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
