info at expoworldwide dot com
What is Purge & Pressurization?
faq_banner

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 Expo’s control units power-up electrical equipment, they first flush hazardous gas and dust from the enclosure or panel, cabinet, motor housing, etc., with clean uncontaminated air. The equipment inside the enclosure does not require approvals or certifications.

Generally, customers purge with instrument-grade compressed air. The flow rate and duration depends on the enclosure volume and national & international standards. Some customers purge with nitrogen – you can use other inert gases but nitrogen is commonly available.

Expo Technologies’ purge systems quickly and automatically get your equipment up & running. Our enclosures usually have doors for easy equipment maintenance,  and windows for quick instrument readings.  Operators can control the equipment using  operating push-buttons and switches on the outside. Please note that all components mounted outside the enclosure are potentially surrounded by hazardous gas and dust. These components must be suitably certified and approved.