320Sound Lever Meter

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发布时间：2008-03-02

CENTER 320 Sound Lever Meter            

IEC 651 Type II 
Level Range Display 
Simultaneous MAX  MIN Measurement 
4 digits Display 
Auto Power Off 
AC DC Signal Output 
Resolution 0.1 dB update cycle 0.5 s 
Microphone: 
    Electorate condenser microphone
Accuracy: 
    ±1.5 dB ( ref 94dB @1KHz )
Level Range: 
     Lo = 30 ~ 80 dB
     Med = 50 ~ 100 dB
     Hi = 80 ~ 130 dB
Frequency Weighting: 
    A , C
Time Weighting: 
    Fast , Slow
Auxiliary Outputs:
   AC output
               Output voltage: 1Vrms (at full scale)
               Output impedance: Approx:600Ω
    AC output
               Output voltage: 10mV / dB
               Output impedance: Approx:50Ω
Dynamic Range: 
    50 dB
Frequency Range: 
    31.5Hz to 8KHz
Battery Type: 
    9V Battery NEDA 1604, IEC 6F22, JIS 006P
Battery Life: 
    50 hours ( with alkaline battery )
Operation Temp.: 
    0°C~ 40°C(<80% R.H.) 9V Battery, Carrying Case,  Calibration Screwdriver,  Windscreen