Measurement
42
Table 4 List of items displayed for the cal menu
Display
Calibration
type
Item
Description
Setting
range
Initial
value
Zero solution calibration
Reference
Refer to “ Zero calibration ” (page 54).
Zero
calibration
Screen displayed
during zero
calibration
Zero point calibration is performed using a
zero solution.
Pass the zero solution through the sensor
and wait until the measured value is
stabilized.
ENT: Confirms the calibration value
-
-
Span calibration
Reference
Refer to “ Span calibration ” (page 55).
Span
calibration
(calibration for
equalizing
measurement
sample to
electrical zero)
Screen displayed
during electrical
zero calibration
Electrical zero point calibration is
performed automatically. The main display
starts blinking and the value on the
indicator on the left increases sequentially.
Note:
When the system has judged that the value
is stabilized, the screen will automatically
switch to the next display.
-
-
Screen displayed
during
measurement of
sample
The measured value starts blinking. Wait
until the measured value is stabilized.
ENT: Confirms the stabilized sample
solution
-
-
Screen for
equalizing
calibration values
The sub display starts blinking. Enter the
residual chlorine concentration of the
solution measured using the DPD method.
z
S
/
T
: Changes the calibration value
z
ENT: Confirms the calibration value
0.01 to
5.00 (mg/
L)
-
Screen for
confirming
calibration value
The sub display starts blinking and the
calibration value is confirmed. After it has
been confirmed, the screen will
automatically switch to the cal menu.
-
-
Temperature calibration
Reference
Refer to “ Temperature calibration ” (page 57).
Temperature
calibration
Temperature
calibration screen
Enter the temperature manually. Check the
temperature of the sample solution passing
through the sensor, and then input the
temperature.
z
S
/
T
: Changes the calibration value
z
ENT: Confirms the calibration value
−
5.0 to 5.0
(
°
C)
-