Black & Decker MULTI-GAS DETECTORS User Manual download pdf (Page 31)

BW Defender2

User Manual

Gas Exposures Computed

a Warning

To avoid possible personal injury, do not turn off

the detector during a work shift. The detector

automatically resets the TWA (LTEL), and

maximum gas exposures at start-up. If you

restart the detector during a work shift, these

values will not reflect the entire work shift.

Table 7. Computed Gas Exposures

Gas Exposure Description

TWA (LTEL)

(CO and H

only)

Long Term Exposure Limit is a

Time-Weighted Average alarm

based on an 8-hour workday.

Accumulated value.

Maximum*

(Peak)

For each gas level further from the

acceptable range, the detector

resets the maximum gas exposure

to the new level.

* Maximum gas exposure describes both very high and

very low levels of oxygen.

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Black & Decker MULTI-GAS DETECTORS User Manual Page 31