GeoSIG Ltd.
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009
Page 10
GSR / GCR / AS User Manual
a
If the Instrument has an internal sensor, a water level with minimum 2 degrees accuracy is also
needed for correct levelling. In case of using external sensor, refer to the sensor manual for
mounting.
Typically follow these steps for a successful installation:
•
The Instrument can be mounted in any convenient position at the location that complies with the
basic requirements outlined in section 4 upto here.
a
Please note that in case of an internal sensor, orientation of the sensor would define the
positioning of the Instrument.
a
Make sure that after installation there is enough space to easily open the Lid and access inside
the Instrument as well as easily connect / disconnect any of the connectors. Also make sure
that the visual indicators on the top of the housing, i.e. the LCD and LED’s, are visible after
installation.
•
Open the Instrument housing (see section 3.5)
•
Fix the Instrument with the 4 x M6 x 40 mm bolts to the concrete anchors through the fixation holes
at the corners of the housing (see Figure 4).
a
If the Instrument has an internal sensor, make sure that the Instrument, or the internal sensor is
properly levelled using the levelling mechanism supplied within the sensor or the Instrument. If
no levelling mechanism is supplied, make appropriate foundation arrangements that the
Instrument is levelled to a minimum of 2 degrees from level.
•
Depending on the location it may be necessary, to earth the Instrument properly. Therefore
connect the (Earthing Screw) of the Instrument via a copper wire of minimum 1.5 mm
2
to a
proper earth contact.
a
It is strongly recommended to have a proper Earthing.
4.2.5. Optional Interconnection
When optional Interconnection is purchased, special hardware and software installations have to be
followed. Further details on Interconnected Recording Networks and their installation are given in the
GeoSIG technical note, “TN # 85: Strong Motion Instrumentation Networks” as well as the "Appendix
G" of this Manual. Please refer to these documents to be able to properly deploy such a network.
4.2.6. Terminating the Installation
a
Fix the remaining cables, so that they may not influence the sensor signal by knocking
or vibrating at the sensor.
a
Do not leave any unpowered device connected to the Instrument.
After verifying that the physical installation is done properly, the Instrument can now be started and put
in operation as described in the following sections.
a
Do not touch the sensors and leave the installation site as quietly as possible.
