7/25/2019 What is Purge & Pressurization

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What is Purge & Pressurization?

What is Purge & Pressurization?

Purge & pressurization enables you to use any electrical equipment inside an enclosure in a

hazardous location.

Before Expos control units poer!up electrical equipment" they first flush hazardous gas

and dust from the enclosure or panel" cabinet" motor housing" etc." ith clean

uncontaminated air. #he equipment inside the enclosure does not require appro$als or

certifications.

%enerally" customers purge ith instrument!grade compressed air. #he flo rate and

duration depends on the enclosure $olume and national & international standards. ome

customers purge ith nitrogen ' you can use other inert gases but nitrogen is commonly

a$ailable.Expo #echnologies purge systems quic(ly and automatically get your equipment up &

running. )ur enclosures usually ha$e doors for easy equipment maintenance" and indos

for quic( instrument readings. )perators can control the equipment using operating push!

buttons and sitches on the outside. Please note that all components mounted outside the

enclosure are potentially surrounded by hazardous gas and dust. #hese components must

be suitably certified and appro$ed.