Power On/Off - Wohler GS 220 Bedienungsanleitung

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Power ON/OFF

• Press ON/OFF key more than 0.2 second to
turn on the meter. While the meter is on and
electrical power is enough, the BAT. OK LED
will stay on.
To ensure the accuracy, users must perform
•
the warm-up period in the clean air.
The meter will be automatically switched off in
•
10 minutes. Or you could press ON/OFF key
again to turn off.
While the meter is powered on but the „ready"-
LED is off, the sensor is under warm-up process.
The warm-up time is approximately 60 seconds.
While „ready"- LED is on, the meter is ready to
measure.
Even you turn off the meter for a short time and
turn on again, it is always necessary to wait for 60
seconds warm-up time..
NOTE!
If the Wöhler GS 220 has not been used for a long
time, we recomend to repeat the warm up/calibra-
tion phase several times to achieve a higher sen-
sitivity and accuracy. To do so, switch on the me-
ter 2 or 3 times and off again, then the „ready"-
LED is on.
The meter beeps every one second to as-
•
sure the meter is in normal working sta-
tus. The beeps frequency will speed up
while the detected gas concentration be-
comes higher.
While user use earphone, the meter will
•
automatically mute but user could hear
the beeper through earphone.
While not using earphone, user could
•
mute the beeper by switching the mute to
ON position.
Power ON/OFF
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EN