CO2 instruments for Demand Control Ventilation (DCV) .
GE Sensing introduces a new product line CO2 sensors,
transmitters and handhelds for Demand Controlled Ventilation
(DCV) in buildings and related applications. CO2 sensors
are recognized as an important indicator for the Indoor Air
Quality (IAQ) in buildings. The product line has become
available after the recent acquisition of Telaire, world's
technology leader in CO2 sensing solutions.
The technology is based on sensor absorption of light in a gold-plated
reflective light pipe or waveguide diffusion gas chamber surrounded
by a gas permeable Teflon diffusion filter that prevents particulate
and water contamination of the sensor. Light will be absorbed in
ratio to the CO2 concentration. Remaining light is being measured
and converted to an analogue signal.
The Telaire technology incorporates the ABC Logic™ - software for
self-correction of drift to better than ±20 ppm per year. The system is
virtually free of maintenance and has typically a lifetime of more than
10 years.
Application for CO2 sensors and instruments includes Air Quality
monitoring in buildings or spot measurements by heath inspectors.
The measurements are also used to control the ventilation in buildings
based on the exhaust of CO2 by their occupants and as such enables
control of ventilation based on the number of occupants in rooms. The
DCV is one of the main solutions to reduce the energy consumption in
air conditioning to meet the EPBD (Energy Performance of Building
Directive).
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GE Druck Ltd.
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June 2006
