Two different conductors or semiconductors connected in a closed loop thermal resistance of ordinary price, when the temperature at the junction of the two are not the same, the loop will generate thermoelectric power wholesale ordinary thermal resistance, a phenomenon known as the thermoelectric effect, also known as as the Seebeck effect. Thermoelectric potential to produce a closed loop, there are two potential composition; thermoelectric power and contact potential. Thermoelectric power refers to the potential at both ends of the same conductor due to different temperatures generated, different conductors have different electron densities, so the potential of their generation is not the same general type of heat resistance, while the contact potential definition refers to two different conductors When in contact, because of the different electron density so they produce a certain electron diffusion, electricity when they reach a certain equilibrium potential formed by the main common type thermal resistance, contact potential depends on the nature of the two different conductor materials as well as their contact temperature points. 2.2 coefficient of thermal insulation resistance check 2.2.1 Check the temperature sensing element insulation factor must be greater than 20MΩ, use a multimeter to measure the thermal resistance of the power block two pole wiring insulation resistance of the resistance of the housing, and the measured resistance values ??were greater than 20MΩ qualified. Or 250V shake table to measure the thermal resistance between each pole and resistance greater than 20MΩ. In the shake table to make measurements at both ends on both sides of the thermal resistance of the non-polar access shake table to avoid the breakdown of thermal resistance, heat damage resistance. Ordinary RTD sales force measuring instrument since ordinary thermal resistance, heat resistance, Henan Normal force measured by Shanghai Automation Instrumentation Co., Ltd .. Shanghai Automation Instrumentation Co., force measurement (www.licesh.com) is the Shanghai Zhabei District, flow meters leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Since the force measuring device leadership with the staff warmly welcome all inquiries negotiations to create the force measuring instrument since a better future.