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 > Black holding tank censors

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ejd43

Pennsylvania

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Posted: 07/22/19 05:25pm Link  |  Quote  |  Print  |  Notify Moderator

Does anyone out there have any tips to help my black tank censors read more accurate? I can empty it out totally and the gauge still reads that it's full. Its driving me nuts that I dont have an accurate read, and makes it difficult to gauge when it's full.

SoundGuy

S Ontario

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Posted: 07/22/19 05:53pm Link  |  Quote  |  Print  |  Notify Moderator

Your tank sensors mount to the inside of the tanks and clog, especially the black tank. The solution is to replace them with sensors that read from outside the tanks.

SeeLevel Tank Gauges


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Big Katuna

Deland, FL

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Posted: 07/22/19 05:59pm Link  |  Quote  |  Print  |  Notify Moderator

Or better still, ignore them.

If you have hookups use lots of water and dump every three days.

Look down the toilet, too.


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MFL

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Posted: 07/22/19 06:06pm Link  |  Quote  |  Print  |  Notify Moderator

I always add water, about 3-4 gals down the stool after dumping, then traveling, to wash the sides by sloshing. My sensors have worked well in all my RVs.

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DutchmenSport

Indiana

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Posted: 07/22/19 06:14pm Link  |  Quote  |  Print  |  Notify Moderator

Same as MFL here. Dump your tanks, add a few gallons of water. Add some Dawn Dishwashing Liquid or Laundry Detergent, travel to your next destination. If you do this every time you travel, sensors will work.

Do this in combination with your black tank flusher, backflushing from your grey tank, and even use the toilet wand on the end of a garden hose occasionally, all this will help keep your tank clean and sensors responding better.

ktmrfs

Portland, Oregon

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Posted: 07/22/19 06:16pm Link  |  Quote  |  Print  |  Notify Moderator

1) ignore them
2) replace with horst miracle probes (better but not foolproof)
3) Install and external sensor system like the SeeLevel or similar. (Almost foolproof, to much buildup from bad habits can upset even these)


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Lwiddis

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Posted: 07/22/19 06:27pm Link  |  Quote  |  Print  |  Notify Moderator

“Its driving me nuts that I dont have an accurate read, and makes it difficult to gauge when it's full.“

Why? Ease up! Inside the tank gauge works sometimes. The outside the tank works better. Gauge from the fresh water tank level and estimate.


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Big Katuna

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Posted: 07/22/19 07:44pm Link  |  Quote  |  Print  |  Notify Moderator

Previous poster.

I don’t know how I have been rving in every version of every RV ever made for 40 years and successfully ignored tank sensors.

dave17352

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Posted: 07/22/19 09:20pm Link  |  Quote  |  Print  |  Notify Moderator

Black tank has a sensor you can't miss. When you flush and see water a inch from the flapper you know its time to dump! I am with those that don't use the sensors. The black tank for sure. In all my RV's it has become second nature to pretty much know where you at depending on how much fresh water you have left. The fresh water sensors have always worked well. No gunk in there. Black tank sensors have not worked well in any of my RV's.


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Ava

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Posted: 07/22/19 11:21pm Link  |  Quote  |  Print  |  Notify Moderator

I rinse mine with a wand that hooks up to a hose has a spinning head that goes through the toilet then in to black tank and flushes it out when needed. Cleans the tank and the sensors. It is available anywhere, Walmart, rv stores

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