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Commonly Requested Purge & Pressurization Options

1.What mounting options are available?

Panel Mount: The pneumatic regulators and valves sit inside the pressurized enclosure.The unit requires an external sensor to measure local atmospheric pressure.

Remote Purge System: You can locate the purge system aay !rom the enclosure"

although the distance should not #e too great. $e ould #e delighted to advise.

Relief Valve: This is normally sited diagonally opposite the purge air inlet. %lternative

positions are possi#le" i! the purge air !lo thoroughly circulates through the enclosure.

Complex enclosures may require a purge test to prove the purge system is e!!ective.

SmartPurge II: ere the Relie! 'alve is part o! the main enclosure. The intrinsically( sa!e

purge air inlet valve is located separately.

2. What is the largest pressurize en!losure size?

Our )*C*x+%T*, certi!ication ena#les us to deliver certi!ied enclosures up to --/ litres

0 12//mm x 23//mm x 2///mm.

The enclosure size can #e much larger. $e sometimes ship enclosures in sections" !or on(

site assem#ly. oever" the air(!lo rate and distri#ution requires s4illed design. 5arge

complex enclosures may require a purge test that proves the purging is e!!ective.

". What output s#it!hes are available?

*xpo6s expertise supports all electrical requirements and local variations. Common

customer requests include:

$P% option&7rings system(generated pneumatic signals to 2+38 9PT #ul4head !ittings" so

you can pipe the signal onard.

$IS option: has an internal sitch or sitches.

$IS '(purge option: These units are !or ivision 1+;one 1 installation. The +)< option

delivers an encapsulated internal sitch:

5a#elled as *x m =%T*," >anu!acturers eclaration? and hermetically sealed =@

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)ncorporates poer inter!acing relays & terminals ithin the =*x e? product enclosure

A

)ncludes poer()nterloc4 terminals 0 up to 1/'ac+D% or 13'C+%A