A batching system is an economical way to add liquids in a precise amount. There are two basic types; mechanical and electronic.
A mechanical system has a meter with a mechanical preset counter, a reset counter and mechanical preset valve. A micro switch can be wired into the system to start and stop a pump.
When all the liquid has been delivered, the preset counter mechanically triggers the valve once again, closing the valve completely and shutting off the pump.
An electronic batching system has a meter equipped with a pulse transmitter. The pulse transmitter can have a resolution from one pulse per gallon to over a thousand pulses per gallon. The pulse is transmitted to an electronic batching counter. The batching counter factors the pulses into engineering units such as pounds or gallons.
When all the liquid has been metered, the valve closes completely and the pump stops. Depending on the batching application, features such as slow flow start and repeat batching can be added.