Geokon LC-2x16, Instruction Manual, Page: 11 / 67

5
Channel Number Terminal Strip
Designator
Terminal Strip
Position
Description Cable Wire
Color
12 T12 23H Vibrating Wire + RED
12 T12 23L Vibrating Wire - BLACK
12 T12 24H Thermistor + GREEN
12 T12 24L Thermistor - WHITE
12 T12 S12 Analog Ground (shield) BARE WIRE
13 T13 25H Vibrating Wire + RED
13 T13 25L Vibrating Wire - BLACK
13 T13 26H Thermistor + GREEN
13 T13 26L Thermistor - WHITE
13 T13 S13 Analog Ground (shield) BARE WIRE
14 T14 27H Vibrating Wire + RED
14 T14 27L Vibrating Wire - BLACK
14 T14 28H Thermistor + GREEN
14 T14 28L Thermistor - WHITE
14 T14 S14 Analog Ground (shield) BARE WIRE
15 T15 29H Vibrating Wire + RED
15 T15 29L Vibrating Wire - BLACK
15 T15 30H Thermistor + GREEN
15 T15 30L Thermistor - WHITE
15 T15 S15 Analog Ground (shield) BARE WIRE
16 T16 31H Vibrating Wire + RED
16 T16 31L Vibrating Wire - BLACK
16 T16 32H Thermistor + GREEN
16 T16 32L Thermistor - WHITE
16 T16 S16 Analog Ground (shield) BARE WIRE
Table 1 - Transducer Cable Connections
Insert four D-cells straight down into the battery holders. Ensure the polarity of the batteries
matches the diagram on the battery holder. Note that there is a zip-lock bag containing four
desiccant packs shipped along with the batteries. As soon as the batteries are installed, take the
desiccant packs out of the zip-lock bag and place them inside the enclosure. Immediately close
and reseal the lid. This will help to prevent condensation of moisture within the enclosure. If
batteries and desiccants are installed in the office, be sure to seal the lid before going out to the
field.
2.2 Earth Ground Installation
The LC-2x16 provides lightning protection in the form of gas tube surge arrestors. In order for
these components to divert the energy from a lightning strike safely to ground, a good solid
electrical connection to earth ground needs to be made. A grounding rod should be driven (or
other suitable attachment to earth utilized) to ground the system and provide a path to earth in the
event of a lightning strike. A 6' to 8' copper stake with appropriate large gauge wire (12 AWG or
larger) connected to the LC-2x16 enclosure is suggested. The stake should be driven as close to
the datalogger as possible, and to a depth of at least three feet (one meter). A copper grounding
lug is supplied on the exterior of the LC-2x16 enclosure to provide connection to this wire from
the grounding rod.