2.3 RTD 2.3.1 visual inspection to check the overall appearance of the thermal resistance of the appearance of integrity, should complete its overall appearance, wear-resistant coating with no loss of thermal resistance, thermal resistance junction box no cracks, sealed, set screws complete. 2.4 for medium temperature pressure sleeve, metal inspection by metal chamber. Steel materials shall comply with the requirements, and should be resistant to 1.25 times the working pressure of the tightness test (within one minute shall not disclose), there should not be any impurities within the casing. RTD not only widely used in industrial temperature measurement wear thermal resistance Main, and was made standard benchmark instrument. However, due to the temperature range of his making his application subject to certain restrictions, the thermal resistance measurement principle is based on the resistance value of the conductor or semiconductor as the temperature changes and changes in the characteristics. The advantages are many, you can also remote electrical signal, high sensitivity, thermal stability and strong wear resistance distribution, interchangeability and accuracy are better, but the need for power motivation, can not be instantaneous measurements of temperature changes. Wear thermal resistance distribution, power measurement since the instrument (certified), wear thermal resistance force measured by the Shanghai Automation Instrumentation Limited. 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. In force since the instrument measuring leadership with the staff warmly welcome all inquiries negotiations to create the force measuring instrument from a better future.