Thermocouple used correctly

Thermocouple with its high precision, the most economic strengths and widespread use in people as usual yield career, is the most widely application scope of temperature measuring element, in order to better application of thermocouple, so we should grasp the accurate application of the thermocouple method, the following said the thermocouple matters needing attention in the application process. 1, and dividing Numbers of thermocouples required and adopted thermocouple temperature measurement instrument, request differences; 2, installation of thermocouple position shall be separated from strong electromagnetic fields, as far as possible to avoid the power the power cord, lest thermometer table other problems; 3, ensure pipe material, diameter of small coat, make sure there are plenty of strength, and to comply with the atmosphere under test conditions. Coat tube name should be clean, nominal besmirch can make the thermal resistance increase, measured temperature will be lower than the real temperature; 4, thermocouple should work under high temperature, otherwise will form a thermocouple material quantity changes, from measurement deviation increase. In high temperature measurement, to reduce the thermal inertia of thermocouple, can adopt touch bottom type or outcrop type thermocouple; 5, should often review the electrodes with coat tube can complete, if happen some thinner or jacket pipe nominal diameter corrupt serious such as picture, should be the end of the application, and change the new thermocouple. Thermocouple damaged, one end of the damage can be removed, or is the measuring end with the reference to exchange, the new welding, by check also the sustainable application. Above is that people in the process of application of thermocouple must pay attention to the five items, only to prevent the above matters, can achieve the accurate application of thermocouple.