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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.
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