GE AquaTrans AT868, Abridged Manual

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Installation 1-3
September 2004
Cable Lengths
Locate the electronics enclosure as close as possible to the flowcell,
preferably directly on the flowcell. However, GE can supply
transducer cables up to 1,000 ft (300 m) in length for remote location
of the electronics enclosure. If longer cables are required, consult the
factory for assistance.
Transducer Cables
When installing the transducer cables, always observe established
standard practices for the installation of electrical cables. Do not route
transducer cables alongside high amperage AC power lines or any
other cables that could cause electrical interference. Also, protect the
transducer cables and connections from the weather and corrosive
atmospheres.
Note: If you are using your own cables to connect the transducers to
the electronics console, they must have electrical
characteristics identical to the cables supplied by GE. For
transducer frequencies up to 2 MHz, the cables in each pair
must be the same length within ±4 in. (±10 cm). For
transducer frequencies above 2 MHz, the cables in each pair
must be the same length within ±0.5 in. (±1.25 cm).
Installing a Flowcell
A flowcell is the section of pipe where the transducers are mounted. It
can be created either by mounting the transducers on the existing
pipeline or by mounting them on a
spoolpiece . A spoolpiece is a
separately manufactured pipe section, matched to the existing pipe,
which contains ports for mounting the transducers. A spoolpiece
allows the transducers to be aligned and calibrated before inserting
the flowcell into the pipeline.