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(1) The gas to be measured shall be a single-phase, continuous tube flow through the pipe.
(2) Before the gas flows through the flowmeter, the flow rate must be parallel to the axis of the pipe and no eddy currents are allowed.
(3) The air flow should be subsonic and non-pulsating, and its flow rate will change slowly with time.
2 , the flowmeter installation requirements
This type of instrument does not have many special requirements for process installation and use environment, but any type of flow measurement instrument has such a commonality that it avoids vibration and high temperature environment as much as possible with the off-flow interference components (such as compressor, separation). , pressure regulators, size heads and headers, elbows, etc.), keep the straight and straight inner wall of the meter straight and flat, and ensure that the measured medium is a clean single-phase fluid.
3 , the flowmeter installation and use should pay attention to matters
Precession vortex flowmeter has no mechanical moving parts, small size, corrosion resistance, stable performance; can directly display medium working pressure, temperature, flow rate, and the amount of gas under standard conditions; wide range of measurement, small measurement error, etc. It is widely used in the production and measurement of oil and gas wells and in the measurement of natural gas sales. In field Applications over the years, we believe that the flow meter is best suited for relatively clean dry gas metering and gradually becomes the preferred meter for metering small and medium-sized gases.
