3
GasAlertMicro 5/PID/IR
a
Cautions
a
Cautions
•
Warning:
Substitution of components may impair Intrinsic
Safety.
•
Caution:
For safety reasons, this equipment must be
operated and serviced by qualified personnel only. Read
and understand this user manual completely before
operating or servicing.
• Do not use the detector if it is damaged. Inspect the
detector before using. Look for cracks and/or missing parts.
• If the detector is damaged or parts are missing, contact BW
Technologies by Honeywell immediately.
• Use only sensor(s) that are specifically designed for the
GasAlertMicro 5/PID/IR detectors. Refer to
.
• Calibrate the detector before first-time use and then on a
regular schedule, depending on use and sensor exposure
to poisons and contaminants. Sensors must be calibrated
regularly and at least once every 180 days (6 months).
• 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.
• BW recommends the combustible sensor be checked with a
known concentration of calibration gas after any known
exposure to catalyst contaminants/poisons (sulfur
compounds, silicon vapors, halogenated compounds, etc).
• 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.
•
Warning:
High off-scale LEL readings may indicate an
explosive concentration.
• Only the combustible gas detection portion of this
instrument has been assessed for performance by CSA
International.
• 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.
a
Cautions
• Before using common products around sensors, refer to
Sensor Poisons and Contaminants
.
• High concentrations of certain toxic gases, for example
H2S, may have an adverse effect on the LEL sensor. This
effect, known as inhibition, is usually temporary but in
extreme circumstances can impair the sensitivity of the LEL
sensor.
After any gas exposure that causes an alarm in the toxic
gas sensors, the LEL sensor should be verified with a bump
test, and recalibrated if necessary.
• 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.
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