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GasAlertMicroClip XT

Alarms

Computed Gas Exposures

a Warning

To avoid possible personal injury, do not deactivate the

detector during a work shift. TWA, STEL, and MAX readings

reset once the detector is deactivated.

Table 8. Computed Gas Exposures

Viewing Gas Exposures

To view the TWA, STEL, and peak (maximum) readings, press C twice.

The LCD first displays the TWA gas exposures.

Then the LCD displays the STEL gas exposures.

Finally the LCD displays the peak (maximum) readings.

Gas Exposures Description

TWA

S and CO

only)

Time-weighted average (TWA) based

on accumulated exposure to toxic gases

averaged over a workday according to

US OSHA method.

OSHA: 8 hour moving average

STEL

S and CO

only)

Short-term exposure limit (STEL) to gas

based on a 5-15 minute user-defined

period.

Peak*

(maximum)

Peak concentration encountered during

work shift.

* For oxygen, it is the highest or the lowest concentration

encountered.

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BW Technologies MicroClip XT Spezifikationen Seite 44