Taking control of the air you breathe
Real-time IAQ monitoring for industrial and commercial applications
What is Indoor Air Quality (IAQ)?
Indoor air quality (IAQ) describes the characteristics of breathable air which affects human well-being, comfort or productivity. Poor IAQ causes a gamut of short and long term health issues from headaches and drowsiness at the milder end to throat infections and respiratory illnesses at the other. Major factors that contribute to poor air quality include inadequate ventilation, poorly maintained HVAC systems, vehicle emissions, solvents, and cleaning products.
What are VOCs?
VOC stands for Volatile Organic Compound. This term describes organic chemicals that easily become vapours or gases at ordinary room temperature. It is the tendency of these compounds to rapidly evaporate or sublimate into the surrounding air that gives VOCs their “volatile” status. While harmful VOCs are typically not acutely toxic they have compounding long-term effects on human health.
What is the acceptable level of VOCs in indoor air?
Threshold Limit Value (TLV) is the supposed limit a person can be exposed to a certain VOC without experiencing adverse effects. TLV is measured in ppm (parts per million) for gases or mg/m³ (milligrams per cubic meter) for subatomic particles, such as smoke.
Low TVOC (Total Volatile Organic Compound) concentration levels is considered to be less than 0.3mg/m3. Acceptable levels of TVOC ranges from 0.3 to 0.5mg/m3 of concentration. From 0.5mg/m3 upwards TVOC concentration levels is considered to be considerable or high. According to the Australian Building Code Board’s IAQ handbook the maximum contaminant limits for TVOC specified in the IAQ Verification Methods is 500 μg/m3 averaged over one hour4. Internationally recognized RESET Indoor Air Quality quality standard determining IAQ specifies safe indoor environmental limits for TVOC.
Simplifying your path to IAQ monitoring
Your complete end-to-end monitoring system
The kit contains: the IAQ-VTH sensor with cable(s), quick connector(s) and device cable(s). The Nimbus IoT/Zen IoT Cloud Edge Interface hardware is sold separately. As well as the hardware in the box, the kit includes access to Define Cloud Services (DCS) where you visualize real-time data, plot monitored levels over time and run reports. Most importantly DCS is where you set up alarm notifications to alert key staff members if readings approach unsafe levels. Additionally you can configure hardware to execute control actions in response. e.g. activating or deactivating lights, pumps, fans, sirens, or other machinery. Whether you need to monitor IAQ at single or multiple locations, Define Instruments has a kit suited to your application.