Digital gas monitoring
5. If the gas level stays above the Alarm 1 Level for the set time the
relay 1 on-board will energise, and remain energised as long as
the gas remains above the alarm setting. The bottom left corner
of the display will indicate a 1 and the alarm 1 LED will light up. In
addition, the Alarm 1 Transmit Message (default is 1) will be sent to
all monitors and Communication modules via the CAN network.
6. All monitors or Communication modules on the CAN network with
a Relay 1 Receive Message (setting 36) = 1 will energise their on-
board relay 1, and display a 1 in the bottom left hand corner of their
display.
7. When the current gas concentration drops below the Alarm 1 set
point, the Delay-Off time will start. The timer will clear if the gas
rises above the alarm setting.
8. When the Delay-Off Timer times out the relay 1 will de-energise,
the Alarm 1 LED will turn off and the Relay 1 Transmit message will
stop being sent, thereby de-energising relays on other units.
9. If the temperature exceeds the Hi Temperature Alarm, relay 1 will
activate, the Alarm 1 LED will turn on and the Alarm 1 Transmit
message will be sent via the CAN network to other sensors and
Communication modules. When temperature drops, the alarm 1
will be turned off and the Alarm 1 Transmit message will stop being
sent.
10. If the gas level rises to the Alarm Level 2 setting, then the Level 2
Delay-On Timer will begin, and after timing-out the on-board relay
2 will activate the Alarm 2 LED will turn on, the Relay 2 Transmit
message (default = 2) will be set out on the CAN network activating
remote units with that same Relay 2 Receive message (option 37).
Note that all 3 alarms operate independently and can be higher or
lower that the others.
11. When the current gas concentration drops below the Alarm 2
setting for longer than the Alarm 2 Off-Delay Setting the relay 2
will turn off, the Relay 2 LED will turn off, and the Relay 2 Transmit
message will stop being sent on the CAN network.
12. When the gas concentration rises above the Alarm Level 3 setting
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