Hazardous Locations
Selected models of the vbBalancer range have been approved by
the Canadian Standards Association (CSA) for use in hazardous
locations meeting this classification: Class I, Division 2, Groups A, B,
C, D.
Those models are clearly identified with the CSA logo and a
Hazardous Location information panel. Models without those
markings are NOT approved for operation in hazardous locations.
The Class I Div 2 classification is officially defined in the Canadian
Electrical Code part 1, but can be summarized as:
A location in which volatile flammable gases or vapors are present
but confined within closed systems from which they can escape only
in case of accidental rupture or abnormal operation; or in which
ignitable concentrations of gases are normally prevented by positive
pressure or mechanical ventilation, and which might become
hazardous through abnormal operation of the ventilation equipment.
The approval specifically covers use in the United States of America
and also any other countries which recognize the CSA certification.
When using a certified vbBalancer in a hazardous location, the
installation must comply with the vbX Installation Control Drawing for
Hazardous Locations, including all its foot-notes and warnings. This
drawing, number CIL2100VBX, is inserted on the following page.
The vbBalancer instrument will be supplied complete with
appropriate sensors for use in Class I Div 2 environments. As
indicated on the drawing, alternative sensors may be used, provided
they are certified for use in these locations and their entity
parameters meet the limits shown on the drawing.
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