Automated pneumatic purger

Details Automated pneumatic purger Automated pneumatic purger

1997-09-30

2000-09-19

Walton, George L.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Cleaning or steam sterilizing

137312, 137377, 137382, 1374875, 137554, 220 881, 220 883, 307118, 307328, 340611, 361 2, 454184, 454238, 454239, 454359, B65D 2500, H02B 13055, F24F 1102

Patent

active

061197157

ABSTRACT:
An automatic control system for providing pneumatic purging protection for a sealed enclosure containing electrical equipment in accordance with the National Fire Protection Association standards. The system supplies a purge gas under a pre-ordained pressure to an enclosure residing in a hazardous location. The system monitors the gas pressure to maintain the pressure within desired limits. In the event that the integrity of the sealed enclosure is disrupted, the control system disables the electrical equipment and executes a rapid-response purge cycle to re-enable the electrical equipment as quickly as possible.

REFERENCES:
patent: 4802502 (1989-02-01), Williams
patent: 5101710 (1992-04-01), Baucom
patent: 5146103 (1992-09-01), Obata et al.

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