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Advantage and disadvantage of platinum-rhodium thermocouple

2020-04-30

Advantage and disadvantage of platinum-rhodium thermocouple introduction.
 
Advantage of platinum-rhodium thermocouple:
Platinum-rhodium thermocouple has the advantages of high accuracy, good stability, wide temperature range, long service life and high temperature upper limit in thermocouple series.Platinum-rhodium thermocouple is suitable for oxidizing and inert atmospheres, and can be used in vacuum for a short time, but not for reducing atmospheres or atmospheres containing metallic or nonmetallic vapors.An obvious advantage of the type B thermocouple is that compensation wires are not required because the thermoelectric potential is less than 3 V in the range of 0~50℃.
 
Disadvantage of platinum-rhodium thermocouple:
The shortage of platinum rhodium thermocouple is thermoelectric potential, thermoelectric potential rate is small, sensitive read low, mechanical strength under high temperature, very sensitive to pollution, precious metal materials are expensive, so a large one-time investment.
 
 platinum-rhodium thermocouple


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