Carbon Dioxide CO2 Gas Sensor - HVAC Control

Air Control PRO Signal

CO2 presence detector provide the capability of controlling heating, ventilation, air-conditioning in relation to whether or not persons are present. This makes a lot of sense from an energy point of view as it can save large quantities of it: If nobody's there, why keep the heating on all the time.

Ventilation systems require energy and the air that's exchanged needs either heating or cooling. But the mere presence of persons is not enough for air to be exchanged through a ventilation system or automatically controlled window. What's important is the quality of air. People inhale O2 and exhale CO2. This is a situation everyone's familiar with: as the meeting wears on, concentration lapses and, at some point everybody's tired, and later on people start to get a headache. The reason for this is the content of CO2 in room air. Unfortunately, this is something people only notice when it's far too late to remedy the situation and actively provide ventilation. This is where our Air Control sensor comes in - because it measures the amount of CO2 that's present in room air.

# Air-quality sensor matching presence detector
# High energy-saving potential from on-demand ventilation
# Automatic, maintenance-free CO2 measurement
# Controls air-conditioning (ventilation, window opening, co-ordinated heating control etc.)
# Provides information on air quality and the need for fresh air (visually and acoustically)
# Also suitable for retrofi tting in training, conference, classrooms, offices and the home
# Acoustic warning every 5 min. above 1500 ppm (can be deactivated)
# Self-calibrating (to fresh air and air pressure/altitude)
# Indicator with 3 LED's
(green, amber, red) Green: < 1000 ppm
(light 'ON' permanently, can be switched 'OFF') Orange:1000 ppm – 1500 ppm
(light 'ON' permanently) Red: > 1500 ppm (flashing)

Mounting	Ceiling Mount
CO2 measurement range	400 – 2000 ppm
CO2 Accuracy	5% of measurement reading ± 150ppm (at 25°C and 1013 hPa)
Signal Output	HVA equipment connected by means of floating base-isolated output; 230 W max.
Temperature dependence of CO2	< 5 ppm per °C
Temperature (storage)	- 40°C to + 70°C
Relay (function)	Relay ON from 1200ppm Relay OFF from 800ppm (with falling CO2 concentration)
Response time (T90)	5 min
Supply	230V AC, electrically isolated power supply unit
IP Rating	IP 20 (shock hazard protection for indoors)