1“自由场传声器，外部极化
用于低噪声、实验室和声压测量（IEC 61672 1级）的自由场传声器，频率范围为 2.6 Hz 至 18 kHz。
4145 型
4145型是一款1英寸自由场传声器，专为低声级和实验室自由场测量而设计。4145型的规格也使其适用于根据IEC 61672 1级标准进行声压测量。
当配备随机入射校正器UA-0055时，4145型也可以用于随机入射测量。
使用活塞发生器4228在 250 Hz 校准 4145型 的灵敏度，或使用声级校准器4231在 1 kHz 校准。
可以使用静电激励器 UA 0023 测量压力场响应。
| 1-inch Free-field Microphone - Type 4145 | 數據表 | English |
| Standard | IEC 61094 |
| Sound field | Free field |
| Polarization voltage | 200V |
| Sensitivity | 50 mV/Pa |
| Lower limiting frequency | 2.6 Hz |
| Higher limiting frequency | 18 kHz |
| Inherent noise | 10 dB(A) |
| Upper limiting of dynamic range | 146 dB |
| Diameter | 1 inch |
| Venting | Rear |
| Minimum Temperature | -30 °C |
| Maximum Temperature | 100 °C |
| Minimum Temperature | -22 °F |
| Maximum Temperature | 212 °F |
| Product Code | Description |
|---|---|
UA-0207---
|
Windscreen for 1"Mic, 90mm Diameter |
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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.