I need to find a way to alarm when a small piston type metering pump has zero flow. The gpm is around .01. My available card in a very full plc is a 120v input. I have found some switches but I think the pulsing will make the switch cycle. Does anyone have like equipment in there plant or any other ideas? I thought about capacitance sensor but the line never goes empty.
Thanks in advance
Sheirj
Thanks in advance
Sheirj