Our high performace EMI Shielded honeycomb ventilation panels are custom manufactured from steel, brass or stainless steel.
STANDARD PRODUCTS
EMI screened thin vents
Our high performace EMI Shielded honeycomb ventilation panels are custom manufactured from steel, brass or stainless steel.
Our thin shielded vent panels are effectively slimmer versions of the EMI shielded airfilters but with different filtration media. The thin EMI Shielding vents are available in two basic types referred to as A and B for ease of reference.
Thin Vent A panels incorporate an expanded aluminium mesh which is crimped into an aluminium extrusion frame. The Thin Vent A style offers excellent dust filtration and EMI shielding performance but considerably restricted airflow.
Thin Vent B panels incorporate a woven aluminium or expanded Monel foil crimped into an extruded aluminium frame.
Applications
EMI shielded thin vent panels are designed for enclosures or racks where RF attenuation and protection from the ingress of foreign bodies is required but space is at a premium.
The type A expanded aluminium mesh panels are nominally 6.0mm thick inside a 4.8mm thick frame and provide attenuation levels considerably higher than the type B woven aluminium and expanded Monel foil types which have a very small effect on airflow but offer less shielding effectiveness.
All three shielding materials have very different properties and their airflow characteristics are a function of size, positioning, application and airflow source / volume. We suggest that a sample of the materials is requested for customer testing before specifications are finalised – please ask our sales office.
Find more information, such as our standard sizes etc, in our catalogue.
CATALOGUE
Detailed information
Specifications
For gasket material specifications please refer to the knitted mesh gaskets, conductively loaded silicone and oriented wires in silicone pages.
Performance
| Frequency | Field | Type VT (a) | Type VT (b1) | Type VT (b2) |
| 10KHz | H | 25 | 10 | 10 |
| 100KHZ | H | 45 | 25 | 18 |
| 1MHz | H | 58 | 35 | 36 |
| 1MHz | E | >100 | 93 | >100 |
| 10MHz | E | >100 | 95 | >100 |
| 100MHz | E | >100 | 97 | 95 |
| 1GHz | P | 73 | 54 | 45 |
| 10GHz | P | 54 | 18 | 18 |
Note:
VT(A) media is expanded aluminium mesh
VT(B1) media is woven aluminium 0.5mm @ 16 OPI (openings per inch)
VT(B2) media is expanded Monel mesh 0.5mm @ 12 OPI
Tolerances
| Overall dimensions | +/- 0.8mm |
| Fixing holes/fasteners | +/- 0.5mm |
| with jigs +/- 0.2mm |
How to order
Specify: Shielding Series-Frame Style-Vent Media-Overall Size-Number 0f Fixings-Fixing Type/Size
Where possible please provide a detailed drawing.
| Shielding Series | Frame Style | Vent Media | Overall Size | Fixings (no.) | Fixing Type |
| VT (a) | TV1 | 05 = Expanded Aluminium | xxxx-xxxx | xx | xx |
| VT (b) | TV2 | 06 = Woven Aluminium | |||
| TV3 | 07 = Expaned Monel |
Example - Notes
Example:
VT(A)-TV2-05-2320-2320-12-T/H(M4) specifies a thin vent utilising expanded and crimped aluminium alloy media within a TV2 frame with 12 size M4 through fixing holes. The gasket should be specified as shown in the gasket materials sections of the website & catalogue.
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Downloads
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Material data sheets
These documents contain information on the potential hazards (health, fire, reactivity and environmental) and how to work safely with the chemical product.
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Application notes
These mini-guides have been designed to help give a quick overview of the product families, their main advantages, usual applications and points to concider during the design stages of a project.
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Product catalogues
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