Sound Calibrator B&K 4231

A handy, portable sound source for calibration of sound level meters and other sound measurement equipment. The calibrator is very robust and stable, and conforms to EN/IEC 60942 (2017) Class 1, and ANSI S1.40-2006.

Description

 Features
• Conforms to EN/IEC 60942 (2017) Class 1, and ANSI S1.40-2006
• Robust, pocket-sized design with highly stable level and frequency
• Calibration accuracy ±0.2 dB
• 94dB SPL or 114 dB SPL for calibration in noisy environments
• Extremely small influence of static pressure and temperature
• Sound pressure independent of microphone equivalent volume
• 1kHz calibration frequency for correct calibration level independent of weighting network
• Fits HBK 1″ microphones (1/2″, 1/4″ and 1/8″ microphones with adaptor)
• Switches off automatically when removed from the microphone

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