21 • Alarm Indications Beacon 800 Gas Monitor Operator’s Manual
Alarm 1 Condition
This section describes the audible and visual indications for an alarm 1 condition and
suggests responses to an alarm 1 condition.
Alarm 1 Condition Indications
When the gas reading of an active channel reaches the alarm 1 setpoint, the Beacon 800
senses an alarm 1 condition. The Beacon 800 alerts you to an alarm 1 condition as
follows:
• the ALARM 1 light turns on;
• the gas reading in alarm 1 condition flashes and alternates with the ALARM-1
message;
• the buzzer sounds a steady tone;
• the common alarm 1 relay energizes;
• the applicable alarm 1 channel relay energizes.
Responding to an Alarm 1 Condition
This section suggests the following responses to an alarm 1 condition:
1. Follow your established procedure for a low-level combustible or toxic gas condition or
a decreasing oxygen condition.
2. Oxygen alarms are factory set as self-resetting and will automatically clear when the
oxygen reading rises above the alarm 1 setpoint.
3. Alarms for all other gas types are factory set as latching. After the gas reading falls
below (rises above for oxygen) the alarm 1 setpoint, press the reset switch to reset the
alarm 1 circuit. Resetting the alarm 1 circuit silences the buzzer, turns off the ALARM
1 light, resets the channel display, and de-energizes the common and channel alarm 1
relays.
NOTE: To silence the buzzer while in an alarm 1 condition, press the reset switch.
You cannot de-energize the alarm 1 relays until the gas reading falls below (rises
above for oxygen) the alarm 1 setpoint.
Alarm 2 Condition
This section describes the audible and visual indications for an alarm 2 condition and
suggests responses to an alarm 2 condition.
Alarm 2 Condition Indications
When the gas reading of an active channel reaches the alarm 2 setpoint, the Beacon 800
senses an alarm 2 condition. The Beacon 800 alerts you to an alarm 2 condition as
follows:
• the ALARM 2 light turns on;
• the gas reading during an alarm 2 condition continues to flash and alternates with the
ALARM-1 and ALARM-2 messages;
• the buzzer sounds a steady tone;
• the common alarm 2 relay energizes;
• the applicable alarm 2 channel relay energizes.
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