ALAT UKUR KEBISINGAN

Sound Level Meter DB-100 Microphone : Prepolarised electret Condenser : 20 mV/ Pa Nominal Sensitivity Standard : IEC 61672-1 Class2 IEC 60651 Class 2 / IEC 60804 Class 2 Parameters : LA and L Aeq Other parameters : LAFmax, LAFmin, LASmax, LASmin Frequency weighting : A Measuring range : 30 - 130 dB Time waighting : Slow , Fast Data integration time for LAeq : From 1s to 15 min Overload Indicator : Detected at the peak SPL Backlighted display : Graphic 128 x 64 pixels Adjustable contrast Resolution : 0, 1 dB Reference direction : Microphone axis Reference range : 30 to 130 dB Reference level : 94 dB Reference frequency : 1000 Hz Power supply : 3 AAA batteries Automatic Check Acoustic Signal : 90 dB to 1000Hz Frequency : 1000 Hz ï ¿ ½ 5% Level : 90 dB ï ¿ ½ 1dB Stability : < 0, 5 dB Automatic power supply : When being connected to the unit Dimensions : 140 x 28 x 25 mm ( without cable) Weight : 50 g
sound level meter