Spotting a single hazardous leak is only part of the air quality challenge facing modern vehicles and buildings. A gas monitor has a different job: tracking multiple gases continuously, over time, so that ventilation, cabin comfort and regulatory compliance can be managed intelligently rather than on a fixed schedule. Metis Engineering’s Air Wise sensor was designed for exactly this role, giving engineers and facility operators real time visibility of the air they are responsible for.
What a modern gas monitor needs to measure
Air Wise measures carbon dioxide, nitrous oxides and volatile organic compounds alongside absolute pressure, air temperature, relative humidity, dew point temperature and impact shock. Bringing this range of parameters together in a single CAN based unit means a vehicle cabin or industrial HVAC system can be monitored and controlled from one consistent data source, rather than stitching together readings from several separate devices.
Intelligent monitoring, not constant transmission
Air Wise includes an intelligent monitoring mode in which the sensor continuously observes environmental conditions but does not transmit on the CAN bus until a predefined threshold is exceeded. Once that threshold is crossed, it switches automatically to full active mode and can trigger a 500mA low side drive output to initiate a system response, such as increasing ventilation or issuing an alert. This approach keeps CAN bus traffic manageable during normal operation while ensuring the gas monitor responds instantly when conditions change.
Getting the sensitivity balance right
A gas monitor that is too sensitive becomes a nuisance, generating alerts and ventilation changes in response to background VOC levels that are present in almost any real world environment. One that is not sensitive enough misses the early signals it was installed to catch. Striking that balance is a genuine engineering challenge, and it is one reason Air Wise combines VOC sensing with nitrous oxide detection and, as an optional extra, carbon dioxide monitoring, so that a single reading is never the only basis for a control decision.
Applications across transport and industrial HVAC
Air Wise is built for integration into passenger and commercial vehicles, off highway machinery, autonomous pods and compressed air systems. As regulatory pressure on air quality tightens across transport, construction, agriculture and industrial sectors, having accurate, continuous gas monitoring data allows operators to manage cabin comfort and demonstrate compliance with increasingly stringent environmental standards.
In a vehicle cabin, elevated CO2 has a direct and measurable effect on driver alertness and passenger comfort, which makes continuous monitoring more useful than periodic spot checks. In an industrial HVAC system, the same principle applies at a larger scale. Air Wise gives building and fleet operators the data to respond to actual conditions rather than a fixed ventilation schedule that either wastes energy running when it is not needed or falls short when demand spikes unexpectedly.
Data that supports more than one decision
Because Air Wise reports pressure, temperature, humidity and dew point alongside its gas readings, the same data stream that drives ventilation control can also support diagnostics elsewhere in a system, from spotting a failing seal through unexpected pressure changes to flagging early signs of moisture ingress. That breadth is part of what distinguishes a gas monitor built for continuous operational use from a single purpose leak alarm.
Built to automotive standards
The sensor has been tested to ISO 7637-2:2011, ISO 16750-2:2012 and ISO 16750-4:2010, and can optionally be specified with a triple axis accelerometer rated to plus or minus 24g for applications where shock data adds further value. Air Wise is compatible with the Metis Nano Development Kit, allowing rapid desktop evaluation before committing to a full installation, and is supplied with a configurable CAN bus speed, address and DBC file for straightforward integration.
This combination of automotive grade validation and flexible CAN integration means the same gas monitor can move from a desktop evaluation rig to a production vehicle or industrial installation without a redesign, which shortens the path from specification to deployment for engineering teams working to tight programme timescales.
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If your platform needs a gas monitor capable of tracking CO2, NOx, VOCs and more in real time, and feeding that data into an automated HVAC or cabin control strategy, Metis Engineering’s team can help you specify Air Wise for your application.
