Honeywell BW GasAlertMicro, User Manual

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GasAlertMicro
Alarms
Gas Alarm Setpoints
The gas alarm setpoints trigger the gas alarms, which are
described in the following table.
Table 8. Gas Alarm Setpoints
Alarm Condition
Low Alarm CO, H
2
S, SO
2
, and combustibles:
Ambient gas level above the low
alarm setpoint. (For O
2
refer to the
statement following this table).
STEL and TWA
Alarms (CO, SO
2
and H
2
S only)
Accumulated value above the STEL
or TWA alarm setpoints.
High Alarm CO, H
2
S, SO
2
, and combustibles:
Ambient gas level above the high
alarm setpoint. (For O
2
refer to the
statement following this table).
Multi-Gas Alarm Two or more gas alarm conditions.
Oxygen alarm setpoints: User defined for low and high
alarms. Set both below, both above, or one above and one
below 20.9%, as desired.
Resetting Gas Alarm Setpoints
Note
Standard factory alarm setpoints will vary by region.
Occupational Safety and Health Association (OSHA)
standard settings are used as an example.
Table 9. Sample Factory Set Alarm Setpoints
Gas TWA STEL Low High
CO 35 ppm 50 ppm 35 ppm 200 ppm
H
2
S 10 ppm 15 ppm 10 ppm 15 ppm
O
2
N/A N/A 19.5% 23.5%
Combustibles N/A N/A 10% LEL 20% LEL
SO
2
10 ppm 15 ppm 10 ppm 15 ppm
To change the factory set alarm setpoints, refer to Calibration
and Setting Alarm Setpoints .
Note
An alarm can be disabled by setting the alarm
setpoint to zero.
Stopping a Gas Alarm
The low and high alarms stop when the ambient gas level
returns to the acceptable range.
Note
If alarms are set to latch, press
C
to reset the
alarms.
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