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5.3.2 Fuel Flow Meter
The BRÄUNIGER fuel flow sender is looped into the fuel line between engine and fuel
filter. For details see section 2.4.
WARNING! The fuel flow sender must be installed AFTER the fuel filter, so
that foreign matter and dirt in the fuel cannot block the sensor wheel. The fuel
flow sender MUST be installed in an angle between 60° and 90°
the longitudinal axis of the aircraft. The fuel must flow from bottom to top.
Please observe the mounting instructions in section 2.4!
The sender is designed in such a way, that even when the sensor wheel is blocked, the
engine still gets enough fuel for running. A fuel measurement is of course not possible
with a blocked sensor wheel.
The fuel flow sender transmits pulses to the ALPHA
ALPHAALPHA
ALPHAMFD according to the actual fuel
consumption. The ALPHA
ALPHAALPHA
ALPHAMFD converts these pulses to the fuel flow and fuel state
indication.
WARNING! After filling up the aircraft, the actual contents of the tank
must be input into the ALPHA
ALPHAALPHA
ALPHAMFD (see section 5.3.8). If the pilot forgets
to input this correctly, the fuel state indication is INCORRECT!
WARNING! IMPORTANT SAFETY INFORMATION!
The Fuel Flow Meter has been designed with very precise industrial
measuring devices. During practical tests and calibration trials it became
evident, that the entire system can be very precisely calibrated. But external
factors, such as temperature of fuel can negatively influence the precision.
Even different fuel versions with their inherent differences in viscosity can
degrade precision of measurement.
Although the fuel flow meter and fuel state are relatively precise, the pilot in
command must check the fuel prior to flight
enough fuel in the tanks for the planned flight. The fuel state indication of
the ALPHA
ALPHAALPHA
ALPHAMFD does not relieve the pilot from completing prudent
range calculations during flight planning!
The fuel flow meter and fuel state are only to be taken as additional
information for the pilot. Negative external factors, the incorrect operation
of the system or a break down of the ALPHA
ALPHAALPHA
ALPHAMFD can lead to the indication
of INCORRECT values!
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