BW Technologies GasAlertMicro 1, User Manual

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GasAlertMicro
Calibration and Setting Alarm Setpoints
the sensor. See the section “ Replacing a Sensor or Sensor
Filter ”.
If the span adjustment is an unusually large
(more than 20 %), the detector will advise:
note: Span
adjust unusually large - check that the
cal gas is correct.
Confirm that the calibration gas bottle you are using is
correct and that the span concentration value(s) in the
detector match the value of the calibration gas bottle.
See
the section Set Span Concentration Values
If the calibration adjustment is expected accept the
calibration.
Span Adjustment Accept/Reject
If a span is rejected, the display advises: Note: Span
rejected and skips the span for the failed sensor(s).
Alarm Setpoints
Alarms may be set anywhere within the detection range for
the sensor. See the section “
Specifications ” or set to zero for
off.
Factory alarm setpoints may vary by region. An example is
given below. Set as desired.
H
2
S TWA: 10 ppm
STEL: 15 ppm
LOW: 10 ppm
HIGH: 15 ppm
CO TWA: 35 ppm
STEL: 50 ppm
LOW: 35 ppm
HIGH: 200 ppm
O
2
LOW: 19.5%
HIGH: 23.5%
Combustible LOW: 10% LEL
HIGH: 20% LEL
SO
2
TWA: 10 ppm
STEL: 15 ppm
LOW: 10 ppm
HIGH: 15 ppm
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