Operating manual GPD 3000
Turn alarm sound on/off
(Tone1)
Setting „Off“:
no alarm sound
Setting „On“:
alarm sound activated
When reaching the adjusted alarm limit, the alarm sound is emitted with
increasing frequency, depending on the gas concentration.
Adjust alarm level
The alarm level may be adjusted freely within the measurement range.
The flashing digit can be adjusted to any number between zero and 9.
After approx. 5 seconds the next digit will flash for adjustment.
To save the adjusted value, strike the zero key until a sound confirms
the saving process.
Adjust contrast
The contrast of the display may by adjusted in 25 points and the saved.
With each short stroke of the key, the menu increases the value in one
point, and when reaching the final value starts counting again from
zero.
- 12 –
Alarm
sound1
On
Long strike
Long strike
Short strike
Short strike
Off