Pulsar blackbox 134, Инструкция по эксплуатации

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13
Terminal Connections
Power
The
blackbox
can operate from mains AC and automatically from a DC power
source or battery backup, in the event of power failure, or can be operated
permanently from DC or batteries.
Transducer
The transducer should be installed, and connected, in accordance with the
installation instructions contained in the Transducer User Guide.
The entire range of, standard dB transducers are certified for use in hazardous
areas and different models, for each, are available for use in EEx m (Zone 1)
or EEx ia (Zone 0).
Wire the transducer to the
blackbox
transducer terminals as detailed below:
Red = Power (Terminal 19)
White = Signal (Terminal 20)
Black = 0 volts (Terminal 18)
Green (screen) = SCR (Terminal 17)
When using 2 core screened extension cable, the Black and Green wires of
the transducer should be connected to the screen of the extension cable and
connected to the 0 volts’ terminal (Terminal 18).
ATEX
For EEx m ( Zone 1) applications a transducer certified to Sira
02ATEX5104X is used, and must be supplied via a 4000A breaking fuse,
which is fitted as standard to the
BlackBox
level controller.
For EEx ia ( Zone 0) a transducer certified to Sira 02ATEX2103X is used,
which must be connected to the
blackbox
via an external Zener barrier.