YOKOGAWA SC150, Instruction Manual

Page: 16 / 58

IM 12D7B4-E-H
10
4. OPERATION OF EXAxt SC150
4-1. Main display functions
4-2. Trending graphics.
Pressing the button changes the display
into a graphical mode in which the average
measured value is shown on a time scale.
The “Live” value is also digitally displayed in
a text box. The time scale ( X-axis) and the
primary value scale (Y-axis) are set in the
"DISPLAY SETUP" menu. The full screen
displays a trend of 51 points that represent
the average of the selected time interval.
The analyzer samples the measurement
every second. The trending graphic also
shows the maximum and minimum
measured value in the that interval.
For example if the time scale is set to 4
hours, then the trend is shown for 4 hours
prior to the actual measurement. Each point
on the trend line represents the average
over 4*60*60/51= 282 measurements
(seconds).
4-3. Zoom in on details
This button gives access to the diagnostic
information of the analyzer. The following
messages will appear under normal
(default) conditions:
Zoom in on Details
4-3-1. CC (factory) = the nominal cell
constant as determined by the factory
calibration during production. This value is
set during commissioning, and is found on
the nameplate of the sensor or the
calibration certificate.
Routing: Commissioning >>
Routing: Commissioning >>
Measurement setup >> Configure Measurement setup >> Configure
sensor
sensor
4-3-2. CC(adjusted) = the calibrated cell
constant. When the calibration of the
system is adjusted on-line by grab sample
or by calibrated solution technique, the
new cell constant is recorded here. This
value should not deviate greatly from the
original factory calibration. In the event that
there is a significant discrepancy seen
between this reading and the CC (factory)
value, the sensor should be checked for
damage and cleanliness.
Routing is via the "Calibration" menu.
4-3-3. Temp. comp 1 = the chosen
temperature compensation method for the
primary measurement.
Routing: Commissioning >> Routing: Commissioning >>
Measurement setup >>
Measurement setup >>
Temp.compensation
Temp.compensation
-Go to graph screen
Ma n Screen
-Go to detail screen
-Go to info screen
-Go to setup screen
S/cm
-Home key back
CC (factory) 0.100/cm
CC (adjusted) 0.100/cm
Temp. comp 1 NaCl
Temp. comp 2 None
Actual mA1 4.00
Actual mA2 4.00
-Up one level
to mainscreen
-Move down cursor
-Enter selected
submenu
M
a
x
im
u
m
M
in
im
u
m
Minimum
Maximum
Average
Li
ve
re
ad
in
g
SC
S
C
T
120.0
90.0
60.0
30.0
109.3 S/cm
Fig 4-2. Trend Screen
Fig 4-1. Main Display
Fig 4-3. Detail Screen