Mass flow meter

Mass flow meter, also called mass flow controller(MFC), Mass flow rate calculator which directly measures the mass flow of the medium passing through the flow meter. It can also measure the density, temperature and viscosity of the medium. Mass flow meter(MFM) is a flow measuring instrument that measures the mass flow in the pipeline. The Mass flow meter working principle changes by its working principle. The volume of a fluid is a function of fluid temperature and pressure and is a dependent variable. The quality of a fluid is a quantity that does not change with time, space temperature, and pressure.

Mass flow meters can be divided into two categories: one is direct type, which directly outputs mass flow; the other is indirect type or derivation type, such as the combination of ultrasonic flowmeter and density meter, and their output is multiplied to obtain Get the mass flow.
Direct: There are many types of direct mass flow meters, such as calorimetric, angular momentum, gyro, and double impeller. This kind of instrument is suitable for measuring small flow of gas, but the disadvantage is that it is inert, the measured value is related to the constant pressure specific heat of the gas, and the measuring element is in contact with the medium and is easily contaminated and corroded.
Indirect: There are 3 main types of indirect mass flow meters: a combination of a velocity flow meter and a density meter, a combination of a throttling (or target) flowmeter and a volumetric flowmeter, and a throttling (or target) flowmeter. Type) flowmeter and density meter combination.
Thermal: The basic principle of mass thermal flow meter is to use an external heat source to heat the fluid to be measured in the pipeline.
Coriolis: Coriolis mass flowmeter (referred to as Coriolis force flowmeter) is a direct measurement method that utilizes the principle of Coriolis force proportional to mass flow generated by fluid flowing in a vibrating tube.