Third, from the material points, the thermal resistance is a metal material, a metal material having a temperature-sensitive change, thermocouple bimetallic material, both of two different metals, due to temperature changes, at two different wire potential difference developed across. Fourth, the two sensors to detect temperature range is not the same degree of resistance generally detect temperature range 0-150 (of course you can detect negative temperature), the thermocouple can detect 0-1000 degrees C temperature range (or even higher) Therefore, the former is the thermal resistance and low temperature testing armored wholesale, which is a high temperature testing. At present, the main armored thermal resistance, thermal resistance of the material used mainly platinum, copper, nickel, etc., the use of these materials is that they are primarily ratio commonly used in temperature and resistance temperature ranges are linear relationship, here we mainly introduce platinum resistance thermometer . Platinum is a precious metal, it is very stable physical and chemical properties, especially the ability to strong resistance to oxidation, it is easy to purify, have a good process, can be made very fine platinum wire, as compared with copper, nickel and other metals, have higher resistivity armored thermal resistance price, high reproducibility, is an ideal material for thermal resistance, temperature coefficient of resistance is small drawback is that, in the reduction of media work is easy to become brittle, the price is more expensive. Wholesale armored thermal resistance, heat resistance armor, armored forces since the instrument measuring the thermal resistance provided by the Shanghai Automation Instrumentation Co. measured. Shanghai Automation Instrumentation Co., force measurement (www.licesh.com) strong, credible, in Shanghai Zhabei District, flow meters and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the force measured since the instrument into the brilliant and you work for a better future!