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1. 08:48 PM - Re: Princeton 18-5B-5S Fuel Senders Won't Calibrate (Speedy11@aol.com)
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Subject: | Re: Princeton 18-5B-5S Fuel Senders Won't Calibrate |
Matt,
That is exactly what I advised you about months ago. The Princeton probes
do not calibrate properly.
I've filled and drained my tanks seven times. They still will not
calibrate. I recommend builders use anything other than Princeton probes. And
try to get them on the phone to talk about it. Good luck with that.
Mine are also prosealed in. Still, I'm tempted to rip them out and throw
them in the trash and replace them with floats.
What I'm doing now is gradually calibrating the fuel flow transducer to get
it as accurate as possible and then I'll simply keep track of how much has
been burned or how much is remaining. Since I used a both selection on my
fuel selector, it is easier for me to know about how much remains in the
tanks. It will be a little more challenging for you since you'll be
switching left and right.
I've recommended for the past year that nobody buy the Princeton probes -
and I still recommend against them.
Stan Sutterfield
I installed Princeton 18-5B-5S Fuel Senders in the left and right fuel
tanks with
Proseal (see attached). Last week I installed the wings permanently and
today
I torqued all of the fuel lines from the wings to the fuselage. I got 21
gallons in 5.25 gallon increments ready to calibrate the 5-set point
Princeton
probes today. They both powered up fine and started flashing the left
light
indicating the Empty set point. I pushed the button once per the
calibration
instructions to go to the 1/4 level. Instead of getting the #2 led
flashing,
I get the all three LEDs flashing sequence indicating that probe "Can't be
calibrated"!!!
>From the installation manual: CAL Error (three flashing LEDs) - The probe
failed
to calibrate. Possible causes: water in the tank (NO), inner brass rod is
shorted to the outside aluminum tube (PROBABLY), Alcohol in the fuel (NO),
trying
to calibrate full first instead of empty (NO), or the probe electronics
have
failed (MAYBE)." Yeah, you read all that right.
The best part of this story is that I Prosealed these babies in, installed
the
wings, and now discover that both probes are defective or what even. How
can
this fricken be? Its too late in the game for this. Replacing these
stupid probes
is going to be a major pain not to mention the fact that likelihood of
leaks
are now going to be high. I just can't believe it. This is so
frustrating.
Why didn't the manual advise to check this long before now? Like before
they were installed, during installation, and right after installation
before
the Proseal cured?
Oh, did I mention BOTH are bad? How can this be... How disheartening.
Please
tell me I'm just mis-reading the calibration instructions...?
I'm going to go out on a limb here and say avoid these piles of garbage...
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