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 &Kj?r (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
