What aspects should be paid attention to in the selection of mass flow meters?
As mentioned earlier, the commonly used flowmeter, such as flow measurement of orifice flowmeter, turbine flowmeter, vortex flowmeter, electromagnetic flowmeter, rotor flowmeter, ultrasonic flowmeter and elliptical gear flowmeter the value is the volume of fluid flow. In scientific research, production process control, quality management, economic calculation and trade transfer activities, the amount of fluid involved is generally mass.
Only by measuring the volume flow of the fluid, can the flow rate of the fluid not meet the requirements of the people, and the mass flow of the fluid is usually managed. In the past, only by measuring the temperature, pressure, density and volume of the fluid, the quality of the fluid could be indirectly obtained by the methods of modification, conversion and compensation. This method of measurement has many intermediate links, and the accuracy of mass flow measurement is difficult to be guaranteed and improved. With the development of modern science and technology, a number of methods and devices for measuring mass flow directly have been developed, which promote the progress of flow measurement technology.
The volume of a fluid is a function of fluid temperature and pressure, is a dependent variable, and the mass of a fluid is a quantity that does not vary with time, space, temperature, and pressure.
