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PtRh_(13)/Pt热电偶是一种新型热电偶,我国六十年代初开始研制,与PtRh_(10)/Pt热电偶相比,其热电动势较大,灵敏度高,是美、英、日等国广泛使用的一种标准型热电偶。国际电工委员会(IEC)也将PtRh_(13)/Pt热电偶定为七种标准型热电偶中的一种,即R型热电偶。随着我国使用PtRh_(13)/Pt热电偶的数量日增,1979年已制订颁布了工业标准(GB1598—79)。为便于国际间的技术交流和进出口设备的测温配套,近两年来,我国生产的PtRh_(13)/Pt热电偶已逐渐靠近IEC标准。为了考核它的热电动势—温度特性与IEC
PtRh_ (13) / Pt thermocouple is a new kind of thermocouple, which was developed in early 1960s in China. Compared with PtRh_ (10) / Pt thermocouple, PtRh_ (13) / Pt thermocouple has large thermoelectric emf and high sensitivity. Widely used in other countries a standard thermocouple. The International Electrotechnical Commission (IEC) also set the PtRh_ (13) / Pt thermocouple as one of seven standard thermocouples, the R-type thermocouple. With the increasing use of PtRh_ (13) / Pt thermocouples in China, industrial standards (GB1598-79) have been promulgated in 1979. In order to facilitate international technological exchanges and temperature measurement of imported and exported equipment, the PtRh_ (13) / Pt thermocouples produced in China have been gradually approaching the IEC standards in the past two years. In order to test its thermoelectromotive force - temperature characteristics and IEC