Electronics International MVP-50T - Manual (Page 26)

the K Factor. The K Factor is a measurement of the pulses per gallon that the flow transducer outputs. Due
to variations in the installation of the flow transducer, it may be necessary to adjust the K Factor for the first
few flights in order to get an accurate fuel remaining, fuel used and flow reading.
The K Factor should be changed only when the fuel tanks have been filled accurately on level ground. After a
few adjustments of the K Factor, the fuel remaining and the fuel used as calculated by the MVP should be
within a few gallons (or less) of actual and should not need further adjustment. Use the following fields, as
necessary, to correct the K Factor.
Calc’d Used Since Fill up: This field displays how much fuel the MVP calculated you used since the last fill
up, based on the current K Factor.
Actual (Pump Reading): If there is an error in the calculated Fuel Used, enter the actual fuel used (pump
reading) in this field to correct the K Factor.
Percentage Error: This field displays the percentage of difference between “Calc’d Used Since Fill up” and
“Actual (Pump Reading)” fields. A large % errors may be an indication that you did something wrong.
Auto Adjust K Factor?: Selecting this option will allow the MVP to automatically correct the K Factor
based on the data entered in the fields above.
K Factor: The K Factor is the number of pulses per gallon the fuel sender outputs. Installation plumbing can
affect this number. To achieve excellent accuracy the K Factor may have to be tweaked. This number can be
changed either manually or automatically. When you change the K Factor, the accuracy of the MVP’s
Fuel Remaining, Fuel Used and Fuel Flow readings will change. The K Factor can be changed
manually using the following formula:
(Calc’d Used Since Fill up) x (K Factor)
New K Factor = ——————————————————
Actual Fuel Used (Pump Reading at Fill up)
4.3.2 Bottom Section of ADD Fuel Screen:
Fuel Qty Units: This field changes the units of measure as
displayed on the “Add Fuel,” “Fuel Management” and “Weight
& Balance” screens.
“Default Full Level 1” and “Default Full Level 2:” These
two fields allow you to change the default fuel levels used in the
top portion of this screen.
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