Honeywell BW GasAlertMicro, Руководство пользователя

Страница: 48 / 83

GasAlertMicro
User Manual
Gas Exposures Computed
a Warning
To avoid possible personal injury, do not
deactivate the detector during a work shift.
TWA and STEL readings reset if the detector
remains off for more than 5 minutes.
Table 7. Computed Gas Exposures
Gas Exposure Description
TWA (CO, SO
2
,
and H
2
S only)
Time-weighted average based on an
8-hour workday. Accumulated value.
STEL (CO, SO
2
,
and H
2
S only)
Short-term exposure level based on a
5-15 minute period (user defined).
Accumulated value.
Maximum*
(Peak) Maximum gas exposures encountered
during a work shift.
* For oxygen, maximum concentration encountered of
either very high or very low levels.
Viewing Gas Exposures
The detector computes the TWA value based on an 8-hour
workday and the STEL alarm is based upon a 5 to 15 minute
period (user defined). For additional information and
procedures, refer to
STEL Calculation Period .
Press
C
until the LCD displays the TWA gas exposures and
then the STEL gas exposures.
Lastly, the LCD displays the maximum gas exposures.
To clear the TWA, STEL, and maximum gas exposure
readings, press
C
and
G
simultaneously.
38