Process Engineering Division – Instrumentation and Automation Section – Daily Topics – Topic No. 2021-01-24
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This post was last edited by It will be better tomorrow on 2021-1-24 at 15:09 in the Process Engineering Section – Instrumentation and Automation Category – Daily Topics – Topic No. 2021-01-24. Discussion topic: 367. What impact will minor leaks in the upstream and downstream pressure guiding tubes of orifice flow meters have on the flow measurement results? What’s the reason?
The flow rate is lower than the actual value because the pressure difference between positive and negative pressures has decreased
The flow rate is lower than the actual value because the pressure difference between positive and negative pressures has decreased
The measured value will be on the low side; if there is a slight leak in the catheter on the positive pressure side, the measured positive pressure value will be slightly lower. As a result, the pressure difference compared to the negative pressure side is also lower. Since flow rate is proportional to the square root of the pressure difference, the flow rate value will definitely appear low
The flow rate is lower than the actual value because the pressure difference between positive and negative pressures has decreased
Is the flow rate lower than the actual value? That’s because the difference between positive and negative pressures has decreased
Leakage in the main pipe reduces the pressure difference, causing the flow rate reading to decrease.