Case Study: Military Ground Radar Manufacturer Required Custom EMI Shielding Vent for Cabinet
THE CHALLENGE
A manufacturer of mobile military ground radar systems required an air vent that would provide both high air flow and EMI shielding for an electronics enclosure cabinet on a ground vehicle.
DESIGN REQUIREMENTS
• Paint must be camouflaged per MIL-DTL-64159
• Airflow, EMI shielding, and tempest weather sealing
• Highly custom gasket configurations
KEY CUSTOMER REQUIREMENTS
• High air flow
• Excellent EMI shielding
• Colour matching to customer chassis
• High temp., humidity and salt/corrosion
• Environmental and weather sealing
CONCLUSION
Parker Chomerics designed a custom vent with additional EMI shielding and weather sealing gaskets for a mobile ground radar unit. Their in-house test services engineers put this design through a variety of performance tests including , temperature, humidity, salt fog/corrosion, and shielding.
The vent assembly passed both shielding tests, as well as the customer's visual inspections of what occurred during tests such as humidity and salt fog/corrosion. Overall, this was a successful qualification procedure.
THE SOLUTION
Parker Chomerics designed a custom air vent featuring a tin/e. nickel plated, single layer 1/8in cell aluminium honeycomb. The single layer allowed for maximum airflow, with the plating providing high EMI shielding performance.
A CHO-SEAL® co-extruded EMI gasket was fitted into a groove in the vent frame. This gasket features a single, homogeneous strip with one half being conductive and the other half providing weather sealing. Testing was performed and the assembly exceeded customer's shielding and sealing requirements.
PRODUCTS
EMI Shielded Air Vents and CHO-SEAL Co-Extruded Elastomers
This article was produced by Parker Chomerics. JHC Specialised Solutions are the exclusive authorised distributor for Parker Chomerics in Australia and New Zealand. Should you require any further information or wish to discuss a customised solution for your application, please contact JHC on +61 2 9531 7905 or sales@jhcss.com.au