Geokon 6160, Руководство по установке

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2.2.2 Model 6161 Uniaxial and Biaxial Installation Instructions
Use the tiltmeter to mark the wall where the drop in anchors will be installed
Mark the location on the wall and drill, using a hammer drill, 4 each 9.5mm (3/8”) diameter hole
approximately 32 mm (1¼ ") deep. Clean the holes thoroughly, blowing out with compressed air
if possible. Insert the four 1/4" drop-in anchors with the setting pin into the hole. The threaded
end should be closest to the opening. Using the supplied setting pin tool and a hammer set the
anchors with 2 or 3 sharp blows on the setting pin. Thread the supplied 1/4-20 threaded anchor
rods into the anchor. Use washers to set the plate vertical then slip the tilmeter plate over the
anchor rods and tighten the ¼-20 nuts.
2.3. Splicing and Junction Boxes
For manual readout using a RB-500 readout box, cables from the individual sensors are
connected to a switch-box using the wiring code shown in Appendix A. If a Datalogger is used
the cables are connected directly to the Multiplexer using the same wiring code.
¼
The cable used for making splices should be a high quality twisted pair type with 100% shielding
(with integral shield drain wire). When splicing, it is very important that the shield drain wires
be spliced together! Splice kits recommended by Geokon (i.e. 3M Scotchcast

, model 82-A1)
incorporate casts placed around the splice then filled with epoxy to waterproof the connections.
When properly made, this type of splice is equal or superior to the cable itself in strength and
electrical properties. Contact Geokon for splicing materials and additional cable splicing
instructions.
2.4. Lightning Protection
The Model 6160 MEMS Tiltmeter, unlike numerous other types of instrumentation available
from Geokon, does not have any integral lightning protection components, i.e. transzorbs or
plasma surge arrestors. Usually this is not a problem. However, if the instrument cable is
exposed, it may be advisable to install lightning protection components, as the transient could
travel down the cable to the gage and possibly destroy it.
Note the following suggestions;

If the tiltmeter is connected to a terminal box or multiplexer, components such as plasma
surge arrestors (spark gaps) may be installed in the terminal box/multiplexer to provide a
measure of transient protection.

Lighting arrestor boards and enclosures are available from Geokon that install near the
instrument. The enclosure has a removable top so, in the event the protection board (LAB-3)
is damaged, the user may service the components (or replace the board). A connection is
made between this enclosure and earth ground to facilitate the passing of transients away
from the gage. See Figure 6. Consult the factory for additional information on these or
alternate lightning protection schemes.