Geonet Multiplexer; Installation; Mounting The Multiplexer - Geokon 8800-2-1A Instruction Manual

3. GEONET MULTIPLEXER

The GeoNet Multiplexer expands the number of vibrating wire sensors a Node can read from one
to eight. Channel switching is controlled by the Node and is accomplished by solid-state
(nonmechanical) circuitry.
Each Node with a Multiplexer attached uses the equivalent data of four single nodes. Since the
maximum number of Nodes per Network is 100, the maximum amount of Nodes with a
Multiplexer attached that may be connected to a single network is 25.
The Multiplexer is protected from environmental contaminants by a rugged, NEMA 4X
enclosure, constructed from fiberglass reinforced polyester. It is also shielded from harmful radio
frequencies and electromagnetic interference by a conductive gasket and internal RFI/EMI
coating. An Earth Ground terminal is provided on the exterior of the enclosure to protect against
lightning and other large, transient voltages.
Multiplexers ship with the following accessories:
• Four desiccant packs
• Two lithium D cells (These D cells must be installed in the Node to which the Multiplexer
will be attached.)

3.1 Installation

3.1.1 Mounting the Multiplexer

The Multiplexer is typically mounted in such a manner that the cable entries are facing
downward (as shown in Figure 13 above). Attach the Multiplexer to the mounting surface
by utilizing the Multiplexer's mounting plate. The mounting plate is designed to be used
with hardware such as U-Bolts, hose clamps, bolts, screws, etc. (Mounting hardware is
not included.)
Figure 13 - Node with Multiplexer
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