NS129 / NS132 / NS139 NCC National Controls Corp Liquid Level Boards
415
Free
- NS129 / NS132 / NS139 NCC National Controls Corp Liquid Level BoardsIn Models NS129 and NS139 (Pump Down) the output relay is de-energized until the liquid reaches the high probe. When liquid touches the high probe, the output relay is activated until the level drops below the low probe.In Models NS132 (Pump Up) the output relay is energized until the liquid reaches the high probe. When the liquid touches the high probe, the output relay is de-activated until the level drops below the low probe.If the tank is non-conductive, a third (common) probe must be installed at a level where it will always be submerged.
