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AO2000-LS25 LASER ANALYZERS | OI/AO2000-LS25-EN REV. D
69
Mode «Zero» / «Span»
Zero (Zero) and span check (Span) functionality are optional
features of the analyzer.
Refer to Calibrating the device <Calibrate instrument> on
page 63.
Fault mode «Instrument Off»
Fault mode is entered when the device has detected a severe
failure during the self-test or normal operation, which might
permanently damage the device.
In this case the instrument stops measuring the gas
concentration and most instrument functions are turned off.
This operating mode is indicated on the LCD with <Instrument
Off>, no gas concentration is displayed, and the bottom line of
the display indicates the nature of the fault, see Diagnosis /
Troubleshooting on page 70.
The instrument automatically attempts a restart after one hour.
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