Air quality monitoring in mission critical facilities serves two constituencies at once: the equipment and the people running it.

For the Facility

• Ventilation verification: CO₂ is the standard proxy for fresh air exchange. A climbing CO₂ trend in an occupied ops room means the ventilation is not keeping up.
• Chemical events made visible: a rising VOC index flags cleaning solvents, paints and adhesives from works in progress, and off-gassing from newly installed equipment — before anyone smells it.
• Energy: measured CO₂ is what makes demand-controlled ventilation possible — ventilate for the actual occupancy instead of the worst case, without gambling on air quality.

For the People

• NOCs and control rooms are occupied around the clock; elevated CO₂ and TVOC levels are associated with headaches, irritation and reduced concentration — not what you want on the night shift that handles incidents.
• Continuous IAQ readings provide documented evidence for workplace air quality requirements in continuously staffed technical spaces.

The sensor measures carbon dioxide with photoacoustic NDIR sensing: it detects the actual CO₂ molecules optically rather than inferring them from a chemical proxy, which is what gives it high accuracy and long-term stability.

• Output range of 0 to 40,000 ppm.
• Measurement accuracy of ±40 ppm with ±10 ppm repeatability — fine enough to trend ventilation performance, not just alarm on it.

The wide 40,000 ppm range means the sensor keeps reading accurately far beyond occupancy levels — relevant where CO₂ based fire suppression or process gases are present.

High levels of volatile organic compounds inside buildings can result in eye, skin and throat irritation, nausea, headaches and lowered activity. The harmfulness depends on the specific compound and its toxic properties — when TVOC issues appear, an inspection should find and address the root cause, as continued exposure may harm health.

Reading the VOC Index

The sensor reports VOC as an index from 0 to 500 relative to the air the sensor has learned as its baseline — a rising index means the air is deteriorating versus normal conditions for that room. This makes it a sensitive change detector:

• A stable index is your room's normal.
• A sustained climb is an event: something new is off-gassing, ventilation dropped, or a chemical was introduced.
• Set alerts on sustained elevation rather than short spikes (a passing cleaning cart will spike briefly).

One RJ45 cable to the base unit delivers a complete environmental measurement point:

Each metric gets its own thresholds and alerting on the base unit, and each is published individually to your BMS (Modbus TCP, BACnet IP, Modbus RTU), NMS or DCIM (SNMP) and IIoT platform (MQTT).

Occupied Spaces (NOCs & Control Rooms)

• Mount at breathing zone height — roughly 1.1 to 1.7m (3.5 to 5.5ft) above the floor, where the readings represent the air people actually inhale.
• Keep it away from doors, operable windows and supply diffusers, which flush the sensor with unrepresentative air.
• Avoid spots where someone sits and breathes directly onto the sensor — an adjacent workstation can add hundreds of ppm locally.

Equipment Rooms

• Place the sensor in the return air path rather than in front of a CRAC discharge, so it samples mixed room air.
• The industrial steel enclosure mounts 0U in the rack, on DIN rail, magnetically or on the wall — no drilling required on steel surfaces.