Classification of Commonly Used Sampling Pumps

Sampling pumps are devices used to collect air, gas, or particulate matter. They are typically characterized by their small size, light weight, and portability, enabling rapid and accurate sampling on-site while ensuring sampling accuracy. Based on their applications and sampling methods, sampling pumps can be classified into the following types:  

1. Handheld Sampling Pumps

Handheld sampling pumps are common portable sampling devices, primarily used for sampling according to the worker's exposure limit (WEL). They find applications in various industries such as manufacturing, aerospace, mining, and healthcare. Handheld sampling pumps are characterized by their simple structure, easy operation, and lightweight design.

2. Fixed Sampling Pumps

Fixed sampling pumps are devices that can be permanently installed at sampling points for periodic sampling. They are commonly used in environmental monitoring, indoor air sampling, and chemical plants. Fixed sampling pumps are characterized by their complex structure and heavier weight but offer higher stability and long-term sampling efficiency compared to handheld sampling pumps.

3. Separated Sampling Pumps

Separated sampling pumps are primarily used to collect samples of high sensitivity and high-resolution gases or particulates. By separating the sampling head from the pump, it reduces errors caused by airflow interference, allowing for precision control in the cylinder section and minimizing the impact on the substance being measured. Separated sampling pumps find applications in fields such as food, pharmaceuticals, chemical materials, and biology.

4. Multi-channel Sampling Pumps

Multi-channel sampling pumps are devices that integrate multi-channel sampling and analysis. They can meet the needs of precise air monitoring and sampling in various locations and environments. Multi-channel sampling pumps can not only simultaneously monitor the sampling conditions at multiple points but also conduct effective atmospheric environmental monitoring through data analysis and comparison.

In conclusion, different types of sampling pumps can be selected for sampling based on the application scenario and sampling purpose. When making a specific selection, factors such as accuracy, sampling capacity, operational convenience, and experimental environment should be considered.