20 Dräger Polytron 8700/8720
Settings menu
8.2.2 Changing passwords
The passwords for calibration (zero and span calibrations) and
for the settings (full configuration) can be defined in this menu.
1. Select Settings > Instrument > Passwords > Calibration/
Settings PWD and confirm.
2. Select the line for the password settings and confirm.
3. Set the password and confirm.
The setting for the password is displayed.
4. Select Confirm and confirm.
8.2.3 Setting the date and time
1. Select Settings > Instrument > Date and time and confirm.
2. Select the desired line and confirm in order to switch to the
Change mode.
3. Set each digit and confirm each setting.
4. Select Confirm and confirm.
8.2.4 Changing the display language
1. Select Settings > Instrument > Language and confirm.
2. Select the desired language from the list and confirm.
8.2.5 Configuring the function key
This function is used to assign a predefined function to the
key. The selected function is activated by briefly taping the
key.
1. Select Settings > Instrument > Function key and confirm.
2. Select the desired function and confirm.
z Repeating the confirmation deactivates the selected
function.
z If Bumptest is selected:
The maintenance symbol is shown on the right hand
side of the display and the maintenance signal is output.
Repeating the confirmation ends the bump test and the
device reverts to the normal measurement mode.
z In measurement mode, the selected function can be
activated by briefly pressing .
Selection options:
8.2.6 Resetting the device to factory settings
The following device parameters are reset to the factory
settings with this function (see chapter 13.3 on page 33).
z Alarm parameters
z Passwords
z Language
z Function key
z HART interface
z Data logger
z Analog interface
z Relay configuration
1. Select Settings > Instrument > Device init. and confirm.
2. Select Confirm and confirm in order to reset the device to
the factory settings.
8.2.7 Deactivating the software dongle
This function allows the SW dongles to be deactivated before
they are removed or in the event of a fault.
A dongle can only be reactivated by switching the power to the
device off and on.
1. Select Settings > Instrument > SW dongle > Dongle
datalogger/Dongle sensortest/Dongle diagnostic and
confirm.
2. Select Deactivate func. and deactivate Dongle datalogger/
Dongle sensortest/Dongle diagnostic with .
8.2.8 Display settings
Changing the contrast
1. Select Settings > Instrument > Display > Display contrast
and confirm.
2. Change the contrast and confirm.
Changing the display mode
The display of measured values can be turned on or off with
this function.
1. Select Settings > Instrument > Display > Display mode
and confirm.
2. Select Standard or Non display and confirm.
If "Non display" has been selected, the display shows the start
screen and the symbols.
If the relay option is set and an alarm is triggered, the display
shows the current gas concentration and the red LED flashes,
regardless of the selected display mode.
Graph (only with
data logging)
The measurements from the sensor
are displayed graphically on a time axis
(see chapter 7.3.2 on page 17).
Faults Faults are displayed in plain text
(see chapter 7.1.2 on page 17).
Warnings Warnings are displayed in plain text
(see chapter 7.1.1 on page 17).
Bump test The bump test allows gas to be applied
without an alarm being issued. The
maintenance signal is output on the
4-20 mA output.
Sensor vitality Shows the remaining sensor vitality
(only available for certain sensors).
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