Mercury 150 EFI Service Manual page 202

TACH CALIBRATION – CAL 2 LEVEL
SPEED OPTION
[SKIP]
PITOT SENSOR?
[SAVE]
[NO]
PITOT SENSOR MULTIPLIER
[SAVE]
[DOWN]
PADDLE SENSOR PULSE FACTOR
[DOWN]
PADDLE TO PITOT TRANSITION
[SAVE]
[DOWN]
There are three methods for calibrating System Tach fuel tank level monitoring feature:
First: Do nothing. Linear readout based on raw sensor values. This mode does not factor
in irregular tank shapes.
Second: By following the tank calibration procedure described on pages 33–35, but with-
out actually adding fuel. Calibrate fuel tank by pressing the "dEFLt" button. System Tach
will supply an estimated range value based on linear interpolation of the sensor range val-
ues. This mode does not factor in irregular tank shapes.
Third: By following the tank calibration procedure described on pages 33–35 completely
System Tach will display an estimated range value that factors in the tank shape.
FUEL TANK CAPACITY
[DOWN] [SAVE]
CALIBRATION FUEL TANK
[SKIP]
FILL TO 1/4 THEN PRESS PLUS BUT-
[DFLT] [SKIP]
90-883728 JULY 2001
[EDIT]
[YES]
[UP]
[UP]
[SAVE]
[UP]
[UP]
[EDIT]
TON
[SAVE]
This section lets you configure the following speed sensors.
Select pitot transducer type. You can choose 100 or 200 PSI.
(100 PSI is the most common)
Adjust the pitot pressure sensor for correcting display readings
that are to high/low.
Adjust paddle wheel frequency for display readings that are to
high/low.
Set the speed at which the gauge stops looking at the paddle
wheel and starts using pitot to measure boat speed.
Lets you enter the capacity of your boats fuel tank. This option
is the same for tank 1 as it is for tank 2.
Lets you enter the mode where you can calibrate your fuel tank.
Fuel tank calibration procedure is the same for tank 1 as it is for
tank 2.
You can choose to have tank at 1/4 and hit SAVE, or hit DFLT and
a default value will be entered based on the capacity of the tank.
WIRING DIAGRAMS
Page 2D-49