Cu50 thermal resistance and what is the difference between the PT100 resistance

Precision temperature range is not the same as the material price

the PT100 resistance:

platinum resistance temperature range - 200 ~ 850 ℃

metal platinum materials has the advantage of good chemical stability, high temperature long enough, easy to produce pure platinum, and because of its resistivity p ( Ω? mm2／m) Big, can use less material resistance, in addition, the temperature measurement range. Its disadvantage is that: in the reducing medium, especially at high temperature is easy to oxide from contamination, reduction of the steam out of the platinum wire brittle, and the relationship between the change of resistance with temperature.

CU50 thermal resistance:

copper resistance temperature range - 50 ~ 150 ℃

copper heat resistance of cheap, line a good degree, in - on the industry 50 - - Use more + 150 ℃ scope. Afraid of wet copper heat resistance, easy to corrode, low melting point as well.