Batching

A batching system is an economical way to add liquids in a precise amount. There are two basic types; mechanical and electronic.

Mechanical Batching

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.

  •  

    The amount of liquid needed is indexed into the counter and the valve is opened using a handle.

  •  

    As the preset counter counts down the reset counter counts up.

  •  

    When a pre-determined percentage of the batch remains to be delivered, the preset counter mechanically triggers the valve to partially close, slowing the flow.

  •  

    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.

Electronic Batching

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.

  •  

    On the outlet of the meter, a pneumatic or electric preset valve controls the flow. On some applications this valve can also control the flow rate.

  •  

    The amount of liquid needed is indexed into the counter and the start button is pressed. The control valve opens and the pump starts.

  •  

    When a pre-determined percentage of the batch remains to be delivered in the batch the valve partially closes, slowing the flow.

  •  

    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.