B/W Floatless Liquid Level Detection Induction Control Relay Switch

While liquid level detection float devices applies the practical approach of utilizing the principle of buoyancy which depends mainly on a floating object to detect the liquid level in a reservoir that mechanically actuates a switching mechanism to manipulate an electrical switch output to control a water pump, a floatless counterpart which does not rely on mechanical float mechanism makes use of metallic rods immersed in the liquid which serves as electrode probes to detect the depth of the liquid level in the reservoir.