4964 ½英寸次声传声器
4964型设计用于要求高灵敏度次声传声器的高精度声学测量。经过预极化,4964型可与CCLD和经典的前置放大器一起使用。
使用场景
一般噪声测量
风力发电机测量
声爆测量
型号 | 4964 |
Capacitance | 14 pF |
Diameter | 0.52 |
Dyn. range | 14.6 – 146 dB |
Freq. range | .02 – 20000 Hz |
Inherent noise | 14.2 dB A |
Lower limiting frequency -3dB | 0.02 Hz |
Optimised | Free field |
Polarization | Prepolarized |
Polarization voltages | 0 V |
Sensitivity | 50 mV/Pa |
Pressure coefficient | -0.01 dB/kPa |
Temperature range | -30 – 150 ℃ |
Temperature coefficient | -0.006 dB/ºC |
Venting | Rear |
Weight | gram |
Sound field | Free-field |
Input type | CCLD IEPE |
Microphone type | Free field |