Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question dated 2020-09-30
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Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question from 2020-09-30: Discussion question: 251. What will happen if the direction of the orifice plate is reversed? Try to analyze the process by which this phenomenon occurs. (Extra points for thorough analysis)
Since the orifice plate is a throttling element, its measurement principle is determined based on the relationship between the pressure difference before and after it and the flow rate. The greater the pressure difference, the greater the flow rate. When installed reversely, structural reasons cause the measured pressure difference to decrease, resulting in a lower flow rate reading.
If the orifice plate is installed in reverse, the differential pressure decreases, resulting in an underestimated flow rate. Since the orifice plate is a specially fabricated throttling device, the side ahead of the throttling surface is at positive pressure while the side behind it is at negative pressure. Installing it in the reverse direction will result in a lower pressure reading on the positive-pressure side, which in turn leads to a lower differential pressure.
Since the orifice plate is a throttling element, its measurement principle is determined based on the relationship between the pressure difference before and after it and the flow rate. The greater the pressure difference, the greater the flow rate. When installed reversely, structural reasons cause the measured pressure difference to decrease, resulting in a lower flow rate reading.
Since the orifice plate is a throttling element, its measurement principle is determined based on the relationship between the pressure difference before and after it and the flow rate. The greater the pressure difference, the greater the flow rate. When installed reversely, structural reasons cause the measured pressure difference to decrease, resulting in a lower flow rate reading.
It can’t be used anymore; the data flow is inaccurate.
If the direction of the orifice plate is reversed, the differential pressure across the orifice plate will decrease, resulting in lower measurement values. This may be due to an error in the specifications provided by the manufacturer, or it could be caused by incorrect installation.
Since the orifice plate is a throttling element, its measurement principle is determined based on the relationship between the pressure difference before and after it and the flow rate. The greater the pressure difference, the greater the flow rate. When installed reversely, structural reasons cause the measured pressure difference to decrease, resulting in a lower flow rate reading.
The throttling element of a orifice plate flow meter includes an annular chamber orifice plate, nozzles, etc. A orifice plate flow meter is a differential pressure generating device used for measuring flow rates; it works in conjunction with various differential pressure gauges or transmitters to measure the flow of different fluids in pipes. The orifice in a orifice plate flow meter is a throttling element, and its measurement principle is based on the relationship between the pressure difference before and after it and the flow rate. The greater the pressure difference, the greater the flow rate. When a orifice plate flow meter is installed in reverse, the measured pressure difference decreases due to structural reasons, as a result of which the flow reading indicated by the meter becomes lower.
Since the orifice plate is a throttling element, its measurement principle is determined based on the relationship between the pressure difference before and after it and the flow rate. The greater the pressure difference, the greater the flow rate. When installed reversely, due to its structural characteristics, the measured pressure difference is reduced, resulting in a lower flow rate reading
If the orifice plate is installed in reverse, the differential pressure decreases, resulting in an underestimated flow rate. Since the orifice plate is a specially fabricated throttling device, the side ahead of the throttling surface is at positive pressure while the side behind it is at negative pressure. Installing it in the reverse direction will result in a lower pressure reading on the positive-pressure side, which in turn leads to a lower differential pressure