Survey Meter

The 451B state of the art ion chamber Survey Meter with Beta Slide is a handheld battery operated unit designed for use in both rugged and normal ecvironments. The 451B includes a sliding beta shield to serve as an equilibrium thickness for photon mesurements and enables beta discrimination. the 451B has auto ranging and measure radiation rate and accumulated dose from various radiation surces (beta, X ray, gamma) The ion chmaber detector allows for a fast response time to radiation leakage, scatter beames, and pinholes additionally the low noise chamber bias supply provides for fast backgorund setting time.