4 Calibration
23
Note
The decimal place of input range varies according to the setting in "5.5.2 Setting of Decimal Place for
each Component" (page 48).
Tip
[CLEAR]: Clears all input numeric values.
[BACK]: Clears the rightmost number.
9.
Press the button for [ZERO VALUE] for VIS on the UV/VIS CAL. screen.
10.
Enter "0" with numeric keypad, and press [SET].
Input range: 0.000 Abs to 5.000 Abs or 0.0 m
-1
to 500.0 m
-1
The screen returns to the UV/VIS CAL. screen.
Note
Though any number can be entered for the zero calibration value, normally, enter "0".
11.
After waiting for 3 minutes and confirming that the measurement value has
stabilized, press [ZERO].
The “Start zero cal.?” screen is displayed.
12.
Press [YES] to start the zero calibration.
The “Calibrating” screen is displayed.
After calibration, the “Calibration finished” screen is displayed.
13.
Press [YES].
The zero calibration value for UV/VIS is updated.
14.
The common zero calibration is complete.
If performing the common span calibration subsequently, start the common span
calibration with the analyzer unit still in the zero calibration tank.
If finishing calibration, set the analyzer unit in the measuring tank.
Note
When the measurement value increases gradually after stabilization, the solution may be
contaminated. Replace the zero solution and calibrate again.
If the temperature difference of the sample water and zero solution is large, the measurement
value may be unstable. Calibrate under the conditions where the temperature difference is as
small as possible.
