Problems with Reading Signal From a Omega PX409-050G5V

[David22JRA]

On the other hand can you use another device and verify if you have the same result?

Regards

[kd2ac]

You can see how I connect the wires on pictures below. 

The first image shows my power supply which provide 15 V and two wires, with red being positive and black is ground.

The second image is the two voltage output signal wires that I connect to NI 9215. The white wire is postive, and the grey wire is ground, according to my colleague.

The third image is the NI 9215 that I use. I have the white wire connected to slot number 6 and the grey wire to slot number 7.

You said that the Omega 5V transducers are 3-wire devices. I believe it's true because the Omega people also said that. But I don't know why my transducer has 4 wires. 

[kd2ac]

I have used two different computers and two different NI DAQ devices, but I got the same result.

Let's say I have slots 1 and 2 on a NI 9215 available. Without the wires of the transducer connected to these 2 slots, the voltage reading on LABview is 0. However, when I connect the wires to these slots, the voltage reading on Labview shows -5 V. 

I use MAX >>> NI 9215 >>> Test Panel >>> ai0 to read the voltage signal.

[dmsilev]

For 0-10 V output transducers, black is common (connected to ground on the power supply and the data acquisition device), white is output, green is not connected, and red is power. There's no grey wire supplied with the Omega cable, so you have a joint or something somewhere. Might want to check that to see that it's ok. 

( http://www.omega.com/pressure/pdf/PX409_SERIES.pdf , scroll down to page B-24g)