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RF Shielded Glass

TEMPEST SECURITY
SYSTEMS, INC.

 

Pilkington Architectural Glass has developed and patented a range of security glasses called DATASTOP - both laminates and sealed units - specifically designed to reduce the transmission of EMI / RFI (electronic noise), UV (Ultraviolet) and IR (Ifrared).

DATASTOP & TEMPEST IR glass are marketed worldwide exclusively by Tempest Security Systems.

DATASTOP glass can be used as windows or glazed panels in conjunction with shielded external walls, internal partitions or enclosures designed to provide good attenuation using the "Faraday Cage Principle".

DATASTOP glass can be used in the external and/or internal glazing of buildings, viewing panels in shielded cabinets, and OEM viewing panels to meet most shielding regulations.
 

The complete absence of any metal mesh combined with the other qualities listed below makes the product unique.

 

EMI / RFI / UV / IR Shielded Glass

Picture

Model

Features

Coming Soon

DataStop Performance

 

TEMPEST IR

 

Architectural Glass

 

CLEAR - No Wire

 

DataStop + Tempest IR Shielded Glass

Blocks RF, UV & IR

 

10 Year Warranty

 

  • Attenuation over a wide range of frequencies

  • NO Metal Mesh or Wire

  • NOT a Film

  • NO Degradation Over Time

  • Near normal optical clarity and light transmission

  • High impact resistant safety glass

  • Very high thermal insulation

  • Available in large sizes (up to 2000mm x 3500mm)

  • TEMPEST-IR reduces UVA/UVB 99.6%

  • Easy edge connection methods

 

RF Attenuation

> 42 dB    (20 MHz - 2.0 GHz)

> 50 dB  (2.0 GHz - 10.0 GHz)

UV Attenuation

 99.6% (350 - 380 nm)

IR Attenuation

 > 97%       (800 - 830 nm)

> 98%      (840 - 890 nm)

> 99%    (900 - 2300 nm)

Wavelength

Tempest-IR

(No Gap)

Wavelength

Tempest-IR

(No Gap)

nm % Trans nm % Trans
380 0.00 650 49.54
385 0.00 660 45.95
390 0.00 670 42.11
395 7.87 680 38.04
400 19.91 690 34.14
410 39.59 700 30.35
420 49.64 710 26.63
430 55.51 720 23.24
440 58.07 730 20.18
450 60.35 740 17.49
460 62.22 750 15.01
470 62.69 760 12.91
480 63.74 770 10.99
490 64.48 780 9.41
500 65.41 790 8.08
510 66.38 800 6.88
520 66.82 810 5.89
530 66.91 820 5.13
540 67.11 830 4.37
550 66.79 840 3.83
560 66.29 850 3.28
570 65.50 860 2.78
580 64.78 870 2.37
590 63.42 880 2.06
600 62.25 890 1.83
610 60.55 900 1.58
620 58.34 910 1.41
630 55.85 920 1.24
640 52.75 930 1.10

Infrared Transmittance (No Air Gap) Sheet Glass

Wavelength

Tempest-IR

 (1/2" Gap)

Wavelength

Tempest-IR

 (1/2" Gap)

(nm) %Trans (nm) %Trans
380 8.25 660 39.96
385 11.16 665 37.76
390 15.04 670 35.56
395 19.59 675 33.29
400 24.51 680 30.98
405 29.45 685 28.76
410 34.27 690 26.55
415 38.63 695 24.49
420 42.70 700 22.44
425 45.75 705 20.60
430 48.65 710 18.74
435 50.09 715 17.14
440 51.50 720 15.56
445 52.33 725 14.22
450 53.22 730 12.86
455 53.78 735 11.76
460 54.35 740 10.63
465 54.80 745 9.72
470 55.18 750 8.79
475 55.58 755 8.04
480 56.04 760 7.29
485 56.56 765 6.68
490 57.16 770 6.06
495 57.85 775 5.56
500 58.40 780 5.06
505 58.99 785 4.65
510 59.58 790 4.25
515 59.94 795 3.91
520 60.23 800 3.60
525 60.40 805 3.33
530 60.43 810 3.05
535 60.49 815 2.84
540 60.55 820 2.62
545 60.37 825 2.43
550 60.13 830 2.25
555 59.80 835 2.09
560 59.55 840 1.95
565 59.23 845 1.81
570 58.83 850 1.70
575 58.29 855 1.55
580 57.89 860 1.41
585 57.32 865 1.30
590 56.88 870 1.21
595 56.32 875 1.14
600 55.83 880 1.04
605 55.03 885 0.99
610 54.37 890 0.94
615 53.49 895 0.88
620 52.67 900 0.82
625 51.46 905 0.77
630 50.20 910 0.73
635 48.84 915 0.68
640 47.42 920 0.64
645 45.65 925 0.59
650 43.94 930 0.57
655 42.03    

