Panametrics PanaFlow LZ, Руководство пользователя

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4.2 Remote mounting
The standard flow transmitter enclosure is a powder-
coated, aluminum, IP67 explosion-proof enclosure.
Typically, the enclosure is mounted as close as possible
to the transducers. When choosing a site for a remote-
mount installation, which is recommended for process
temperatures exceeding 150°C, make sure the location
permits easy access to the enclosure for programming,
maintenance and service.
Attention!
For compliance with the European Union’s
Low Voltage Directive, this unit requires an
external power disconnect device such as
a switch or circuit breaker. The disconnect
device must be marked as such, clearly
visible, directly accessible, and located within
1.8 m (6 ft) of the transmitter.
4.3 Cable lengths
Locate the flow transmitter as close as possible to the
transducers. The maximum distance from the transducers
for remote mounting is 1000 ft (300 m) using RG-62 coaxial
cable or equivalent. If longer distances are required, consult
the factory for assistance.
4.4 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, and be sure to follow the
manufacturer’s installation guidelines if cable glands are
provided.
4.5 Insulation
Do not place thermal insulation on or around the transducer
locations or the flow transmitter. The enclosures act as heat
sinks that protect against high and low temperatures.
4.6 Vibration exposure
considerations
Whenever possible, install the flow transmitter in a location
isolated from vibrations. Avoid installing it near equipment
that generates low-frequency, high-energy random
vibrations.
4.7 Sunlight exposure
The installer should consider and limit exposure of the flow
transmitter to direct sunlight. Sunshades should be utilized
in extreme environments.
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