PRT sensor Help Please

[smartsarath2003]

prt sensor

Hai,

Can any one help me in using the Platinum Resistance Thermometer sensors Please. I tried to use PRT1000 to measure room temp with 2 decimal places. And I used the appriximate increment of 3.85 per 1 degree temp rise in reference to R0(1000ohm) to calculate temparature.
But when i compared with a digital thermometer, iam getting diffrent values most of the times. Can anu one plz explin me the proper way of calulating the temp from the measured resistance.

Thanks

 

[ronbmy]

prt sensor 1%

Will this help?...

http://www.lanzo.se/applications/pt100.html

Also look at....

**broken link removed**

which gives a calibration process in a working environment and includes a table of res/temp for PRT100 and PRT1000.