Lowrance LMF-400 Installation and Operation Manual - Page 61

Point Calibration, To execute 2-Point calibration, Point Calibration

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2-Point Calibration A 2-point calibration is best suited for rectangular or square-shaped tanks, where the capacity of the top half of the tank matches the capacity in the lower half of the tank. In a two-point calibration, you will set two points, one each for empty and full levels. You can begin calibration at either of the two points, but we recommend starting with an empty tank. You will fill the tank to complete calibration. NOTE: You DO NOT have to calibrate both points to complete the calibration and you can calibrate the points (Empty Level and Full Level) in any order you wish. Remember: Points that are not calibrated will not be as accurate as points that have been calibrated. For the greatest accuracy, we recommend both points be calibrated. To execute 2-Point calibration: 1. Before following the steps below, make sure your fuel tank is empty. 2. Press MENU, use the UP and DOWN keys to select SYSTEM SETUP and press ENTER. 3. Highlight BUS DEVICES and press ENTER. Chose the fluid level you want to calibrate and press ENTER. 4. Select CALIBRATE and press ENTER. The Number of Points menu will appear with three options: 2, 3 and 5. Select 2, for two-point calibration, and press ENTER. 5. The Levels menu will appear with two choices: Empty Level and Full Level. Choose EMPTY LEVEL and press ENTER. 6. The following message will appear: Set Tank to Empty Level Press Enter. Press ENTER. You will be taken back to the Levels menu. 7. Fill up your tank. 8. Select FULL LEVEL and press ENTER. The following message will appear: Set Tank to Full Level Press Enter. 9. Press ENTER. Press EXIT repeatedly to return to the main display. 3-Point Calibration 3-point calibration is designed for tanks that vary in shape from the top to the bottom. You can begin calibration at any point in the 3-point process, but we recommend starting calibration with an empty tank. In a 3-point calibration, you will set three points, one each for empty, half and full levels. NOTE: You DO NOT have to calibrate all three points to complete the calibration and you can calibrate the points (Empty Level, Half 55

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55
2-Point Calibration
A 2-point calibration is best suited for rectangular or square-shaped
tanks, where the capacity of the top half of the tank matches the
capacity in the lower half of the tank. In a two-point calibration, you
will set two points, one each for empty and full levels. You can begin
calibration at either of the two points, but we recommend starting with
an empty tank. You will fill the tank to complete calibration.
NOTE:
You DO NOT have to calibrate both points to complete the
calibration and you can calibrate the points (Empty Level and Full
Level) in any order you wish.
Remember: Points that are not
calibrated will not be as accurate as points that have been
calibrated.
For the greatest accuracy, we recommend both points be
calibrated.
To execute 2-Point calibration:
1.
Before following the steps below, make sure your fuel tank is empty.
2. Press
MENU
, use the
UP
and
DOWN
keys to select
S
YSTEM
S
ETUP
and
press
ENTER
.
3. Highlight
B
US
D
EVICES
and press
ENTER
. Chose the fluid level you
want to calibrate and press
ENTER
.
4. Select
C
ALIBRATE
and press
ENTER
. The Number of Points menu will
appear with three options: 2, 3 and 5. Select
2
, for two-point calibration,
and press
ENTER
.
5. The Levels menu will appear with two choices: Empty Level and Full
Level. Choose
E
MPTY
L
EVEL
and press
ENTER
.
6. The following message will appear:
Set Tank to Empty Level Press
Enter
. Press
ENTER
. You will be taken back to the Levels menu.
7. Fill up your tank.
8. Select
F
ULL
L
EVEL
and press
ENTER
. The following message will
appear:
Set Tank to Full Level Press Enter
.
9. Press
ENTER
. Press
EXIT
repeatedly to return to the main display.
3-Point Calibration
3-point calibration is designed for tanks that vary in shape from the top
to the bottom. You can begin calibration at any point in the 3-point
process, but we recommend starting calibration with an empty tank. In
a 3-point calibration, you will set three points, one each for empty, half
and full levels.
NOTE:
You DO NOT have to calibrate all three points to complete the
calibration and you can calibrate the points (Empty Level, Half