Technology Used
Air purifiers use two primary technologies to clean particles from the air: paper filter and ionic air cleaning technology. Ionic air cleaning technology is where dust particles are electrically charged and stick to the metal filter. Paper filters are generally thought to work better, but they rely on being replaced. Some products are considered “Smart” with IoT and app capability.
Sensors Used
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Dust Sensors: Measure fine particulates in the air, typically called PM2.5 and PM10 (where PM refers to the particle size). Manufacturers use dust sensors to show the effectiveness of their purification product. Dust sensors can also be used to automatically turn the air purifier on and off. The sensors have a built-in fan to move air across the optical path.
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CO2 and VOC Sensors: Often built into higher-end products to provide further air quality information. When outdoor air pollution is high, residents shut all windows and vents. This causes CO2 and VOCs to increase, resulting in poor indoor air quality. A warning can be shown to advise the occupant(s) of the need to introduce fresh air.
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Relative Humidity & Temperature Sensors: Excessively dry air can lead to respiratory and sinus issues, and excessively wet air can cause condensation and potential health-damaging mold.
Sales Strategy and Market
The smart air purifier market is expected to register a CAGR of almost 14% by 2023 (Source: Dublin, March 28, 2019, GLOBE NEWSWIRE – "Global Smart Air Purifier Market 2019-2023").
Exposure to air-contaminating particles, such as dust, dander, and bacteria, may cause respiratory problems. Indoor burning of solid fuels has been identified as one of the reasons for pollution-related diseases. The major reason behind this is the burning of fossil fuels such as coal, wood, charcoal, dung, and crop wastes for cooking, heating, and lighting. The significant increase in the level of air pollution across the globe increases the demand for air purifiers.
Smart air purifiers have proven to be one of the most efficient devices to control air pollution in residential and commercial spaces. They automatically analyze air quality and operate with the required intensity to clean the impure air. To prevent the occurrence of diseases, air purifiers are being installed in homes and offices, which in turn is driving the sales of smart air purifiers.
To learn more about applicable Telaire products, click on the links below:
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Dust Sensor: Telaire SM-UART-04L
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CO2: Telaire T6713VOC: Telaire MiCS-VZ-89TE
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VOC: Telaire MiCS-VZ-89TE
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RH/T: Telaire ChipCap 2
Product Differentiators - Residential Air Purifiers and Fresh Air Machines
Carbon Dioxide (CO2) Sensor
The Telaire T6703 is specifically designed for high-volume OEMs. The T6703 Series is available in two ranges: 0-2000 ppm and 0-5000 ppm (-5K). The simple interface with 5V input and I2C output allows for quick and simple integration. The T6703 is the smallest Non-Dispersive Infrared (NDIR) CO2 sensor of this type on the market. NDIR sensors outperform electrochemical sensors in accuracy, repeatability, and longevity.
The T6703 features patented ABC Logic™, and Telaire warranties the calibration for life.
Telaire is the largest manufacturer of NDIR CO2 sensors in the world, with the capacity to expand production quickly and easily at its Tijuana, Mexico facility. Telaire invites OEMs to visit its manufacturing facility to witness its unrivaled quality and production systems.
Particulate Dust Sensor
The Telaire SM-UART-04L is a PM2.5 laser-based sensor that detects dust particle concentration in the air using an optical sensing method. A laser light-emitting diode (LED) and a photosensor are arranged to detect the reflected laser light from dust particles in the air. The sensor can detect small particles, including large house dust, by the pulse pattern of the signal output.
Telaire’s dust laboratories, located in Shanghai and Changzhou, China, have developed proprietary calibration techniques for consistent accuracy and repeatability.
The SM-UART-04L has a small package with a built-in fan for simple and easy integration for OEMs.
Humidity & Temperature Sensor
The Telaire ChipCap® 2 offers an advanced and cost-effective humidity and temperature sensing solution for a wide range of applications. It integrates a capacitive polymer sensor chip and CMOS integrated circuit with EEPROM into one reflow-solderable SMD package.
ChipCap 2 is individually calibrated and tested, performing at ±2% from 20% to 80% RH (±3% over the entire humidity range). It is simple to use without further calibration or temperature compensation.
ChipCap 2 provides linear output signals with various interface options, including:
- Digital I²C interface
- Pulse Density Modulated (PDM) signal convertible to analog
- Alarm function for preset control at minimum/maximum humidity
It is also available as a Single In-line Package (SIP) module for fast field replacement and quicker response.
VOC Sensor
The Telaire MiCS-VZ-89TE Integrated Sensor Module combines advanced MOS sensor technology with intelligent detection algorithms to monitor VOC variations in confined spaces, such as meeting rooms and vehicle cabins. The dual signal output controls ventilation on-demand, saving energy and reducing costs.
Key features:
- Calibration-free
- Low power consumption
- Wide VOC detection range
- High sensitivity
- High resistance to shocks and vibrations
