Stel Interval; Twa Period (Hours); Correction Factor (%) - Honeywell GasAlert Max XT II User Manual

STEL Interval

The STEL Interval option provides protection for workers from over
exposure to high concentrations of gas, and is based on user-defined
5-15 minute intervals. When the maximum STEL is reached, the detector
alarms to notify the worker to leave the area immediately.
Follow all safety procedures as defined by your
employer.
Enter the interval (5-15 minutes) in the STEL Interval (minutes) field.
The detector is shipped with the STEL interval set to 15 minutes.

TWA Period (hours)

The TWA Period (hours) option defines a time-weighted moving aver-
age of accumulated gases over a period of 4-16 hours, to ensure the
worker leaves an area when the defined maximum average is accumu-
lated.
Example: The TWA Period option is set to 6 hours. Therefore, the
moving average accumulates over a 6-hour average. If the worker is in
the field longer, the oldest accumulated values (first hour) are replaced
by the newest values (seventh hour). This continues for the duration of
the work shift until the detector is deactivated.
a Caution
Regulations vary depending upon region. Adhere to the regula-
tions defined for your area.
Enter a value ranging from 4-16 hours. The detector is shipped with the
default setting of 8 hours.

Correction Factor (%)

The Correction Factor (%) option is used to enter compensation factors
for hydrocarbons other than methane. The correction factor is only appli-
cable to LEL and can only be applied if the LEL sensor has been cali-
brated with methane.
Ensure the calculations are correct for the applicable
gas to ensure the reading display as 100% LEL.
Enter a K-factor (industry standard decimal value) in the Correction
Factor (%) field. Values can range from 0.50 - 4.00.
Not applicable to a % by vol CH
The detector is shipped with the factory default set to 100%.
GasAlertMaxXT II
Sensor Configuration
Note
a Caution
Note
measuring mode.
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