You can use any of the following: 1100,1102 series, 1120 series, 1121,1122,1125, or the 1126 modules. NI RECOMMENDS either the 1102 or the 1125 module for current analog inputs. The 1102 module has 32 differential channels for inputs. The 1125 has only 8 inputs; however, they are isolated. The 1102 is a steady state signal conditioner with a 2 Hz filter whereas the 1125 has settings for either 4 Hz or 10 kHz (this would allow for unsteady pressure measurements).
If you have a catalog (2003), look at page 253 for a comparison of the modules. The modules have different gain and filter capabilities. You will need to choose the one which suits your filter/isolation needs.
