PROGRAMMING OF VRAE
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4.8.1 Change LEL/VOL Sensor Type
This programming menu only applies to the monitors with a
combination LEL/VOL sensor installed. This sensor can be
setup as a %LEL sensor to measure the combustible gas in
the %LEL level. It can also be set up to measure
combustible gases in the % volume level up to 100%. The
user can also set up the sensor so that it will automatically
switch from %LEL to %VOL when the %LEL sensor
reaches 100% LEL. However, this auto-ranging feature only
works for gases listed in the built-in library. The user can
select one of these sensor modes from the programming
menu.
1. “Change LEL/VOL Sensor Type?” is the first sub-menu
item in Table 4.7.
2. Press the
[Y/+]
key, the display shows the question:
“Switch to %LEL?”
3. Press the
[Y/+]
key to accept the currently displayed
sensor mode. Press
[N/-]
key to change to the other
mode. Press
[MODE]
key to exit this sub-menu and
return to the first sub-menu.
4. If there is any change to the existing selection, pressing
the
[Y/+]
key the display will show “Save ?” Then, press
the
[Y/+]
key to accept the
[N/-]
key to discard and
advance to the next sub-menu.
