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REGARD
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3900
Maintenance
_
every 10 seconds at the same time as the warning signal. As the duration of the
3 mA signal is short, the relay may not be triggered each time. For more
information, see the instructions for use for the remote sensor transmitter.
Polytron maintenance signal
The maintenance signal from older Polytron transmitters (3~5 mA at 1 Hz) triggers
the fault relay (F1) on the input module if the alarm threshold is set above 2.9 mA. If
the fault relay is non-latching, then it switches over. For more information, see the
instructions for use for the remote sensor transmitter.
8 Maintenance
Observe EN 60079-29-2 and the relevant national regulations in the country of use.
There are no specific servicing tasks for the REGARD® 3900 control unit.
Carry out maintenance or calibration tasks in accordance with the instructions and
the intervals specified in the instructions for use for the remote sensor transmitter.
8.1
Configuration and calibration of the control unit
Using the configuration and calibration tools for the REGARD® 3900 control unit,
the control unit configuration, including the combination of internal control modules
and the settings for the gas detection and warning units, can be displayed and
changed. The tools also enable a zero-point calibration and a span calibration.
Configure and calibrate the control unit for all channels during initial installation and,
if necessary, during maintenance and repair work on the control unit or the gas
detection system.
After configuration or calibration, ensure that all alarms and warning units are
operating as intended.
Configuration and calibration tools
Use the Dräger REGARD® 3900 configuration software for REGARD 3900 and
3910. The software is a Microsoft Windows-based application and requires an
interface unit (RS-232) and a compatible PC. The software and interface unit are
available from Dräger. Use the full instructions in the instructions for use provided
with the software.
Use the integrated configuration system for the REGARD® 3920. REGARD® 3920
can also be configured with the REGARD® 3900 configuration software as
necessary.
8.2
Configuration and calibration of a REGARD® 3920
controller
8.2.1 General
Using the configuration system integrated in the REGARD® 3920, the user can
view and change the control unit configuration, including the combination of internal
control modules and the settings for the gas detection and warning units. The
system also enables a zero-point calibration and a span calibration.
Содержание Regard 3900
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