What is Air Quality Sensors (VOCs) ?

Introduction to Air Quality Sensors (VOCs)

What is it?

Air quality sensors (VOCs) are devices that measure the concentration levels of volatile organic compounds (VOCs) in the air inside a building. They detect and monitor the levels of VOCs, which can be an indicator of poor indoor air quality due to off-gassing from building materials, cleaning chemicals, and other sources.

Why we use it?

We use air quality sensors (VOCs) to maintain good indoor air quality, improve occupant health and safety, and comply with building codes and standards.

How it works?

The sensor typically contains a sensing element that interacts with the VOCs in the air, causing a change in electrical resistance or capacitance. The device then calculates the concentration of VOCs based on the magnitude of the change.

Major brands that manufacture it

Some of the major brands that manufacture air quality sensors (VOCs) include Honeywell, Johnson Controls, Siemens, Schneider Electric, and Trane.


There are different types of air quality sensors (VOCs), including metal oxide semiconductor (MOS), electrochemical, and photoionization detectors. The selection of the appropriate sensor type depends on the specific application, measurement range, accuracy requirements, and other factors.

How do we select it?

When selecting an air quality sensor (VOCs), consider factors such as accuracy, response time, measurement range, sensitivity to different VOCs, power consumption, and communication protocols. Also, make sure the sensor is compatible with your existing HVAC and building automation systems.

How to install it?

Air quality sensors (VOCs) should be installed in areas where occupants spend most of their time, such as conference rooms or classrooms. They should be mounted on a wall or ceiling at a height of approximately 4-6 feet, away from any obstructions that could interfere with airflow.

Wire connections required to receive the signals

The wire connections required to receive the signals from an air quality sensor (VOCs) may vary depending on the specific device and building automation system. Typically, they will require a power supply connection and a communication signal wire that connects to the building automation system or controller. It's important to refer to the manufacturer's installation instructions for proper wiring connections.

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What is Air Quality Sensors (VOCs) ?
Administrator December 22, 2023
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