INTRODUCTION AREXX PRO-CO2 Sensor
The PRO-CO2 Sensor is a CO2 and temperature sensor designed to
be used in combination with our AREXX MULTILOGGER-System for
permanent monitoring of the CO2–level and temperature. Special fea-
tures for this sensor system are the wireless data-link and the frequent
CO2 data which can be logged on your PC. The CO2 sensor's quality
is highly professional with a GE selfcalibrating CO2 module providing
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highly accurate ppm-levels (in which the shortcut "ppm" refers to "Parts
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Per Million").
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Our PRO-CO2 sensor provides each 45 seconds highly accurate CO2
and temperature data which results in an excellent trend-reporting for
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CO2- and temperature levels.
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Outdoor CO2-levels
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In Europe, outdoor air will normally provide CO2-levels between 400
and 470 ppm. Of course these values depend on environmental con-
ditions. Measurements may result in different levels between locations
in villages, in cities or in forests. CO2-levels will reach higher values in
industrial areas (e.g. near highways) than in nature environments. As a
result, outdoor CO2-levels may fluctuate depending on environmental
conditions.
Indoor CO2-levels
Optimal values for indoor CO2-levels will not exceed 800 ppm. In smog
areas with high outdoor CO2-levels, this optimal value however is hard
to approach. Normally with professional and very accurate CO2 level
measurement we prefer an optimum by aiming at an indoor CO2-level of
1000 ppm.
As a result, standards for CO2-levels in public buildings (e.g. in schools)
should refer to some absolute CO2-levels. As soon as the CO2 level
indoors exceeds a value of 1000 ppm, it is advised to ventilate the room
(e.g. by opening a window).
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