Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml
Date: Tue, 11 Jun 2002 14:09:36 -0400
Message-ID: <redirect-1290316@logan.com>
From: RWolf99@aol.com
Subject: Capacitance Fuel Measurement
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I understand that the problem (feature?) of getting highly inaccurate 
readings from a gasoline capacitance fuel probe that is submerged into a gas 
tank with a puddle of water in it is not unique to home-designed systems.  
This is characteristic of all of them due to the capacitance difference 
between gas and water.

I wouldn't bother incorporating electronic features to remove that 
characteristic.  Remove the water instead with your fuel drain.

I might actually consider this a "feature", since you might be able to detect 
water in the tank that way.  However, I suspect you'd have rough-running (or 
non-running) engine problems long before there's a big enough puddle to 
engage the probe.

- Rob Wolf