Aztec 600 aluminium, ammonia, color, iron, manganese, phosphate
Single- and multi-stream colorimetric analyzers 6 Configuration
IM/AZT6CR–EN Rev. J 33
6.3 Calibration
There is one tab in the Calibration screen for the aluminium, ammonia, iron, manganese and phosphate analyzers.
There are two tabs the Calibration screen for the color analyzer:
6.3.1 Setup
6.3.2 Zero Compensation (Aztec 600 Color only)
Fields Description
Calibration Time The time the analyzer calibrates.
Calibration Date The next date when a calibration is due.
Calibration Frequency Frequency at which an automatic calibration is performed.
Low Standard The concentration of the low standard.
High Standard The concentration of the high standard.
Gradient Coefficient
The gradient coefficient is an indication of the variation between the actual calibration curve and the
ideal calibration curve.
A limit to the gradient coefficient can be set (ideal coefficient =1).
Above this limit the analyzer fails a calibration.
Default fail criteria occurs when the coefficient exceeds 1 ± 0.6.
Calibration Fail Event
If this is set to 'FAIL' (default) after a calibration failure the analyzer stops and displays a failed
calibration message.
If the feature is set to 'ATTENTION' the analyzer continues running after a failed calibration (using the
last valid calibration data). The failed calibration data can be viewed in the 'Audit Log'.
Fields Description
Zero Compensation
Frequency
Frequency at which the analyzer performs a zero compensation measurement to account for any
optical variations such as cell fouling when measuring manganese rich waters.
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