How to Wire a Self-Powered Current Transducer to NI 9207

Updated Oct 27, 2020



  • NI-9207

I have a self-powered flow meter which outputs a current proportional to the measured flow. The getting started guide for the NI-9207 provides information on how to wire a loop-powered current transducer, where the power supply is routed through the module (Vsup).

How should I connect it without having the power supply going through the Vsup terminals?

You should wire the + terminal of the current transducer to one of the current inputs, and the - terminal to the COM. 

The current inputs range from AI8 to AI15,