The particulate matter automatic sampler is an instrument used to monitor the concentration of particulate matter in the air, and its usage should pay attention to the following aspects：

1. Preparation: Before use, it is necessary to inspect and prepare the equipment. Ensure that the equipment is in normal working condition and check if all components of the sampler are intact and undamaged.

2. Installation location: Choose a suitable location to place the particle automatic sampler, usually considering the representativeness and convenience of the sampling points. Avoid placing devices in environments that are susceptible to pollution or interference.

3. Parameter setting: According to the monitoring requirements, set the sampling time, sampling period, sampling flow rate and other parameters of the particulate matter automatic sampler. Ensure that the parameter settings are correct to ensure the accuracy of the sampled data.

4. Calibration: Use calibration gas or standard particulate matter to calibrate instruments regularly to ensure the accuracy and reliability of monitoring data.

5. Start sampling: After all preparation work is completed, start the particle automatic sampler for actual monitoring. During the monitoring process, it is necessary to ensure the stable operation of the equipment, regularly check the equipment status and monitoring data.

6. Data processing: The data collected by the particulate matter automatic sampler needs to be processed and analyzed, usually through computer software for data processing and report generation. Timely analyze and interpret monitoring data to identify pollution sources and develop corresponding control measures.

7. Maintenance: Regularly maintain and upkeep the instrument, including cleaning the instrument, replacing the filter membrane, calibrating the instrument, etc. Maintain the stability and accuracy of the equipment.

By using the above methods, users can operate the particulate matter automatic sampler correctly and effectively, ensuring the accuracy and reliability of monitoring data, and providing strong support for environmental monitoring and air quality protection work.