Process Engineering Division – Instrumentation and Automation Section – Daily Topics – Topic No. 2021-01-25
Thread Content
Process Engineering Division – Instrumentation and Automation Section – Daily Topics – Topic No. 2021-01-25: Discussion question: 368. What impact will minor leakage in the balance valve of a orifice flow meter have on the flow measurement results? What’s the reason?
If the balance valve of the orifice flow meter leaks slightly, the measurement results will be lower than accurate. Because micro-leakage causes the pressure difference across the orifice plate to decrease.
If the balance valve of the orifice flow meter leaks slightly, the measurement results will be lower than accurate. Because micro-leakage causes the pressure difference across the orifice plate to decrease
If the balance valve of a orifice plate flow meter leaks slightly, the measurement results will be on the low side. Because micro-leakage causes the pressure difference across the orifice plate to decrease.
The measurement result is low; internal leakage in the balance valve causes a decrease in pressure difference
The slight leakage in the balance valve reduces the pressure difference between the positive and negative pressure sides, resulting in a lower reading
A slight leak in the balance valve can cause the measured differential pressure to be low, resulting in an underestimation of the flow rate; the flow measurement is particularly inaccurate at low flow rates.
The measured value will be on the low side. There is a slight leak in the catheter on the positive pressure side, so the measured positive pressure value is slightly lower
A slight leak in the balance valve of a orifice plate flow meter results in lower flow measurement values, as the slight leak causes the differential pressure across the transmitter to decrease, thereby reducing the flow rate
A slight leak in the balance valve reduces the pressure difference between the positive and negative sides, resulting in a lower reading on the instrument.
If the balance valve of a orifice plate flow meter leaks slightly, the measurement results will be on the low side. Because micro-leakage causes the pressure difference across the orifice plate to decrease.