E37 Controls
E37 controls are available in several versions with a choice of two or three electrode sensing and SPST or SPDT output relay.All versions sense the electrical conductivity between a set of electrodes and change the state of the output switch in accordance with a change in conductivity.Stainless steel electrides are used and L56 sensors have been specifically designed to be compatible with E37 controls. The electrodes can be used to measure the thickness of ice or control the level of liquids.