The thermostatic control of the IR-cell is
switched on. The furnace is switched off
and the gas flow is disabled.
Communication with the PC is possible.
In case the analyzer was switched off (pos. 0) for long, it should be set to pos. 1 for at least 1
hour, in order for the IR-cell to reach the stable operating temperature.
The furnace heating-up time depends on the set temperature. In order to power the furnace, the
analyzer has to be switched to position 2. At this position the gas flow is still disabled so that
there is no gas consumption.
For running analyses set the power switch to position 3. At this position, the pump is enabled so
that air and any moisture which has entered the gas flow system can be purged by the oxygen
flow. Keep it there for about 10-15 minutes before starting the first analysis. To save time, the
purging can be started before the set temperature has been reached. The slight influence of the
oxygen flow on the temperature of the infrared cell is compensated.
At short working breaks (like lunch breaks) the mains switch remains on position 2 (furnace on)
to save gas and to keep the set temperature.
During longer breaks, e.g. after finishing the work for the day, the mains switch is set to position
1 (standby). The thermostatic control of the infrared cell is then working, so that no long warm-
up time is needed, when re-starting the analyzer.
Energy consumption and wear are negligible on standby. The analyzer is designed for long term
use, so that no damage results.
Switch off the analyzer (position 0) is only useful, when working break takes several days or
weeks.
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