As the industry leading supplier, Parker offers liquid and gas, electronic, manual and thermal mass flow controllers (MFCs) for flow rate applications. Parker's line of MFCs includes models for vapor delivery systems, liquid MFC, gas MFCs and variable constant differential flow controllers.

A mass flow controller controls a certain flow by comparing a setpoint value between 0 and 100% of its full-scale range with the measured value. After that, the control valve adjusts the flow (very fast) by opening or closing the valve further until the setpoint is exactly reached. Various principles are used for measuring the flow, such as

The standard minimum flow rate of the micro gas mass flowmeter is 2ml/min. Chlorine, air, and compressed air can reach it. Some gases with a low C.F coefficient can be measured even lower. The standard accuracy of the gas mass flowmeter is 0.5%. 1.0% reading, 0.5% full scale accuracy, repeatability 0.2%.

OSTI.GOV Conference: Experience gained in the process of the variable mass heat flow control implemented in the district heat supply system of the city of Gyor

When flow takes places, gas carries heat from upstream to downstream of two precision Digital Mass Flow Controller With Multi-Gas Functionality 

Request PDF | Experimental and numerical analysis of heat transfer phenomena in a sensor tube of a mass flow controller | In the present work, the heat 

Thermal flow meters are primarily used in air and gas flow measurement As the flow rate increases, heat gets taken away from the heated sensor in the 

As gas flows through the sensing tube, heat is displaced to the downstream temperature sensor creating a temperature differential between the upstream and 

As the gas passes through the tube, the electronics sense the amount of heat transferred from one coil to the other. This system ensures that the zero remains 

The weight is the mass flow rate times the duration: W = m ∆t. Or, more properly, with gravity and dimensional units considered: Tbefore heat is added. Then: Again, the controller does not add temperature, it manages processes that add or remove thermal energy, and temperature is the response.

Feb. 3, 2013. Some of the earliest ideas for a thermal mass flow controller go back as far as 1911, when C.C. Thomas described a flowmeter containing a heated element with two thermometers Mass Flow Controller.