YOKOGAWA EML500 Series User Manual

6-8
IM80B80T10E 21th Edition : Jul.1,2007-00
< 6.INSTALLATION >
(3) Span Adjustment (Maintenance Mode)
If an error in the speed is proportional to the actual speed, it can be adjusted by multiplying the
speed by a certain coefcient ( the span-adjustment value). This adjustment is made to minimize
a discrepancy between the displayed speed and actual speed before a milepost measurement is
made.
NOTE
Span-adjustment data have an effect on milepost data.
Therefore, do not change the value after a milepost measurement.
A span adjustment is also necessary if the speed error has become larger due to contaminants
adhering to the bottom of the ship after many years of service.
The adjustment procedure is shown in the gure below.
At -5-3, press the
F 1
key to select span
adjustment. The display then changes to that
marked a. In a single-axis sensor system , how-
ever, 'TSP' (transverse span) does not appear on
the display.
To select 'LSP' (Longitudinal span), press the
F 1
key while the display is at a.
The display then changes to that marked b.
The value highlighted in reverse video here is the
adjustment data that were the latest set.
To change it to '1.15 times' for example, enter
1
,
1
,
5
, and
0
using the numeric keypad
(see the display marked c).
Conrm the entered value, then press the
ENT
key. This stops the Flickering and completes the
setting (see the display marked d).
Setting range : 0.600 to 1.800
To set 'TSP', press the
F 2
key while the dis-
play is at a, and then use the same procedure as
that for 'LSP'.
F 1 F 2
DISPL
PREV
MODE
F 1 F 2
DISPL
PREV
MODE
MAINT
MAINT
F 1 F 2
DISPL
PREV
MODE
MAINT
F 1 F 2
DISPL
PREV
MODE
MAINT
a.

-5-3

-5-4

-5-31
b.
d.
c.
F 1 F 2
DISPL
PREV
MODE
MAINT
ENT
Press the ‘ENT’ key.
Enter 1,1,5,and 0 in
this order from the
numeric keypad.
F 1 F 2
DISPL
PREV
MODE
F 1 F 2
DISPL
PREV
MODE
MAINT
MAINT
F 1 F 2
DISPL
PREV
MODE
MAINT
F 1 F 2
DISPL
PREV
MODE
MAINT
a.

-5-3

-5-4

-5-31
b.
d.
c.
F 1 F 2
DISPL
PREV
MODE
MAINT
ENT
Press the ‘ENT’ key.
Enter 1,1,5,and 0 in
this order from the
numeric keypad.

YOKOGAWA EML500 Series Specifications

General

Brand	YOKOGAWA
Model	EML500 Series
Category	Measuring Instruments
Language	English