2-Point Calibration - Lowrance LMF-400 Installation And Operation Instructions Manual

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
press .
ENTER
3. Highlight
B
want to calibrate and press
4. Select
C
ALIBRATE
appear with three options: 2, 3 and 5. Select
and press
ENTER
5. The Levels menu will appear with two choices: Empty Level and Full
Level. Choose
6. The following message will appear: Set Tank to Empty Level Press
Enter. Press
ENTER
7. Fill up your tank.
8. Select
F
ULL
appear: Set Tank to Full Level Press Enter.
9. Press
ENTER
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
, use the
UP
and press
D
US EVICES
ENTER
and press
.
and press
E L
MPTY EVEL
. You will be taken back to the Levels menu.
and press
L
EVEL
. Press repeatedly to return to the main display.
EXIT
and keys to select
DOWN
ENTER
.
. The Number of Points menu will
ENTER
ENTER
. The following message will
ENTER
55
S
YSTEM
. Chose the fluid level you
, for two-point calibration,
2
.
and
S
ETUP