310 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Limas11 IR, Limas21 UV, Limas21 HW: Amplification optimization
Definition
The amplification optimization procedure automatically seeks and identifies
the optimum measurement range for the sample and reference receiver
analog/digital converter.
When should amplification optimization be performed?
Amplification optimization should be performed,
• after the lamp (EDL) has been replaced,
• after a module (sample cell, calibration cell, interference filter, receiver)
has been removed or inserted in the beam path,
• if the status message No. 301 "Measurement value exceeds the ana-
log/digital converter value range" is present (with system housing
closed light-proof).
NOTE
Amplification optimization alone cannot correct the causes for the status
messages No. 358 and 359 "Lamp intensity above or below (middle of) per-
missible range".
How should amplification optimization be performed?
• When the lamp has been replaced:
• Write down the serial number of the new lamp prior to installation.
• Perform amplification optimization for all sample components,
thereby entering the serial number of the new lamp.
• When a module has been removed or inserted in the beam path:
• Write down the serial number of the installed lamp.
• Perform amplification optimization for all sample components,
thereby entering an arbitrary lamp number.
• Perform amplification optimization for all sample components,
thereby entering the serial number of the installed lamp.
• When the status message No. 301 is present:
• Perform amplification optimization for each sample component for
which the status message is present.
Test gas
The zero gas supply should be turned on during amplification optimization.
Menu path
MENU → Maintenance/Test → Analyzer spec. adjustm. →
Amplification optimization
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