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             Environmental Survey Meter RadAlert 100 
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             "Product PDF" 
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             Specifications: 
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             Sensor 
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             Halogen-quenched Geiger-Müller detector 
            with mica end window (LND712); end window 
            density is 1.5-2.0 mg/cm². Side wall 0.3 mm 
            #446 stainless steel. 
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             Display 
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             4-digit liquid crystal display with mode 
            indicators 
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             Operating range 
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             0.01-1100 mSv/hr (Cs-137), 0-3500 cps; 
            0.001-110 mR/hr (Cs-137); 0-350,000 cpm; 
            Total: 9,999,000 counts 
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             Calibration 
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             Cesium 137 (662 keV gamma) 
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             Sensitivity 
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             100 cpm/mSv/hr referenced to Cs-137 
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             Accuracy 
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             ±10% typical; ±15% max 
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             Alert 
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             User-adjustable alert level is set using three 
            buttons 
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