Hello,
I have a NI 9205 I am using to read the data from a 3 wire pressure transducer. However I am not sure how to connect it properly. I have a the + signal wire going into the NI 9205 AI0 port. The transducer needs an excitation voltage from of 15V-30V which I am providing a from a DC output. I am connecting the positive terminal to the + excitation wire, and the negative terminal to the - excitation wire, so that power is being supplied. The - excitation also acts as the COM.
When I run with this set up I am not getting good data. The voltage being read jumps everywhere.
I have tried running the NI 9205 in DIFF, NRSE, and RSE mode, but nothing seems to be working. So I know I am not connecting the pressure transducer up properly.
Any information to that will point me in the right direction is appreciated.
Thank you!