Dust DetectorIt is mainly used to detect dust concentration in the environment. Currently, people have increasingly high requirements for living, working, and living environments. Its working principle is mainly based on microcomputer laser and AC electrostatic induction principle; Mainly applicable to various research institutions, meteorology, public health, industrial labor hygiene engineering, air pollution research, etc.
purpose
Dust DetectorThe main application locations are:
1. Applicable to the determination of dust concentration in production sites of labor departments in industrial and mining enterprises
2. Monitoring of inhalable particulate matter in public places of health and epidemic prevention stations
3. Environmental protection monitoring department conducts atmospheric dust detection and pollution source investigation
4. Municipal tobacco monitoring
5. On site testing of scientific research, filter performance testing, and other aspects
6. On site dust concentration measurement and exhaust dust concentration monitoring
7. Drug manufacturing testing
8. Occupational health and safety testing
9. Management of manufacturing processes such as precision instruments, testing instruments, electronic components, food, and pharmaceuticals in areas where clean air is required by the factory
10. Various research institutions, meteorology, public health, industrial labor hygiene engineering, air pollution research, etc
11. Dust detection at construction or blasting sites; Exposure monitoring at construction sites
12. Indoor air quality testing
working principle
Dust DetectorThe working principle of is mainly based on the principles of light scattering and electrostatic induction.Principle of light scattering:
Dust analyzerThe aerosol to be tested is sucked into the detection chamber through a sampling pump, and the aerosol to be tested is divided into two parts at the branching point. One part is filtered into clean air after passing through a filter, which serves as a protective sheath to protect the components in the sensor room from contamination by the gas to be tested. The other part of the aerosol, as the sample to be tested, directly enters the sensor room. In the sensor room, the main components are laser diodes, lens groups, and photodetectors. When detecting, the laser emitted by the laser diode first forms a thin layer surface light source through a lens group. When thin layer light is irradiated on the aerosol flowing through the sensor chamber, scattering occurs, and the scattered light intensity is detected by a photodetector. After being illuminated, the photodetector generates an electrical signal proportional to the mass concentration of the aerosol. Then multiply by the voltage calibration coefficient, which is obtained by measuring specific concentrations of aerosols. The commonly used test aerosol for calibration is Arizona test dust (or ISO 12103-1, A1 test dust).
Principle of electrostatic induction
Utilize the dynamic charge induction between dust particles passing through the probe to generate a signal. The communication electrostatic technology determines the disturbance amount of the AC signal by monitoring the standard deviation of the charge signal, and determines the dust emission amount based on the magnitude of the instantaneous disturbance amount.
product standard
All dust meters comply with·
Industry standard WS/T206-2001 of the Ministry of Health: Determination of Inhalable Particulate Matter (PM10) in the Air of Public Places - Light Scattering Method·
Industry standard LD98-1996 of the Ministry of Labor, "Determination of Dust Concentration in the Air by Light Scattering Method"·
Railway Industry Standard TB/T2323-92 "Determination of Relative Mass Concentration and Mass Concentration Conversion Method for Dust on Railway Operation Sites"
Main products
The commonly used models in the market now include instruments such as SIDPAK, DUSTTRAK, LD, P-5L2C, Sintrol S300 series, etc. The accuracy and measurement range of these products also vary, with general accuracy of 0.01mg/m3 and 0.001mg/m3, and range of 0.01-100mg/m3 and 0.001-10mg/m3.
SIDPAK series
SIDEPAK AM510 personal dust analyzer is suitable for industrial hygiene and occupational safety, and can display real-time dust concentration and record data. Simple structure, quiet operation, easy to carry, minimizing interference and discomfort for staff to the greatest extent possible. Built in sampling pump, and can select different channels for sampling according to different needs.
The AM510 personal dust analyzer includes TSI's intelligent battery management system, which can monitor battery status and display running time. The AM510 personal dust analyzer displays both real-time aerosol concentration and 8-hour average value (TWA). In addition, the AM510 is UL Intrinsic Safety certified and suitable for use in explosive or hazardous environments. The TRAKPROTM data analysis software provided with the instrument makes data transmission and processing more convenient and effective.
The SIDEPAKTM SP series is a personal air sampling pump suitable for air sampling in industrial hygiene and occupational safety. Used in conjunction with filter paper or absorption tube (note: not included in this sampling pump), it can collect dust or gas in the air.
The SP series sampling pump adopts an intelligent battery management system with integrated microchip technology, which can count the battery life in real-time and display the running time in minutes. The SP series sampling pump can use multiple batteries. When selecting a rechargeable nickel cadmium battery pack with 1650 mAH or 2700 mAH, the sampling pump meets the essential requirements; But when using a 6-cell alkaline battery pack, it is not essential. In addition, through concise and clear keyboard input, simple keyboard programming can be performed for sampling, setting sampling time, sampling flow rate, etc.
DUSTTRAK series
DUSTTRAKTM II models 8530, 8531, and 8532 are desktop or handheld, suitable for any environment and application. The new DUSTTRAK II aerosol monitor is composed of battery driven, data recording, and light scattering laser photometer, which can provide real-time readings of aerosol mass concentration. They use sheath gas systems to isolate aerosols in the optical chamber, maintain optical cleanliness, and improve reliability and low maintenance costs. This instrument can be used in clean offices, as well as in harsh industrial workshops, construction sites, environmental monitoring, and other outdoor environments.
The DUSTTRAK II monitor can measure aerosols in dust, smoke, thick smoke, and thin mist. This series is easy to program and operate, with a new graphical interface and color touch screen. It can perform online weight analysis for convenient daily reference calibration, and has automatic zero adjustment (optional: zero adjustment module) to reduce zero drift. It can measure PM1, PM2.5, PM10, and inhalable particulate matter.
