Process Control Devices offers a thermal mass flow meter from India that can help the operator in measuring the gas flow directly with the help of process control devices. This meter utilizes a heating process for the measurement of flow. It has no moving parts; thus, maintenance requirements are minimal. The meter is available in inline and insertion type, and its output is 4-20 mA a... https://www.pcd-flowmeter.com/flow-meter/thermal-mass-flow-meter-manufacturer