Trotec 3510205090, Руководство по эксплуатации

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3 EN HCHO/TVOC measuring device BQ16
TVOC – Total Volatile Organic Compounds
Nowadays, interior spaces contain numerous possible sources
of volatile organic compounds, so-called VOCs. Such sources
include sealants, furniture, varnishes and solvents, insulation
material etc.
Every individual volatile organic compound can be associated
with specific as well as unspecific health problems. Therefore,
there is a maximum limit for the ambient concentration of each
of these substances in interior spaces.
Due to the different chemical compositions and the associated
different impact potential of each of these substances, an
assessment of the overall group of substances is a rather
complex issue. However, this is exactly what is tried to be done
by way of calculating the sum of the concentrations of these
individual compounds, i.e. by determining one collective value,
the so-called TVOC value (Total Volatile Organic Compounds).
Owing to the complexity of VOCs, both the individual health
effects on the human body and their intensity can be different
and vary greatly in certain cases. Therefore, the TVOC
concentration and its effects are purely indicative.
Even below the thresholds of an acute individual effect, TVOCs
can affect the human well-being and health through so-called
combination effects. A long-term exposure to even low TVOC
concentrations, particularly to mixtures, can lead to unspecific
symptoms and reactions including
• perception of unpleasant odours and tastes
• runny nose and watery eyes
• irritation of eyes, nose, throat
• dry mucous membranes and dry skin, itching
• increased sensitivity to infections of the respiratory tract as
well as
• neurotoxic symptoms (fatigue, headaches, reduced mental
performance)
and even result in permanent health damage.
TVOC
concentration
(mg/m
3
)
Effect
< 0.20 No irritation or impairment of well-being
0.20 to 3.0 Irritation or impairment of well-being
possible in case of interaction with other
exposure parameters
3.0 to 25 Exposure results in an effect; headaches
possible in case of interaction with other
exposure parameters
> 25 Headaches; other neurotoxic effects apart
from headaches possible
(Source: German Federal Environmental Agency, Federal Health
Bulletin, B. Seifert, Guideline values for indoor air,
Springer 1999)
Device depiction
1
2
3
4
No. Designation
1 Sensor
2 Battery compartment with cover
3 Operating elements
4 Display
Operating elements
5
6
7
8
No. Designation
5 Lamp / HOLD button
6 SET button
7 MAX / MIN button
8 Power button