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概述ND2型精密声级计和倍频程滤波器是一种全晶体管化便携式噪声测量和分析仪器,仪器性能符合国际电工委员会(IEC)179号关于精密声级计的推荐标准和225号关于倍频程滤波器的推荐标准。它可用来测量和分析环境噪声及机器、车辆、电动机等噪声;也可用来测量和分析隔声系数和音响设备效果;亦可用来校准听力计。如果将电容传声器换用加速度计、并配用积分器,可以测量和分析振动的加速度、速度和振幅。
Overview The Model ND2 Precision Sound Level Meter and Octave Range Filters are all-transistorized portable noise measurement and analysis instruments that conform to International Electrotechnical Commission (IEC) 179 recommendations for precision sound level meters and 225 Recommended frequency filter. It can be used to measure and analyze environmental noise and noise of machines, vehicles, motors, etc .; it can also be used to measure and analyze the sound insulation coefficient and sound effects; also can be used to calibrate the audiometer. If the capacitor microphone with accelerometer, and with the integrator, you can measure and analyze the vibration acceleration, velocity and amplitude.