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technical article
Verabar Flowmeter Concept
2011-8-31 8:58:26

     威力巴流量计 前部产生一个高压分布区,高压分布区的压力略高于管道的静压 ,阻止颗粒进入 When the fluid flows through the probe, a high-pressure distribution area is generated at the front of the Verabar flowmeter . The pressure in the high-pressure distribution area is slightly higher than the static pressure of the pipeline , preventing particles from entering . 产生一个低压分布区, 因此 低压分布区的压力略低于管道的静压。 According to the principle of Bernoulli's equation, when the fluid flows through the probe, the speed is increased, and a low-pressure distribution area is generated at the rear of the probe , so the pressure in the low-pressure distribution area is slightly lower than the static pressure of the pipeline. 产生部分真空,并 在探头的两侧出现旋涡。 After the fluid flows through the probe , a partial vacuum is created at the back of the probe , and vortices appear on both sides of the probe. 均速流量探头的截面形状、表面粗糙状况和低压取压孔的位置。 The key factors that determine the performance of the probe are the cross-sectional shape of the average velocity flow probe, the surface roughness, and the location of the low pressure pressure taking hole. 的是 低压信号的稳定 和准确 What determines the accuracy and performance of the average speed probe is the stability and accuracy of the low-voltage signal . Verabar's average velocity flow probe can accurately detect the average differential pressure produced by the average velocity of the fluid. The Verabar average velocity flow probe has multiple pairs of pressure taking holes arranged according to certain criteria in the high and low pressure areas, making it possible to accurately measure the average flow velocity .
  测量原理 Verabar flowmeter measurement principle
  是一种插入式流量测量仪表。 Verabar flowmeter is a plug-in flow measurement instrument. 当流体流过传感器时, 在其前部迎流方向产生一个高压分布区 , 在其后部产生一个低压分布区。 A Verabar sensor is inserted into the pipeline . When the fluid flows through the sensor , a high-pressure distribution area is generated in the forward flow direction of the front , and a low-pressure distribution area is generated at the rear. 区有按一定规则排列 多对 一般为三对取压孔, 分别 测量流体的全压力 包括静压力和平均速度压力Pl 和静压力 P2 There are multiple pairs of sensors arranged in high and low pressure zones according to certain rules , generally three pairs of pressure taking holes , which measure the total pressure of the fluid , including static pressure and average velocity pressure Pl and static pressure P2 . , 测量出差压 △P=P1-P2, △P 则是 反映流体平均速度的大小, 以此可推算出流体的流量。 Introduce P1 and P2 into the differential pressure transmitter , and measure the differential pressure △ P = P1-P2. △ P reflects the average velocity of the fluid , which can be used to calculate the flow rate of the fluid.