The sampler of the Working Level Monitor is a self contained instrument with all elements of an intelligent data collection system and an alpha-spectrometer including:
The figure shows a cross section of the sampler.
It collects the radon daughters on the surface of the filter. The surface barrier detector
simultaneously registers the alpha-radiation from the filter. An integrated multi-channel-analyzer
collects the alpha-spectrum in 256 channels. The micro computer analyzes the spectrum and prints directly
the activity concentrations in the air.
Optionally the communication interface (by Rs-232) of the sampler can be connected with a personal computer. It is possible to control a large area by several Working Level Monitor Samplers which are connected via a local network or telephone modems with a central data collection station.