32 • Alarm Indications
Alarm 2 Condition
This section describes the audible and visual indications for an alarm 2
condition and suggests response to an alarm 2 condition.
Alarm 2 Condition Indications
When the gas reading of an active channel reaches the alarm 2 setpoint,
the Beacon 200 senses an alarm 2 condition. The Beacon 200 alerts you to
an alarm 2 condition as follows:
• The ALARM 2 light turns on.
• The gas reading in alarm 2 condition continues to flash and alternates
with the ALARM-2 messages.
• The buzzer sounds a pulsing tone.
• The common alarm 2 relay energizes.
• The applicable alarm 2 channel relay energizes.
Responding to an Alarm 2 Condition
This section suggests response to an alarm 2 condition.
1. Follow your established procedure for a high level combustible or toxic
gas condition or an increasing oxygen content condition.
2. Oxygen alarms are self-resetting and will automatically clear when the
oxygen rises above the alarm 2 setpoint.
3. Alarms for all other gas types are latching. After the gas reading falls
below the alarm 2 setpoint, press the reset switch to reset the alarm
circuit. Resetting the alarm circuit turns off the ALARM 2 light, and de-
energizes the common and channel alarm 2 relays.
NOTE: To silence the buzzer while in an alarm 2 condition, press the
reset switch.
You cannot de-energize the alarm 2 relays until the gas reading
falls below the alarm 2 setpoint.
Fail Condition
This section describes the audible and visual indications for a fail condition
and suggests response to a fail condition.
Fail Condition Indications
The Beacon 200 senses a fail condition for any of the following:
• The detector head wiring to the Beacon 200 is disconnected or
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