NARDA 2250 SERIES, Operating Manual

Page: 13 / 64

11
Sa
fety

Never place or hold field strength
measuring equipment inside field
generating equipment or machines (e.g.
microwave ovens or induction furnaces) as
this may result in destruction of the field
strength measuring equipment which is
not designed to withstand field strengths
intended for materials processing.

Be advised that field strength increases
rapidly in the near-field region (the field
strength will be eight times higher if you
halve the distance to the source).
Enormous field strengths can occur in the
immediate vicinity of radiation sources
(e.g. leaks in waveguides, induction
furnaces).

All field strength measuring equipment
has a limited and specified frequency
range. Fields with spectral components
outside this frequency range will normally
not be evaluated correctly and may be
underestimated. Before using field
strength measuring equipment, make sure
that all the field components to be
measured are within the specified
frequency range of the measuring
equipment.

Be advised that secondary radiators
(reflecting objects, such as a metal fence)
may result in local amplification of field
strength.
Warning instructions