aSENSE®-K Duct mounting - SenseAir AB - #1

Model aSENSE-K

Carbon dioxide & Temperature Transmitter for duct mounting

aSENSE-K is an all-digital low-cost transmitter for installation in ventilation ducts. aSENSE-K measures temperature and CO₂ concentration in the ambient air and transforms the data into digital output signals and sends these values to a comprehensive system. The aSENSE-K \s a key component for climate control of buildings and different processes.

APPLICATIONS

According to European building regulations, the fresh air flow should, in rooms where people stay more than occasionally, be at least 7 l/s and person. If the room occupants are adults with a light work-load and the outdoor CO₂ concentration is 350 ppm, this airflow answers directly to an indoor CO₂ concentration of 1 040 ppm. According to the National boards of occupational safety and health, the CO₂ concentration can therefore be used as an indicator of the Indoor Air Quality (IAQ). A CO₂ concentration below 1 000 ppm should then always be the aim.

One of many different applications for aSENSE is to regulate the ventilation by controlling a fan, damper etc. based on the detected CO₂ concentration in the duct. The sensor is designed to suit several different ventilation strategies, e.g. climate regulation based on CO2 / temperatur / timer / occupancy and/or manual control.

• uses state-of-the-art Non-Dispersive InfraRed (NDIR) technology to measure the carbon dioxide (CO₂) concentration

• cost-optimised for connection to DDC:s

• contributes to lower energy costs when it is applied in a Demand Control Ventila­tion (DCV) strategy

• is available in 6 different carbon dioxide measurement ranges

• has internal automatic self diagnostics. Maintenance interval > 5 years

• has serial communication port for con­nection to a PC or a GSM module

• has cost-efficient RS485 network communication as an option

serial communikation port o 8 UART

24 V AC/DC system ground linear output (+) C linear output (+) t< signal ground (-)

2

jumper for the output's configuration of 0% or 20% starting point

jumpers for selecting voltage or current outputs

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