|Temperature measuring rang℃
|Good linearity of thermoelectric force,good stability, good oxidation resistance,it is the most widely used temperature measuring element.
|It is not applicable to reducing atmosphere,which is affected by changes of aging and the changes of short - range ordered structure.
|It has all the advantages of K-type thermocouple，the effect of short - range ordered structure change is small.
|It is not applicable to reducing atmosphere,which is affected by changes of aging.
|In the existing thermocouple, the thermoelectric force is the highest, the sensitivity is high, and the two poles are non magnetic.
|It is not applicable to reducing atmosphere, with low thermal conductivity and micro hysteresis phenomenon.
|It can be used in reducing atmosphere, and the thermoelectric force is higher than K.
|Iron is easy to rust, thermoelectric characteristics drift is large.
|It can be used in reducing atmosphere, good linearity of thermoelectric force,good low temperature characteristics,Good stability.
|Low operating temperature,the copper of positive electrode is easy to oxidize, and the thermal conduction error is large.
|It is applicable to oxidizing atmosphere, and can be used in vacuum for a short time. High precision, good stability, not affected by aging changes, oxidation resistance and chemical resistance , can be used as standard thermocouple.
|It is not applicable to reducing atmosphere（Especially H2, metal vapor）and vacuum environment，the price is high, the sensitivity is low, and the linearity of thermoelectric force is not good.
|Applicable to more than 1000 ℃, thermoelectric force is smaller,can need not compensating lead wire, oxidation resistance, chemical corrosion resistance.
|It can not be used below 600 ℃,the sensitivity is low, and the linearity of thermoelectric force is not good.