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the optical and acoustic control signals
(items 3 and 4) operate
the software version number (e.g. 2.7) is
displayed
the letters JUS are displayed to indicate
adjustment mode
Minimum sensitivity
display of set minimum sensitivity (e.g.
10 PPM)
you can choose minimum sensitivity of
either
10 PPM or 100 PPM
to alter the minimum sensitivity insert the
adjusting pin into the opening on the
back of the detector (item 6) and press
the service key behind it until the required
value is set
Zero point adjustment
start of sensor warm-up phase and
automatic zero point setting (approx.
2 minutes)
the zero point and one segment flash
once the zero point has been auto-
matically set the acoustic signal (item 3)
sounds