Dynon Avionics FlightDEK-D180, Installation Manual

Page: 27 / 154

Transducer Installation
Fuel Flow Sensor
Pin Color Function
13 Black Ground
14
Yellow (or
white)
Fuel flow
input
15 Red
Fuel flow
power
(14V)
Dynon Avionics supplies two different fuel flow
transducers:

Floscan 201B (Dynon P/N 100403-001)

Electronics International FT-60 (Dynon P/N 100403-
003)
GENERAL PLACEMENT RECOMMENDATIONS
When placing either sensor, ensure that the three wire leads
are pointed
straight up
. A filter should be placed upstream from the sensor to screen out debris.
Placement of the fuel flow sender relative to other items in the fuel system like fuel pumps is left
to the builder. The manufacturer of the fuel flow sender does not make strong recommendations
on this point. It is not uncommon, though, to place the sender downstream of any auxiliary
electric boost pumps but upstream of the engine driven fuel pump. For best measuring
performance, the fuel should travel uphill by one to two inches after leaving the fuel flow sender.
Due to vibration issues, never connect the sensor directly to engine.
Do NOT use Teflon tape when screwing in any of the fittings.
FLOSCAN TRANSDUCER INSTALLATION
The FloScan fuel flow transducer has ¼” female NPT threads
at both the inlet and outlet. Only use ¼” NPT fittings to match.
When installing, do not screw fittings more than two full turns
past hand tightened. The torque should not exceed 180 inch-
lbs.
¼” NPT Female
Make note of the numbers on the tag attached to the fuel
flow sensor.
You will need it in the Fuel Flow Configuration
section on page 6-14.
EI “RED CUBE” INSTALLATION
The Electronics International “Red Cube” FT-60 flow transducer has ¼” female NPT ports. Do
not exceed a torque of 300 inch-lbs when installing fittings into the transducer. The fuel line on
the outlet port should not drop down after exiting the transducer. This configuration can trap
bubbles in the transducer, causing jumpy readings.
The inlet port, outlet port, and flow direction are marked on the top of the FT-60.
ROTAX PLACEMENT RECOMMENDATIONS
If installing on a Rotax 912, review the following page for recommendations specific to these
engines.
FlightDEK-D180 Installation Guide 3-9