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Ion Chamber Survey Meter With Beta Slide

Ion Chamber Survey Meter With Beta Slide
Ion Chamber Survey Meter With Beta Slide
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Product Code : 451B
Product Description

Fluke Survey Meter

Ion Chamber Survey Meter with Beta Slide

Technical Data
The 451B state-of-the-art ion chamber survey meter is a handheld battery operated unit designed for use in both rugged and normal environments. The 451B includes a sliding beta shield to serve as an equilibrium thickness for photon measurements and enables beta discrimination. The 451B has auto-ranging and measure radiation rate and accumulated dose from various radiation sources (beta, x-ray, 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 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 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 (requires sound card) and Visual alarm indication.

Key features

  • Measures skin dose (slide open) and deep dose (slide closed)
  • High sensitivity measurement of rate and dose simultaneously, with the capability to record peak rate
  • 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 and audible alarm
  • 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)



451 B

Detector

Ion Chamber

End users

  • X-ray manufactures
  • State Inspectors
  • Government agencies
  • Police and fire departments
  • Emergency response and HAZMAT teams
  • Nuclear medicine labs
  • Hospital radiation safety officers
  • Nuclear power workers

Radiation detected

Beta, X-ray, gamma

Specifications

Radiation detected

Alpha

> 7.5 MeV

Beta

> 100 keV

Gamma

> 7 keV

Operating ranges, response time

  • 0 mR/h to 5 mR/h (8 sec)
  • 0 mR/h to 50 mR/h (2.5 sec)
  • 0 mR/h to 500 mR/h (2 sec)
  • 0 mR/h to 5 R/h (2 sec)
  • 0 mR/h to 50 R/h (2 sec )

Accuracy

Within 10% of readings between 10 % and 100 % of full scale indication on any range, exclusive of energy response

Detector

Chamber (cc Volume air ionization

349 cc


Chamber wall (phenolic)

246 mg/cm2


Chamber window (mylar)

6.6 mg/cm2


Beta slide

440 mg/cm2

Automatic features

Auto-zeroing, auto-ranging, and auto-backlight

Power requirements

Two 9 V alkaline, 200 hours operation

Warm-up time

One minute

Display LCD analog/ digital with backlight

Analog

100 element bar graph 6.4 cm long. Bar graph is divided into 5 major segments, each labeled with the appropriate value for the range of the instrument


Digital

2.5 digit display is followed by a significant zero digit depending on the operating range of the instrument. The units of measurement are indicated on the display at all times. Digits are 6.4 mm (0.25 in) high. Low battery and freeze indicators are also provided on the display

Modes

Integrate mode

Operates continuously 30 seconds after the instrument has been turned on. Integration is performed even if the instrument is displaying in mR/h or R/h


Freeze mode

Will place a tick mark on the bar graph display to hold on the peak displayed value. The unit will continue to read and display current radiation values

Environmental

Termperature range

-4 oF to 158 oF


Relative humidity

0 % to 100 % (at 140 oF)


Geotropism

< 1%

Typical energy dependence

Nitrogen gamma rays are 110% to 120% of indicated readings as determined at the University of Lowell

Dimensions (WxDxH)

10 cm x 20 cm x 15 cm (4 in x 8 in x 6 in)

Weight

1.11 kg (2.5 lb)



REGE IMAGING & CINE FILMS (P) LTD.
X


REGE IMAGING & CINE FILMS (P) LTD.
G.F. 6, Deep Shikha Building, No. 8, Rajendra Place, New Delhi - 110008, India
Mr. Gurpreet Singh Suri (Director)
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