Features of particulate samplers
Particulate samplers will have an intake valve, a method of filtering and measuring, and a data display. They will also need to be connected to a power source or have batteries. The data collected can be displayed or stored depending on your needs and the model of particulate sampler being used.
How particulate samplers work
Particulate samplers draw in an air sample, collect the particulates on a filter, then measure and compare before and after readings to calculate the mass concentration in the sample. There are several types of filters and measuring methods used in particulate sampling.
Manual – a known volume of air is drawn through a filter, the weight of the filter before and after collection of the particulates in the air sample are calculated and compared to the volume of air to get the mass concentration.
Beta gauge – an air sample is drawn in and the particulates are collected on a rotating tape, beta rays are sent through the tape both with and without particulates, a comparison of the absorption rate of the beta rays provides the mass concentration of particulates in the sample.
Tapered element oscillating microbalance (TEOM) – air sample is drawn through a filter and into a glass tube, an electric current is used to create oscillation of the tube, the resonant frequency of the tube is proportional to the mass of particulates on the filter.
About particulate samplers
Microscopic liquid and solid particles in the air and atmosphere are called particulates. Some can be dangerous to humans and high concentrations are less than ideal. Particulate samplers are used to measure the amount of particulates in the air. These are frequently used in industrial settings to protect the safety of the workers.
Particulate Sampler Applications
- Pollution monitoring
- Environmental science
Particulate Sampler Manufacturers
- Concept Controls
- SKC, Inc.
- Thermo Scientific