3
Operation
Page 12
gas-lab
Q1
1
2
3
4
5
6
,
7
8
9
0
Menu key:
Opens/closes a menu.
When starting from a display this means:
Pressing once opens the current display's submenu listing.
Pressing twice opens the menu listing for branching to other modules.
Pressing three times closes the menu.
Arrow key left:
Previous entry.
Input mode: delete previous character
Enter.
Menu selection.
Enter input mode.
Within input mode:
Accept new value.
Numeric key pad
incl. minus sign
and decimal point
Arrow key right:
Next entry.
Input mode:
Quit input mode without
changing values.
3.2 Other operating elements: status LED, calibration
switch
The status LED on the front of the device is a three-colour light emitting diode.
The status of this LED indicates whether an error of the gas quality
measurement is pending or has been pending.
Please refer to the table below for the meaning of the individual colours:
LED status
Meaning
red, blinking
An alarm is pending, i.e. an error has occurred that
influences the gas quality measurement.
yellow, blinking
A warning is pending. That is, an event has occurred
without affecting the gas quality measurement.
green, blinking
A green blinking light appears in the start-up phase after
a mains failure.
red, steady light
An alarm has been pending but is no longer relevant.
It can be removed from the error listing by accepting it.
yellow, steady light
A warning has been pending but is no longer relevant.
It can be removed from the error listing by accepting it.
green, steady light
The device runs error-free.