We have successfully had a system fielded for about a year now, and one of its several functions is to measure product flow through its channels. Given the application, chemical compatibility, cost, size and overall flexibility, I chose a Reed switch actuated flow meter and am sinking it into a National Instruments 9425 discrete input module, which is basically an I/O module for a PAC system called a cRIO 9068. I am using period-based calculations on the FPGA to derive a tick count and go...
Sinking 12V through a Reed switch into a discrete input module (NI 9425)
Sinking 12V through a Reed switch into a discrete input module (NI 9425)