Abstract
Before 2005 exemption level of sealed gamma-ray (γ-ray) source activities is 3.7 MBq in Japan. Radiation protection regulation of Japan was changed and the exemption level was reduced in 2005. At that time, new certification system was started by MEXT. The certificated equipments can be used without any license and controlled area. All products of ourγ-ray density meters, γ-ray level gauges andγ-ray level switches had the certifications from MEXT.
Nanogray Inc. introduces brand-new certificatedγ-ray density meter PH-1000 and PM-0300. PH-1000 is precise and has only 0.2∼0.28% error@2σ. PM-0300 is light (6 kg) , tiny and can be changed applied pipe size in a moment. Density meter PH-1000, PM-1000 and PM-0300 can be applied density measurement of black liquor, green liquor, lime mud, calcium carbonate, and white carbon etc.
