They should be checked frequently against a standard thermocouple . 它们经常要用标准热电偶来校对。
2.
Standard test method for thermal emf test of single thermoelement materials by comparison with a reference thermoelement of similar emf - temperature properties 与有相同电动势温度性能的标准热电偶相比较测定单个热电偶材料的热电动势的标准试验方法