GasAlertMicroClip
Quick Reference Guide
2
every 180 days (6 months).
⇒
The combustible sensor is factory calibrated to
50% LEL methane. If monitoring a different
combustible gas in the % LEL range, calibrate
the sensor using the appropriate gas.
⇒
Only the combustible gas detection portion of
this instrument has been assessed for
performance by CSA International.
⇒
Calibrate only in a safe area that is free of
hazardous gas.
⇒
It is recommended that the combustible sensor
be checked with a known concentration of
calibration gas after any known exposure to
contaminants/poisons (sulfur compounds,
silicon vapors, halogenated compounds, etc.).
⇒
BW recommends to “bump test” the sensors,
before each day’s use, to confirm their ability to
respond to gas by exposing the detector to a gas
concentration that exceeds the alarm setpoints.
Manually verify that the audible and visual
alarms are activated. Calibrate if the readings are
not within the specified limits.
⇒
Caution: High off-scale readings may indicate an
explosive concentration.
⇒
Any rapid up-scaling reading followed by a
declining or erratic reading may indicate a gas
concentration beyond upper scale limit, which
may be hazardous.
⇒
Extended exposure of the GasAlertMicroClip to
certain concentrations of combustible gases and
air may stress a detector element, which can
seriously affect its performance. If an alarm
occurs due to high concentration of combustible
gases, recalibration should be performed, or if
needed, the sensor replaced.
⇒
Protect the combustible sensor from exposure to
lead compounds, silicones, and chlorinated
hydrocarbons. Although certain organic vapors
(such as leaded gasoline and halogenated
hydrocarbons) may temporarily inhibit sensor
performance, in most cases, the sensor will
recover after calibration.
⇒
For use only in potentially explosive
atmospheres where oxygen concentrations do
not exceed 20.9% (v/v).
