Met One Instruments Real-time Portable Beta Attenuation Mass Monitor

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Met One Instruments Real-time Portable Beta Attenuation Mass Monitor

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A monitor to continuously measure the mass concentration of ambient particulate matter collected onto glass filter tape with time resolution of one-minute

How it works

The Met One Instruments Real-time Portable Beta Attenuation Mass Monitor (Model BAM 1022) is a monitor to continuously measure the mass concentration of ambient particulate matter collected onto glass filter tape with time resolution of one-minute.

The BAM 1022 employs an in-line sampling geometry in which the attenuation of beta rays across filter media is measured and particulate matter is sampled simultaneously. This allows ambient sampling to occur for virtually 60 minutes each hour. It also allows for beta ray measurements to be made for virtually the entire hour thereby improving sensitivity and time resolution.

The BAM 1022 employs a unique “in-situ” sampling technique where the beta measurement is kept at a near fixed temperature above ambient conditions, thereby minimising measurement error due to loss of semi volatile particulate material or due to excessive moisture in the sample stream. Highly accurate measurements are made without having to employ expensive Nafion dryers thereby increasing reliability and decreasing operating costs.

Advanced Features

  • In-Situ measurement of PM that provides high accuracy, minimal measurement artefacts
  • Reduced background determination frequency
  • Unsurpassed performance under high ambient dew point operation
  • Advanced communications features allowing remote operation and cloud-based communication
  • Advanced diagnostics
  • Improved sensitivity compared to other in-line beta attenuation mass monitors
  • Meteorological and other sensor inputs

Applications

  • Criteria-grade air quality surveillance networks
  • Near-roadside PM monitoring
  • Rapid development applications
  • Research and development

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