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BK4231聲學校正器

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    • 特點: - 符合EN/IEC60942 (2003)和ANSI S1.40 – 1984 標準 - 校正精度±0.2 dB - 94 dB SPL和114 dB SPL2種校正電平 - 1 kHz校正頻率 - 適用Brüel &Kjær 1″和1/2 ″測量麥克風 (1/4"和 1/8″需要選配適配器) FEATURES: ❍ Conforms to IEC942 (1988) Class 1 and ANSIS1.40–1984 (R1997) ❍ Robust pocket-size design with highly stable level and frequency ❍ Calibration accuracy 0.2 dB ❍ 94 dB SPL, or 114 dB SPL for calibration in noisy environments ❍ Extremely small influence of static pressure ❍ Sound pressure independent of microphone equivalent volume ❍ 1 kHz calibration frequency for correct calibration level independent of weighting networks ❍ Fits Brüel &Kjær 1″and 1/2 ″microphones (1/4″and 1/8″microphones with adaptor) ❍ Switches off automatically when removed from the Microphone USES: ❍ Calibration of sound level meters and other sound measurement equipment

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