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Attenuation vents
Our VH Series of lightweight aluminium honeycomb attenuatung ventilation panels comprise of forms of conductive airflow media retained within an aluminium extrusion. They are designed for use in racks and other forms of commercial enclosure.Applications:
VH Series of EMC vents can be mounted onto most forms of shielded enclosure where airflow is needed, either over cooling fans or by convection. They can be mounted anywhere on the enclosure and can be fitted with protective 'kickplates' to protect the honeycomb material from accidental damage.
Where they may be exposed to the elements the vents can be fitted with 'slant' honeycomb which provides a downward facing aperture, preventing the ingress of rainwater. This has the added benefits of directional airflow and increased attenuation due to the higher aspect-ratio of the cell structure.
Honeycomb ventilation panels usually supplied in a gasketed ready-to-mount form which either fits around the aperture in the equipment (non-flanged style) or is inset into the enclosure (flanged style). Depending on the performance requirements for the application, they can be mounted by bolting through clearance holes in the frame, through the use of captive or threaded inserts.
Aluminium honeycomb material is formed by expanding a bonded aluminium foil into a honeycomb structure. This process, which is common to all honeycomb manufacturers, produces a material which is 'polarised' and is conductive either horizontally or vertically. To overcome polarisation problems two layers of honeycomb, mounted at 90 degrees to each other, are used. Please contact us for futher information about polarisation.
Each cell in an attenuation vent acts as a waveguide and its performance is a function of its width/height and the ratio between the depth and width of the cell. Generally an aspect ration of 4 or 5:1 is used.
VH vents are finished to suit specific applications and can be protected by Alocrom 1000, 1200 or electroplating. We can also offer a chromate conversion which is RoSH compliant.
For further information about specifications, performance and how to order please visit our website, email info@p-p-t.co.uk or call us on 01376 550525.
Manufacturer/supplier's information
| Company name: | P & P Technology Ltd [ Homepage ] | |
| Business address: | Finch Drive Springwood Braintree Essex United Kingdom |
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| Zip/postal code: | CM7 2SF | |
| Telephone number: | +44 (0)1376 550525 | |
| Fax number: | +44 (0) 1376 552389 | |
| Contact name: | Gerry Steel [ Email ] |
Product groups: EMI shields EMI shielding gaskets
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