Calibrate - ABB Navigator 500 Series Operating Instructions Manual

Navigator 500
Sodium analyzer

7.1.1 Calibrate

Menu
Calibrate
Select
Exit
Menu
Sodium 1 – 4
Sensor Calibration
Low Calibration
High Calibration
Two-Point Cal
Regeneration Cycle
OI/ASO550–EN Rev. G
Used to calibrate the wet-section, regenerate the wet-section, set up calibration parameters,
process calibrations and initiate Grab Sample routines.
Access to the Calibrate menu is permitted via the Calibrate and Advanced levels only.
Comment
The identity of the sodium wet-section being calibrated
(if a sodium multi-steam wet-section, Sodium only is displayed).
Performs a single-point offset calibration using the low standard
calibration solution. The default calibration time is 15 minutes and is
followed by a Recovery period.
The active offset value is adjusted after this calibration. This calibration
adjusts for any drift in the reading and should be performed weekly or
as required.
Note: During the calibration the sample is directed to drain via the
sample stream valve.
Performs a single-point span calibration using the high standard
calibration solution. The default calibration time is 15 minutes and is
followed by a Recovery period.
The active offset value is adjusted after this calibration.
Note: During the calibration the sample is directed to drain via the
sample stream valve.
Performs a two-point calibration.
Runs both a low calibration and a high calibration. The total default
calibration time is 30 minutes and is followed by a Recovery period.
The active offset value and slope are calculated after this calibration.
This calibration compensates for any drift in the reading and changes
in the sensitivity and should be performed weekly or as required.
If the slope is calculated to be less than 80 % or greater than 110 %
the calibration has failed, a Cal Failed diagnostic appears and the offset
and slope are not updated.
Note: During the calibration the sample is directed to drain via the
sample stream valve.
Displayed only if Regeneration Fitted is enabled.
Performs a regeneration automatically followed by a two-point
calibration. The regeneration procedure energizes the regeneration
valve (if fitted) for 1 minute to expose the electrode to the regeneration
solution.
A regeneration recovery period is then initiated, which last for 2 hours.
The recovery period is followed by a two-point calibration.
Refer to Section 5.7, page 28 for more details of the Regeneration
procedure.
7 Menu descriptions
Defaults
15 min.
15 min.
30 min.
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