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What kind of fluid is suitable for differential pressure flowmeter
2011-11-1 10:33:36

First, let's understand a few issues:

什么是 V10F 差压式流量计 ? 1.What is V10F differential pressure flowmeter ?

能将流体流量转换成差压信号的节流装置 ,还可以测量 差压 并且 显示流量的差压计 It refers to a throttling device that can convert the fluid flow rate into a differential pressure signal . It can also measure the differential pressure and display the differential pressure gauge .

什么是 一次装置 2. What is a primary device ?

;它是 安装在流通管道中的节流装置 The primary device includes a throttling member, a pressure taking device, and a front and rear straight pipe section ; it is a throttling device installed in a circulation pipeline .

什么是二次装置? 3. What is a secondary device?

也称 显示装置 ;它由 差压变送器 流量积算仪 仪表 构成。 The secondary device is also called a display device ; it is composed of instruments such as a differential pressure transmitter and a flow totalizer .

差压式流量计称为标准节流装置 ;那么 什么样的流体适合差压式流量计使用 呢? In general, we call differential pressure flowmeters as standard throttling devices ; then what kind of fluid is suitable for differential pressure flowmeters ?   
使用 差压式流量计 时,对于流体 选择 必须满足以下 4 个条件: Finally, when using a differential pressure flowmeter , the fluid selection must meet the following 4 conditions:
.要等 流体流 节流件以前,流 是平行于管道轴线的无旋流 Before the fluid flows through the throttle, the flow velocity is a non-swirl flow parallel to the pipe axis ;

.流体 流量不随时间变化 而变化; 者说 变化非常 缓慢 The flow of fluid does not change with time ; or the change is very slow ;

. 要想流体 连续地流经管道 内,就 必须 有足够的流体 充满管道和节流装置 . In order for the fluid to continuously flow through the pipeline , there must be enough fluid to fill the pipeline and the throttling device ;

.流体流经节流件时 可能 发生 交叉 ④ When fluid flows through the throttle , no crossover is possible .