Holding tank sensors

I quit looking at the gauges years ago..... The black tank is always wrong but I'm never gonna fill that up in a weekend and the shower, well I just dump it when I think its time or when the wife or kids yell it's backed up.

Hi,

These work better--but still not perfectly: http://www.bestconverter.com/SeeLevel-Gauges_c_108.html

After you use your rig for a while you get a good handle on how long it takes to fill the tanks. Generally the grey tanks work pretty good. The black is pretty wacky. I have thought about upgrading sensors but for me far to much work and money for the benefit.

Horst Dynamics makes extra long probes that stick into the tank past the slime on the inside of the tank. I put a set in and so far they work. The slime conducts and these probe are supposed to eliminate this.
Ed

Too much money for other probes...I'm not that concerned with levels

Toilet 'burps'...time to dump
Sink/shower starts to drain slower than usual...time to dump

Water pump goes 'burruppp'.......should have put more water in tank

If weekending.....dump when leaving
If boondocking....figure about 5-6 days then find place to dump
If at FHU CG......who cares

Haven't even pushed the monitor buttons in at least 6 yrs. and we FT :B

I installed a SeeLevel II system to replace the broken OEM system that was in my coach when I bought it in 2008. The installation was pretty easy using the existing tank wiring, and the system has worked flawlessly. The percentage readings are much more accurate than the simple OEM style readings, which can be particularly important when boondocking. I give the black tank a good flush with a tank wand once or twice a year, but tank wall crud buildup has never affected the readings as far as I can tell, although I know it can if it gets thick enough. For me, the SeeLevel system has been a very worthwhile investment.

having a similar problem with my black tank. Tried leaving the tank about half full when I made a run to try to get the fluid movement to clean/knock loose the sludge/paper, etc., but didn't help. Thinking about hitting the inside with a pressure washer (don't have a wand cuz I have the sewer flusher option). Any downside to that? Other than the obvious, i.e. splashback of unpleasant stuff?

Cajun Bill wrote:
having a similar problem with my black tank. Tried leaving the tank about half full when I made a run to try to get the fluid movement to clean/knock loose the sludge/paper, etc., but didn't help. Thinking about hitting the inside with a pressure washer (don't have a wand cuz I have the sewer flusher option). Any downside to that? Other than the obvious, i.e. splashback of unpleasant stuff?

I did that twice and it worked for a while and then the crud built up again and the readings were wrong again.

I had to make an L using plumbing parts so the washer could be directed to the tank side.The hole in the cap on the L output has to be really small. Less than 1/8 inch - maybe 1/16.

By the way I have the non-contact sensor system Winnebago went standard with in 2005. A lot of people say they have no problem with the system. I think us full timers have more crud build up than weekend warriors.

Our false readings ended when I installed "Tornado" tank rinsers in each tank. When I dump the tank and it doesn't read empty as it should I connect a hose to the rinser and in less than a minute it reads as it should.

Well, here I come with another dumb question where the answer is obvious. I have found that in areas I am not yet familiar with I quite often make the wrong assumption. Sooo. In my 97 Gulf Stream Conquest there are two long tanks about 6" deep that rum from one side of the camper to the other. Im sure one is black and other is grey water.

Reading the posts it sounds like the problem with accurate readings on the tanks is caused by crud slime and subsequent corrosion. The products mentioned work to flush the yuck out and help the sensors get better readings.

My tanks on the end opposite to the dump valve each have a hose fitting. There doesn't appear to be any valve, they are just there so I assume (dangerous particularly with this application) that there must be a backflow valve. Is this fitting so I can attach a hose to the tanks and flush until clear? Would be cheaper than buying equipment I may not need and screwing on a hose is my kind of installation!

Thanks for the input
George