J.P. Instruments Fuel Scan 450 Installation Manual - Manual (Page 11)

J.P.Instruments Fuel Flow Installation Manual
Report # 400
FS-450 Page 11 of 16
Rev A : Date 02/1/2002
12 Operating Instructions
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. There are two standard
operating modes of the FS-450: Automatic Scanning, and Manual Scanning. 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 scanning mode. In the Manual scanning mode, tap the STEP button to
advance to next parameter. Holding the STEP button will display the previous parameters in the sequence (rapidly
backwards).
Procedure—Changing the Set Up by entering the program mode.
Hold both
buttons for 5
seconds until
the words
Tap STEP
button until
the words
Hold both
buttons for 5
seconds until
the words
Tap STEP
to next item AUTO sequences through
these values
Description
 

Selects fuel units
Hold or tap AUTO to
select main capacity Main tank capacity, in units selected
 Y—Yes—aircraft has auxiliary tanks (next step)
Hold or tap AUTO to
select AUX capacity Auxiliary tank capacity (skipped if AUX? is no)
Hold or tap AUTO to
select low time limit Alarm limit in minutes for low time in tanks
Hold or tap AUTO to
select low quantity limit Alarm limit for low fuel quantity in tanks, in units selected
 Y—Yes—carbureted engine
 Y—Yes to exit; N—No to review list again