A flow meter is a device used to measure the instant flow rate or quantity of a gas or liquid passing through a pipeline. Flow meters are also known to by other names, such as flow gauge, flow indicator, liquid meter, etc. Depending on the particular industry. yet the function to measure flow remains the same in all the meters. Benefits of using digital flow meters are you can log data, transmit to your flow controller, PLC or SCADA system. Also, you can control the ongoing flow rate in the pipes. By using the batcher feature it is easy to have a set amount of quantity in your process.