Reading Pressure from SCXI-1000, SCXI-1102, and SCXI-1303

[tfeldman]

I have an SCXI-1000, SCXI-1102, and SCXI-1303. I want to plug in a pressure transducer with the following wires: +5V supply, Common, and +Output (1-5V), it is not clear where I need to plug the +Supply wire into the 1303. Any help would be appreciated. 

Thank you,

-Tom

[_kb]

Hi Tom,

It sounds like the transducer that you are using is a bridge-based sensor that requires a 5V excitation.  The 1102 does not provide this type of signal conditioning, so you'll likely need to find another module that can generate 5V or an external excitation source.

Can you provide a data sheet or model number for the pressure transducer that you are using?

[tfeldman]

it is a MSP-300,

http://www.meas-spec.com/downloads/MSP300.pdf

I mis-read the requirement for it and it turns out it requires between 8-30 VDC. I wired it up to an external 9V for testing and it seems to be working great.

I have a follow-on question. To properly meassure pressure, do I need to do anything with the pull-up/pull-down resisters installed on the 1303. It seems to be working fine with them all installed as they came from the factory but I wanted to make sure this is the best way to do it. 

Thank you,

-Tom

[_kb]

The factory-installed 10MΩ resistors are the way to go.  You shouldn't need to make any changes.