TSP high volume air samplers are commonly used in air quality monitoring to determine the concentration of total suspended particulates in ambient air. These samplers typically operate at a constant flow rate over a set sampling period to collect particulates on a filter medium. The collected filter is then analyzed to determine the concentration of total suspended particulates or identify the type of particulate matter present. The components of a TSP high volume air sampler usually include an outdoor shelter, a timing device, a filter holder, a vacuum motor, a flow control device, a pressure recorder, and an elapsed time indicator.
The TSP high volume air sampler collects total suspend particulates in the air. The vacuum motors pulls ambient air onto the 8″ x 10″ glass fiber filter at a flow rate between 39-60 cfm. TSP air particulate samplers do not use a particle separator which results in the collection of all ambient particulates. The glass fiber filters are weighed pre and post sample and the weight is used to determine the total suspended particulate matter.
Mass flow Controlled (MFC) TSP particulate samplers are designed to control the flow rate using a hot wire anemometer probe, which automatically adjusts the motor speed as the filter begins to collect particulate. This is done to ensure accurate sampling results.
These systems are available with either a 7 day mechanical timer or a US EPA recommended digital timer, which further enhances the accuracy of the sampling results. Additionally, customers have the option of choosing between a brush style motor or a brushless style motor.
Overall, it seems that these MFC TSP high volume air samplers are designed to provide reliable and accurate sampling results, making them suitable for various applications that require the monitoring of particulate matter in the air.
Volumetric flow controlled (VFC) TSP particulate samplers use a critical orifice with a predetermined orifice hole diameter to control the flow rate, which allows only the predetermined flow rate to pass through the filter. The motor on these systems operates wide open while the critical orifice maintains a constant flow rate. This type of sampler is designed to ensure that the sampling rate remains constant throughout the sampling period, which is crucial for accurate results.
Similar to MFC TSP samplers, VFC TSP samplers are available with a 7 day mechanical timer or a US EPA recommended digital timer. This allows users to choose the option that best suits their needs and ensures accurate sampling results. Customers also have the option of choosing between an economical brush style motor or a maintenance-free brushless motor.
Overall, VFC TSP particulate samplers are suitable for applications that require accurate and reliable measurements of particulate matter in the air. The use of a critical orifice and a constant flow rate ensures consistent and accurate sampling, which is essential for applications such as air quality monitoring and industrial hygiene.
MFC PLUS system is the most advanced TSP ambient particulate sampler on the market. It utilizes a microprocessor based controller for instantaneous and accurate flow control. The system’s built in temperature and barometric pressure sensors along with the microprocessor-based mass flow controller allow the system to accurately calculate the flow rate. The PLUS technology flow controllers include a built in digital timer with internal battery backup, multiple elapsed time indicators, and four data logs with an external USB drive for data retrieval. The system data-logs record the average, minimum, and maximum ambient temperature and barometric pressure as well as the total ambient and standard flow rate. These PLUS technology flow controllers also include an auto calibration feature which eliminates the need for lengthy field calibration and manual flow rate calculations.