Pulsar Zenith 140, Инструкция по эксплуатации

Страница: 20 / 161

ZENITH 140 INSTRUCTION MANUAL
20
Power
The Zenith 140 can operate from mains AC and automatically from DC 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. Wire the
transducer to the Zenith 140
’s transducer terminals, as follows:
Transducer 1
TERMINAL CONNECTION DETAILS
Red:
Power
White:
Signal
Black:
0Volts
Green:
Screen
32 31 30 30
Transducer 2
TERMINAL CONNECTION DETAILS
Red:
Power
White:
Signal
Black:
0Volts
Green:
Screen
35 34 33 33
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.
For
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 Zenith.
For
Zone 0 a transducer certified to Sira 02ATEX2103X is used, which must
be connected to the Zenith controller via an external Zener barrier.
See transducer label for certification details.
When using the Zenith 140 in a single transducer mode, to measure space,
level or distance, the transducer should be connected to Transducer 1
input terminals. In applications where it is required to measure Differential ,
then the upstream transducer should be connected to Transducer 1 input
terminals and the downstream transducer to Transducer 2 input terminals.
In cases where the Zenith 140 is required to measure Average , transducers
can be connected as required .