Gas Functionality
System Description and Operation, AutroSafe Maritime Gas Detection, 116-P-BS420MG/XGB, Rev. E, 2019-12-10,
Autronica Fire and Security
Page 20
5. Gas Functionality
5.1 Inhibit Point
All loop input units can be inhibited. When one or several points are
inhibited, the point(s) will not signal alarm to outputs. An inhibited point
will however present low/high alarm on all panels and AutroCom as
usual. This includes panel buzzer, panel LEDs and panel LCD display.
It is only possible to inhibit a unit from the panel menu or via
AutroCom. An inhibited point will be inhibited until the unit is un-
inhibited by a manual operation or by timeout. Inhibit status will be
indicated by a panel LED.
5.2 Set Alarm Limits
By using the Set Alarm Limits (via the menu) is possible to change a
gas detector’s alarm limit for Low Alarm and High Alarm (password
restricted).
5.3 Get Measurement Values
By using the Get Measurement Values (via the menu) it is possible to
get analogue measurement values for a selected gas detector.
Analogue values can be monitored on the panel or on the
AutroMaster.
5.4 Support for Common Trouble Output
The Common Trouble Output can be connected to a BSB-310,
BN-310 or a BSJ-310 I/O module. The output is activated if any kind of
fault occurs in the Operation Zone to which it is connected. In addition,
any disablement or point inhibition within the Operation Zone will
cause the unit to be activated.
5.5 Support for Gas Detectors (4-20 mA input)
The AutroSafe Gas Detection System supports the use of gas
detectors that are to be connected to the PowerLoop via the
PowerLoop 4-20mA Input Unit BN-342. This interface includes a user-
configurable type that may be used to interface detectors with a 4-20
mA output signal.
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