Summary of the features of the Weiliba flow meter

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　　The VeriFlow meter belongs to the category of differential pressure flow meters. Thanks to its excellent anti-clogging design, it eliminates the problem of easy clogging that plagues insert-type flow meters such as those from Anubis, thereby raising the performance level of average velocity tube flow meters to an unprecedented height. Below, the technical team at ShunDa Flow Meters has summarized the features of the VeriFlow meter to assist you in making an informed choice. 　　(1) The high-pressure pressure tapping hole will not get clogged. According to Bernoulli’s principle, as the fluid flows through the probe, the dynamic pressure head is entirely converted into static pressure head; this creates a high-pressure zone in front of the probe, resulting in zero fluid velocity there. The pressure in this area is slightly higher than the static pressure in the pipeline, which prevents particles from entering the pressure tapping hole. At the beginning of operation, under the static pressure in the pipeline, the fluid enters the high-pressure pressure tapping hole, and a state of pressure equilibrium is quickly established. Near the high-pressure pressure tapping hole, the fluid encounters high pressure and takes an alternative path, thus no longer entering that hole; as a result, there is no relative flow of fluid within the high-pressure pressure tapping hole and its connecting pipes. 　　(2) Essential anti-clogging through low-pressure pressure tapping Under normal conditions, dust, sand, and particles accumulate at the back of the probe due to the action of vortex street forces. This is why the autumn leaves are always concentrated behind houses sheltered from the wind. In other types of probes, since the low-pressure pressure tap is located in the vacuum area at the rear of the probe, under the action of the vortex street force, this low-pressure pressure tap is quickly blocked by impurities carried by the eddies. Although some probes employ measures such as purging to prevent clogging, these only provide temporary solutions and cannot address the issue at its root, thus inevitably affecting normal flow measurement. 　　The front surface of the Coriolis flowmeter probe is rough, with angles formed on both sides so that the low-pressure tapping holes are located in front of the fluid separation point. This unique positioning of the low-pressure tapping holes prevents blockages and signal fluctuations caused by vortices; this is what ensures that the signals read by the Coriolis meter are more stable and effective in preventing blockages. It is also the reason why the Coriolis meter can operate in environments where other probes cannot function. Weiliba achieves essential prevention of clogging in low-pressure holes and generates a very stable low-pressure signal. 　　(3) High accuracy in actual use. Due to the use of multiple pressure measurement points, the probe passes through the entire cross-section of the pipe diameter along which the fluid flows; pressure is measured at several such points, with the spacing between them determined through area integration. The signal obtained is a true reflection of the average velocity. Therefore, the true flow rate can be measured with relatively high accuracy even when there is insufficient straight pipe section or large fluid fluctuations. Other types of insert-type flow meters that are not of the uniform velocity type typically use single-point pressure measurement, which results in lower accuracy in practical applications, such as turbine, vortex street, electromagnetic, and ultrasonic flow meters. 　　(4) Differential pressure is easy to determine. The probe size used in Coriolis flowmeters is that of a standard throttling element; therefore, it is necessary to calculate the differential pressure based on the actual fluid conditions of the user, in order to determine the range selection for the differential pressure transmitter. Under the same fluid conditions, any model using the same probe size will yield the same calculated differential pressure. This process is the exact opposite of that used with orifice plates, where the differential pressure is determined first, and then the size of the throttling element is designed. 　　In summary, high precision, low pressure loss, resistance to clogging, easy installation, and maintenance-free operation are the advantages of the Velibra flow meter. Meanwhile, with the development of transmitter technology, the accuracy of differential pressure transmitters has been increasing; even for very small differential pressures, the accuracy can reach 0.075%, which lays the foundation for accurate measurement by throttle flow meters.