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Hylander wrote "You would think in the 21st century someone would come up with an answer. "
There are answers but not at a price your average boater would be prepared to pay. A time of flight ultrasonic level gauge, for example, would resolve to better than 1mm liquid height or a radar unit might even be better than that. However, a simple single transducer and display transmitter would more likely be in the £1000+ bracket and not tens or hundreds of £'s.
The problem is waste tanks are generally large surface area but shallow. Therefore, a tiny increment in liquid height is a significant volume of liquid and to measure small level changes requires decent technology which costs money. A diesel tank, conversely, is usually very deep in comparison to a small surface area and a simple float and potentiometer device can determine level changes of several cm with acceptable accuracy and also be produced economically.
This message was edited by L'sBelles on Sep-4-21 @ 11:03 PM
The sender on this unit has a "full" probe about 2 inch long so on most tanks this gives some lee way. On our tank this was probably 15 to20 % volume so unless it was after a particularly good night on the ale not a great panic to empty.
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annville
Sep-04-2021 @ 12:30 PM
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