At a point the pumping At a point the pumping diaphragm fails, pumped > Chamber filled with driver fluid liquid enters the spill > Chamber filled with driver fluid diaphragm fails, pumped liquid enters chamber displacing > Outer the spill chamber, > Outer Pumping driver fluid. e leak > Pumping Chamber detector, working on the > Chamber displacing driver > fluid. e exchange of pumpage and driver senses the conductivity fluid displays a color change. is activates change in the sight tube, a warning light on the giving a visible signal. control box. e device Driver fluid should be can also be wired...