Aztec 600 aluminium, ammonia, color, iron, manganese, phosphate
Single- and multi-stream colorimetric analyzers 8 Chart Functions
IM/AZT6CR–EN Rev. J 49
8 Chart Functions
8.1 Historical Review
Enables a historical view of the chart. While in the 'Historical
Review' screen an animated icon is displayed at the top of
the screen. The analyzer exits 'Historical Review' mode
automatically after 15 minutes if no key is pressed.
Selecting the 'Historical Review' menu item changes the screen
to the history view – use the keys to scroll up and down
the screen.
Selecting the 'Historical Review' menu item a second time gives
the option of either exiting the historical review or to go to a
specified date/time:
Press the keys to select the date/time and press the
keys to change the selected value.
To finish, press or press to escape without making any
changes. The screen displays the chart at the selected
date/time. Use the keys to scroll up and down the
screen.
8.2 Operator Messages
These are messages that can be used to annotate the chart.
These can be selected from up to 24 pre-defined messages –
see Section 6.1.6, page 31. Alternately, the messages can be
user-defined.
Annotations can also be added remotely via the web – see
Appendix D, page 90.
The annotation is added to the chart at the time it is entered. For
example:
An entry is also included in the Alarm Event Log.
8.3 Chart Annotation
Toggles any operator messages and/or alarms on/off.
Note. The 'Chart Functions' menu can be accessed only from the 'Chart View’ screen.
Fig. 8.1 Chart Functions
see Section 8.1, page 49
see Section 8.2, page 49
see Section 8.3, page 49
see Section 8.4, page 50
see Section 8.5, page 50
see Section 8.6, page 50
Note. While in Historical Review mode:
Invalid historical data (for example, when recording
has stopped) is denoted by '– – –' in the digital
indicator.
Operator messages generated are added to the alarm
event log at the present time, not the time indicated
by the cursor.
All data stored in the analyzer's internal memory can
be viewed.
If daylight saving is enabled (see Section 7.5.4,
page 47) and the selected 'Goto' target date/time is
within the daylight saving period, 'Daylight Saving' is
displayed on the dialog box.
Note. Annotations added while in 'Historical Review' are
added to the chart at the time of entry not on the chart as it
is displayed on the screen.
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