Calculation of the liquid level in spherical tanks
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The spherical tank is equipped with a guided-wave radar level gauge; the density of the material stored in it is 1.1, and the diameter of the sphere is 12.5. The level indicated by the gauge in the spherical tank is 36% – how is this 36% calculated?
What is this h? The guided wave radar shows a liquid level of 36% – how is this figure determined?
What is this h? The guided wave radar shows a liquid level of 36% – how is this figure determined?
The principle behind radar measurement is as follows: Before use, if the terminal does not have the tank parameters set, then based on the radar’s maximum measurable value H, the measured height will be h’, and the ratio will be h’/H. Before use, the terminal is used to set the diameter and height parameters of the spherical tank. Based on the formula for the volume of a spherical cap: V = (π/3) × (3R – h) × h², the radar measures the liquid level height h’ inside the tank; by subtracting h’ from H, the value of h is determined. The feedback signal is then used to calculate the total volume minus the volume of the spherical cap, which is converted into a percentage value representing the liquid volume. It’s on a formula website; one needs to verify it oneself.
OP, what do you mean by that? The spherical tank shows a liquid level of 36% – does this level refer to height? Generally, a radar level gauge measures the height of the liquid level in a spherical tank.
Calculated inversely, liquid level = total tank height – distance from empty tank