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Calibration
8.1.1 Programming (automatic calibration)
This option is used to define the parameters for an automatic
calibration.
The programming screen lets you define the frequency of the
zero calibration, the concentration of the calibration solution
and to choose between an automatic or manual calibration.
The following table indicates the recommended frequency of
the zero calibration in terms of the minimum concentration of
the samples.
Sample minimum
concentration
Recommended frequency
< 5 ppb 24 hours
5 < x < 50 ppb 48 hours
> 50 ppb > 72 hours
For an automatic slope calibration, this screen lets you define
the frequency.
• When the BASE option is set to Day, the WEEK option
sets the calibration day(s).
Ex 1: SMTWTFS, for a daily calibration.
Ex 2: SM*W*FS, for a calibration every day except
Tuesday and Thursday.
• The HOUR option is used to set the time to start the
calibration.
• When the BASE option is set to Hour, the INTERVAL
option sets the frequency of the slope calibration. The
recommended slope calibration frequency is 1 week (168
hours).
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