ETS-Lindgren HI-3510 RF Radiation Badge Broadband Electromagnetic Radiation Detector (Archived) - Manual (Page 6)

HI n 3510 Manual Page — 1
WARNING:
Harmful effects may result from exposure to
electromagnetic (EM) radiation in the frequency range
from 300 kHz to 100 Ghz.
Among the more widely accepted safety standards are
those established by the American National Standards
Institute ("ANSI"), C95.1-1991, and the National
Radiological Protection Board (“NRPB”), NRPB-G11, of
the United Kingdom. Each of the two standards
establishes different safety limits for the general public
and industrial environments. Of particular significance is
the 10 to 300 MHz frequency range, where the limits are
most stringent, especially for the general public, and are
set to an equivalent power density of 0.2 mW/cm 2 . At
higher frequencies, the limits are as high as 1 mW/cm 2 ,
whereas at frequencies below 3 MHz, the limits are set to
100 mW/cm 2 .
Note that the aforementioned safety standards cannot be
measured by the Model H600A, which is a warning, and
not a measuring device. Suitable measuring devices exist
in the marketplace. Please contact the factory for
additional information on this subject.
The three common units of measurement for
characterizing electromagnetic energy are power density
in mW/cm2, electric field ("E-field") in V/m and magnetic
field ("Hfield") in A/m. At sufficiently large distances
from the source of radiation, the E-field and H-field
components have a fixed mathematical relationship.
Thus, the measurement of any one of these units in free
space is sufficient to determine the radiation level and
derive the other two. At frequencies nominally above 1
Archived 4/2/10