How to update A,B,C constants for Callendar-Van Dusen equation?

[ArtB83]

Hi,

I'm developing a temperature measurements procedure in CVI with PT100 RTD and PXIe-4357. 

Please see the image attached.

How do I enter those A,B,C constants? What function should I use?

I'm using CVI2015 sp1 and CVI NI-DAQmx Library.

Best Regards,

Art

[RobertoBozzolo · Accepted solution]

By digging in DAQmx help I have found this help page that describes the theory of Callendar-Van Dusen Equation and this other one with a list of possible coefficients.

Coefficients can be set by calling DAQmxSetChanAttribute with attributes DAQmx_AI_RTD_A, DAQmx_AI_RTD_B and DAQmx_AI_RTD_C respectively.

I cannot halp you more than this since I never used these functions.

[ArtB83]

Great, Thanks for your help - found it!

Attached a file for more clarification.