Development Of Flowmeter Applications

Coriolis
The Coriolis mass flow meter (CMF) is a direct mass flow instrument made by utilizing the Coriolis force principle that is proportional to the mass flow rate when a fluid flows in a vibrating tube. [2]
The application of CMF in China started relatively late, and several manufacturing plants have independently developed and supplied the market; Several manufacturing factories have established joint ventures or referenced foreign technologies to produce series of instruments.
More than 30 series of CMFs have been developed abroad, and each series focuses on technological innovation in the design of flow detection and measurement tubes, improving the stability and accuracy of instrument zero points, and other performance; Increase the deflection of the measuring tube, improve sensitivity: improve the stress distribution of the measuring tube, reduce fatigue damage, and strengthen the ability to resist vibration interference.
Some manufacturers have developed Coriolis instruments that can measure gas-liquid two-phase flow, which can be applied in situations where traditional instruments cannot work, such as unloading ships and media containing bubbles. At the same time, there is an MVD transmitter that can achieve online self calibration of the instrument, which means that the flow meter does not need to be removed, and the performance of the on-site instrument can be judged by checking the rigidity of the flow tube.
electromagnetism
Since EMF entered industrial applications in the early 1950s, its usage has been expanding day by day. Since the late 1980s, it has accounted for 16% to 20% of the sales revenue of flow meters in various countries.
China has developed rapidly, with estimated sales of 6500-7500 units in 1994. Domestically, EMFs with a maximum diameter of 2-6m have been produced, and there is equipment capability to verify the actual flow with a diameter of 3m. In 2008, sales reached $77 million, with an estimated sales volume of over 350000 units.
Vortex Street
USF entered industrial application in the late 1960s and has accounted for 4% to 6% of the sales revenue of flow meters in various countries since the late 1980s. In 1992, the estimated global sales volume was 35.48 million units, while domestic products were estimated to be between 8000 and 9000 units during the same period.