18 Technical manual | X-am® 3500/8000
Operation
4.3 Signalling concept
4.3.1 Acoustic operation signal
A periodic acoustic signal indicates that the device is functional. The acoustic
operation signal can be deactivated. For further information, see the following
chapter: "Activating silent mode", page 33
4.3.2 Visual operation signal
A periodic pulse (increasing and decreasing intensity) of the green LED indicates:
– Monitoring, confined space entry, leak search or benzene/pre-tube
measurement application active
– There is no device or channel error, no gas alarm and no special state
4.3.3 Visual operation signal with activated D-Light
An activated D-Light feature allows the user to also check and indicate compliance
with certain settings:
– Evaluation of bump test intervals activated and complied with (factory setting) or
evaluation of the calibration intervals active and complied with
– Usage interval complied with
The D-Light feature can be activated using the Dräger CC-Vision PC software.
Signalling visually corresponds to the operating signal.
If one of the conditions listed is not fulfilled and the D-Light is activated, the greed
LED will switch on briefly at regular intervals (short flash approx. every 60 s) instead
of pulsing periodically.
4.4 Switch the gas detector on or off
4.4.1 Initial start-up
When the gas detector is switched on for the first time, a wizard starts. The wizard
guides the user through the set-up of the gas detector:
– Language selection, if applicable
– Data format and date
–Time
Readings below the measurement range
Channel error
Blocking alarm
##### Value too high to be displayed
Symbol Explanation
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