J.P. Instruments Fuel Scan 450 Flight Manual Supplement - Manual (Page 3)

J.P.INSTRUMENTS Airplane / Rotorcraft Flight Manual SA00861SE
PO BOX 7033 Supplement No. 1
HUNTINGTON BEACH CA 92646
FS-450
Page 3 of 4
I GENERAL OPERATION
The FS-450 Fuel Scan uses a small turbine transducer that measures the fuel flowing into the engine.
Higher fuel flow causes the transducer turbine to rotate faster which generates a faster pulse rate. Prior to
engine start you inform the FS-450 Fuel Scan of the known quantity of fuel aboard, and it will keep
track of all fuel used.
Start Up Fuel : After initial self-test, you will be asked to inform the FS-450 of start up fuel. The
FS-450 will display (or or ) for one second, and then flash
until any button is pressed. Refer to the column in the chart below corresponding to
your fuel tank configuration. Tap the AUTO button to select one of the four following fueling choices on
the left column of the chart.
AUTO to
choose

Main tanks
only, no tabs
Main tanks
with tabs
Main & Auxiliary tanks
Did not add any fuel since last shutdown.
*
Topped the
main tanks. Filled only
to the tabs. Topped the main tanks. If some additional
fuel is added to the auxiliary tanks, you will
input this next when is displayed
*
(not
available) Topped the
main tanks. Topped both the main and auxiliary tanks.
Did not top, but added additional fuel to the aircraft, or removed fuel from the
aircraft.
The FS-450 has programmable alarms. When the remaining amount of fuel falls below the alarm limit the
bottom display will show the amount of fuel REMaining and the specific cue light will flash. When the
remaining time falls below the alarm limit the bottom display will show the MINutes of fuel remaining and the
specific cue light will flash. When an alarm is displayed, tapping the STEP button will temporarily disable the
alarm indication for the next ten minutes. When an alarm is displayed, holding the STEP button until the
word appears will disable that alarm indication for the remainder of the flight. After initial self-test,
you will be asked to inform the FS-450 of start up fuel. The FS-450 will display (or
liters or pounds) for one second, and then flash until any button is
pressed. The display will pause at each parameter for a few seconds in the Automatic indexing mode. In the
Manual indexing mode, tap the STEP button to advance to next parameter. Holding the STEP button will
display the previous parameters in the sequence (rapidly backwards).

Digital display for numeric readouts and messages: top display is fuel flow and the lower display
for all other parameters.

Indicator lights to show what information is being displayed on the digital display
JPI FS 450
Fuel Flow GPH
Gallons
Per Hr.
-MPG
STEP AUTO
USD REM H.M. REQ--RES Function
Always shows fuel flow
shows fuel parameter
corresponding to indicator light
AUTO enters the automatic
scan mode
STEP enters manual scan mode,
steps through each paramerter
indicator lights index through
each parameter
FAA APPROVED Date December 18, 2000