Inspector
The Inspector is a small handheld microprocessor based instrument which offers excellent sensitivity to low levels of alpha, beta, gamma, 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.

Specifications
  • Detector: Halogen-quenched uncompensated GM tube with thin mica window, 1.4-2.0 mg/cm2 areal density. Effective diameter of window is 45 mm (1.75 in.).
  • Display: 4 digit liquid crystal display with indicators
  • Averaging Periods: Display will update every 3 seconds. At low background levels, the update is the moving average for the past 30 second time period. Timed period for moving average decreases as the radiation level increases.
  • Operating Range: mR/hr- .001 (1ěR) to 100 mR/hr; ěSv/hr- .01 to 1000; CPM- 0 to 300,000; CPS- 0 to 5000; Total/Timer- 1 to 9,999,000 counts
  • Accuracy: mR/hr + 15% from 0 to 50 mR/hr; mR/hr + 20% from 50 to 100 mR/hr; CPM + 15% from 0 to 130,000 CPM; CPM + 20% from 130,000 to 300,000 CPM; (Referenced to Cs-137)
  • Sensitivity to Common Isotopes: Typical GM tube efficiency for 4 Pi geometry at contact
  • Gamma Sensitivity: 3500 CPM/mR/hr referenced to Cs- 137; Smallest detectable level for 1-125 is .02 ěCi at contact
  • Timer: Can set 1 minute sampling periods from 1 to 10 minutes. 10 minute sampling periods 10 to 60 minutes; 1 hour sampling periods from 1 to 24 hours
  • Count Light: Red LED flashed with each radiation event
  • Size: 150 x 80 x 30 mm (5.9" x 3.2" x 1.2")
  • Weight: 225 grams (8 oz) including 1 nine volt battery
Beta Isotopes
Energy
Efficiency
C-14
49 keV Avg. 156 keV
5.3%
Bi-210
390 keV Avg. 1.2 MeV max.
32%
Sr(Y)-90
546 keV and 2.3 MeV
38%
P-32
693 keV Avg. 1.7 MeV max
33%
Alpha
 
 
AM-241
5.5 MeV
18%

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