VEGA 33_Ex-33 - Manual (Page 3)

Module-33/Ex-33 3
Product description
Connection instructions for
Ex-applications
Mounting in carriers and housings
When a VEGA-instrument with Ex-approval is
mounted in a carrier or a single housing, a
module Ex-33 of VEGA must be used. Keep a
distance of at least 2 TE (10,16 mm) to module
cards of foreign manufacturers. The modules
or instruments must be generally installed
outside the hazardous area or further Ex-
protective measures must be taken.
Ex-separating chamber
An Ex-separating chamber (with modules for
the installation of VEGATRENN 547 VEx and
548 VEx) the wide separating chamber must
be used) must be mounted to the connections
of the Ex-module to guarantee sufficient air
and creeping distances. Proceed as follows:
Loop the lines of the intrinsically safe circuit
through the separating chamber and connect
to the appropriate position of the multipoint
connector.
When using a multipoint connector with screw
connection, the upper marked section on the
separating chamber of module Ex-33 E must
be broken off first.
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Separating chamber
wide separating
chamber
Shift the separating chamber up to the
multipoint connector and fasten with the inte-
gral nut to the protruding fixing screw of the
multipoint connector.