PULSAR MEASUREMENT
21
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/dBR transducers is certified for use in hazardous areas
and different models are available for use in Zone 1 or Zone 0. DBR16 is
also available for use up to Zone 0. Wire the transducer to the FlowCERT
Lite transducer terminals as follows:
Transducer 1
TERMINAL CONNECTION DETAILS
Unit Type
Green:
Screen
Red:
Power
White:
Signal
3
Wall Mount
37
38
39
40
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
which in turn should be connected to the appropriate 0 volts’ terminal of the
FlowCERT Lite.
ATEX
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 FlowCERT Lite.
For
Zone 0
a transducer certified to
Sira 02ATEX2103X
is
used, which must
be connected to the FlowCERT
controller via an external Zener barrier.
FM
For
EEx m
(
Zone 1)
applications a transducer certified to
FM Class I Div 1
Group A, B, C & D, ClassII Div 1 Group E, F & G, Class III
is used, and must
be supplied via a 1500A breaking fuse, which is fitted as standard to the
FlowCERT level controller. Restrictions do not use in the presence of these
groups of Chemicals, Aliphatic Hydrocarbons, Ketones or Esters.
For
EEx ia
(
I.S.)
a transducer certified to
FM Class I Div 1 Group A, B, C &
D, ClassII Div 1 Group E, F & G
is
used, which must be connected to the
FlowCERT via an external Zener barrier. See transducer label for certification
details.
