Problems with double-flange level gauges?
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A large tank uses a double-flange level gauge to measure the liquid level; later, since it was inconvenient to measure the pressure at the top, the location for measuring that pressure was moved downward. How can I change the range in the table header? ?
The 0% level calibration value is also at the lower end of the device. Because once the liquid level drops below the lower port (the liquid bag area), the measured differential pressure remains unchanged; thus, 0% cannot be calibrated to the measurement port after it has moved downward, and as a result the range stays the same. However, the amount of migration that needs to increase is equal to “the mm value of the downward opening” x (density of the medium – density of the filling fluid) @jiaguoyun @Use a larger bow for larger horses
At your current position, with zero liquid level, adjust the zero point; the negative migration amount is Pgh, where p is the density of the silicone oil inside the capillary, g is the local acceleration due to gravity, and h is the vertical distance from the flange surface.