Update: 2020-07-28 16:38 Source: LUFTMY
PM2.5 detector refers to a special detection instrument dedicated to measuring PM2.5 (particulate matter that can enter the lungs) value in the air.Due to the deterioration of air quality in recent years, excessive PM2.5 concentration in the city leads to frequent smog, and people pay more and more attention to air quality.There is an increasing demand for PM2.5 detector. PM2.5 detector is often used for the determination of public environment, atmospheric environment and indoor air, and also for the evaluation and analysis of the purification efficiency of air purifiers.
Dust sensor is an essential component of PM2.5 detector. What kind of PM2.5 sensor is better for PM2.5 detector?Generally, dust sensors are divided into infrared dust sensor and laser dust sensor. No matter it is infrared dust sensor or laser dust sensor, it can accurately measure the concentration value of particulate matter in the air without special environmental requirements.The difference is that the laser dust sensor has a fan, which can produce a stable airflow. Once started, the PM2.5 concentration of the current environment can be quickly acquired.
The INFRARED dust sensor can also be installed in the PM2.5 detector. However, there is only a heating resistor inside the infrared dust sensor without a fan. The difference between the temperature inside and outside of the sensor after the resistance is heated up can generate airflow and detect the value of PM2.5 concentration in the airflow.If it is a portable PM2.5 detector, laser PM2.5 sensor is generally used because of the requirement of rapid response and the test field may be in change, while some fixed PM2.5 detectors or PM2.5 detectors that do not need to be moved often can be equipped with infrared PM2.5 sensors.For this reason, the infrared dust sensor is not suitable for the portable detector.
Compared with laser dust sensor, infrared dust sensor has no fan to bring stable airflow, but it also has the irreplaceable advantage of laser dust sensor, that is, low price and suitable for more products.The main dust sensors of LUFTMY are laser and infrared, which can be used for PM2.5 detector or vacuum cleaner, fresh air system and other equipment to detect THE concentration of PM2.5.