- Room and duct versions
- Low cost air quality measurement
- To determine the air quality, based on a mixed gas sensor (VOC sensor)
- VOC = Volatile Organic Compounds
- Cigarette smoke
- Body odour
- Exhaled breathing air
- Carbon dioxide (CO2)
- Solvent vapours
- Emissions from building members and detergents
- Automobile exhaust gases
- Vapours of alkanoles
- Combustion smoke (from wood, paper, plastics)
- and many other gases
Room Air Quality (VOC) Transmitters
QRM-series
The indoor air quality detector is a simple, low-cost and low-maintenance VOC transmitter based on modern bio-semi-conductor technology.
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Room Air Quality (VOC) Transmitters
QRT-series
The self-calibrating microprocessor-controlled room air quality transmitter QRT used to determine the room air quality on basis of a mixed gas sensor / VOC sensor (VOC = Volatile Organic Compounds).
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Duct Air Quality (VOC) Transmitters
QDT-series
The self-calibrating microprocessor-controlled room duct air quality transmitter QDT used to determine the room air quality on basis of a mixed gas sensor / VOC sensor
(VOC = Volatile Organic Compounds).



