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Reference values are determined by applying mathematical modelling and extrapolations of the following basic data.
This allows the given scenario to be estimated and enables a practical evaluation in relation to the limit values specified
in the standards.
9.2
Occupational and general Exposure according to EN 50364
The product standard EN 50364 defines the procedures and limits for the exposure of persons to all electromagnetic
fields from equipment operating in the frequency range from 0 Hz to 300 GHz and used in electronic article surveillance
(EAS), radio frequency identification (RFID) and similar applications.
A distinction is made between occupational exposure, of persons working in the vicinity of such equipment and having
an influence on the operation of the equipment.
In contrast, there are persons who work in the vicinity of such systems and have no influence on the operation of the
system. This group of people is described in the relevant standards as the "general population".
Pregnant women and wearers of active implants, e.g. hearing aids or pacemakers, also fall into the group of this general
population.
The following table gives the limit values for the respective group:
Occupational exposure
(European Directive2013/35/EU, EMFV)
Exposure for general population
(Recommendation of European Council 1999/519/EC)
Fundamental limits
Reference values
Fundamental limits
Reference values
∅ SAR-
Value of
the whole
body
Local.
SAR-
Value
(limb and
body)
Local.
SAR-
Value
(limb)
E- Field
strength
B mag-
netic flux
density
∅ SAR-
Value of
the whole
body
Local.
SAR-
Value
(limb and
body)
Local.
SAR-
Value
(limb)
E- Field
strength
H mag-
netic flux
density
(W/kg)
(W/kg)
(W/kg)
(dBV/m)
(dBuT)
(W/kg)
(W/kg)
(W/kg)
(dBV/m)
(dBA/m)
0,4
10*
20*
39**
-10,75**
0,08
2*
4*
32,15**
-19,25**
* Localised SAR averaged over 10 g tissue, all SAR values should be averaged over 6 min. ** rms Value
SAR =
σE
2
ρ
E – Electric field strength in the body
σ – Electrical conductivity of the body
ρ – Density of the body
