Double Knife Edge Door
​​ETS-Lindgren's Double Knife Edge Door (DKE) is a heavy-duty door, constructed of exceptionally rugged materials with designed-in reinforcements. 

 

 


​​ETS-Lindgren's Double Knife Edge Door (DKE) is a heavy-duty door, constructed of exceptionally rugged materials with designed-in reinforcements, making this door suitable for heavy industrial environments or frequent use applications with frequent use. Additionally, the ETS-Lindgren DKE Door is suitable for welded enclosures, modular systems and anechoic and ferrite-lined chambers, where the external mechanism makes it ideal for material application on its interior surface. ​​​​​

Key Product Information


Construction

The ETS-Lindgren DKE Door consists of a factory assembled leaf and frame which maintain electrical contact around the perimeter. The door panel is laminated on both sides with 22 gauge galvanized steel. Heavier gauges are available for improved magnetic field performance. The bronze double knife edge extrusion is mounted on the door leaf and the receiver housing is mounted to the frame. The two knife edges of the leaf mate with four rows of beryllium copper finger-stock mounted in the bronze recessed contact mechanism receiver housing. The beryllium finger-stock is easily maintainable and replaceable with standard tools. 
Each door leaf is supported by three heavy-duty aluminum hinges for sag-free mounting and latched by a three-point roller bearing latch assembly. These features serve to provide a high reliability door which will deliver many years of trouble-free service.
The DKE Door is available in the standard size of 0.91 m to 1.22 m  (3 ft to 4 ft) width and 2.13 m (7 ft) height, both single and double leaf, and custom fabricated sizes.

Performance

The DKE maintains 120 dB attenuation to 10 GHz, and 100 dB at 26 GHz. When tested in accordance with MIL-STD 285/IEEE-299, the DKE design exceeds the test requirements of NSA 65-6, NSA-94-106 and CID/09/12A.

Attenuation Levels

Magnetic Fields: 20 dB @ 1 KHz rising to 70 dB @ 14 KHz and 100 dB @ 200 KHz
Electric Fields: 90 dB @ 1 KHz rising to 120 dB from 10 KHz to 50 MHz
Plane Waves: 120 dB from 50 MHz to 10 GHz
Microwaves: 100 dB from 10 GHz to 26 GHz, decreasing to 80 dB @ 40 GHz
*DKE performance above 10 GHz can be enhanced using microwave absorber material.

Operation

Latching is accomplished manually by a heavy duty aluminum handle on both interior and exterior sides. The door pivots at a minimum of three hinge points on six thrust bearings. The cam driven, manual three-point latching mechanism consists of a gear driven welded latch bar, which is held in alignment by two latch bar bearing guide blocks. The six precision machined latch bar guides secure the assembly on the door leaf and drive three cam follower bearings into the door strikes mounted on the door frame.

 

 

Euroshield RFD-60 Swing Door http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100410Euroshield RFD-60 Swing Door
Single Knife Edge™ Doorhttp://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100401Single Knife Edge™ Door
PSD Pneumatic Sliding Door http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100406PSD Pneumatic Sliding Door
Auto-Latching Door System http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100403Auto-Latching Door System
Euroshield RFD-F/A-100 http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100407Euroshield RFD-F/A-100
Euroshield RFSD-100 Sliding Door http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100411Euroshield RFSD-100 Sliding Door
Euroshield SRFSD-100 sliding doors http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100412Euroshield SRFSD-100 sliding doors
Double Knife Edge Door http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100402Double Knife Edge Door
ASDS Door http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100404ASDS Door
Euroshield iRFD-100 Swing Door http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100409Euroshield iRFD-100 Swing Door
Euroshield SRFSD-F/A-100 http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100408Euroshield SRFSD-F/A-100

Key Features


  • Precision-Machined Aluminum Hinges with Six Thrust Bearings for Sag-free Mounting and Smooth Operation
  • A 5.08 cm (2 in) Bronze Center Bushing, Capped with 10.16 cm (4 in) Brass Cover Plates, Penetrating the Door Leaf Core 
  • Four Rows of Beryllium Copper Finger-stock Around the Perimeter of RCM Receiver
  • Heavy-duty Cam Latch Strikes for Three-point Latching, Guided by Precision Machined Latch Bar Guides 
  • Easy-to-retrofit with Existing Door on Standard Modular and Welded Shielded Enclosure

Literature and Videos


 

 

http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100402<a href="/sites/etsauthor/ProductBrochures/General%20Brochures/Test_and_Measurement_Full_Line.pdf"><img alt="" src="/_layouts/15/IMAGES/icpdf.png" />Test_and_Measurement_Full_Line.pdf</a>

 

 

http://www.ets-lindgren.com/products/shielding/industrial-shielding/rf-shielded-doors/11004/1100402

L o a d i n g

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