Pump Protection - Gladiator Pump Protection Switch
It can also be used to detect the presence of liquids to ensure the pump will never run dry.
Principle of Operations
The probe of the Pump Protection Switch forms one plate of a capacitance circuit, with the vessel wall making the second plate. The dielectric constant of the product between the probe and the vessel wall will cause a change of capacitance as the level approaches the probe. The change is detected, amplified and used to switch a relay for indication or control purposes. A special circuit is used to ignore product build-up between the sensing probe (active element) and guard, and also between the guard and vessel wall.
Primary Area of Application
The switch has immunity to build-up and monitor materials with a wide range of dielectric constants, so the system is applicable to a large variety of liquids.