The thermocouple cold end temperature compensation

Because the thermocouple materials are usually relatively high value 'is surprisingly sees fit and use of precious metals, the temperature measurement points to the instrument are far away, in order to save the thermocouple materials, reduce costs, generally considered appropriate and repay use wire thermocouple cold end (the www。 wuxiyibiao。 com) Extended to more reliable stem indoor temperature, a petition to the meter terminals. Repay thermocouple wire electrode utility only the extension of heat, make moves to curb chamber of the cold junction of the thermocouple meter terminal, in itself does not eliminate the cold end temperature change on the influence of temperature, can't afford to pay the utility. Because of this, still need to see fit and use other modified square method to repay the cold end temperature T0 indicates influence on measuring temperature 0 ℃.