thermal sensor question 1

[olinn]

I have a thermal sensor which is supposed to be Pt RTD, in a vacuum chamber. But I measured the four lead output of the sensor outside the chamber is ~6.5 Ohm in room temperature. But Pt RTD should have a ~100 Ohm resistance in room temperature. Does anybody know any RTD has this range of resistance in room temperature? Thank you!

 

[imok2]

Resistance at the boiling point 100ºC) =138.50 ohms. Resistance at ice point (0ºC) = 100.00 ohms.For more on this go here:

http://www.omega.com/temperature/Z/pdf/z054-056.pdf