06-22-2010 07:16 AM
hello, I am trying to connect ASCX series differential transducer to SCXI or PXI , but my difficulty is that it has 6 pins they are
pin 1 external offst adjustment
pin 2 vs
pin 3 +output
pin 4 ground
pin 5 n/c
pin 6 do not use
my problem is how to connect this sensor to ni 9237..
I am attaching data sheet of that pressure transducer
06-22-2010 08:07 AM - edited 06-22-2010 08:08 AM
Without spending too much time looking at the documentation, from using previous similar transducers, the primary two connections you are concerned with are the "+output" and the "ground". The other connections are also important, but aren't directly the concern of the Data Acquisition Hardware. The "+output" produces a variable dc voltage relative to the "ground" input that is a product of the applied pressure, with the maximum output voltage, as shown on the chart, indicating maximum pressure. So you would connect those, through a suitably shielded, moderately short length, wire to the "DAQ" analog input. You will also have to supply the transducer with it's required + supply voltage at pin 2 "vs", and the power supplie's negative to the ground. There are whitepapers on this NI site about connecting to data acquistion hardware and I strongly suggest reading them a couple of times as well as anything online you can find. Writing the DAQ software, in LabVIEW or whatever, can be trivial compared to making the correct, low noise, connections to sensor hardware.
I didn't read how the offset adjustment signal is produced or its use, figure it is designed to allow you to "tune out" some signal offset caused by differences between sensors of a type (they will not all have the same "fullscale output" as indicated in the chart).
As you proceed, please keep asking.

06-22-2010 11:13 PM
Thank you very much sir, i wil inform the result as i complete the work