Features:
1. Flexible sampling methods, each can be controlled separately.
2. LCD display, automatically adjusts contrast, good human-machine interaction.
3. Brushless control fan, high stability, low noise, long service life.
4. Automatic flow control, no flow fluctuation, constant flow sampling.
5. Automatic recovery after power failure.
6. Real-time pressure and temperature monitoring.
7. Particle filtration function.

Precautions:
1. The Atmospheric Sampling Device should be placed in a dry, well-ventilated and shaded area, avoiding strong vibrations, collisions and the invasion of dust, rain and snow.
2. When in use, the inlet and outlet of the absorption bottle must not be reversed; otherwise, the absorption liquid will be sucked into the pump, damaging the instrument.
3. During sampling, a filter should be connected to the air inlet to prevent dust, aerosols, acidic and alkaline gases, etc. from being sucked into the pump.
4. Before use, the airtightness of the air sampler should be checked to ensure that there is no leakage in the sampling system. If there is any leakage, it should be eliminated or a new device should be replaced in time.
5. When connecting the absorption bottle pipeline, make sure the connection is correct to prevent back-suction during sampling.
6. The air sampler should be maintained and calibrated regularly to ensure its stable and reliable performance.
7. After sampling, the air sampler should be turned off in time, the sampling membrane or absorption liquid should be removed, and the samples should be properly stored and transported in accordance with the regulations.
8. After use, the sampling head and filter should be cleaned, and the collected samples should be properly sealed and stored, with the sample number and sampling time recorded.