Dräger X-am 3500 Notice D'utilisation page 30

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Operation
Symbol Explanation
Fault message
The gas detector or measuring channel is
not ready to measure and requires mainte-
nance. Menu Messages displays details.
Information message
Menu Messages displays details.
STEL alarm message
TWA alarm message
Event report
4.2.5 Connection
Symbol Explanation
Maintenance mode (access to the device
via PC or X-dock)
4.2.6 User level
Symbol Explanation
User level 1
User level 2
User level 3
4.2.7 Display in gas channel
Symbol Explanation
Bump test or calibration successful
Bump test or calibration failed
Measurement range exceeded
Readings below the measurement range
Channel error
Blocking alarm
##### Value too high to be displayed
4.3 Signalling concept
4.3.1 Acoustic operation signal
A periodic acoustic signal indicates that the device is
functional. The acoustic operating signal can be deactivated.
For further information, see the following chapter: "Activating
silent mode", page 35
4.3.2 Visual operation signal
A periodic pulse (increasing and decreasing intensity) of the
green LED indicates:
– Measuring, 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
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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 green 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
Then carry out an initial calibration. For further information
see: "Calibrate the gas detector", page 37.
4.4.2 Switching on the gas detector
1. Hold down the OK button for approx. 3 s.
 The display shows a countdown.
 The switch-on sequence and the warm-up phase of
the sensors start.
The following display appear one after the other:
– Start screen
– Firmware version
– Display test (the display alternates between black and
white)
– Alarm element test (LEDs, alarm signal and vibration
alarm)
– Customer-specific information screen (optional and
configurable with the Dräger CC-Vision PC software)
– Alarm thresholds, STEL, TWA (if configured) and LEL
factor (if available)
– Any expired bump test or calibration interval as well as
early warnings (if configured)
– Measured value display
The remaining sensor warm-up time is displayed in the upper,
left-hand corner in a yellow box.
Instructions for use
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X-am 3500