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Re: REFLECTOR: Fuel gauges

I am looking at another approach to this idea.  There has been many things
done with ultrasound.  Anyone given this a thought?  I have a contact that
has done many studies on ultrasound.  Time to ask for his opinion.

Ultrasound should be able to penetrate glass and foam.  I have heard that
they use ultrasound to check fluids in large containers.

173 FGE

-----Original Message-----
From: Dennis Martin <dmartin@cougar.netutah.net>
To: reflector@awpi.com <reflector@awpi.com>; Martin A Hadley
Date: Monday, August 31, 1998 11:26 PM
Subject: Re: REFLECTOR: Fuel gauges

>Martin Hadley wrote:
>>Why not install a float switch, like the one used in the sump tank, at
>>the level you wish to be notified of? One switch, one lamp. The ole
>>K.I.S. (Keep It Simple) principle. No electronic circuits that might be
>>susceptible to low voltage or high voltage spikes.
>>If you are concerned with the light flickering on and off as fuel sloshes
>>around, or in turbulence,  a simple one resistor / one capacitor circuit
>>(Known as an R/C time constant) can be used to eliminate, or at least
>>greatly reduce, the flickering.
>I guess you're telling me a fuel sender that "reads through foam" is not as
>good, or at least no better, than the internal sensor.  I was simply
>looking for a way to avoid penetration into my fuel strake.  Oh well,
>speaking of KISS, maybe I'll just live with the site gauges.
>Thanks for the advice,
>Dennis Martin