15
7 Installing the GSM Logger at the measurement
If the magnet is attached to the retaining nut in the guide rail,
then it is also possible to slide the magnet up and down until the
optimum position for a given measurement location is found.
Where the
GSM Logger
is to be mounted in a horizontal position,
the magnet should be screwed onto the guide rail in a position as
far as possible from the aerial connector; this will maximise the
sensitivity of the internal microphone.
7.3.2
Aerial and aerial adapter
The aerial can be screwed directly into the threaded aerial con
-
nector.
If there is limited space at the measurement location, then an
aerial adapter with magnetic attachment (optional accessory) can
be used. This is screwed into place between the aerial connector
and the aerial. This provides much more flexibility in positioning
the aerial during installation. The magnetic attachment should be
fitted at the measurement location in such a way that the aerial
does not come into contact with any other objects (e.g. walls of
the shaft).
Fig. 8: Aerial adapter
Check carefully to ensure that all
contacts are clean and dry
before screwing in the aerial/aerial adapter.
The aerial/aerial adapter must be tightened firmly
by hand
until the end stop is reached
. This is necessary in order to
ensure that the unit is properly leak-tight and to guarantee a
good radio signal.
CAUTION! Risk of damage!
Never use
any tools
to assist in tightening the
aerial/aerial adapter. This could lead to damage to
the internal contacts.
Magnet for attaching the
aerial
