User's Manual

Noggin Appendix B - Health & Safety Certification
B-1
Appendix B Health & Safety Certification
Radio frequency electromagnetic fields may pose a health hazard when the fields are intense.
Normal fields have been studied extensively over the past 30 years with no conclusive epidemiol-
ogy relating electromagnetic fields to health problems. Detailed discussions on the subject are
contained in the references and the web sites listed below.
The USA Federal Communication Commission (FCC) and Occupational Safety and Health
Administration (OSHA) both specify acceptable levels for electromagnetic fields. Similar power
levels are mandated by corresponding agencies in other countries. Maximum permissible expo-
sures and time duration specified by the FCC and OSHA vary with excitation frequency. The low-
est threshold plane wave equivalent power cited is 0.2 mW/cm
2
for general population over the
30 to 300 MHz frequency band. All other applications and frequencies have higher tolerances as
shown in graphically in Figure B-1.
Figure B-1: FCC limits for maximum permissible exposure (MPE) plane-wave equivalent power density mW/cm
2
.
All Sensors & Software Inc. pulseEKKO, Noggin and Conquest products are normally operated
at least 1 m from the user and as such are classified as “mobile” devices according to the FCC.
Typical power density levels at a distance of 1 m or greater from any Sensors & Software Inc.
product are less than 10
-3
mW/cm
2
which are 200 to 10,000 times lower than mandated limits.
As such, Sensors & Software Inc. products pose no health and safety risk when operated in the
normal manner of intended use.