引言铂铑——铂热电偶广泛应用于各种高温炉及其他加热设备以检测或控制温度,属贵金属材料;正确使用铂铑—铂热电偶,不但给国家节约材料和资金,并可得到准确的温度计量。一、热电偶使用时应注意的问题和误差铂铑—铂热电偶产生误差的主要原因之一是寄生电势,贵金属热电偶材料的直径都比较小(φ0.3～φ0.5㎜),在使用中如不小心,容易受到弯曲、挤压、碰伤等而产生机械 Introduction Platinum and rhodium - platinum thermocouples are widely used in a variety of high temperature furnaces and other heating equipment to detect or control the temperature, is a precious metal material; the proper use of platinum and rhodium - platinum thermocouple, not only to the country to save materials and funds, and accurate The temperature measurement. First, the use of thermocouples should pay attention to the problems and errors Platinum and rhodium - platinum thermocouple error is one of the main causes of parasitic potential, precious metal thermocouple materials are relatively small diameter (φ0.3 ~ φ0.5 mm), at If used carelessly, vulnerable to bending, squeezing, bumps, etc. produce mechanical