| Detection Principle | 
            Diffusion chamber with silicon diode | 
        
        
            | Measurement range | 
            20 Bq/m3 ... 10 MBq/3 | 
        
        
            | Sensitivity | 
            3 cph at 100 Bq/m3 | 
        
        
            | Dose calculation | 
            Based on user-settable equilibrium factor and dose conversion factor (standard values are preset) | 
        
        
            | Dose range | 
            0 – 1 Sv | 
        
        
            | Measuring cycle | 
            Adjustable from 1 min to 12 hrs | 
        
        
            | Storage capacity | 
            8,500 data sets (ca. from 6 to 4,250 days, depending on set measuring cycle) | 
        
        
            | Diffusion time constant | 
            Typically 1 … 2 hrs (user adjustable smoothing factor) | 
        
        
            | Battery life (rechargeable) | 
            
             up to 6 months (rechargeable via USB) 
             | 
        
        
            | Interface | 
            
             USB, cable incl. charging unit 
             | 
        
        
            | Additional sensors | 
            
             Air temperature, air pressure, air humidity, tamper detection (relocation) 
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            | Display | 
            
            
            6 digit LCD + 5 digit alphanumeric, backlight 
             
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            | Operation range | 
            
            
            - 20 °C - + 50 °C, 5% - 90% relative humidity 
             
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            | Dimensions / Weight / Housing | 
            
            
            108 mm x 68 mm x 30 mm / 165 g / aluminium 
             
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