<强>1/2"麦克风风,预极化
自由场麦克风,用于户外和工业环境测量以及频率分析测量,频率范围从2 Hz到20 kHz。
Ul.TYPE 4940
预极化自由场½英寸麦克风 TYPE 4940与便携式仪器一起使用时具有显著优势。 它特别适用于户外和工业环境测量。它还适用于IEC 60651 1型测量和频率分析测量。
麦克风能够经受IEC 68 232 1米跌落测试。
灵敏度可在250Hz使用活塞式电话Type 4228与½英寸适配器DP 0776进行校准。执行器响应可以使用执行器UA 0033测量。自由场响应可以通过将特定于类型的自由场校正添加到执行器响应中获得。
| Prepolarized Free-field 1/2-inch Microphone - Type 4940 | Data Sheets | English |
| Standard | IEC 61094 |
| Sound field | Free field |
| Polarization voltage | 0V |
| Sensitivity | 50 mV/Pa |
| Lower limiting frequency | 6.3 Hz |
| Higher limiting frequency | 20 kHz |
| Inherent noise | 14.6 dB(A) |
| Upper limiting of dynamic range | 146 dB |
| Diameter | 1/2 inch |
| Venting | Rear |
| Minimum Temperature | -30 °C |
| Maximum Temperature | 150 °C |
| Minimum Temperature | -22 °F |
| Maximum Temperature | 302 °F |
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.