Fuel Flow Calibration
The K-Factor represents the number of electrical pulses output by the fuel flow sensor per gallon of fuel. Aspects unique to each installation will affect the accuracy of the initial K-Factor, and as a result, the K-Factor must generally be adjusted up or down to increase the accuracy of the fuel flow calibration.
If the fuel usage reported by the AXIS™ flight display differs from the actual fuel usage (as measured at the fuel pump or other trusted method of measurement), the K-Factor can be adjusted by using the Fuel Flow Calibration Menu.
Do not adjust the Actual Fuel Used unless at least 10 gallons of fuel has been used. The more fuel used, the more accurate the fuel flow calibration adjustment will be.
Once an 'Actual - Fuel Used' value is entered, the corresponding 'Adjustment - Fuel Flow' percentage is displayed. It is also possible to adjust the fuel flow using the 'Adjustment - Fuel Flow' field directly. Entering an adjustment percentage will adjust the 'Actual - Fuel Used' value accordingly. However, this is not the method used to adjust the K-Factor to increase the accuracy of the fuel flow calibration.
