When used for one of these purposes the signal is usually sent to a basic digital counter that has no control capability. In addition to giving a totalized readout in cycles it will also be able to totalize in any engineered unit, such as gallons, cubic feet, cubic meters, liters, etc.
Most basic counters will also be able to give a readout in GPM, L/M, or other flow rates. When using a proximity sensor with a PLC and a solenoid in the air line you can also perform batch metering. In other words, you can pump to a predetermined amount and have the pump shut off at that predetermined amount.
The proximity sensor comes in two configurations. Please consult Yamada America for more information about proximity sensors and their use.
-P1 ISA 10-30VDC 3 wire unit
-P2 ISA 24-240VAC 2 wire unit