The Models 9-4 and 9-4RF are rugged air ionization chamber meters for measuring beta-gamma dose rates. The Model 9-4RF has improved components and shielding to pass RF susceptibility tests at military levels up to 18 GHz.
The Models 9-4 and 9-4RF are rugged air ionization chamber meters for measuring beta-gamma dose rates. The Model 9-4RF has improved components and shielding to pass RF susceptibility tests at military levels up to 18 GHz.