From: Tim Hubberstey
Organization: Marmot Engineering
X-Mailer: Mozilla 4.79 [en] (Windows NT 5.0; U)
Subject: Re: Furnace oil tank safety alarm
Date: Tue, 03 Sep 2002 01:57:22 GMT
NNTP-Posting-Date: Mon, 02 Sep 2002 19:57:22 MDT
> Watching TV recently, I saw the disaster that can occur when a tank fails
> and empties in a basement. Damages can cost in the range of $200 000.00
> Nowhere in the report did I see any existance of an alarm to warn when the
> tank level goes down at a too fast rate or while the furnace is not
> I know some oil companies have remote sensing of the remaining oil for
> delivery scheduling. If it produces an analog level reading, not min/max,
> not to use this sensor for alarm purposes is plain stupid. Anyhow, a
> capacitive sensor can do it quite cheaply.
> I would like to know what anybody have to say about this idea. Also some
> suggestions for cross posting.
I would avoid any method that requires you to put something inside the
tank. I believe insurance companies would jump at the chance to blame
any fire that might occur on your in-tank sensor. How about a strain
gauge under one of the legs of the tank to keep track of the weight?
Better yet, how about moving the tank outside the house so that leaks
won't end up in the basement at all? An alarm does you no good if you
aren't home to do something about it. Back when I was a kid our house
had an outside fuel oil tank, as did all our neighbors.
Tim Hubberstey, P.Eng. . . . . . Hardware/Software Consulting Engineer
Marmot Engineering . . . . . . . VHDL, ASICs, FPGAs, embedded systems
Vancouver, BC, Canada . . . . . . . . . . . http://www.marmot-eng.com