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Survey Meter [Inspector]

The Inspector is a microprocessor controlled radiation measuring instrument which offers excellent sensitivity to low levels of alpha, beta, gamma and x-rays. The digital readout is displayed with a red count light and audible beep, providing instant indications of the radiation level. Other benefits include an adjustable timer and external calibration controls

 

Features

  • Monitors alpha, beta, gamma, and x-ray radiation
  • Range: 0-300,000 cpm
  • 4-digit LCD readout
  • Red LED count light
  • Audible beeper (can be switched off)
  • External calibration controls
  • Adjustable timer with:
  • minute sampling periods from 1 to 10 minutes
  • 10-minute sampling periods from 10 to 60 minutes
  • hour sampling periods from 1 to 24 hours
  • Operates 200 hours on 9V battery

 

Specifications

Detector

Halogen-quenched uncompensated GM tube with thin mica window, 1.4-2.0 mg/cm2 area density.

Window

1.75" (45 mm) effective diameter

Display

Four-digit liquid crystal display with indicators

Averaging Periods

Display will update every three seconds; at low background levels, the update is the moving average for the past 30-second time period; time period for moving average decreases as radiation level increases

Gamma Sensitivity

3500 cpm/mR/hr (referenced to Cs-137); smallest

detectable level for I-125 is .02 μCi at contact

Operating Range

mR/hr: 0.001 (1μR) to 100 mR/hr

μSv/hr: 0.01 to 1000

CPM: 0 to 300,000

CPS: 0 to 5000

Total/ Timer: 1 to 9,999,000 counts

Accuracy (Referenced to Cs-137)

mR/hr ± 15% from 0 to 30 mR/hr, ± 20% from 30 to 50 mR/hr

CPM ± 15% from 0 to 100,000 cpm, ± 20% from 100,000 to 300,000 cpm

Timer

Can set 1-minute sampling periods from 1 to 10 minutes, 10-minute sampling periods from 10 to 60 minutes, 1-hour sampling periods from 1 to 24 hours

Count Light

Red LED flashes with each radiation event

Audio Indicator

Internally mounted beeper (can be switched off for silent operation)

Anti-Saturation

Meter will hold at full scale in fields as high as 100 times the maximum reading

Power Requirements

(1) 9-volt alkaline battery

Battery Life

Typically 200 hours at normal background radiation levels

Dimensions

15 x 8 x 3 cm

Weight

300 grams (without battery)