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5 FUNCTION
78
5.3
Automatic Zero Calibration
To secure a stable measurement value, zero calibration is performed automatically at a
constant interval. Zero calibration is performed for turbidity, color and residual chlorine
measurements. Zero-standard solution which filtered sample water is used.
Note
To perform the automatic zero calibration, set the EXT I/O IN to OFF. For details, see "5.2.1 Setting EXT
I/O IN" (page 75) .
The following settings are available for zero calibration.
Displaying CALIBRATION SETTING screen
1.
Press [CALIBRATION] on the SETTING 1/2 screen.
The CALIBRATION SETTING 1/2 screen is displayed.
1.
Press [ ] on the CALIBRATION SETTING 1/2 screen.
The CALIBRATION SETTING 2/2 screen is displayed.
Setting
Explanation
Initial Setting
Setting ON/OFF of ZERO CAL.
(
Specifies whether ZERO CAL. is activated or not.
ON
Setting the calibration interval
(
Sets the calibration interval.
24 hours
(
Sets the time to perform zero calibration. Performs zero
calibration periodically from the specified time.
2004/01/01/00:00
Setting ON/OFF of ZERO CAL.
DRAIN
)
Specifies whether the drain sequence is activated or not. OFF
(
Sets the necessary time for zero calibration.
20 minutes
Displaying the maintenance item screen" (page 73).
MEAS. screen
MAINTENANCE
screen
SETTING1/2
screen
[SETTING]
[MAINTE.]
[CALIBRATION]
[CAL. SETTING 1/2] screen
[CAL. SETTING 2/2] screen
[
]
[CALIBRATION]
[ ]
Summary of Contents for TW-100
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