I’m a newbie to this site, working for an engineering firm.
I’ve built a working cooling system with piping, valves, etc.
The electrical side consists of a raspberry pi 3 with temperature sensors, a 8-channel relay with fish tank heaters to control the temperature of three seperate vessels depending on set-points.
I’m afraid of a leak somewhere and the level dropping too low and the heaters melting the vessels (did I mention they are plastic?)
So, I want to build a simple level switch, as seen in this schematic
I want to know, as I’m a rookie with wiring (did I mention I’m a chemical engineer and not electric/electronic), if this circuit will work.
Thank you in advance