Pt100 calibration

[larissahm]

Hello there,

I am new in Labview and I'm having to calibrate two RTD PT-100 which were already configured by another pearson. The program is reading both temperatures but I don't know how accurate they are.
I wonder if I can calibrate the temperatures directly from Labview, using the DAQ Assistant.

Can anyone help me?

[Henrik_Volkers]

Well, the conversion and calibration of RTDs is done by the definition of the custom RTD parameters of the Callendar-Van Dusen equation. See DAQmx help.

I'm not aware that the parameter extraction from calibrations points (which are needed) can be done IN the DAQ assistant. However it's just a polynominal fit.

What type (and class)  of RTDs are  you using, and what uncertaincy are you hunting for?

What range is needed?

4 wire measurement?

Type of DAQ you are using?

Finally: What sources and references do you have to calibrate your setup?

Nice would be a triplepoint-cell 🙂

Always remember: The sensor will report the temperature it feels, that could or could not be the temperature of interest 😉