Posted to News on 18th Sep 2007, 19:24
Breathers prevent damage to enclosures and instruments
Brownell offers a range of immersion-proof breathers that prevent pressure from building up in electronic enclosures and instrument casings due to internal heating or altitude changes. Without the use of such breathers, excess pressure can cause enclosures to fracture - or designers have to specify thicker, heavier wall thicknesses to cope with the pressure, or restrict the equipment's operating parameters.
Breathers allow an enclosure to 'breathe' (transfer air in and out) but withstand driving rain or even total immersion in water to a depth of up to 5m. Made from robust and hard-wearing plastics, the breathers can pass high flow rates of air that can result from rapid variations in pressure - caused by temperature or altitude changes.
The breathers can be screwed into threaded bosses or mounted through holes, using a lock nut that is provided. In addition, the units can be supplied with desiccator tubes for removal of moisture.
If a controlled environment within the equipment is required, then a humidity absorber can be fitted in the rear of most immersion breathers. These absorbers are filled with beaded silica gel to prevent humidity damage and condensation.
Unit 2, Abbey Road Industrial Park
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UNITED KINGDOM
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