Why should two pipes be used for mass flow meters?
According to this principle, the flow meters that work now are called mass flow meters.The media in one of the two pipes do not flow and flow with the other pipe medium. By comparing the two tube Coriolis force to obtain the various flow, we can easily eliminate the influence factors of pipeline vibration or interference measurement and fluid vibration like.
The media in one of the two pipes do not flow and flow with the other pipe medium. By comparing the two tube Coriolis force to obtain the various flow, we can easily eliminate the influence factors of pipeline vibration or interference measurement and fluid vibration like.
Flowmeter using Coriolis principle:In a rotating disk, when a particle moves along the radius from the center to the edge, it produces a force that causes the disk to rotate at a reduced speed. Otherwise, it will produce a force that causes the rotation of the disk to rise and fall. The magnitude of the force is directly related to the mass of the particle and the speed of motion. The first study of this kind of phenomenon is called Coriolis, this is also called the Coriolis force.The motion and trajectory of particles in the above phenomenon are changed into pipes and flowing medium, and the rotation in these phenomena is restricted to a small range. According to the Coriolis principle, when the flow along the pipe from the center of the circle, it will produce a force to turn back and forth frequency decline. When flowing along the pipe to the center, a force that causes the frequency to rotate up and down is produced. The magnitude of the force is directly related to the density of the medium and the velocity of the flow.Make a make medium flow to the first, and then to make the flow of the pipeline, applying a piping and vibration below, with a fixed frequency, descending pipes and ascending do circle movement back and forth. When the medium flowing in the pipeline, because of the Coriolis effect, decreasing pipeline vibration frequency and rising stage and promote the frequency of pipe vibration will produce a phase difference. This phase difference is proportional to the density of the medium, the velocity of flow, and the shape of the duct (the area of the flow). The phase difference is detected and the mass flow can be directly obtained.
