Forum Discussion

Rmack1's avatar
Rmack1
Explorer
Mar 22, 2013

tank sensor accuracy

I'm a newbie, and after my fifth trip, I've noticed that my water tank sensors are different. At least I think they are.

What I mean is; the waste tanks tend to read high. In other words, they read being full a good deal before they actually are. On the other hand, the potable water tank seems to read low, just like a car fuel gauge. It reads low, indeed empty, a bit before actually being empty.

This would sort of make sense, so that the hapless RV owner would be prompted to correct the situation as it was developing, rather than wait until it was too late. I just want to make sure this is what I'm seeing.

I'm sure my black tank reading full just after I dumped it, RIGHT after doing a three day full sensor cleaning flush, with lots of fresh water is due to a chunk of toilet paper (marine only!) that has got stuck on the sensors.

Just shoot me now!
  • I clean my black tank like im obsessive compulsive. The gauge still reads wrong. I dont care, you can look down the toilet and see what your status is.
  • Mine black tank sensor is 100% accurate. It's the tank contents that never matches the gauge. In about a week they match.:B:B
  • They are useless, but make for a high tech. look on the wall above the counter.
    If you have a new trailer, take a look at them at the dealers because that is the last time they have a correct level reading.

    Jack L
  • Sadly the guages lie like politicians at budget time. I have found after installing permanant sprinkler like tank flushers the readings are more truthful. Problem is they seem to get gunked up. best of luck.
  • Common topic on here. General consensus is that they are basically useless for the most part. I've been full timing for 7 years and just deal with it!

    Mine you can take the control panel off the wall and there are little adjustment screws that you can fiddle with to some degree of success, but in the black tank the sensor design pretty much makes them inop, as you say they get TP and such globbed on them.