BAM 1022 Real-Time Portable Beta Attenuation Mass Monitor is a device that continuously measures the mass concentration of ambient particulate matter collected onto glass filter tape with a time resolution of one minute. The BAM 1022 uses an in-line sampling geometry, which allows for ambient sampling to occur for virtually 60 minutes each hour and for beta ray measurements to be made for virtually the entire hour, improving sensitivity and time resolution.

The BAM 1022 also employs a unique “in-situ” sampling technique that keeps the beta measurement at a nearly fixed temperature above ambient conditions, reducing measurement error due to loss of semi-volatile particulate material or excessive moisture in the sample stream. This means highly accurate measurements can be made without the need for expensive Nafion dryers, increasing reliability and decreasing operating costs.

The BAM 1022 is housed in a lightweight equipment shelter that is easily transportable and can be set up and put into operation in less than ten minutes. The shelter does not require air conditioning, and the sampling system does not use flow splitters, resulting in easier service, enhanced reliability, and lower power consumption. No component of the system weighs more than 40 lbs, making it easy to transport by one person.