Compensation conductor should be used as a thermocouple temperature compensation method

To understand the thermocouple temperature compensation problem, must from the principle of thermocouple, thermocouple closed loop together under the understanding of total thermoelectric potential and middle temperature rule.

for selected thermocouple, the reference side at constant temperature, the overall thermoelectric emfs as a single value function of measuring the temperature. That certain thermoelectric potential corresponds to a certain temperature, and the thermocouple indexing table, reference junction are all zero. But at the scene of the application, reference end temperature differ in thousands ways, can't all constant at 0 degrees, it will generate measurement error, this is the reason why thermocouple for temperature compensation. In the practical application often called the reference end of the thermocouple cold end.

thermocouple cold junction compensation method with ice bath hair, the cold end temperature correction method, bridge method and compensation wire method. Compensation wire method is the most commonly used method, that is, extended the thermocouple cold end temperature leads to a stable place ( Usually a control room) And then adjusted by artificial cold end temperature, namely the instrument zero to room temperature, or by the instrument for automatic compensation circuit. For precious metal thermocouple extended the thermocouple is impossible, because the price is not high, just use the thermoelectric properties of base metals for extended conductor, middle temperature rule is applied the theoretical foundation of the compensating conductor. Compensation conductor does not automatically compensate the change of the thermocouple cold end temperature, only the thermocouple cold end temperature leads to a stable place, compensation by artificial and instrument. So the compensation conductor is called thermocouple extension cord.

a: hello, our company is dedicated to provide users with high-quality products and complete solutions and high quality technical services company. The main products are thermocouple wire, K type thermocouple, platinum rhodium thermocouple, compensation wire, and so on. You can through the web page to call our service hotline for more detailed product information, perfect service is our endless pursuit of the United States, welcome new and old customers trust our products of choose and buy, we will serve you wholeheartedly!