REFLECTOR: Low Fuel Warning Sensor False Reading: SOLVED?

Brian Michalk michalk at awpi.com
Mon Apr 28 13:23:02 CDT 2014


Correct.  The back seats are currently not installed.

On 4/28/2014 11:42 AM, Dave Philipsen wrote:
> Are you flying without the back seat?
>
> Dave Philipsen
> Velocity STD FG
> N83DP
>
> 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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