BW Technologies GasAlertMax User Manual page 13

H2s, co, o2, combustibles 2, 3, and 4 gas detectors
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To avoid possible personal injury:
Warning: Substitution of components may impair Intrinsic Safety.
Do not use the detector if it is damaged. Before you use the detector, inspect the case. Look for cracks or
missing plastic.
If the detector is damaged or something is missing, contact
For use only in potentially explosive atmospheres where oxygen concentrations do not exceed 20.9% (v/v).
Make sure the back is closed and fastened, and the battery is locked in place before you operate the detector.
Use only a sensor specifically designed for your GasAlertMax model. (See the section,
and
Accessories.)
Periodically test the sensor's response to gas by exposing the detector to a targeted gas concentration that
exceeds the High Alarm setpoint. Manually verify that the audible and visual alarms are activated.
Prior to each day's usage sensitivity must be tested on a known concentration of the target combustible gas
(methane, etc.) equivalent to 25-50% of full-scale concentration (accuracy must be within 0 to +20% of actual).
Accuracy may be corrected by recalibrating the instrument.
It is recommended the detector be calibrated before first-time use, and then at least once every 180 days.
Do not turn off the detector during a work shift. Turning off the detector resets the TWA (time-weighted
average), STEL (short-term exposure limit), and maximum gas exposure values to 0. (See the section,
Alarms.)
It is recommended that the accuracy of the GasAlertMax be checked with known concentration calibration
gas before each day's use and immediately after any known exposure to contaminants (e.g., after an H
alarm if such a sensor is fitted).
a Caution
BW Technologies
GasAlertMax
Safety Information - Read First
immediately.
Replacement Parts
S
2
3

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