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Flowmeter selection and trend description

Flowmeter selection and trend: The first problem encountered in the use of flowmeters is the selection of the instrument. The selection of the flowmeter is not an easy task. There are many factors to consider, including instrument performance, fluid characteristics, installation requirements, environmental conditions and economic factors. It is necessary to go through careful analysis and comparison before deliberation can make a decision. Once the decision is made, it may cause the measurement to fail. It can be said that there is no ideal flow meter, only a flow meter that can solve your problem just right. It is your ideal flow meter. Flowmeter manufacturers are trying to prototype a flowmeter to meet all needs. Summarizing all the advantages of thousands of flowmeters, the conditions for the ideal flowmeter are as follows:
1) The detecting piece has no obstruction;
2) The test piece can be clamped outside the pipe and can be moved at any place without any need to cut off the pipe and fluid;
3) The flow calculation equation of the meter is simple and clear, and can be extrapolated to the unknown field without real-flow verification;
4) Frequency pulse output signal, digital instrument, easy to remotely resist interference and connect with computer;
5) The output signal of the instrument is not affected by the physical properties of the fluid medium;
6) The instrument output signal is not affected by the fluid flow characteristics;
7) The instrument repeatability is good;
8) The meter range is wide and the linearity is good; the PDF file is created using the "pdf Fact o『V P『o" trial version.
9) The instrument has high reliability, moderate price and uncomplicated maintenance technology;
L0) No need for individual flow verification, or only “dry school”, or verification in one or two media can be extended to other media;
11) The output signal of the test piece directly reflects the mass flow.

It can be said that the above ideal flowmeters have not appeared so far. All flowmeters, whether selected electromagnetic flowmeters or vortex flowmeters, have more or less some of the above conditions, but some are more, some are less. All flowmeter manufacturers are experimenting with new products in an effort to have more of these conditions.

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