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Close Proximity Antenna (CPA). The CPA is sensitive
only to very near signals
and designed for use where
multiple pigs are extremely close to one
another such as in launchers and receivers.
POWER
The CD42-STS is powered by six (6) D-cell alkaline batteries. The
batteries are located in the unit's stainless steel housing. Changing
these batteries requires disassembly of the housing (see pg. 18).
The CD42-STS will operate for up to 60 hours (2.5 days) on a change of
batteries.
DETECTION METHODS
The CD42-STS can track and locate any pig or inline inspection (ILI) tool
equipped with a 22 Hz electromagnetic transmitter. Shown here are
some of the 22 Hz transmitters manufactured by CDI.
CD42-STS Subsea Diver/ROV Pig Location and Tracking System
The 26.4-in. [670.5 mm] antenna may
be removed and replaced with an optional
ANTENNA
Page 5 of 36
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