Cable Lengths; Transducer Cables; Installing A Flowcell; Mounting The At868 Electronics Enclosure - GE AquaTrans AT868 User Manual

Cable Lengths

Transducer Cables

Installing a Flowcell

Mounting the AT868
Electronics Enclosure
Installation
Locate the electronics enclosure as close as possible to the
flowcell/transducers, preferably directly on the flowcell. However,
GE Infrastructure Sensing 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.
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 the factory.
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).
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. This approach
allows the transducers to be aligned and calibrated before inserting
the spoolpiece into the pipeline. For detailed instructions on installing
the transducers and/or spoolpiece, refer to the supplied drawings and
the enclosed GE Infrastructure Sensing Liquid Transducer
Installation Guide (916-055).
The standard Model AT868 electronics package is housed in an
power-coated aluminum NEMA 4X, IP66 weatherproof enclosure
suitable for indoor or outdoor use. Refer to Figure 1-3 on page 1-13
for the mounting dimensions and the weight of this enclosure.
September 2004
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