Series 81 Shielded Rooms for Government

Key Features

• "Hat & Flat" clamping system for shield integrity
• Architectural, Electrical Options
• Can be used in applications such as embassies and consulates or TEMPEST security areas
• Easy to move - relocation service available
• Modular panel construction
• Prevents sensitive information from being electronically intercepted
• Standard and custom designs are available

Description

The Series 81 Shielded Rooms have modular panels which mean that enclosures can be build to almost any dimensional configuration. Thirty-six standard formations are available, or we can custom design one for you.

The heart of the shielding system are three-quarter inch thick dimensionally stable cores which are laminated on both sides with 26-gauge sheet steel. (Cores meet ANSI A208.1 specifications.) The steel laminate provides the best attenuation to magnetic and electric fields, and plane waves.

Panels are joined together with a one-eighth-inch "hat & flat" clamping system. No special tools are required for construction. Enclosures can be erected, dismantled, and moved to another location as needed. Enclosures are self-standing and require no attachment to the parent building.

Materials

Our Series 81 Shielded Room features a steel lining because steel is excellent for reflecting and attenuating EMI/RFI signals. The Series 81 offers optional gauge thicknesses, ranging from 28- to 11-gauge, the advantages of high shielding performance, durability and ideal electrical continuity.

Galvanized steel also provides excellent low frequency AC magnetic field attenuation characteristics.

Performance

The Series 81 Shielded Room: A Time-Proven and Tested Design
The Series 81 Shielded Room offers a time-proven design that has provided excellent EMI/RFI shielding effectiveness for thousands of users. The Series 81 shielding system is the most commonly specified construction for NSA 65-6/NSA 94-106 testing requirements. It delivers high performance attenuation over a broad frequency range. The Series 81 complies with a variety of other specifications including:

Federal Specification SS-A-118B - Flame Resistance Test
ASTM E84-81-A - Test for Surface Burning Characteristics of Building Materials
ASTM E90-83 - Recommended Practice for Laboratory Measurements of Airborne Sound Transmission Loss of Building Partitions

The Series 81 also complies with Universal Building Codes (UBC) and can be assembled in the most stringent seismic zones.

Combining performance and value, the Series 81 meets a wide range of critical testing needs.

Construction

The Series 81 Shielded Enclosure consists of shielded modular panel sections that are assembled with a clamping system into a self-supporting room structure. Sheets of 28-gauge galvanized steel are laminated to a 3/4-inch, high-density particle and/or plywood board core. Each panel section provides excellent stability to airborne moisture-induced warping and structure strength that lend to its rugged structural design.

Series 81 panels are joined together with an extruded “hat and flat” and “cove” clamping system to provide uniform and consistent pressure contact against the shielded panel mating surfaces. These structural clamping sections are zinc-plated to resist corrosion and are joined with self-taping zinc-plated fasteners spaced four inches on center to ensure a secure shield. The corners of the shielded room are secured with precision-machined trihedral end cap sections.

To maintain electrical isolation, a 6-mil dielectric vapor barrier and 1/8" dielectric underlayment are placed beneath the shielded floor panels. Counter-sunk floor screws in the clamping system ensure a smooth floor surface. Attractive vinyl floor tiles are applied with adhesives over the exposed steel surface as a durable wearing surface. In addition, the Series 81 enclosure can be converted into a ferrite-lined and/or conventional absorber-lined anechoic chamber. This feature makes it a truly flexible shielding solution.

Shielded Doors

Series 81 comes with a choice of two door systems. A Single Knife Edge (SKE) door offers a two-point latching system and recessed contact mechanism (RCM) with enclosed beryllium contact fingers. The Double Electrical Contact (DEC) door system employs a three-point cam latching system with heavy gauge phosphor bronze contact fingers. Both door systems can be equipped with fully- or semi-automatic latching devices for areas of high usage, or where ease of accessibility is a concern. All enclosures can be fitted with a variety of other customized access door systems for personnel and equipment, enabling users to meet a variety of operational, security and extended shielding performance objectives.

EMI Power and Signal Line Filters

We manufacture a complete line of power and signal line filters which are available to meet the current MIL-STD 220A, MIL-F-15733 and UL 1283 standards. These filters are available for all types of EMI/RFI shielded enclosure requirements and can be supplied in stand-alone filters or mounted within an electrical-style cabinet.

Custom filters are also available in special designs to meet customer specifications. These filters are used with the customer's equipment to comply with MIL-STD-461/2/3, FCC, VDE, CSA and other specifications requiring stringent control of RF energy conducted on the power lines of various equipment and systems.

Waveguide Feedthroughs

Waveguide feedthroughs, which preserve the shielded construction, are available for the introduction of water, gas or air. Specially designed waveguide feedthroughs can transport non-conductive gases or liquids into an enclosure. These assemblies are available in brass or steel, in sizes ranging from 1/4" to 4" in diameter.

Other accessories include door ramps, lights, exhaust fans and connector panels.

RF Floors

The Series 71 and 81 shielded enclosures feature modular floor panels. The floor panels will support a total floor loading of 1,000 lbs. per sq. ft. distributed evenly over the building floor. The floor screws are countersunk so that all floor clamps and floor tiles are flush mounted for a smooth surface.

Installation and Testing

As the industry's most experienced shielding experts, we can provide a ready-to-install standard enclosure, or a custom system for individual needs. Our personnel are fully trained in RF diagnostic testing, application and theory. Our installation team can also perform an RF verification testing of the completed shield to certify its performance and provide you with a written test report.

Warranty

All Series 71 and 81 enclosures are guaranteed against defective materials and workmanship and to retain the specified RF shielded characteristics for a period of one year.

Standard and Custom Sizes

You may choose from a range of standard-sized Series 71 and 81 enclosures, or we can custom-design a room to your exact specifications.