REFLECTOR: Low Fuel Warning Sensor False Reading: SOLVED?

[Ron N VelocityXLFG]

Yep sun light hitting sensor will turn it on!

Ron
On 4/28/2014 9:55 AM, Brian Michalk 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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