Precession vortex flowmeter is small in size, good performance, corrosion resistance, strong anti-vibration and anti-interference ability, so it has been widely used in the field of measurement. The following technology Xiaobian flowmeter manufacturers to explain in detail for everyone Let's take a look at the causes of the error in precessional vortex flowmeter measurement.

The factors that flowmeters produce errors can be summarized in the following factors: flow range, pressure change, and straight pipe segment factors. The error is mainly caused by mechanical vibration, impurities in the medium, and electronic interference. In the process of use, it is also necessary to consider whether these factors interfere with the normal working state of the flowmeter. Otherwise, the flowmeter will produce a certain amount of error. .

4.1 Measuring Instrument Error

In the process of using meters, each flow meter has a certain flow range. When the flow of media is low, or if the flow rate is higher than the upper limit of the flow, it will seriously damage the flowmeter, resulting in excessive loss and the flowmeter cannot be guaranteed. use.

In addition, the process is also very important. In general, the amount of gas in the early stage of development is relatively large. In the later period, the amount of gas is continuously reduced. Therefore, the flowmeter must be based on the range of the working flowmeter. If the upper or lower limit of the range is exceeded, the measurement error will occur. .

Secondly, the error caused by pressure, the accurate detection of pressure plays a decisive role in other accurate measurements, especially to reduce the corresponding error. As the pressure at the monitoring point increases, the relative error becomes smaller and smaller, so it is in use. In the process, pressure should be selected according to certain conditions. The large pressure loss is a defect of the flowmeter. After continuous improvement, the pressure loss is continuously limited, but when the pressure loss is too large, we must consider other ways to change this situation.

Finally, under the influence of the straight pipe section, the principle of flow measurement of the spiral vortex flow meter shows that the flow state of the fluid medium has a great influence on the measurement result. Therefore, in the front and rear parts of the flow meter, there should be a sufficiently long straight pipe section. Ensure the stability of the media. Under normal circumstances, the straight section is not less than 5D, and the straight section is not less than 1D. If there is space limitation, the front section can be relaxed to no less than 3D when there is no throttle before the watch. However, when there is a flow restriction in front of the table, the requirements for the straight section must not be less than 5D. Only in this way can the error be minimized.

4.2 Errors Caused by Changes in the External Environment

The external error is mainly caused by mechanical vibration, gas impurities, electromagnetic interference and other errors.

Xiao Bian Tip: Flow meter as a highly sophisticated instrument, not only in the manufacturing and use of the process need to strictly comply with its requirements, in the latter part of the maintenance must pay special attention to not make the flow meter early retirement. If you have any other questions or needs regarding the flow meter, you can contact the Shunda flow meter manufacturer and we will be happy to help you.

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