The advantages and disadvantages of platinum-rhodium thermocouple is what _ instrument1

The advantages and disadvantages of platinum-rhodium thermocouple

the first is advantages: platinum rhodium thermocouple in thermocouple series has the stability, accuracy, long service life and test your wide area, high temperature limit, etc. Suitable for oxidation and inert atmosphere, can also be short term used in vacuum, but does not apply to reducing atmosphere or containing metal or nonmetal steam atmosphere. B type thermocouple is an obvious advantage don't need a compensation for the compensation conductor, because in the range of 0 ~ 50 ℃ and internal potential less than 3 mu V.

followed by faults: platinum rhodium thermocouple is thermoelectric potential, low sensitive to read, thermoelectric potential rate is small, high temperature drop, mechanical strength is sensitive to pollution, precious metal materials is very expensive, so a one-time investment is larger, so the investment need to be careful.