SS,Inconel sheath,etc.

Nickel chrome wire is a kind of non-magnetic alloy of nickel and chromium, it is widely used in heating elements. The maximum operation temperature of the heating elements is related to the wire diameter, it is better to choose thicker wires, the corrosive atmospheres also have a considerable relationship with the maximum operation temperature. The surface temperature is about 100C higher than the inner normally, when the operation temperature exceeds the limit, the oxidation of heating elements itself is accelerated, the heat resistance will be reduced, which is easily deformed,collapsed and even appreas to be broken, thereby shortening the service life.

Copper nickel wire has good mechanical strength, corrosion resistance and low resistance. It is suitable to make thermal components in low-voltage electrical appliances such as thermal overload relays, low-voltage circuit breakers and household appliances. Copper nickel alloys are also the key materials for manufacturing geothermal cables.

The mineral insulated RTD cable is combined with thinfilm element,Mgo powder insulated and sheath materials,as a compact entirety. Its principle is according to the resistance changes as the temperature changes.The MI RTD cables are the base material for RTD sensors, its structure advantage with anti pollution and mechanical strength promise can be applied in the harsh environment.

Type E bare thermocouple wire develops the highest source voltage(EMF) per℃ for measuring tiny temperature shift,it is suitable in oxidizing or inert gas atmospheres up to 900℃(ASTM E230:870℃),  The composition of positive(EP) is Ni90Cr10, negative(EN) is Cu55Ni45.

Type K is the most common thermocouple conductor(≥500℃), it has a good resistance against oxidation and can be recommended for oxidizing and inert atmospheres.It can not be used in sulphurous and vacuum atmospheres directly at a high temperature,as this will have a significant impact on the EMF values. The composition of positive(KP) is Ni90Cr10, negative(KN) is Ni97Si3.

Type J thermocouple alloys is suitable for using in vacuum, oxidizing and reducing atmospheres or inert gas atmospheres. Because of high temperature oxidizing quickly for JP, the measuring temperature range is restricted. The composition of positive(JP) is Fe100, negative(JN) is Cu55Ni45.