geo-FENNEL FGD 1 Mode D'emploi page 11

OPERATION
Note
Power on the detector in atmosphere free of gas only!
Power on the instrument by sliding the ON/OFF button to the right - in fresh air. The sensitivity control
should be set to minimum. The green LED (Ready) will light and the alarm will sound. After switching on
the detector for the first time the instrument will run through a warm-up and calibration period for about
60 seconds. During this period the alarm will not show any gas leak but this sound belongs to the calib-
ration period.
Check of function
Each time the detector is used you should first run a quick check of function: Turn the sensitivity button
of the instrument to minimum and expose the sensor to a gas source, i. e. a lighter. Now the alarm
should sound.
Optimum conditions
Optimum measuring results will be achieved under following conditions:
Temperature
Air humidity
Detection of a gas leak
Power on the instrument and turn the sensitivity button from minimum to maximum until a slowly
ticking sound starts (adjustment of the sensitivity).
Earphone
If the situation requires a quiet operation or if the background noise makes it difficult to hear the built-in
speaker you should use an earphone. Connect the plug of the earphone with the corresponding jack of
the instrument - now the alarm sound can be followed more easily.
0°C up to 50°C
10 up to 90 %RH
EN
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