Venting about enclosure design

Considerations for enclosure design include protection against moisture or contaminants from environmental conditions, such as heavy-duty washdowns or exposure to temperature or pressure differentials.

08/07/2003



Gore Membrane Vents are said to withstand up to 1,500 psi washdown.

Considerations for enclosure design include protection against moisture or contaminants from environmental conditions, such as heavy-duty washdowns or exposure to temperature or pressure differentials. Hermetically sealing enclosures provides safety and security but is expensive and limits access, compared to alternatives. Potting compounds can provide a remedy, but these also add cost and prevent access for upgrades or repairs. Gaskets can seal and waterproof enclosures, but wear over time and, even with a good design, can fail with improper use. Vents provide a seal and equalize interior and exterior pressure, help prevent condensation, allow evaporation, and, when batteries are in use, permit escape of explosive gases that may form if overcharging occurs.

Because, like gaskets, vents can create leaking problems over time, material selection is important for vent design, according to W.L. Gore & Associates. Gore recommends using vent made from a semi-permeable membrane. It makes vents from microporous expanded polytetrafluoroethylene (ePTFE) to protect against bugs, cleaning chemicals, and other potential contaminants, while allowing air and gases to pass in or out. Gore Membrane Vents, for example, have ratings up to IP69K, for 1,500 psi washdown.

Safeline Inc., supplier of metal-detection equipment for food and pharmaceutical industries, began using the Gore vents in 2000. ''The Gore vents provide an alternative solution to desiccant packs and don’t need replacing,'' says Oscar Jeter of Safeline. ''They provide the results we are looking for.'' Other diverse applications include military laptop computers for desert use, ski goggles, broadband communications systems, and police radios.

Gore Membrane Vents meet requirements of International Standard IEC 529 and molded parts comply with IP Code IP68 and IP69K. Vents come in a range of sizes and ratings and are available as screw-in or snap-in molded parts. Unobtrusive adhesive patches are available; these meet the IP67 standards. Vents can also be custom designed to meet customer specifications.

Gore says it began use of expanded PTFE in membrane filtration more than 26 years ago.

For more information from the Gore Web site, click here .





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Robotic safety, collaboration, standards; DCS migration tips; IT/OT convergence; 2017 Control Engineering Salary and Career Survey
Integrated mobility; Artificial intelligence; Predictive motion control; Sensors and control system inputs; Asset Management; Cybersecurity
Big Data and IIoT value; Monitoring Big Data; Robotics safety standards and programming; Learning about PID
Featured articles highlight technologies that enable the Industrial Internet of Things, IIoT-related products and strategies to get data more easily to the user.
This article collection contains several articles on how automation and controls are helping human-machine interface (HMI) hardware and software advance.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Mobility as the means to offshore innovation; Preventing another Deepwater Horizon; ROVs as subsea robots; SCADA and the radio spectrum
Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Big Data and bigger solutions; Tablet technologies; SCADA developments
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me