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Re: Capacitance fuel level sending unit.

Subject: Re: Capacitance fuel level sending unit.
From: bizzarro@easynet.co.uk
Date: Fri, 5 Oct 2001 15:57:24
Hi Steve

I don't know who makes your unit, but what I do know is that you 
should calibrate it using the type of fuel you eventually intend to 
use. We have the Avelec cap. gauge and it has to be calibrated for 
use with either leaded or unleaded fuel. So for that reason alone I 
would suspect that your unit is no different, and that water is not a 
useful substitute. 

Also there have been reports that the new tanks, that are not 
supposed to need to be filled with fuel before fitting, actually do 
expand, and to that end I would prefill the tank with a few gallons 
of fuel, mark two points on the tank, slosh fuel around each week and 
measure distance between the points both now and after a few weeks. I 
would guess that the tank will have stretched by a few percent. (Ours 
did) 

Once the tank has swolen to its normal operating size, I would 
calibrate the fuel gauge.

And epoxy resin does stick to the tank despite what the manual says.

Cheers

Ed


Quoting Steve Hagar <hagargs@earthlink.net>:

> 
> I just received a capacitance level probe  from Europa.  There 
> was not any documentation with it.  The unit's head is about 3" in
> diameter 
> with  what appear to be 3 very small LEDs and 2 transistors on top. 
Some
> 
> questions:
> 
>  
> 
> Three  wires?  Red = +DC?  Black= -DC?  
> Yellow=capacitance value?
> 
>  
> 
> LEDs on top, what do these indicate?
> 
>  
> 
> Unit  looks like it mounts into the top of the tank like a cork.  
> Drill a proper sized hole and just shove it in?
> 
> There are holes around the periphery of the head.  Use some self 
> tapping screws with some sealant to  hold the whole mess 
> in?  
> 
>  
> 
> Most optimum location to install this into the tank at?
> 
>  
> 
> Calibration routine? Is water ok to use in lieu of gas for first 
> shot?  etc. . .etc
> 
>  
> 
> Is there any preferred  gauge to use with  this unit?
> 
>  
> 
> Is there any one out there who has experience with this?  Who makes 
> it?  Any reliability concerns?
> 
>  
> 
> Any info would be much appreciated the tank has been sitting  
> around for over a month waiting to be installed until after the 
probe
> has been 
> put in.
> 
>  
> 
> Thanks a bunch,
> 
>  
> 
> Steve Hagar
> 
> A143
> 
> Grounded in class B airspace
> 
> Mesa AZ 
> 
>  
> 
> --- Steve Hagar
> 
> --- hagargs@earthlink.net 
> 
>  
> 


/////Eddie Hatcher Bill Lams Nick Crisp///////
///SouthEastLondonFlyingGroup/////////////////
www.crispsite.flyer.co.uk/newropa.htm


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