『Coefficient of vortex flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. What is the coefficient of WP intelligent flow integrator for vortex flowmeter?
Hello, I am a technician from a vortex flowmeter manufacturer. From the verification report you mentioned above, 4-20mA corresponds to pressure compensation, while 0-1.6MPA must be set in the accumulator. 4-20mA is selected for pressure compensation, and the corresponding pressure range must be set. The lower limit corresponds to 0, and the upper limit corresponds to 1.6MPa. The above step must not be ignored. The following is the issue of the vortex flowmeter coefficient. From your settings, it is normal that the above situation will not occur because the pulse output flowmeter has an inverse relationship between the pulse flowmeter coefficient and the flow rate. Therefore, the larger the flow coefficient, the smaller the flow rate should be. However, the opposite is true for friends. Therefore, it is judged that it is still a problem of pressure setting, which is the compensation mode of the accumulator mentioned above. Choose pressure compensation, 4-20mA, and set the range to 0-1.6Mpa. Let me explain one more thing for you. The coefficient is 335.102m to the negative third power, and I noticed that it is - third power. This means that the unit is L, not cubic meters, which is quite certain. In fact, many integrators also have units to choose from, some default coefficient units are L, while others are cubic meters, with a difference of 1000 times between them. So, always be careful when dealing with disturbances. Sometimes when the flow rate difference is too large, you need to consider the reason for this setting. If it is a pulse coefficient and the flow rate is too small, reduce the coefficient by 1000 times. If it is too
2. Working principle of steam vortex flowmeter
The steam vortex flowmeter is based on the Karman vortex principle, which measures the flow rate by detecting the frequency of vortex generation in the fluid. Its core working principle and key points are as follows
1. Generation and characteristics of Karman vortex: A triangular cylindrical (or cylindrical) vortex generator is set up in the fluid pipeline, and regular vortices are alternately generated on both sides when the fluid flows through it, which is called Karman vortex.
. Vortex arrangement: The vortex arrangement is asymmetrically arranged downstream of the generating body, and its frequency f is related to the fluid velocity and geometric dimensions of the generating body. 2. Mathematical relationship between flow rate and frequency. The basic formula for the relationship between vortex frequency f and the average fluid velocity U is: f=Sr · U? /d = Sr·U/(m·d)U? Average velocity on both sides of the vortex generator (m/s); Sr: Strouhal number (dimensionless, related to the shape of the generator and Reynolds number); d: The width of the inflow surface of the body; m: The ratio of the area
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