Validyne CD223 Differential Pressure Transducer

[cevert73]

www.validyne.com/FileDownload.aspx?FileNM=ProductCatalog/23.pdf

Hi,

I'm interested in pushing my understanding of a piece of hardware I've been using recently without much of a purpose in mind.  I don't have a background in electronics so bare that in mind as you laugh at me!  

The pdf link above is the manual for the CD223 pressure transducer kit I'm interested in.  I've got everything working okay and can use it no problem, in terms of recording DC output voltages, with a NI USB 6210 or 6009 DAQ.  What I'm interested in (from an academic perspective) would be supplying the pressure transducer with the 5Vrms @ 5kHz excitation required from a DAQ and then demodulating the recorded outputs in LabVIEW, in other words avoiding the box itself.

Would something like this be possible?  I realise there would be hardware modifications to consider also, such as hacking the connector, but like I say I'm only asking because I'm interested.

Thanks.

[sahpe]

Hello cevert73,

I can see that your question has not been picked up in a while!

Did you manage to find any information relating to this query?

There are a few ways to demodulate signals, but most use our high-speed digitizers.

Have you had a look at the examples and tutorials on our website?

Let me know how you are getting on and if we can still help.

I hope this finds you well,

Kind Regards,

Michael S.
Applications Engineer
NI UK & Ireland

[cevert73]

Hi,

Thanks for your reply.  I've had a look through some of the modulation examples but with time constraints I've just decided to use the analogue outputs on the validyne box itself, which has been working fine until now.  If I ever get round to this again then I'll ask!

Thanks again.

[Ben]

They are just strain guages so any interface that can do those can be used for the pressure sensor.

If you wnat to roll your own you will need simultaneous sampling hardware so you can do the mV/V measurements.

Ben