Gigahertz Solutions ME 3030B Mode D'emploi page 9

An EMR survey of sleeping areas should be conducted under
"sleep conditions," with all electrical equipment turned on or off
as you have it at night. Under certain circumstances the electric
field strength might even be higher if these items are switched off!
Some guidelines recommend the so-called "potential-free" meas-
urement of electric fields, i.e. without needing to ground the me-
ter. A potential-free measurement is, in principle, very adequate
for the measurement of the total pollution. However, in order to
obtain valid results, this method requires a great deal of know
how, the use of a non-conductive holder (e.g. the PM2 by Giga-
which is the identification of the sources of pollution, would be an
earthed measurement, though, which is why this procedure is
especially recommended for the private use. For more back-
ground information to potential-free measurements please see our
website.
Recommended Exposure Limit AC Electric Field:
Below 10 V/m, preferably below 1 V/m
(at 50/60 Hz for grounded measurement)
For potential-free measurement: below 1.5 pref. 0.3 V/m
Measurement Instructions –
Magnetic Field:
Turn on the field meter and set the switch "Field Type" to "M" for
AC magnetic field. (ME 3840B only: Turn the knob for the fre-
quency filter to "50/60 Hz"). The field meter does not need to be
grounded, persons present do not affect the testing results and
there is no need to hold the meter close to your body. Proceed as
follows:
- Move slowly through the room to be measured with special re-
gard to the sleeping or working place.
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Resulting total field strength = square root (x² + y² + z²). Simplified calculation is
possible by finding out the position / direction of highest reading as described in
the next chapter for the magnetic field. The above formula is also valid for the
calculation of the "3D" magnetic field.
© Gigahertz Solutions GmbH
Made in Germany
hertz Solutions), three
measurements in the
three dimensional axes
XYZ (see figure on the
left) and the vectorial
2
addition of their results.
Far more adequate for
the most important task,
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