How to Use Multiple PX409 Pressure Transducers with LabVIEW 18

[mig1214]

Hello everyone,

I am trying to use 3 OMEGA pressure transducers at the same time in one program. The pressure transducers came with a LabVIEW program example (see attached zip folder: PX409USBH_LabView_Drivers_1.01.13.06.14 >> Vls Version 2012 >> Example - Streaming Data) but it only allows the use of a single pressure transducer.

Originally I planned to use the "Example - Streaming Data" as a SubVI but I am not able to get the output measurement out of the SubVI. Any help will be greatly appreciated.

[Gregory]

Hi mig,

I'm not familiar with those devices, how does the VISA address look? Does each transducer have a unique address? Then you would need to open a session with each device. Or do all the transducers plug into some kind of Omega meter / hub, and you are supposed to use the drivers to select the current device?

The reason you can't use the streaming data example as a SubVI, is because no data comes out of a SubVI until it is finished running. You will want something similar to the single read example, although you don't need to open and close the session every time, just at the start and end of your program.

[Henrik_Volkers]

Looks like USB/serial   ... max samplerate of 1000SPS ... soundcard/USB would be higher 🙂

If you connect all three sensors .. how do the appear in the Systemmanager/Hardware ?

Since they run asynchron a LabVIEW program should run with three independet loops

(Hope that the vis can run reentrant 😉  programming style looks quite outdated... )

 EDIT: I didn't found a baudrate configuration (but didn't searched a lot.)