REFLECTOR: Flowscan plumming

[Andrew Ellzey]

Alex,


Not to but in, but there is a lot of documentation on the flowscan sensors, 
that says that in order to get the most accurate readings, there shouldn't 
be any abrupt bends coming in or out of your Flowscan sensor. I found several 
STC's and articles showing proper pluming to correct fuel flow discrepancies. In 
most cases operators or the STC holder installed specific lengths of Aeroquip 
hose on the inlet and outlet of the sensor. The issue is turbulence of the fuel 
through the sensor. The use of sweeping bends and certain lengths of hose in 
and out of the sensor seems to be the key.

I'm not flying yet, so I haven't been able to test my set up, but I considered 
all of this data when making my pluming through my sensor. If an STC holder 
using the flowscan sensor had problems, I would say that the data is valid. My 
results are yet to be determined.

I have attached two documents for your review if you or anyone else is 
interested.

Andy Ellzey




________________________________
From: Alex Balic <velocity_pilot at verizon.net>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Sent: Tue, March 15, 2011 7:52:30 PM
Subject: Re: REFLECTOR: tube flare question


I am pretty sure that the tool Matt has allows the screw to turn but the cone to 
just push against the tube causing the finish that you see on the picture, the 
aviation flare tools lock the cone to the screw, so that it burnishes the flare 
as it forms it- I prefer to use the white grease on mine, but any lube will work 
I suppose.   I have been out working with the tool the past couple of days to 
re-orient the flow sensors on my fuel system, since Flowscan claims that they 
will only work properly if horizontal with the wires facing up -  This is making 
my fuel routing a bit more complicated…..
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