Guide d’Installation sonde E4000
E4000 probe Installation Guide
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Symptoms above 3000μg / m
3
usually include drowsiness, eye and respiratory irritation, general
malaise, headache, nausea and exacerbation of respiratory symptoms. Some data suggest that elevated
levels of COVt amplify the harmful effects of specific harmful VOCs (cocktail effect).
COVT
Formaldehyde
Benzene
4-PCH*
HQE (French)
300 μg/m
3
10 μg/m
3
2 μg/m
3
NA
DGNB (German)
<500 μg/m
3
: 50 marks
<1000 μg/m
3
: 25 marks
<3000 μg/m
3
: 10 marks
<60 μg/m
3
: 50
marks
<120 μg/m
3
: 10
marks
NA
NA
BREEAM (UK)
300 μg/m
3
100 μg/m
3
NA
NA
LEED (USA)
500 μg/m
3
33 μg/m
3
NA
6.5 μg/m
3
* 4-phenylcyclohexene
A ventilation threshold set between 0.3 and 0.5 mg / m3 therefore seems recommended for TVOC (300
μg / m
3
and 500 μg / m
3
) for certified sustainable buildings.
Thresholds for specific VOCs and known carcinogens such as formaldehyde and benzene are well
below that of the TVOC and would require selective detection. Unfortunately, the current technology
does not yet make it possible to specifically measure these carcinogenic VOCs. However, the TVOC
load includes some of these carcinogenic VOCs and a low TVOC threshold contributes to reduce these
as well.
11. Type of VOC measure settings
The measurement of VOC for ventilation control requires an auto-zero based on the healthiest air seen
in the context of ventilation or aeration. Indeed, the outdoor air is never ideal and it would be futile to
want to reach a level of VOC lower than that of the fresh air, at the risk of over ventilating
unnecessarily. The absolute measurement of VOC uses the zero factory. This zero is obtained after
hours of fresh air cleaning. In this configuration, there is no auto zero. Factory zero drift cannot be fully
guaranteed for years and will depend mainly on possible sensor contaminations.
By default, the VOC measurement is in relative measurement mode. It is possible to choose between
absolute VOC measurement and relative VOC measurement as follows:
R S
4
8
5
E N O C E A N
> S E
T T I
N G
E X I
T
In the main menu, select "
SETTING
" and press OK (Middle button). The screen displays the following
choices:
S T
E
P
S
T E M P
H U M
> V O C
R E P
E A T
R E T
U R N
Then select "
VOC
" and press OK (Middle button).
The display shows the current mode:
