供应深圳BK4231音校准器传声器校正器

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百度推荐深圳声仪科技有限公司供应深圳BK4231音校准器传声器校正器，94DB传声器校准器，传声器1/2英寸，1/4英寸，1/8英寸.
FEATURES:
❍ Conforms to IEC942 (1988) Class 1 and ANSI
S1.40–1984 (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
STANDARDS SATISFIED:
IEC 942 (1988), Sound Calibrators, Class 1
ANSI S1.40–1984 (R 1997), Specifications for
Acoustic Calibrators
NOMINAL SOUND PRESSURE LEVEL:
94.0 dB ±0.2 dB or 114.0 dB ±0.2 dB re 20 mPa
at reference conditions
FREQUENCY: 1kHz ±0.1%
SPECIFIED MICROPHONE TYPES:
(Conforms to IEC 942 Class 1)
Brüel &Kjær (and similar types) 1² and 1/2², 1/4²,
1/8² with adaptors
本公司地址：广东深圳深圳市宝安区海城路白金假日