Wohler UL 23, Руководство пользователя

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Wöhler UL 23 / US 23
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There are two reasons this can happen. First a low battery will cause this
problem. Secondly, a bad headset connector can do the same. If you have
another headset available, such as that from a portable radio (with a 3,5
mm plug), try it. If you determine that the headset is defective, return it to
Superior Signal or your wholesaler for replacement.
Not sure unit is working
Can the unit hear the blink of your eyes? If it can, chances are it is working
fine. The leak you are trying to hear may not be turbulent.
6. Battery installation
There is a sliding battery door located on the back of the UL 23.
Turn the unit over so that the controls are facing the floor, and the sensor is
facing away from your body.
At the opposite end from the sensors (the end closest to you) there is a
sliding panel.
Apply minimal pressure to the center of the panel and slide it towards you
exposing the battery compartment.
Install a new 9 volt battery noting the (+) and (-) positions which are indi-
cated on the inner label.
If you plan to store the instrument for an extended period of time, remove
the battery.
7. Care and maintenance
The UL 23 can be cleaned with a towel using dish soap and damp cloth.
Remove the batteries and close the door before cleaning. Do not allow
water to enter the unit, especially the front where the sensor is located.
After cleaning, dry the units with a paper towel. The same procedure can
be used on the carrying case.
8. Calibration
The UL 23 is designed in a way to minimize the need for regular calibra-
tions. They are constructed with components of very tight tolerances and
do not age rapidly.