Dust sensor for continuous monitoring of total dust concentration
Background:
Dust sensors are designed to sense dust particles in the air. Infrared light-emitting diodes and phototransistors are placed diagonally inside. Their optical axes intersect, and when the dust-laden airflow passes through the intersection area where the optical axes intersect, the dust reflects infrared light, and the reflected light intensity is positively related to the dust concentration. The emergence of dust sensors is to meet the continuous monitoring of total dust concentration in existing coal mines, cement plants, and mine monitoring operating environments. It can monitor and display the dust concentration in the well in real time and continuously under the condition of natural wind flow.
How the dust sensor works：
Dust sensors are developed according to the principle of light scattering. Particles and molecules can produce light scattering under the irradiation of light. On the other hand, a part of the energy of the irradiated light is also absorbed. When a beam of parallel monochromatic light is incident on the particle field under test, it will be disturbed by scattering and absorption around the particle, and the light intensity will be attenuated. In this way, the relative attenuation rate of incident light passing through the concentration field to be measured can be obtained. Most of the relative attenuation rate can linearly reflect the relative concentration of dust in the test field.
The magnitude of the light intensity is positively correlated with the intensity of the electrical signal converted by photoelectric conversion, and the relative attenuation rate can be obtained by measuring the electrical signal. The concentration of dust in the field to be measured can then be determined.
Dust sensor – pm2.5/10：
The laser particle (dust) sensor module independently developed by JXUNxun adopts the principle of laser scattering. The concentration of PM1.0/2.5/10 can be monitored. The particle sensor module adopts built-in shield, which makes the internal anti-interference more accurate. Accurate measurement. The machine is small in size, light in weight and easy to install. It can be used with wall-mounted, louver box and other appearance sensors. It can output PM2.5, PM10, temperature and humidity, TOC data at the same time, with high sensitivity and stable data. Product consistency, stability is very good. Good reliability, good versatility, moderate price. Support secondary development, flexible regulation, diversified development. The application is simple and easy to use.
Air quality sensor indoor：
The air quality sensor can monitor pm2.5/10, TVOC, eCO2, temperature and humidity in the air and other parameters. It can be used indoors and outdoors. There are three kinds of air quality sensors to choose from. You can choose the right air quality sensor according to your needs.Wall-mounted installation, save time and effort to install screws on both sides, can also be installed on the ceiling. The built-in waterproof probe selects photochemical gas detection probe for waterproof treatment. The probe shell is designed for multiple pores to ensure air circulation and accurate data. Enclosed waterproof strip Built-in enclosed waterproof strip, moisture-proof effect is remarkable.
Particulate matter sensor：
Laser particle sensor is a kind of sensor which uses scattering principle to detect dust particles in the air. It has the characteristics of small size, high detection accuracy, good repeatability, good consistency, real-time response and continuous acquisition, strong anti-interference ability, etc. Supports RS485/4-20mA/0-5V/ 0-10V/NB-LOT/Lora / 4G signal output. Meet environmental requirements. The shell adopts IP65 high density material. Built-in waterproof strip, moisture-proof and dustproof. High temperature and humidity environment, dust, rain and snow and other harsh environment can be used. You can use the cloud platform to configure the configuration interface based on site conditions and view data at any time.
