Connecting Multiple Omega PX209 (Pressure Transducers) to NI 9205

[Rancourt]

I am trying to connect 4 Omega PX209-030G5V pressure transducers to my NI 9205 module and read data through the DAQ Assistant VI.  I cannot figure out how to wire the transducer correctly.  The specs sheet for the transducers is at http://www.omega.com/ppt/pptsc.asp?ref=PX209_PX219. So far I can't get the hardware to talk to the VI.  I know the rest of my configuration is working because I have a set of thermocouples wired through another module and the VI is detecting those.  I think what I need help with most is understanding which wires should go where, suggestions on how to get four wires into COM or AI SENSE if needed, and how to work the DAQ Assistant for a pressure transducer.

Any help is greatly appreciated!

Regards,

Greg

[AnalogKid2DigitalMan]

Are you using the 9205 in differential or single ended configuration?

Regardless, the sensor needs an external power supply in the range of 7 to 35VDC it looks like from your specs.

The positive of this supply will connect to Pin 1 (red)

The common of this supply will go to AI- if differential, or COM if single ended. It also goes to Pin 2 (black) of the sensor.

The output of the sensor is Pin 3, white, this goes to AI+ if differential, else AI if single ended.

0psi will ouput 0V, 30psi should output 5V. Thus 1 volt per 6 psi.

Can't help with DAQ Assistant, I have never used it. You could possibly try the test panels in MAX to verify your connections/signals.

-AK2DM

[Rancourt]

I got it to work.  Thanks for the help!