MSA GasGard XL Manuel D'utilisation page 24

(1) Use control push buttons to select an item to set.
(2) Press [ENTER] to confirm the selected item.
NOTE: A selected setting item is inverse and non-blinking.
NOTE: Pressing [ESCAPE] exits the System menu.
(3) Use control push buttons to:
Accept changes and leave menu
Do not accept changes and leave menu
Return to the System menu.
Description of Channel Parameters
(1) Enter the System menu (see Chapter 5.1 "System Menu").
(2) Use the control push buttons to select a channel number to modify.
(3) Press [ENTER] to confirm.
The first of two configuration screens appears:
NOTE: Use [DOWN] to toggle between the two screens.
Inhibit: Marking inhibits the channel
ATEX: Marking presets alarm and relay conditions according to ATEX 94/9 requirements
Range: Defines measuring range and units
Sensor: Specifies sensor head to be connected
MG: Defines measuring gas
Alarm 1 value threshold and
Alarm 2 value threshold
(Default value in ATEX version)
Displays if alarm level is reached
Falling value will activate alarm
Alarm is automatically deactivated
Alarm is latched until acknowledgement by [RESET]
GasGard XL
Configuration
US
24