Nine advantages of V-cone flowmeter

　　1. Wide range ratio. It can measure flow (small flow) in the lower Reynolds number range (Re ≥ 8000). Because the V-cone is hung in the center of the pipe, it directly interacts with the high velocity area, forcing the high velocity area to mix with the low velocity area near the pipe wall; when the flow decreases, the V-cone continues to interact with the maximum velocity in the pipe. When other differential pressure instruments may not detect differential pressure signals, the V-cone sensor can still generate differential pressure signals as low as 8000. This is one of the biggest advantages of the V-cone flowmeter when detecting small flows. The typical range ratio is 10:1, and by selecting appropriate parameters, it can reach 50:1.

　　2. Low straight pipe section requirements for installation. V-cone flowmeters have low requirements for straight pipe sections for installation, upstream straight pipe: 0-3D; downstream straight pipe: 0-1D. Due to the shape of the V-cone flow sensor and the characteristics of the central installation position, it directly interacts with the high velocity area of ​​the flow. The V-cone forces the high velocity area to mix with the low velocity near the pipe wall. When the fluid approaches the cone, the flow pattern becomes "flat" and develops towards the fully developed flow shape. The flow pattern can be re-formed upstream of the cone, so that the V-cone sensor only needs a shorter straight pipe section than other flow measurement instruments to form a fully developed flow in the pipe.

　　3. High precision. The accuracy of the primary element of the V-cone sensor is ±0.5%. The system accuracy depends on the accuracy level of the V-cone sensor and the accuracy level of the differential pressure transmitter and secondary instrument.

　　4. Good repeatability. The repeatability of the V-cone sensor is better than 0.1%.

　　5. The V-cone shape of the V-cone flowmeter contracts the fluid, creates a vacuum effect on the cone surface, does not impact the abrupt surface, forms a boundary layer along the cone surface, and guides the fluid away from the β edge. The V-cone sensor is wear-resistant, and the sensor has good long-term stability. This means that the β edge will not be worn by dirty fluids, so the β coefficient remains unchanged, and the V-cone sensor has the characteristics of long-term stability and good performance.

　　6. Good signal stability. Differential pressure detection generally has "signal fluctuations". Even when the flow rate is stable, the signal generated by the primary element will fluctuate to a certain extent due to interference. For the V-cone sensor, the fluid passes through the V-cone and forms a short eddy current behind the V-cone, generating a low-amplitude, high-frequency signal that is converted into a stable V-cone signal. Its signal fluctuation is 1/10 of that of the orifice plate.

　　7. Small permanent pressure loss. Because the fluid does not impact the smooth surface of the sudden V-cone, the permanent pressure loss of the V-cone sensor is lower than that of the orifice plate. Similarly, due to the stability of the V-cone signal, the full-scale V-cone differential pressure signal of the same flow rate is lower than that of other differential pressure instruments. For the same β value, its pressure loss is 1/3 to 1/5 of that of the orifice plate.

　　8. The V-cone β coefficient calculation range is wide. Due to the unique geometric shape of the V-cone sensor, its β coefficient range is wide, and the standard β coefficient range is: 0.45, 0.55, 0.65, 0.75, 0.85.

　　9. The V-cone sensor of the V-cone flowmeter has a self-cleaning function. There will be no retention area in the tube where particles, residues, and condensates in the fluid are deposited. It is suitable for the flow measurement of dirty fluids, such as: coke oven gas, blast furnace gas, raw oil, residual oil, etc. The V-cone sensor is not blocked, does not adhere, and has no dead zone, which is suitable for the flow measurement of dirty media.