REFLECTOR: Low Fuel Warning Sensor False Reading: SOLVED?

[Tom]

What’s the part number for this sensor? This link took me to page with multiple choices of sensor types.

Thanks,
Tom


On Apr 28, 2014, at 10:55 AM, Brian Michalk <michalk at awpi.com> wrote:

> An update to those of you using an optical fuel level sensor.
> 
> I had installed the Carlo Gavazzi sensor from McMaster Carr ( http://www.mcmaster.com/#liquid-level-sensors/=rqf988 ) because it's a solid state optical sensor that should never wear out.
> 
> I have had problems with it falsely indicating a low fuel situation in the sump.  Finally yesterday while flying I deduced that whenever I flew west towards the sun, the low fuel light would illuminate, and when I flew east away from the sun, the light would extinguish.
> 
> The manual does say the device doesn't work in sunlight, but I never considered bright light to be the culprit.  I am going to fly with the sump covered with material to confirm my suspicions.  If confirmed, I will be painting the sump tank so that sunlight will not penetrate the sump.
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