14 Dräger Polytron 8000
Operation
4.4 Switching to the Quick Menu mode
z Tap and hold for 1 to 2 seconds.
The Quick Menu will open. This menu is displayed without
any password request. No changes can be made.
The selected information about status and device settings
can be retrieved (e.g. warning messages, error messages,
installed modules and calibration data).
4.5 Switching to Menu mode
(password protected)
1. Tap and hold for longer than 3 seconds.
The password request appears.
2. Enter the password and confirm.
The screen for password entry appears.
3. Set the password and confirm the entry.
The menu hierarchy corresponding to the entered password
will open.
z An error message appears if the entered password is invalid.
Password presets:
Password for the Calibration menu: _ _ _ 1
Password for the Settings menu: _ _ _ 2
4.6 Measurement mode
z Switch on the power.
{ The device runs through a start-up sequence (LCD test
by inverting the display, LED test, software version and
initialization) and starts the warm-up phase. The display
indicates that the sensor will be ready to operate in
hh:mm:ss (the countdown begins) and the Polytron
8000 sends the Maintenance signal.
{ After the warm-up phase, the device enters into the
measurement mode.
{ The current gas concentration, the selected gas and
the units of measure appear on the display.
{ The LED is lit green.
{ The sensor is ready to measure.
4.6.1 Analog signals
In measurement mode the output current of the device is
between 4 and 20 mA and is proportional to the target gas
concentration.
The device uses various current values to indicate different
operating modes. This conforms to the NAMUR NE43
recommendation. The 4 to 20 mA interface on the device can
be customized and configured to individual requirements.
The device is provided with suitable standard settings factory
default (see chapter 12.3 on page 32).
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