Get fast response time to radiation with the 451B's ionization chamber detector
Measures skin dose (slide open) and deep dose (slide closed)
High sensitivity measurement of rate and dose simultaneously
Records peak rate using “Freeze Mode”
Auto-ranging and auto-zeroing
RS-232 communications interface with optional Windows-based Excel add-in for data logging
Ergonomic, anti-fatigue handle with replaceable grip, wrist strap and tripod mount
Programmable flashing LCD display
Easily-accessible battery door (operated by two 9-volt alkaline batteries) on the outside of the bottom case
Available with dose equivalent energy response (SI units)
Ion Chamber Survey Meter with Beta Slide (R and R/h)
Ion Chamber Survey Meter with Beta Slide (Sv and Sv/h)
The 451B’s site surveying capabilities make it well-suited for a wide range of end users, and the ionization chamber detector allows for a fast response time to radiation from leakage, scatter beams and pinholes.
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The auto-ranging 451B ion chamber survey meter measures radiation rate and accumulated dose from beta, gamma and x-ray radiation sources. The 451B’s site surveying capabilities make it well-suited for a The auto-ranging 451B ion chamber survey meter measures radiation rate and accumulated dose from beta, gamma and x-ray radiation sources. The 451B’s site surveying capabilities make it well-suited for a wide range of end users, including police and fire departments, x-ray manufacturers, government agencies, state inspectors, emergency response and HAZMAT teams, nuclear medicine labs, hospital radiation safety officers, and nuclear power workers. Additionally, the low noise chamber bias supply provides for fast background settling time. A sliding beta shield serves as an equilibrium thickness for photon measurements and enables beta discrimination. The digital display features an analog bar graph, 2.5-digit digital readout, low battery and freeze (“peak hold”) mode indicators, and an automatic backlight function. User controls consist of an ON/OFF button and a MODE button. The RS-232 interface can be connected directly to a computer for use with the Excel add-in for Windows (451EXL), enhancing the functionality of the instrument. This software allows for data retrieval, user parameter selection and provides a virtual instrument display with audible (requires sound card) and visual alarm indication.