Connecting WIKA O-10(T) pressure sensor to NI 9219

[pkb20]

I have a WIKA O-10 (T) pressure sensor. This sensor gives a output signal of 4 to 20 mA.

specs are given in the link; http://www.wika.co.in/upload/DS_PE8165_GB_36812.pdf

I need to connect it to the NI 9219 module. 9219 supports current measurement and pressure sensor gives a current signal. So it should be compatible with each other.

However, how would I convert this current signal to pressure, that is the problem??

[Sajeesh]

read the current signal (4 to 20 mA)

use scaling to convert the mA to Pressure

rate =(output max pressure-Output min pressure)/(input max mA -Input Min mA)

Pressure value = rate*mA (read)+Output min pressure-rate*(Input Min mA)