Development of an Easily-handling Survey Meter for Measuring Atmospheric Radon

An easily-handling radon instrument was developed for using on the job of radiation monitoring in atomic and radiation facilities and in the environment. This instrument was named as “Radon Survey Meter” because a handy-type instrument and this was driven with battery and/or AC power. The weight of radon survey meter was 3 kg. Air is sampled by open and close of drawer of gas container within 10 seconds and radon concentration is measured by 10 minutes. From a practical test in natural environment and using a radon source, it is cleared that this survey-meter was performed in radon concentration of 20-10,000Bq/m3.