REFLECTOR: Low Fuel Warning Sensor False Reading: SOLVED?

[Tom Falls]

Thanks Brian.  So how does this sensor mount to the sump tank?  Is it 3/8" NPT or 3/8" straight thread? If straight thread, how do you seal it to prevent leaks?

Thanks,

Tom

> On Apr 28, 2014, at 10:35 PM, Brian Michalk <michalk at awpi.com> wrote:
> 
> I didn't realize the URL didn't point to the sensor.
> 
> http://www.mcmaster.com/#4949k33/=rqo9c8
> 
> Mine is the 4949K33.
> 
>> On 04/28/2014 06:35 PM, Tom wrote:
>> 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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>> 
>> 
>> 
>> 
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