Calibration And Verification History - Hach sc100 1720E Instrument Manual

System Startup

5.5 Calibration and Verification History

Note: Restoring default settings
from the DIAG/TEST menu will
return the turbidimeter to its non
calibration state (gain = 1.0) but it
will not remove the previous
calibration history from memory.
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The calibration and verification history logs contain information on the last
12 calibrations and the last 12 verifications. The calibration history log shows the
gain value, the time and date of the calibration, and the initials of the operator
performing verification.
The calibration history log is accessed from the Calibrate menu. The verification
history log is accessed from the Verification menu (a submenu of the Calibrate
menu).
Each verification history entry shows the serial number of the verification device
(dry verification) or the value of the verification standard (wet verification), the time
and date of the verification, and the initials of the operator performing the
verification.
Scroll through the entries by pressing the ENTER key. After scrolling through all
12 histories, the display will return to the calibration menu level.
When the instrument is received from the factory, default values or blank spaces
will be shown for the calibration and verification history information. Those values
will be replaced with real data as the history log is filled.
The data is retained as first in, first out. When the log is full, the newest entry is
stored and the oldest entry in the log is deleted.