Rae Q-RAE, Operation And Maintenance Manual

Page: 65 / 170

PROGRAMMING
4 - 17
4.4.5 Change LEL Span Gas
This function allows the user to select a specific LEL gas
to be used as the span gas during LEL gas calibration.
1. “Change LEL Span Gas?” is the next sub-menu item in
Table 4.3.
2. Press [Y/+] key. If LEL sensor is installed and enabled,
the display shows:
LEL Span = ?
Methane
Otherwise, the message “No LEL installed“ will
appear.
3. If the user does not want to change the LEL span gas,
press
[Y/+]
to accept the current selection and exit this
sub-menu.
4. If the user wants to select a different LEL span gas,
press [N/-] key. Then use the [Y/+] and [N/-] keys to
scroll up or down through the list of gas names until the
desired gas appears in the display, and press
[MODE]
to select the new gas name.
5. The display shows “Save?” To confirm the new gas
selection, press the [Y/+] key to accept the change.
Press the [N/-] key or the [MODE] key to discard the
change and move to the next display.