A problem about RTDs

[Bo Ma]

Hi, i custom a RTDs(Chrom/gold). I want to use NI 9217 to get the temperature. But i found the NI9217 was designed for 100ohm PT RTDs. Because now i have CDAQ-9174 chasis, i want to use C series input module, if not i have to buy other DAQ.  I don't know how to handle it. Thanks

  Bo 

[Henrik_Volkers]

Do you have a RTD (measure Ohms) or a TC (measure µV) ? (Just curious of your glod/chrom)

The 9217 can measure resistors in a range from 0-400 Ohm. 

[Bo Ma]

Hi, Henrik, i deposited Chrome(20nm)/Gold(100nm) layers on a glass slide,and then fabricated to line pattern. I tested the resistance-temperature curve, it's good linear. So i want use this as a RTDs. I could fabricate the different line, so 0-400ohm range is not a problem. My point is the temperature coefficient of this custom RTDs is different from PT 100, could i set the value of coefficient and constant A,B,C in the labview program? Thanks

 Bo 

[CWolf]

If you create an Analog Input task for RTDs, then as the type of RTD, you can select Custom.  This will allow you to specify values for A, B, and C. 

-Christina

[Bo Ma]

Thanks, Christina, It's helpful.