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Old 08-16-2014, 03:01 PM   #1
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Tank Sensor Margins

Just a quick question about tanks and the built in sensor margins. Is there an industry standard concerning the amount of margin remaining when the 4th red light comes on.


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Old 08-16-2014, 03:06 PM   #2
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Old 08-16-2014, 03:19 PM   #3
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Be thankful if they work at all. I've got to pull my panel off and see if somethings obviously wrong...all of my tanks suddenly went to FULL even though I know they're practically empty. To answer the question, no standard even from identical unit to unit. Depends on where the sensors were mounted that day from what I can tell. It's just one of those things you have to just get a feel for.
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Old 08-16-2014, 04:03 PM   #4
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"Full" is never at the top of the tank. Here are the sensors on my front gray tank (40 gallons). That top "Full" sensor is about 80% from the top of the tank so I have another 8-10 gallons or so to go, plus the piping, until it backs up into the shower.

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My rear black tank is basically identical.

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