• maintenance-free CO2 sensing element (depending on type) based on optical infrared absorption measurement (NDIR1))
• or with VOC2) sensing element based on a heated tin dioxide semiconductor
• CO2 temperature (active or passive) and CO2 humidity-temperature multisensor
• No recalibrations required
• Operating voltage AC 24 V or DC 15…35 V
• Signal outputs DC 0...10 V or DC 0...5 V adjustable
• Selectable passive temperature sensing element
1) NDIR = Non dispersive infrared 2) VOC = volatile organic compounds (also called mixed gas)
In ventilation and air conditioning plants to enhance room comfort and optimize energy consumption by providing demand-controlled ventilation. The sensor acquires:
• CO2 concentrations as an indication of occupancy in rooms where smoking is prohibited.
• VOC concentrations as an indication of odors such as tobacco smoke, body odor, or material fumes in the room.
• Relative humidity in the room.
• Room temperature. Sensors QPA10… and QPA20… can be used as a:
• Control sensor.
• Transmitter for building automation and control systems and / or display units (QPA20…D only). Typical use:
• Acquisition of CO2 and VOC concentrations: In party rooms, lounges, fair pavilions and exhibition halls, restaurants, canteens, shopping malls, athletic centers, sales rooms, and conference rooms.
• Acquisition of CO2 concentrations: In rooms with varying occupancy levels where smoking is prohibited, e.g. museums, theaters, movie theaters, auditoriums, office spaces, and school rooms.
|QPA1000||Room VOC Sensor, 0…5V, 0…10V, 0…100%VOC (S55720-S119)|
|QPA1004||Room CO2 Sensor - Basic, 0…10V, 0…2000ppm; Accuracy ≤± 60 ppm + 4 % of measured value (S55720-S453)|
|QPA2000||Room CO2 Sensor, 0…10V, 0…2000ppm|
|QPA2002||Room CO2 + VOC Sensor, 0…10V, 0…2000ppm|
|QPA2002D||Room CO2 + VOC Sensor, 0…10V, 0…2000ppm, LCD Display|
|QPA2060||Room CO2/Temperature Sensor, 0…10V, 0…2000ppm|
|QPA2060D||Room CO2/Temperature Sensor, 0…10V, 0…2000ppm, LCD Display|
|QPA2062||Room CO2/Humdity/Temperature Sensor, 0…10V, 0…2000ppm|
|QPA2062D||Room CO2/Humdity/Temperature Sensor, 0…10V, 0…2000ppm, LCD Display|
|QPA84||Room VOC Controller, ON/OFF|
|QPA1064||Room CO2/Temperature Sensor - Basic, 0...10V, 0...2000ppm; Accuracy <+ 60 ppm + 4% of measured value (S55720-S454)|
|QPA2080||Room CO2/Temperature Sensor, 0...2000ppm, Temperature LG-Ni1000 (S55720-S121)|