 

Infrared Transmittance (1/2" Air Gap) Thermopane Glass

 

 

EMI / RFI Shielded Glass

Picture

Model

Features

DATASTOP

 

Architectural

 

CLEAR - No wire mesh

 

Conductive

RF Shielded Glass

 

10 Year Warranty

 

News Article

 

DATASTOP Brochure

  • Good electrical attenuation over a wide range of frequencies

  • Free of Metal Mesh

  • Near normal optical clarity and light transmission

  • High impact resistant safety glass

  • Very high thermal insulation

  • Available in large sizes (up to 2000mm x 3500mm) and a variety of colors

  • Laminated DATASTOP reduces UVA/UVB to zero

  • Easy edge connection methods

DataStop Performance

Applications

Glazing & Maintenance

Shielding

Pilkington DATASTOP glasses can be used in a wide variety of applications where protection from electronic interference is needed.

Typical installations include :

  • Fully screened buildings, individual floors in a building or individual rooms in a building

  • Electronic Instrument Panels

  • Hospital Operating Rooms

  • Embassy Glass

  • Recording Studios

  • Airport Control Towers

  • Shielded Cabinets

  • Monitor Screens

  • MRI View Windows

  • Does NOT Meet 100 dB Requirement

  • Office Partitions

  • Computer Rooms

  • House Windows

  • SCIF's

  • For internal rooms, cubicles or partitions the laminated (TL) versions are recommended while for external glazing, the sealed unit (TD) versions should be used.

    When offices are being refurbished for EMI control purposes, the window can be replaced or alternatively a single piece secondary sash can be installed using laminated or double glazed DATASTOP.

     

    For new office complexes incorporating computer facilities and terminals, the complete glass curtain wall can now be screened using DATASTOP glass. The advantage of discussing such screening methods at the design stage cannot be overstressed, since there is the option for screening the complete building envelope incorporating excellent solar control and thermal insulation as necessary.

     

        In order to maximize the screening effect of the whole building it is essential that the total periphery of the glass is electronically connected to the metal window frame which in turn should be connected to the screening material in the wall.

     

        After installation an initial "audit" is recommended to measure the attenuation of the total screening. This should be repeated periodically.

     

        DATASTOP glass carries a 10 year warranty and requires no maintenance beyond that required for any conventional glass.

     

        As with all double glazing units, "Datastop" units for external glazing should be installed in accordance with good practice, and following the recommendations in the leaflet "Insulight" double glazing units - Installation and Maintenance.

    Skylights

    RF Shielded Glass Walls

     

        The signal attenuation of DATASTOP Glass is achieved by the use of several layers of specially developed coatings which are effective in the electric field by reflection of the signal. The attenuation provided will depend on the characteristics of the signal, and the electrical connection at the glass edge.

     

        The unit of attenuation is a logarithmic one, the decibel (db). The graph in Figure #1, shows the relationship between decibels and the percentage attenuation (reduction) in the electric field.
     

    Figure #1
    Figure 1

        The attenuation performance was measured using a test sample of approximately 1m inserted in the wall of a 2.5m cube screened room for frequencies up to 1GHz (1000 MHz). For frequencies above 1GHz a 1 meter cube screened enclosure was used.

        This method is based on the specification in US Military Standard MIL-STD-285C and consists of measuring the transmission between two aerials 2 meters apart. The attenuation of the glass is measured by comparing the transmission through the glass when glazed in the screened room, with the signal strength in open field conditions. (See Figure #2)
     

    Figure #2
    Figure #2

     

    Glazing System

    Optical Properties

    D60& L60 Is No Longer Available

    Shielding Attenuation

     

         

     
       

     

     

     Last Updated: June 11, 2014

      Copyright 2001- 2014  R. A. Mayes Company, Inc.

    An Electro Mechanical Research and Development (EMRAD) Corporation, Company

     
         
     

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