How to calculate the height of a single-flange level gauge
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There is a vertical storage tank with a diameter of 7 meters and a height of 9 meters. There is a single-flange differential pressure level gauge installed on the tank; the measurement height indicated by this gauge is 8.6 meters (this is because the gauge is 200 mm above the bottom of the tank, and there is another 200 mm of height up to the overflow opening, so the measurement height specified for the gauge is 8.6 meters). If the level of the material decreases by 10% per hour, then in order to calculate the volume of material per hour, I need to know whether this 10% decrease should be calculated based on 8.6 meters or 9 meters. In other words, is the decrease in level 0.86 meters or 0.9 meters? Thank you!
The actual measurement range of the gauge is 0–8.6 meters; for those with a single flange, the specific operating range of the gauge can be determined by considering the density of the medium contained in the tank. 10% per hour? If there is a range specified, it’s entirely possible to determine how much the liquid level has dropped by observing the change in differential pressure over one hour; once the height change is known, it’s easy to calculate the volume. It really doesn’t matter whether it’s 0.86 or 0.9; of course, if you insist on having a specific number, then it’s 0.86. For example, if the tank contains water, the pressure difference corresponding to one meter of water is around 10 kPa. If the pressure difference measured by the transmitter decreases by 10 kPa, that means there’s one meter less of water in the tank. With the diameter and height known, the volume should be clear, right?
It must be calculated based on the set range