In order to accurately measure the temperature, the time constant should be selected small thermocouple. The time constant and the heat transfer coefficient is inversely proportional to the diameter, density and specific heat is proportional to the thermocouple hot end of the material, such as to reduce the time constant, in addition to increasing the heat transfer coefficient, the most effective way is to reduce the size of the hot end . Use, usually good thermal conductivity materials, thin wall, the inner diameter of the small protective casing. In the more precise temperature measurement standard thermocouple quotes, using no bare wire thermocouple protection tube, but is easy to damage the standard thermocouple thermocouple distribution, should be promptly corrected and replaced. Thermocouple input failure discrimination law: According to the wiring diagram for proper wiring instrument powered thermocouple meter display instrument first indexing number standard thermocouple prices, then display range of the instrument range, and then the next row of the measuring instrument digital display set temperature, digital display on the instrument to measure the temperature. If the exhaust temperature digital display on the instrument is not a heating element, and the display "OVER", "0000" or "000" and other conditions, indicating that the instrument input parts failure, the test should be as follows: standard thermocouple production _ Fujian standard thermocouple _ the lowest price since the instrument measuring the force provided by the Shanghai Automation Instrumentation Co., force measurement. Shanghai Automation Instrumentation Co., force measurement (www.licesh.com) (http://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! You can also access (http://www.licesh.com/supply_details_28029998.html), for more information about the company.