1、 Product Overview

The PC-3A-2 portable laser inhalable dust continuous tester is a high-performance instrument that introduces imported laser technology to quickly and accurately measure respiratory dust particles (PM2.5PM10). This instrument has the characteristics of fast, accurate and stable testing, simple operation, easy maintenance, no noise pollution, and dual-use of AC and DC. This instrument is a portable direct reading measuring instrument using light scattering method. It has the advantages of fast testing speed, high sensitivity, good stability, light weight, low noise, simple operation, and dual-use of AC and DC. Especially suitable for measurement in situations without external power supply.
This instrument is a new generation of intelligent measuring instrument for real-time and rapid measurement of inhalable particulate matter concentration in the air by disease control centers, health supervision, environmental monitoring and other departments. Suitable for real-time monitoring by departments such as the Centers for Disease Control and Prevention, health supervision, and environmental testing.
2、 Measurement principle
This instrument is designed according to the Chinese health industry standard: "Method for determination of inhalable particulate matter (PM2.5PM10) in the air of public places - Light scattering method" (WS/T 206-2001). This instrument consists of sensors and data processors assembled together. The sensor is a key component for data acquisition in this instrument. The principle of this component is to convert a laser beam through a set of non spherical mirrors into a fine measurement beam with uniform power density distribution. A scattered light collection lens group with a front focal point on the beam trajectory and a rear focal point on a photoelectric converter is located in front of the beam trajectory. When a flowing sampling air passes through the intersection of the laser beam and the front focal point of the scattered light collection lens group, the dust particles in the air emit scattered light corresponding to their physical size. The scattered light is collected by the optical lens and received by the photoelectric conversion device at the rear focal point, and converted into corresponding electrical signals. The sampling gas inlet of the sensor is located at the top of the instrument. The power source for collecting air is a brushless DC fan. The data processor separates the large particles from the electrical signals collected by the sensors through an electronic cutter, and then converts them into humidity, mass concentration, and other parameters using a microprocessor. The results are displayed, stored, or printed on an LED monitor.
3、 Main technical indicators
1. Measurement range of inhalable particulate matter: 0.001~10mg/m ³;
2. Measure PM2.5 and PM10;
3. Relative measurement error: ≤ ±10%；
4. Detection sensitivity: 0.001mg/m ³;
5. Sampling time: 8 sets of sampling times can be preset, and the measurement and stopping time for each set can be set by the user within 0-99 minutes;
6. Data storage capacity: The system is divided into 10 data storage areas, each with 200 sets of data, and can store a total of 2000 sets of data in 10 areas;
7. Matching printer: a mini printer that is connected to the host only through a data cable, allowing for direct printing anytime, anywhere, without the hassle of being unable to print due to lack of AC power supply;
8. Working power supply: built-in battery, AC/DC dual-use; With the built-in battery fully charged, it can measure continuously for 8 hours.
9. Host volume: 230mm × 120mm × 43mm;
10. Host weight: 610g;
4、 Product Features
Compared to other series of products, the upgraded version of the instrument has the following significant features:
1. Capable of detecting PM2.5 and PM10, truly achieving dual-use in one device;
2. Large screen LCD Chinese display, rich display content, LCD with blue backlight;
3. Equipped with a built-in real-time clock, the measurement data is stored with time, making it convenient for users to conduct statistics and analysis;
4. Measurement data can be transmitted to a computer through a serial port;
5. Micro printers can print data without the need for an external power supply;
6. Up to 2000 sets of data can be stored.
7. Users can set the measurement and stop time for each group within 0-99 minutes to achieve continuous detection.
5、 Application location
1. Environmental monitoring, on-site dust measurement in industrial and mining workshops (above mines), steel mills and power plants
2. Applicable to the determination of dust concentration in production sites of labor departments in industrial and mining enterprises
3. Monitoring of inhalable particulate matter in public places of health and epidemic prevention stations
4. Environmental protection monitoring department conducts atmospheric dust detection and pollution source investigation
5. On site testing of scientific research, filter performance testing, and other aspects
6. On site dust concentration measurement, exhaust dust concentration monitoring
7. Drug manufacturing testing
8. Occupational health and safety testing
9. The management of manufacturing processes such as precision instruments, testing instruments, electronic components, food, and pharmaceuticals in areas where factories require clean air
10. Various research institutions, meteorology, public health, industrial labor hygiene engineering, air pollution research, etc
6、 Configuration List:

1. One PC-3A-2 host

2. A set of micro printers

3. One 5V power adapter

4. One battery charger

5. One printer data connection cable

6. A roll of printing paper for a printer

7. One aluminum alloy instrument box