<强>1/8"麦克风风，外部极化
压力场麦克风，专为在狭窄空间进行频率范围为 6 Hz 至 140 kHz 的甚高频测量而设计。
TYPE 4138
4138型专为高级别和甚高频测量和在密闭空间中的测量而设计。TYPE 4138 是外部极化的，必须与经典前置放大器一起使用。
| Code | 灵敏度 |
|---|---|
| -4138-A-015- | 0.56 mV/Pa |
| -4138-C-006- | 0.8 mV/Pa |
| -4138-L-006- | 0.8 mV/Pa |
| 1/8-inch Pressure-field Microphone Type 4138 | Data Sheets | English |
| Standard | IEC 61094 |
| Sound field | Pressure field |
| Polarization | Classical |
| Sensitivity | 0.56 mV/Pa, 0.8 mV/Pa |
| Lower frequency | 6.5 Hz |
| Higher frequency | 140 kHz |
| Lower dynamic range | 52.2 dB |
| Higher dynamic range | 168 dB |
| Diameter | 1/8 inch |
| Venting | Side |
| Minimum Temperature | -30 °C |
| Maximum Temperature | 100 °C |
| Minimum Temperature | -22 °F |
| Maximum Temperature | 212 °F |
| Output signal (connectivity) | Passive |
The unit is assembled in a clean-room environment and sealed together, after which it is assigned one single type number and one single serial number. This means that the combined unit has better precision and long-time stability, and is handled as one complete unit.
The unit also contains TEDS, which means that information about the serial number, type and sensitivity is stored within it.
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.