The DUSTTRAKTM DRX aerosol monitor can simultaneously measure mass concentration and particle size. DUSTTRAKTM DRX uses battery power to automatically record data, and the light scattering laser photometer can achieve real-time reading of aerosol mass concentration. The DUSTTRAK DRX uses a sheath gas system to isolate aerosols and optical chambers, ensuring the cleanliness of optical components, extending their lifespan, and reducing maintenance costs.
LD series
The LD-3C laser dust analyzer is an advanced pocket sized dust analyzer that uses laser as the light source and meets the industry standards of the Ministry of Health for rapid dust measurement; More than a thousand units have been used across the country.
This instrument is suitable for rapid determination of inhalable particulate matter (PM10) concentration in public places, detection of dust concentration in labor hygiene aspects such as industrial and mining production sites, monitoring of inhalable dust concentration in the field of environmental protection, and evaluation of purification efficiency of air purifiers. Introducing a complete set of production, manufacturing, testing, and calibration technologies and equipment from Japan
LD-5C is a new type of microcomputer laser dust analyzer with built-in filter membrane online sampler that has reached the advanced level of the new century. While continuously monitoring dust quality concentration, particulate matter samples can be collected and multiple cutters compatible with PM2.5, PM.5, PM10, and TSP can be achieved.
The microcomputer laser dust analyzer with a new type of built-in filter membrane online sampler, which has advanced level in the new century, can continuously monitor dust concentration and collect particulate matter for analysis of its composition, and calculate the mass concentration conversion coefficient K value. It can directly read the dust mass concentration (mg/m3) and has PM10, PM5, PM2.5, and TSP cutters for selection The instrument adopts a powerful suction pump, making it more suitable for detecting the concentration of PM10 inhalable particulate matter at the central air conditioning exhaust port that requires a longer sampling tube.
The LD-6S multifunctional laser dust analyzer is a new generation of laser particle analyzer product with humidity continuous automatic correction function (No. ZL 2008 2 0122691.2). LD-6S (A) is portable; LD-6S (R) is a wireless transmission type online instrument.
This instrument can effectively reduce humidity interference, achieve high precision, high sensitivity, wide range, and compatibility with various particle cutters such as PM10, PM5, PM2.5, and PM1.0. The instrument is equipped with a Φ 40mm filter membrane sampling device, which can collect particulate matter samples while continuously monitoring, and has functions such as data processing, storage, timed sampling, and dust over limit alarm. This instrument is particularly suitable for continuous online monitoring of particulate matter 24/7, as well as serving as a replacement product for existing dust meters. LD-6S (R) wireless transmission multifunctional laser powder analyzer
P-5L2C series
The P-5L2C portable microcomputer dust analyzer is a new generation of rapid dust measurement instrument developed by Beijing Binda Green Creation based on the introduction of the Japanese Shibata P-5L2 portable digital dust analyzer and the addition of microcontroller control. It is suitable for the rapid determination of PM10 concentration of inhalable particles in public places, as well as the determination of respiratory dust and total dust in labor hygiene aspects of industrial and mining enterprises. In recent years, thousands of P5 type instruments have been used throughout the country, making it the most advanced product among similar testing instruments.
Sintrol series
Dust removal system: During the transportation process of gas-solid two-phase fluid containing dust particles through pipelines and dust collectors, the collision and friction between dust particles and dust particles, dust particles and the inner wall of pipelines, dust particles and filter cartridges, and dust particles and flue gas will cause electrostatic charges on the dust particles The electrostatic charge is directly related to the dust content in the gas-solid two-phase fluid inside the pipeline. The arithmetic mean of the charge and the root mean square of the disturbance both reflect the dust content inside the pipeline This type of charge conversion is called electrostatic friction effect, or electrostatic induction. The UNIFTER dust switch adopts the principle of AC electrostatic induction to measure the changes in electrostatic charge and determine whether the bag dust removal system is operating normally. When the bag ruptures, the dust content in the gas-solid two-phase flow in the pipeline increases, and the electrostatic field strength also increases.
The S300 series dust meter adopts the measurement method of *. Once the dust concentration value of an order point is given, the entire range will be automatically generated by the instrument, and the dust meter will automatically track the changes in concentration value without the need for manual setting. Therefore, the repeatability, reliability, and ease of operation of S300 make it widely used in various industries such as feeding, filtration, and environmental protection. Typical applications: such as blast furnace gas TRT power generation, gas pressurized transportation, pulverized coal pressurized gasification, clean coal process, gas power generation, etc.
The S303 online dust detector is designed specifically for process monitoring of dust concentration trends, including bag filtration systems, ceramic filtration systems, or core filtration systems. The 303 online dust detector has switch output and 4-20mA analog signal output for monitoring the trend of dust concentration changes. Usually installed downstream of equipment such as filters, cyclones, dryers, etc. to monitor the concentration of solid particles. When the particle concentration in the airflow exceeds the required standard, the two alarm relays start to sound an alarm. It can also be used for process control under specific application conditions.
S304- Linear dust emission detection, mainly used for dust emission detection. For the convenience of installation and operation, the sensor and control unit are placed together in a housing with a protection level of IP65.
S305- Flue dust monitoring is specifically designed for environmental monitoring and flue dust concentration monitoring, and has TUV environmental certification.
The S31X safety mode dust detector is used in hazardous areas and is equipped with two alarm relays and a 4-20mA signal output. The sensor is designed specifically for explosive environment applications and meets Atex certification requirements, with II/GD EEx ia IIC T6, IP65, T85 ℃. The monitoring system includes EEx sensors, split transmitters, signal processing units (monitoring equipment), and the overall design is easy to install and operate.
