Flow meters (flowmeters) and flow sensors are devices used for measuring the flow rate or quantity of a moving fluid or gas.

A mass flow meter is a device that consist of a mass flow sensor or transducer and signal processing electronics.

Liquid flow meters are used for measuring the flow or quantity of a moving fluid.

Gas flow meters are used for measuring the flow or quantity of a moving gas in an enclosed pipe or passage.

Flow computers, totalizers, and rate indicators integrate the functions of flow and temperature measurement, computation, data acquisition, input / output (I/O) standardization, and closed loop control.

Flow controllers monitor and maintain proper humidity levels in environmental test applications, or in other areas such as food storage or electronic room regulation.

Flow transmitters provide electrical outputs that are proportional to flow inputs.