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4954 系列

1/4英寸自由场传声器,预极化

专为在 4 Hz 至 100 kHz 频率范围内进行高声级和高频测量设计的自由场传声器。

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4954 系列

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4954型是一款1/4英寸预极化自由场传声器,专为高声级和高频测量而设计。

使用激光焊接的不锈钢振膜和不锈钢保护网,使这款传声器能够承受恶劣环境。

  • 高频测量
  • 高声级测量
  • 经济高效的测量

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FAMILY 4954
Standard IEC 61094, IEC 61672
Sound field Free field
Polarization CCLD, Classical
Sensitivity 2.8 mV/Pa
Lower frequency 16 Hz, 50 Hz, 3 Hz
Higher frequency 80 kHz, 22 kHz
Lower dynamic range 40 dB, 34 dB
Higher dynamic range 159 dB, 164 dB
Diameter 1/4 inch
Venting Side
Minimum Temperature -20 °C
Maximum Temperature 80 °C, 100 °C
Minimum Temperature -4 °F
Maximum Temperature 176 °F, 212 °F
Output signal (connectivity) Passive

This microphone consists of Microphone Type 4954 laser welded to a ¼" microphone preamplifier. 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 transducers can be connected to any CCLD input and support IEEE P1451.4 V0.9 TEDS (Transducer Electronic Data Sheet). The unit also contains TEDS, which means that information about the serial number, type and sensitivity is stored within it.

BENEFITS OF USING A MICROPHONE-PREAMPLIFIER SET:

  • Better stability and precision. Because the unit is assembled in clean-room facilities, there is no contamination.
  • Ease of use. Your analyzer front-end and software will automatically detect the type number, serial number and sensitivity because of the built-in TEDS technology. There is no need to enter this manually for every channel. 
  • Calibration integration. The TEDS technology means the microphone is automatically detected and identified by your data acquisition software, allowing it to be easily integrated with your calibration database.
  • Fewer errors. As your data acquisition software automatically knows the microphone type, serial number and sensitivity, manual inputs are greatly reduced – reducing human errors.