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Serviceline Industrial Sensors
Sales phone: 0161 622 6308
Tech phone: 0161 622 6311
Fax: 0161 624 6537
Serviceline Explosion Protection
Sales phone: 0161 622 6309
Tech phone: 0161 622 6313
Fax: 0161 624 6537

Purge+Pressurization Systems

Pressurized enclosure system

The Ex p pressurized encapsulation is an explosion protection method which allows the use of cost-effective devices without explosion protection approval in explosion hazardous areas up to zone 1.

A pressurizing system consists of a control unit with integrated pressure monitor, solenoid valve and a pressure-proof housing.

Air or an inert gas such as nitrogen is fed into the enclosure housing, thus producing a non-explosive atmosphere preventing any present ignition sources from triggering an explosion.

The control unit, in conjunction with the pressure switch, monitors the circulation process and the pressure. After the initial purging is completed it allows to activate the electrical device. If the enclosure is opened the pressure decreases and the control unit disconnects the electrical device from the power supply.