User Manual

Operation
23
EN
5.2 Selecting the
measuring mode
Click mode-key to switch between the measuring
modes methane and propane.
M (methane) or P (Propane) will be displayed in
the upper right corner of the display.
5.3 Alarm setting
Fig.
8:
Icons vibration alarm (1) and beep (2)
• Press the alarm key several times until the re-
quired alarm setting is displayed.
A press on the alarm key will successively acti-
vate the vibration alarm and the beep together,
the beep only, the vibration alarm only or it will
turn off the alarm. The correspondent icons will
appear on screen.
The meter beeps every one second to assure the
meter is in normal working status (if the beep has
been activated). The beep frequency will speed
up while the detected gas concentration becomes
higher. While you use the earphone, the meter will
automatically mute but you can hear the beep
through the earphone.
5.4 Funktionsprüfung
We recommend to carry out a Function Check of
the gas detector before each use. To do this, pro-
ceed as follows.
•
Switch on the gas detector.
•
Check the external condition of the device, the
function of all operating elements, the display
and the charge status of the batteries.
•
Hold the sensor in fresh air. The display must
now read "0".
•
Check the sensitivity of the gas detector in a
ventilated room as follows:
•
Let gas flow out at a gas lighter (do not ig-
nite!).
•
Bring the probe of the gas detector close to
the escaping gas.
•
The gas detector must now display a clear sig-
nal.
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