Measurement principle thermal resistance is temperature dependent characteristic change based on the resistance value of the conductor or semiconductor to measure temperature and temperature-related parameter. Most of the thermal resistance from the pure metal material, currently the most widely used platinum and copper, platinum RTD prices have now begun using nickel, manganese and rhodium and other materials RTD. RTD usually takes the lead passed to the computer control device or other secondary instrument resistance signals. Currently, the main material for the thermal resistance of the platinum, copper, nickel and the like, using these materials is that they are mainly in the temperature and the resistance ratio of conventional temperature ranges is a linear relationship, we here introduces the platinum resistance thermometer. Platinum is a precious metal, it's very stable physical and chemical properties, especially strong oxidation resistance of platinum RTD distribution, it is easy to purify, have good process, can be made into very fine platinum wire, with copper, nickel, etc. Compared to metal, has a higher resistivity, high reproducibility sell platinum RTD, is an ideal material for thermal resistance of platinum RTD, the disadvantage is the temperature coefficient of resistance is small, easy to work in reducing medium brittle, prices are also more expensive. Main platinum RTD, Guangxi platinum RTD, the force measuring instrument since platinum RTD measurements provided by the Shanghai Automation Instrumentation Co., Ltd. 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!