Soon after we had bought our Flagstaff in '07, I had installed a water tank monitor from RVelectronics.com.au. Nice unit, easy to install and wire, and it worked well enough. When we traded up to the '08 Niagara we knew we wanted a tank monitor, but we now had two tanks (three, really, but the black tank isn't really accessible and has a monitor, of sorts, on it) and hadn't been completely satisfied with the 1/4, 1/2, 3/4, readings.

We settled on the I-Series from Tech-Edge, which monitors up to eight tanks (liquid + propane) plus battery charge. It comes with everything needed to hook up three water tanks; propane tanks need to be equipped with a special sensor.

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Installation isn't quite as easy as the RVelectronics model, but then again you don't have to drill a hole in the tank! Since the gray water tank on the Niagara is only four inches tall, I didn't think the internal-style sensor would be all that much help, anyway. Installation of the I-Series involves adding strips of foil tape to the tank, a couple of inches apart. Each strip must equal at least 15 square inches, so on a shallow tank you end up with a good number of strips. A sensor, with a copper pad going to each strip, is attached, and a ground and two power wires get run to each tank.

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Up to that point, I had probably three hours in the install. That included cutting the mount into the cabinet and relocating the water pump switch to the panel. Calibration took another hour or so, but we can now monitor both tanks and the battery from one panel. The monitor shows percentages for the tanks, much better than 1/4, 1/2, etc., and has alarms that can be set to warn of low (or high) tank levels.

John