Hach-Lange SURFACE SCATTER 7 sc Turbidimeter - Manual (Page 39)

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Operation
5. Confirm to view the previous calibrations. After scrolling
through all 12 histories, the display will return to the calibration
menu level.
To view verification history:
1. From the Main Menu, select SENSOR SETUP and confirm.
2. If multiple sensors are attached to the controller, choose
SELECT SENSOR>SS7 SETUP and confirm.
3. Select CALIBRATE and confirm.
4. Select VERIFICATION and confirm.
5. Select VER HISTORY and confirm. The most recent
verification will be displayed on the screen.
6. Confirm to view previous verifications. After scrolling through all
12 histories, the display will return to the calibration menu level.
To view baseline history:
1. From the Main Menu, select SENSOR SETUP and confirm.
2. If multiple sensors are attached to the controller, choose
SELECT SENSOR>SS7 SETUP and confirm.
3. Select CALIBRATE and confirm.
4. Select VERIFICATION and confirm.
5. Select BASELINE HIST and confirm. The most recent baseline,
including the Gelex plate serial number and expected value,
will be displayed on the screen.
6. Confirm to view previous verifications. After scrolling through all
12 histories, the display will return to the calibration menu level.
When the instrument is received from the factory, there will be one
entry for the calibration and verification history information. As
calibrations and verifications are performed, the history information
will grow until there are 12 entries.
When the log is full, the newest entry is stored and the oldest entry
in the log is deleted.