Navigator 600 Phosphate
Multi-stream
7 Calibration & Maintenance
IM/NAV6P/MS–EN Rev. F
45
7.4 Setup Calibration / Clean
Enables scheduled calibration and cleaning.
Fields
Description
Automatic Schedule
The automatic calibration schedule for the analyzer. A dialog box is displayed with the following options:
Zero Frequency
– the frequency zero calibrations are performed (up to 7 days).
Next Zero
– if 'Zero Frequency' has been enabled, this displays / sets the scheduled date for the
zero calibration. Once a scheduled calibration has been performed the date is incremented by the
number of days set in 'Zero Frequency'.
Important
. A warning is displayed if the Next Zero is scheduled 6 hours (or less) after an
automatic clean. It is recommended that an automatic clean and zero are separated by 6 hours to
ensure the best zero accuracy; this also applies to manually triggered functions.
Secondary Frequency
– the frequency secondary calibrations are performed (up to 4 weeks).
Next Secondary
– if 'Secondary Frequency' has been enabled, this displays / sets the scheduled
date for the secondary calibration. Once a scheduled calibration has been performed the date is
incremented by the number of days set in 'Secondary Frequency'.
Important
. A warning is displayed if the 'Next Secondary' is scheduled 6 hours (or less) after an
automatic clean. It is recommended that they are separated by 6 hours to ensure the best
calibration accuracy; this also applies to manually-triggered functions.
Clean Frequency
– the frequency the analyzer is cleaned (up to 4 weeks).
Next Clean
– if 'Clean Frequency' has been enabled, this displays / sets the scheduled date for
analyzer cleaning. Once a scheduled clean has been performed the date is incremented by the
number of weeks set in 'Clean Frequency'.
Manual Clean
– to ensure zero accuracy, perform a zero at least 6 hours after the clean
sequence has completed.
Secondary Calibration
Value
The value of the secondary calibration solution used (0 to 15 ppm) – see Appendix A.2, page 63.
Important
. This is the same value that is used in the 'Calibration' options – see Section 6.2. Changing
the value here also changes the value in the 'Calibration' options.
Automatic Scheduled
Clean Duration
The duration used in scheduled automatic cleans (20, 30, 60 minutes, 2, 4, 6, 8, 12 hrs). See
Note.
Manual Clean
Duration
The duration used when a manual clean is initiated (20, 30, 60 minutes, 2, 4, 6, 8, 12 hrs). See
Note.
Reset Cal. Factor &
Offset
Immediately resets the calibration factor and the calibration offset to the default factory setting. This
option can be used when a calibration has not been performed correctly.
A non-adjustable clean duration is used automatically when the analyzer is returned to service following out-of-service conditions
such as excessive zero offset, power loss for more than 24 hours and loss of sample for more than 24 hours.
Note. All Cleans are followed by an 18 minute recovery period.
