Self calibration

[Labtrainer]

Hi,

I am using the NI-9211 modules to measure voltage from a pressure transducer. A pressure transducer requires to be calibrated using a dead-weight tester so that we can obtain a linear equation which will be introduce in NI-DAQ. In other words, convert voltage to pressure. However, the reading I am getting in NI-DAQ is slightly different from the reading given from the Voltmeter and this induces an error (at zero pressure gauge). Is there a way I could use the dead-weight tester and calibrate my pressure transducer directly in NI-DAQ instead of an external voltmeter? I've noticed there is an self-calibrate option in NI-DAQ but I can’t select it for some reason.

Any ideas would be appreciated.

Thank you

Glenn

[JonBowers]

Hi Glenn,

You can't perform self calibration with the 9211 or any C-series module. You can however easily create a custom scale for you DAQmx task by highlighting it in Measurement and Automation Explorer and selecting "Create new..." from the Custom Scaling combo box.

Regards

Jon B

[Labtrainer]

Hi Jon B,

Thank for your reply. However the option 'self calibation' is not available in NI 9211. In other words i cannot select it for some reason!Is there a driver missing?

Glenn