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When installing a transducer in a hazardous area use an approved transducer
suitable for the proposed application as detailed below:
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
blackbox
level controller.
Restrictions do not use in the presence of these groups of Chemicals,
Aliphatic Hydro Carbons, 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
blackbox
via an external Zener barrier.
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.
See transducer label for certification details.
Important Information
Please note that if the output of the ultrasonic transducers used with
blackbox
are capable of emitting sound pressure levels in excess of
85dBA (above a reference sound pressure level of 20µPA), then the
blackbox
must be located remote from the transducer such that a sound
pressure level of 85dBA is not exceeded when standing at the
blackbox
in the operator’s position.
Care should be taken not to over tighten the screws.
