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Title: Portable apparatus for the measurement of environmental radon and thoron

The radometer is a portable instrument for the measurement of the concentration of atmospheric radon/thoron in a test area. A constant velocity pump pulls the air from the outside at a constant flow rate. If the air is too moist, some or all of the sample is passed through a desiccant filter prior to encountering an electrostatic filter. The electrostatic filter prevents any charged particles from entering the sampling chamber. Once the sample has entered the chamber, the progeny of the decay of radon/thoron are collected on a detector and measured. The measured data is compiled by a computer and displayed.
Authors:
 [1]
  1. (New Hyde Park, NY)
Publication Date:
OSTI Identifier:
873989
Report Number(s):
US 6288400
Resource Type:
Patent
Research Org:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
Country of Publication:
United States
Language:
English
Subject:
portable; apparatus; measurement; environmental; radon; thoron; radometer; portable; instrument; measurement; concentration; atmospheric; radon; thoron; constant; velocity; pump; pulls; air; outside; constant; flow; rate; air; moist; sample; passed; desiccant; filter; prior; encountering; electrostatic; filter; electrostatic; filter; prevents; charged; particles; entering; sampling; chamber; sample; entered; chamber; progeny; decay; radon; thoron; collected; detector; measured; measured; data; compiled; computer; displayed; portable instrument; velocity pump; electrostatic filter; electrostatic filter; charged particles; flow rate; charged particle; atmospheric radon; sampling chamber; filter prevents; constant velocity; constant flow; measured data; table apparatus /250/