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technical article
Type and structure of thermocouple
2011-8-11 9:28:52

      Type and structure of thermocouple
热电偶的种类 (1) The type of thermocouple
Generally, the thermocouples we commonly use are divided into: standard thermocouples and non-standard thermocouples. The so-called standard thermocouple refers to the thermocouple whose temperature is specified by the state, which allows errors, and has a unified standard index thermocouple, and has matching display instruments for its selection. Non-standardized thermocouples are inferior to standardized thermocouples in the scope or magnitude of use. Generally, there is no unified indexing table, and they are generally used for measurement in some special occasions.
为了保证热电偶可靠、稳定地工作,对热电偶的结构形式要求如下: (2) In order to ensure the reliable and stable operation of the thermocouple , the structural requirements of the thermocouple are as follows:
 
必须牢固焊接组成热电偶的两个热电极; The two thermal electrodes that make up the thermocouple must be firmly welded;
 
在两个热电极之间做到很好地绝缘,以防止发生短路现象; Do a good insulation between the two hot electrodes to prevent short circuit;
     
连接补偿导线与热电偶自由端的的地方要方便安全; The place where the compensation wire is connected to the free end of the thermocouple should be convenient and safe;
   
保护套管应能充分保证隔离开热电极与有害介质。 ④ The protective sleeve should be able to fully ensure that the hot electrode is separated from the harmful medium.