J.P. Instruments Fuel Scan 450M Pilots Guide - Manual (Page 17)

For Your Safe Flight Page 15
Fuel Measurement Units, Fuel Capacity, Alarm Limits
Fuel Measurement Units
Selects the units in all parameters where fuel quantity or fuel rate
is displayed. If you change this parameter, it does not change the
numerical value of the fuel tank capacity. You must do this
manually. For example if you change from gallons to pounds, the
tank capacity will be interpreted as 50 pounds rather than 50
gallons; the FS-450M will not convert 50 gallons to equivalent
pounds.
Main Tank Capacity
Enter the total capacity of the main tanks in the fuel flow units
selected. If you have tank tabs (but no auxiliary tanks) and
sometimes fill only to the tabs, set the main tank capacity to the
capacity up to the tabs.
Auxiliary Tanks
If you do not have auxiliary tanks or tank tabs, answer “No.” If
you answer “Yes,” you will be asked to input the capacity of the
auxiliary tanks in the fuel flow units selected. If you have tank tabs
and sometimes fill only to the tabs, set the auxiliary tank capacity
to the difference between full tank capacity and tab capacity. The
FS-450M does not differentiate fuel flow between the main and
auxiliary tanks; it tracks only total fuel in the aircraft.
Low Time Alarm Limit
Select the value of the time remaining, in minutes, that triggers the
alarm. Time remaining is calculated at the current fuel flow rate.
Low Fuel Alarm Limit
Select the value of the fuel remaining, in the selected fuel flow
units, that triggers the alarm. Fuel remaining is calculated at the
current fuel flow rate.