What is a common use for hydrostatic pressure in level measurement?

Hydrostatic pressure is commonly used in level measurement due to its direct relationship with the height of a liquid column above the measurement point. As the level of the liquid increases, the hydrostatic pressure at a given point in the fluid also increases. This property allows for the calculation of the liquid level based on the pressure measurement using the formula that relates hydrostatic pressure, fluid density, and the height of the liquid column.

In practical applications, pressure sensors or transmitters are utilized to gauge the hydrostatic pressure at the bottom of a tank or vessel. By knowing the density of the liquid and the pressure measurement, the level of the liquid can be accurately determined. Therefore, hydrostatic pressure is an effective and widely-used method for measuring liquid levels in various industries, including water treatment, oil and gas, and pharmaceuticals.