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Measurement of steam mass flow using vortex flowmeter

The vortex flowmeter is used to measure the steam mass flow rate: the vortex flowmeter is a volumetric flowmeter, that is, the fluid Reynolds number is within a certain range, and its output is only proportional to the volume flow.
The output of the vortex flowmeter has two kinds of frequency signals and analog signals, and the analog output is obtained by f/I conversion on the basis of the frequency output. This conversion is about 0.1% loss of accuracy. Therefore, when measuring steam flow, users prefer to use frequency output.
The frequency output vortex flowmeter is more popular with users such as the Heat Company and other reasons are as follows.
a. The frequency output vortex flowmeter is slightly lower (non-intelligent).
b. The frequency output vortex flowmeter full scale modification is more convenient, and only a simple operation of the buttons on the programmable flow calculator panel can be realized according to a prescribed method.
c. The frequency signal output by the frequency output vortex flowmeter calculates the steam mass flow, and only needs to know the current working condition of the fluid, and the temperature and pressure compensation of the analog output vortex flowmeter only compensates for the error caused by the current working condition deviating from the design working condition. Therefore, not only need to know the current working conditions, but also need to know the design conditions. The latter case data often causes errors due to data loss due to time lapse or personnel changes. Compared with electromagnetic flowmeters, under the orifice flowmeter, the frequency output vortex flowmeter does not have this problem.

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