First, the advantage of air flowmeter is that the pressure loss is extremely small and the measurable flow range is large. Generally, the ratio of the maximum flow rate to the minimum flow rate of air flowmeter is above 20: 1, and the applicable industrial pipe diameter is relatively wide, up to 3m. The output signal has a linear relationship with the measured flow, and the accuracy is high. It can measure the flow rate of acid, alkali, salt solution, water, sewage, corrosive liquid, mud, pulp and other fluids with conductivity ≥ 1μs/cm. But the air flowmeter can't measure the flow of gas, steam and pure water.
2. In the process of using the air flowmeter, the airflow drives the turbine blades to rotate through the flowmeter. The number of revolutions of the impeller is proportional to the volume of gas passing through the air flow meter. A specially designed patent guide frame is installed at the entrance of the flowmeter, which accelerates the airflow entering the flowmeter with the increase of flow velocity.
Application field:
1. Flow measurement is a science that studies the quantitative change of substances, and the law of mutual change of mass is the basic law of the development of things, so its measurement object is not limited to pipeline liquid in the traditional sense, and there are problems in flow measurement wherever quantitative change is needed.
2. Flow rate, pressure and temperature are listed as three major detection parameters. For a certain fluid, as long as these three parameters are known, its energy can be calculated, and these three parameters must be detected in the measurement of energy conversion. Energy conversion is the basis of all production processes and scientific experiments, so flow, pressure and temperature instruments are widely used.
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