GasAlertMicro
User Manual
Sensor Alarm
The detector tests for a missing or defective sensor during
the activation self-test. Refer to
.
Low Battery Alarm
The detector tests the batteries upon activation and
continuously thereafter. Battery power continually displays
during normal operation. If the battery voltage is low, the
detector activates the low battery alarm.
The low battery alarm continues until the batteries are
replaced, or the battery power is almost depleted. If the
battery voltage drops too low, the detector performs an
automatic shutdown.
Automatic Shutdown Alarm
If the battery voltage is in immediate danger of dropping
below the minimum operating voltage, the audible alarm
beeps eight times, the visual alarm flashes eight times, and
the LCD displays
OFF
.
Note
In stealth mode, the detector only vibrates before
shut-down.
To replace the batteries, refer to
.
Calibration and Setting Alarm Setpoints
Calibration Guidelines
When calibrating the detector adhere to the following
guidelines:
•
Recommended gas mixture:
CO: 10 to 500 ppm balance N
2
H
2
S: 10 to 100 ppm balance N
2
SO
2
: 10 to 100 ppm balance N
2
LEL: 10 to 100% LEL or 0.5 to 5% by vol. methane
balance air
O
2
: Clean air, 20.9 %
•
CG-Q58-4 and CG-Q34-4 calibration gas (4-gas mix)
are available from BW Technologies. Refer to
Replacement Parts and Accessories
.
•
Calibration accuracy is never better than the calibration
gas accuracy. BW Technologies recommends a
premium-grade calibration gas. Gases with National
Institute of Standards and Technology (NIST) traceable
accuracy improve the validity of the calibration. Do not
use a gas cylinder beyond its expiration date.
40
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