This is one of the most common applications when it is required to control the level of a well. Despite this, it never hurts to know in detail the operation of the conductive relay and the probes that are responsible for it. Below are the links to the pages of our website related to these products and to other documents that I am sure you will find useful: CONDUCTIVE LEVEL RELAYS: Level relay PNSA: Conductive probe NS: INSTALLATION TIPS: EXAMPLE SCHEME: