How do the sensors in the air purifier performance test chamber detect particles, temperature and humidity in the air, and what is their working principle?-
How do the sensors in the air purifier performance test chamber detect particles, temperature and humidity in the air, and what is their working principle?
2023-08-16
As an experienced SEO professional, I am well-versed in setting up website page descriptions. Now, let's talk about how sensors in an air purifier performance test chamber detect particles, temperature, and humidity in the air, and their working principles.
1. Particle detection: Particle sensors in air purifiers use different principles to detect the concentration of particles in the air. One common method is through optical sensing, where particles in the air are captured on a surface and then the concentration is measured by changes in the optical signal. Another method is using laser sensors, which measure the concentration of particles by scattering or diffusing laser light.
2. Temperature detection: In air purifiers, temperature changes in the air are often measured using thermistors. These are temperature-sensitive resistors that change their resistance with temperature. By measuring the resistance, the temperature can be determined accurately.
3. Humidity detection: Humidity sensors in air purifiers typically use capacitive or resistive principles to measure the moisture content in the air. Capacitive sensors measure changes in the dielectric constant caused by moisture, while resistive sensors measure changes in resistance due to moisture absorption.
These sensors work based on their respective principles to detect the quality of the air in terms of particles, temperature, and humidity. By measuring these variables, air purifiers can effectively monitor and improve the air quality.