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2.3. Cable Installation
The cable should be routed in such a way so as to minimize the possibility of damage due to
moving equipment, debris or other causes.
Cables may be spliced to lengthen them, without affecting gage readings. Always
waterproof the splice completely, preferably using an epoxy based splice kit such the 3M
Scotchcast
, model 82-A1. These kits are available from the factory.
2.4. Electrical Noise
Care should be exercised when installing instrument cables to keep them as far away as
possible from sources of electrical interference such as power lines, generators, motors,
transformers, arc welders, etc.
Cables should never be buried or run with AC power
lines!
The instrument cables will pick up the 50 or 60 Hz (or other frequency) noise from the
power cable and this will likely cause a problem obtaining a stable reading. Contact the
factory concerning filtering options available for use with the Geokon dataloggers and
readouts should difficulties arise.
2.5. Initial Readings
Initial readings must be taken
and carefully recorded along with the temperature at the time
of installation. Take the initial readings while the gage is in position, just prior to placing the
second lift of concrete. Take readings again after the second lift of concrete has cured.
