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50% LEL = (%CH4)
If the LEL By Volume CH4 option is enabled, a percentage value can be
entered in the 50% LEL = (%CH4) field to display the LEL reading in
%vol. assuming a methane environment.
Enter the equivalent methane concentration for 50% LEL as follows:
• North America = 2.5%
• Europe = 2.2%
This option is only applicable to the LEL sensor.
Auto Zero on Startup
When enabled, the sensors automatically zero during the startup tests.
The Auto Zero on Startup option is available for the CO, H
O
sensors.
2
The detector is shipped with the Auto Zero on Startup option enabled for
all sensors.
LEL by Volume CH4
If enabled, the detector LCD displays the LEL value as %vol. assuming a
methane environment.
If LEL by Volume CH4 is enabled, a percentage value must be entered
in the 50% LEL = (%CH4) field. Refer to
S, LEL, and
2
50% LEL =
(%CH4).
10% (of reading) Over-span
When enabled, the detector automatically over-spans the LEL sensor by
10% of the span concentration to ensure the span meets CSA stan-
dards. After enabling this option in Fleet Manager II, a calibration (man-
ual or using the MicroDock II) must be completed to fully enable this
option.
20.8 Base Reading
If the 20.8 Base Reading option is enabled, the detector assumes
20.8 % O
as ambient air (factory default is 20.9% O
2
The detector is shipped with this option disabled.
Low Alarm Acknowledge
If enabled, the audible alarm can be disabled during a low alarm
condition. The LED and visual alarm indicators remain active until the
the alarm condition changes or the detector deactivates.
Press C to acknowledge the low alarm and deactivate the audible
alarm.
The Low Alarm Acknowledge option is not applicable to O
The detector is shipped with the Low Alarm Acknowledge disabled.
GasAlertMax XT II
Sensor Configuration
).
2
Note
.
2
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