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Type 4954 Microphone

Type 4954 Microphone

TYPE 4954

1/4インチフリーフィールドマイクロフォン

TYPE 4954

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マイクロスコープセット4954-B isは、レーザー溶接されたステンレス製ダイアフラムとステンレス製保護グリッドにより、過酷な環境にも耐える優れた測定性能を発揮します。

高周波測定
費用対効果の高い測定

1/4-inch Prepolarized Free-field Microphone Type 4954

Data Sheets

English

TYPE 4954
Standard	IEC 61094
Sound field	Free field
Polarization voltage	0V
Sensitivity	3.16 mV/Pa
Lower limiting frequency	4 Hz
Higher limiting frequency	100 kHz
Inherent noise	35 dB(A)
Upper limiting of dynamic range	165 dB
Diameter	1/4 inch
Venting	Side
Minimum Temperature	-40 °C
Maximum Temperature	150 °C
Minimum Temperature	-40 °F
Maximum Temperature	302 °F

CAPABILITIES

Excellent amplitude and phase matching over wide ranges of temperature and humidity phase response
Excellent long-term stability through artificial aging and clean room assembly guarantee excellent long-term stability and low noise even in harsh environments
Side vented for pressure equalization.
The microphone does not need an external polarization voltage, thus enabling the use of inexpensive 2-wire system (CCLD) input.

Prepolarized Free-field Microphone Type 4954 has been optimised for a flat, free-field response and is suited for measurements far beyond the audible range. Due to its wide frequency range, the frequency response in the audible range is typically within ±1 dB.

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