Manual
7
The sensor unit must be installed in the room to be inspected, such as a room where CO
2
gas bottles are
stored. The LC display shows the CO
2
concentration in the ambient air as well as the temperature. When
the green LED glows constantly, the power supply of the device is granted.
If
“ESC” is indicated in the LC display of the remote display unit, you must adopt protective
measures before entering the room where the sensor unit has been installed.
Check the room’s
ventilation and find out whether there is a CO
2
leak, wearing protective clothing / equipment. As soon as
the CO
2
concentration in the ambient air has reached
the second alarm threshold, “ESC” appears in the
display of the sensor unit as well as in the display of the remote display unit
. The yellow LED “FLT”
(standing for fault) flashes. Use the
„ReFactSet“ function to reset the gas leak detector to factory defaults.
The “ESC” indication should now disappear. Alternatively, you can remove the mains adaptor and plug it
back into the socket.
The sensor unit has the following functions:
DIAG
Communication test between sensor unit and remote display unit
CAL
Calibration of gas detector
ReFactSet
Reset to factory default settings
You can set two alarm thresholds:
AL1
AL2
1. Alarm threshold
Selectable threshold values: 0.5 %; 1 %; 1.5 %; 2
%
(Factory default setting: 1.5 %)
When the CO
2
concentration exceeds the first
threshold value, the red AL1 LED (LED 1) will flash,
the buzzer will sound and the potential-free contact
will close if the red and blue cables are connected
or closes when the white and blue cables are
connected.
The AL1 LED will stop flashing and the buzzer will
stop sounding as soon as the CO
2
concentration
falls below the first alarm threshold value.
2. Alarm threshold
Selectable threshold values: 1.5 %; 2 %; 2.5 %; 3
%; 3.5 %; 4 %
(Factory default setting: 3 %)
When the CO
2
concentration exceeds the second
threshold value, the red AL1 and AL2 LEDs will
flash at the same time, the time between the
buzzer intervals becomes shorter and „ESC“
appears in the LC display.
When the CO
2
concentration falls below the second
alarm threshold, even if it falls below the first alarm
threshold, the red AL1 and AL2 LEDs will keep
flashing and the buzzer will sound until you restart
the device. To restart the gas meter, press the
“Reset“ key (F) or disconnect the mains plug from
the socket and plug it back in.
