Construction-Biological Limits - Aaronia NF-5030S Manual

Table of Contents

14.0 Exposure limits

14.3 "Construction-biological limits" & "Precautionary limits"

The countless "construction-biological limits" are vastly different from the offici-

al limits for personal safety - they are mostly significantly lower. To one's great

surprise, however, they often do not have any "frequency component" (in con-

trast to the highly complex official ICNIRP limits, which are also legally binding

in Germany). In other words, they are completely identical, for instance, at

16.7Hz (traction power) as well as 50Hz (mains).

Hence, technicians in professional measurement technology are astounded at

this rather "strange" way to evaluate exposure limits, predominantly used by

construction biologists. However, there is a simple explanation for this relatively

simple way of evaluating exposure limits:

The "measurement equipment" used in this sector is predominantly based on the

so-called "broadband/diode detector" technology. However, it is physically

impossible to conduct frequency-selective measurements with these devices.

Hence, frequency-selective construction-biological limits would simply not be

manageable. In any case, this might change very soon thanks to SPECTRAN,

as frequency should really not be swept under the carpet.

Even if supporting such trivial "precautionary limits" in a real measurement devi-

ce, such as SPECTRAN, does bother us intensely, we decided to support at

least the ECOLOG-institute and BUND "precautionary limits".

The following limits can all be called up in "Exposure limits" mode by using

the right/left cursor keys - they will be displayed instantly:

ECOLOG = ECOLOG institute precautionary limit*

0,1µT or 20V/m

BUND = BUND precautionary limit for relaxation areas 0,01µT or 0,5V/m

Please note that these values could change at any time. Thus, please consult

the respective entities when in doubt.

*Only applicable to 50Hz

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Spectran nf