For my student project, I'm going to be using a 4-20 mA and +/- 10 V output pressure transducers and the output of these sensors will be going into a DAQ system that we purchased from DEWESOFT. Along with the DAQ system, we will be purchasing additional adapters that were suggested by the company and I am confused regarding which one to pick.
There is a voltage adapter called DSI-V-200 that takes up to +/- 200 V excitation. It's official description on the website is : "DSI-V-200 adapter will enable any DSUB9 analog input to accept ±200V voltage range, differential input via BNC connector. Bandwidth and ranges are defined by the connected amplifier."
The other adapter is a current adapter which I believe might be more suitable called the DSI- 20 mA, which is used for direct current measurement. The official description is: "DSI-20mA - 20mA current input adapter with internal shunt 50 Ohm, 0.05% accuracy for sensors with 4 to 20 mA output."
My question is whether voltage or current adapters are more suitable for a 4-20 mA industrial pressure sensor? Can anyone explain whether reading voltage or current measurements from an industrial pressure sensor is more appropriate?
Here is the link to the pressure transducer spec sheet: http://www.futek.com/files/pdf/Product%20Drawings/pmp410.pdf