Matters needing attention during installation and use of precession vortex flow meter
Precession vortex flowmeter without mechanical moving parts, small size, corrosion resistance, stable performance; It can directly display the working pressure, temperature, flow rate and gas volume under standard state of the medium; With the advantages of wide measuring range and small measuring error, the precession vortex flowmeter has been widely used in the production measurement of oil and gas Wells and the sales measurement of natural gas.
To ensure accurate metering and reduce metering errors of the precession vortex flowmeter, please note the following:
1. Reasonable selection does not make the actual minimum flow QVmin lower than the lower limit of the flow range of the selected runoff meter.
2. Install the correct metering straight pipe section of at least 10D length upstream of the flow meter. The inner wall of the straight pipe section should be smooth, and there should be no steps, and the weld of the connecting flange should be smoothed, and the flange gasket should not burst into the pipeline. The installation direction of the flowmeter can not be reversed. The test proves that all unreasonable installation will lead to low metering value of the flowmeter.
3. Stay away from the shock source, or install support piers on the flow meter and downstream to avoid the impact of pipeline vibration. Avoid the interference of strong magnetic field on the flowmeter chip.
4. The temperament is relatively clean, especially can not appear liquid gas two-phase flow; When the temperament is dirty, the flowmeter should be cleaned immediately.
5. To reduce the impact of air pulsation, the buffer tank can be installed in front of the flow meter, or the length of the metering straight pipe section upstream of the flow meter can be extended.
6. Timely metrological verification of the flowmeter to ensure accurate and reliable value.
