Geokon GeoNet 8000 Series Instruction Manual

Installing Model 8920
Cellular Loggers

GEOKON Provided
►Mini to standard USB cable
►#3 Philips head screwdriver
►Small flat head screwdriver
►Desiccant packs
Customer Provided
►Mounting hardware
►Materials to create a suitable earth ground
Items Required for Installation

1. Remove the rubber cap from
the antenna mount
2. Thread the antenna onto the
mount by rotating it clockwise
until finger tight
Attach the Antenna
Do not cross thread the antenna.
The O-ring on the antenna must
be flush against the enclosure.

A
C D
B
Cellular Loggers can be mounted
using bolts (A), screws (B),
hose clamps (C), U-bolts (D), etc.
(Mounting hardware not included)
Always mount Loggers vertically,
with the antenna pointing up
The space around the antenna
should be free of obstructions
A minimum mounting height of
two meters (six-feet) is
recommended
Logger Mounting

The direction of tilt for the A and
B axes is shown on the cover of
the unit
The two axes of the tiltmeter
have a calibrated range of ±30°,
based on a starting position of 0°
(antenna pointing up)
Tiltmeter Logger Orientation

Properly grounding Loggers
protects against lightning and
other large transient voltages
A 6-foot copper rod and 12
AWG or larger copper wire
are recommended
All Cellular Loggers can be
grounded via the mounting
bracket (A)
Multi-channel Loggers can
also be grounded via the
copper ground lug on the
bottom of the enclosure (B)
Grounding the Logger
A B

1. Using a Phillips head screwdriver,
loosen the cover screws by turning
them counterclockwise
2. Remove the cover
Remove the Cover

1. Record the serial number of the
sensor and the logger
(For Multi-channel loggers, note
the channel each sensor has
been wired into)
2. Loosen the cable gland nut and
remove white plastic dowel
3. Slide the cable of the sensor
through the cable gland (and
gland nut) and into the Logger
Connecting the Sensor

4. Wire each conductor by
pressing down on an orange
tab, inserting the bare end of
the conductor into the terminal
block, then releasing the tab
Conductors are wired as
follows:
Connect the Sensor (Continued)
Addressable Loggers
GREEN = 485–
RED = 12V
BLACK = GND
VW Loggers
RED =
BLACK = VW–
GREEN = TH–

5. Gently pull on each conductor to make sure it is secure
6. Tighten the nut onto the cable gland until the gland firmly grips
the outer jacket of the cable
The cable gland must be properly tightened to prevent water
entry (Do not over-tighten, which may strip the plastic threads)
7. Gently pull on the sensor cable to make sure it is held in place
by the cable gland
Connect the Sensor (Continued)
To prevent possible short circuits, do not allow bare leads to
touch each other during or after wiring