Dräger REGARD 3900 Series Instructions For Use Manual page 7

3 Description
3.1 Feature description
The Dräger REGARD
monitoring of up to sixteen 4–20 mA remote sensor transmitters, in order to warn
against potentially dangerous or harmful conditions.
The series includes the REGARD
3920 are closed wall enclosures; the REGARD
needs to be installed in a rack-based system. For further information see:
"REGARD
The control unit monitors the electrical signals from the remote sensor transmitters
to the input channels and emits warning messages if alarm and fault conditions
occur. For each input channel, alarms for up to three different gas concentrations
(A1, A2 and A3) and two fault conditions (F1 and F2) are available. Potentially
dangerous or noxious gases can be displayed on the transmitter by setting alarm
thresholds for the gas concentrations. Depending on the configuration, the alarms
are activated when the monitored concentrations increase or decrease. The faults
(F1 and F2) are triggered when the transmitter emits the corresponding fault signal
(F2 is only used if the transmitter emits a second fault signal). The combination of
internal evaluation module (input modules, relay modules and output modules) as
well as the settings of the control unit can be adapted to the respective gas
detection and warning requirements. In addition, warning devices used with the
control unit can be selected and configured by the user as required. The control unit
of the REGARD
software programme. The REGARD
menu.
®
3900 series is a group of control units for continuous
®
3910", page 17.
®
3900 series is configured using a Microsoft Windows
®
REGARD 3900
®
3900, 3910 and 3920. The REGARD
®
3910 is a modular system, which
®
3920 also features a built-in configuration
Description
®
3900 and
®
-based