RF-Shielded Access Door for EMI Test Chambers | Specifications & Verification

Product Specifications

Technical details and manufacturing context for RF-shielded Access Door

Definition

The RF-shielded Access Door is a critical component of an Industrial Electromagnetic Interference (EMI) Shielding Test Chamber System. It provides a secure, shielded entry point, engineered to prevent radio frequency (RF) leakage. This ensures the chamber's internal environment remains isolated from external electromagnetic interference and that emissions from internal tests are contained. Such containment is essential for accurate, repeatable testing of electronic devices and components for electromagnetic compatibility (EMC). The door is designed for use in facilities that conduct EMC testing, where maintaining the integrity of the Faraday cage is paramount. Its construction typically involves a conductive gasket, such as beryllium copper finger stock or conductive elastomer, compressed against a flat, conductive knife-edge surface on the door frame. This metal-to-metal contact forms a low-impedance electrical path, effectively extending the chamber's shielding across the doorway. The door is available in custom sizes, with a standard clear opening of 900×2000 mm, and offers shielding effectiveness of at least 100 dB from 10 kHz to 10 GHz, tested per IEC 61000-4-23. It operates within a temperature range of -40 to 85 °C (non-condensing) and provides ingress protection rated IP54 to IP65 per IEC 60529. The door leaf thickness ranges from 50 to 80 mm, and the weight varies from 150 to 300 kg depending on size and material. The door frame is made of stainless steel 304 (ASTM A240), and the gasket material is silicone (ASTM D2000). The sealing pressure is 1.0–1.6 MPa, and the closing force is 50–100 N. The door can be hinged or sliding, with a maximum opening angle of 90 to 180 degrees. The surface finish is Ra 1.6–3.2 μm per ISO 1302, with a corrosion-resistant coating. All listed values are reference ranges; verify model-specific specifications with the legal manufacturer or supplier.

Working Principle

The door creates a continuous conductive seal around its perimeter when closed. This is achieved by compressing a conductive gasket (e.g., beryllium copper finger stock or conductive elastomer) against a flat, conductive knife-edge surface on the door frame. The metal-to-metal contact forms a low-impedance electrical path, effectively extending the chamber's Faraday cage across the doorway. This prevents RF energy from passing through the gap, maintaining shielding integrity. The sealing pressure and closing force are critical to ensure proper compression of the gasket, as insufficient pressure can compromise shielding effectiveness.

Common Materials

Galvanized Steel, Aluminum Alloy, Beryllium Copper Finger Stock Gasket

Technical Parameters

Parameter	Typical range	Notes & selection driver
Clear Opening Size	900×2000 mm	Custom sizes available
Shielding Effectiveness	≥100 dB	At 10 kHz to 10 GHzIEC 61000-4-23
Operating Temperature	-40–85 °C	Non-condensing
Ingress Protection	IP54–IP65	Dust-tight and water-resistantIEC 60529
Door Leaf Thickness	50–80 mm	Determines rigidity and shielding
Weight	150–300 kg	Depends on size and material
Surface Finish	Ra 1.6–3.2 μm	Corrosion-resistant coatingISO 1302
Door Frame Material	304 SS	Stainless steel for durabilityASTM A240
Gasket Material	Silicone	Conductive elastomer for EMIASTM D2000
Closing Force	50–100 N	Ensures proper compression
Max Opening Angle	90–180 °	Hinged or sliding options

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Door Panel Part
The primary shielded surface, typically a sandwich of conductive metal sheets.

Material: Galvanized Steel
RF Sealing Gasket Part
Creates the continuous conductive seal between the door and the frame when compressed.

Material: Beryllium Copper Finger Stock
Knife-Edge Frame Part
The flat, conductive surface on the chamber wall against which the gasket compresses to form the seal.

Material: Aluminum Alloy
Latching Mechanism
Applies uniform pressure around the door perimeter to compress the gasket evenly against the knife-edge.

Material: Stainless Steel

Manufacturers of RF-shielded Access Door

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Frequently Asked Questions

What is the shielding effectiveness of this door?

The door provides shielding effectiveness of at least 100 dB from 10 kHz to 10 GHz, tested per IEC 61000-4-23. This is a reference value; confirm the actual performance for your specific model and application with the manufacturer.

What materials are used in the door construction?

The door frame is made of stainless steel 304 (ASTM A240), and the gasket is silicone (ASTM D2000). The door leaf may use galvanized steel or aluminum alloy, and the gasket may include beryllium copper finger stock. Verify material grades with the supplier.

Can the door be customized for different opening sizes?

Yes, custom sizes are available. The standard clear opening is 900×2000 mm, but other dimensions can be provided. Contact the manufacturer to discuss your requirements and confirm feasibility.

What maintenance is required for the door?

Regularly inspect the conductive gasket for wear or damage, and ensure the sealing surfaces are clean and free of corrosion. Check the closing force and sealing pressure periodically. If shielding effectiveness degrades, replace the gasket and verify the door alignment.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 0.5 psi differential
other spec:	Shielding effectiveness: 100 dB @ 10 MHz to 18 GHz
temperature:	-40°C to +85°C

RF-shielded Access Door

Product Specifications

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Reliability & Engineering Risk Analysis

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