Suitable for most applications that involve checking a conductive liquid in a tank, Hawk’s Gladiator conductivity switches include high- or low-level alarms, constant level control, pump control and empty tank detection. A low-voltage AC signal is applied between the probe electrode and the tank wall (or reference electrode in case of a non-metallic tank). When the liquid comes in contact with the electrode tip, a conductive path is established between the sense electrode and the metallic tank wall/reference electrode. Current flow due to the conductive path is sensed, amplified and used to switch a relay for indication or control purposes. The switches have no moving parts and are maintenance-free.
Hawk Measurement America; 978-304-3000; www.hawkmeasure.com