Orifice Flow Meter is a Uni-Directional Flow Meter

[From:来自网络] [Author:admin] [Date:12-08-01] [Hit:]

Orifice flow meter is a uni-directional flow meter. It can’t be used on applications that require a bi-directional capability. This limitation is caused by the orifice dimension that has a bevel with a 45 degree angle. If the flow is reversed, then the pressure profile that will develop is different with the pressure profile of the normal orifices. This different pressure profile for sure can introduce some flow measurement errors. Further more, the orifice flow meter measurement reading is still reading a forward flow even though the flow is in reversing direction.

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