451P - 3 Pages

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451P

Catalog excerpts

Pressurized µR Ion Chamber Survey Meter Technical Data The 451P state-of-the-art ion chamber survey meter is a handheld battery operated unit designed for use in both rugged and normal environments. The 451P is a pressurized ion chamber for μR resolution. The 451P auto-ranges and measures radiation rate and accumulated dose from various radiation sources (beta, x-ray and gamma). The ion chamber detector allows for a fast response time to radiation from leakage, scatter beams, and pinholes. Additionally, the low-noise chamber bias supply provides for fast background-settling time. The digital display features an analog bar graph, 2.5 digit readout, low battery indicator, freeze (peak hold) mode indicator and an automatic backlight function. User controls consist of an ON/OFF button and a MODE button. The case is constructed of lightweight, high strength materials and is sealed against moisture. 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 and visual alarm indication. Key features • High µR 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)

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Specifications Radiation detected Operating ranges, response time Within 10 % of readings between 10 % and 100 % of full scale indication on any range, exclusive of energy response 230 CC Pressurized ionization chamber to 8 atmospheres or 125 psi Automatic features Auto-zeroing, auto-ranging, and auto-backlight Warm-up time Less than one minute for initial operation when the instrument is in temperature equilibrium with the surrounding area, typical. (About four minutes for readings if less than 20 μR/h in a 10 μR/h or less background) Display LCD analog/ Analog digital with backlight 100...

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451P typical energy dependence 1.2 Ordering Information 451P-RYR Pressurized µR Ion Chamber Survey Meter with standard chamber 451P-RYR-SS Pressurized µR Ion Chamber Survey Meter with molded grip handle and shoulder strap Optional accessories 451EXL 451 Assistant for Excel, includes RS-232 interface cable 190HPS Single Unit Carrying Case 62-103 Check Source, 137 Cs, 10 µCi. Flat disc, 1-inch diameter **Due to the pressurized ion chamber, the 451P is considered U.S. Department of Transportation (DOT) Dangerous Goods and must be shipped via IAW DOT special permit DOT-SP 13187. About Fluke...

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