What is a high volume sampler?
Total suspended particulate matter (TSP) An instrument called a high volume air sampler is used to collect TSP samples. The high volume air sampler draws a large known volume of air through a pre-weighed filter for 24 hours.
What is dust sampler?
A particulate matter sampler is an instrument for measuring the properties (such as mass concentration or chemical composition) of particulates in the ambient air.
What is particulate sampling?
The major purpose of ambient particulate sampling is to obtain mass concentration and chemical composition data, preferably as a function of particle diameter. The primary approach is to separate the particles from a known volume of air and subject them to weight determination and chemical analysis.
What are high volume air samplers used for?
High volume air samplers are used for the collection of airborne particulate matter in ambient air.
How does a manual particulate matter sampler work?
Manual samplers draw a known volume of air through a filter. The filter is weighed on an analytical balance before and after sampling, and the difference in weight divided by the volume of air pulled through the filter gives the mass concentration of the particulate. Automated samplers do the weighing in the field.
What are the different types of automated samplers?
Automated samplers do the weighing in the field. There are two types of automated samplers in common usage: samplers that use a beta gauge for mass measurement and samplers that use a tapered element oscillating microbalance (TEOM) for mass measurement.
How does a beta gauge particulate sampler work?
Beta gauge particulate samplers have an appearance that is similar to a reel to reel tape recorder. Air is pulled through a filter tape to accumulate a sample, the mass of the tape before and after sampling is determined by advancing the tape spot into the beta attenuation cell .
