On 19 September 2002, VitaTech Engineering was
contracted by a commercial printing company to design, install, test
and certify a 1320 sq. ft.
AC ELF EMF dual-substrate magnetic shield. Low (0.1-9.99 mG), elevated
(10-99 mG), and high (100-135 mG) 60 Hz AC ELF magnetic emissions
emanated into the pre-press and server rooms from the transformers
and distribution
panels located on the opposite side of the shared wall. Emissions
emanated from behind the shared wall into these rooms causing "screen jitter".
Project Data
Before Shield Site Survey
Image
1
Image
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Plot of Site Before AC ELF Magnetic Shield Installed
After
Shield Site Survey
197KB File Size
3-D Contour Plot of Site After AC ELF Magnetic Shield Installed
Slideshow
Magnetic Shield Images
After Shield
The dual-substrate shield was installed on the shared walls with electical
outlets and data port receptacles maintained in original locations. The
installed shield complied with and exceeded the performance guarantee of
10mG.
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