Originally Posted by Privilege
I have a Sealand holding tank with three tubes suspended in the tank with floats at the end to measure the level of fluid. Each tube has two wires coming out the top of the tank. The wires have been cut and the display is missing. I therefore want to make my own simple light panel display but I cannot figure out how the circuit works.
I assumed that a hanging float would just interrupt a live (or negative) feed and that the rising float would complete a circuit similar to a float switch but this is not the case. I've put a continuity tester on the wires but they do not form a circuit either with the float up or down. Google
is not interested in helping and just wants to sell me a whole new system. Can anyone assist?
The wiring for the SCAD Profile gauges Scad Tank Monitors
is the same as the wiring for your SeaLand Tankwatch III (or whatever Dometic has re-named it)...the external sender is the only real difference. Scroll down to the instructions for the "Solo" unit for all the instructions you need to do what you want to do.
However, IMO you'd be better off buying
a whole new system with a sender that attaches to the outside of the tank. 'Cuz by the time you assemble all the components to make your own panel you'll prob'ly have spent more than 50% of the price
of the Solo panel...and, internal senders are ok for fuel
, but the animal fats in waste build up on 'em and clog 'em...making it necessary to remove the sending unit about every two years to clean 'em. Fun job.