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MGL Avionics
Fuel management FF-2 & FF-4
Install & User’s manual
© 2002-2007 MGL & Delta Omega
www.delta-omega.com
Page 7, june07
Speed
Enter your aircrafts cruising speed. This value will be used to calculate the fuel range, i.e. how far
you can fly with remaining fuel at zero wind speed. For this calculation, your current remaining fuel,
your current fuel flow and the speed entered here are taken into account.
You can easily change the speed during flight to reflect changes in ground speed or cruising
speed.
Use this function with care and do not use it to extend your range. You must at all times
have a secondary indication of available fuel. Note that flow senders and level senders may
be subject to malfunction that may result in incorrect fuel levels being displayed or
calculated.
Level1, Level2
This function is used to manually enter your current fuel level after fueling or defueling your aircraft.
This function is only available if you have a mode selected where fuel level is calculated from fuel
flow.
Note that it is good airmanship to take into account a “silent” fuel reserve. For example, if you have
a 50 liter tank and you fill it, enter 40 or 45 liters as your available fuel. Also view the text on “fuel
tank size” below.
Accu1, Accu2
These entries show the amount of fuel used since the accumulator was last reset to zero. To reset
the accumulator simply move the highlight over the accumulator with the
and
keys, and
press the center menu
key.
Contrast …
This function allows you to change the display contrast to your liking. You can select values from
about 20 to 45. (Can vary depending on display type).
BL …
This function allows you to switch the display backlight on or off.
Mode …
Select the operating mode of your instrument, for example FF+CTT.
Each “
F
” stands for a fuel
F
low sender.
Each “
T
” stands for a fuel
T
ank level display.
“C” means “
C
alculated fuel level”.
“P” means “
P
hysical fuel level” (tank level sender).
