Bruel & Kjaer 4231: Sound Calibrator

รหัสสินค้า : Bruel & Kjaer 4231

Download Technical Datasheet

For more information contact : Pin Pinkaew Tel. 09-6989-8228

* Warranty 1 year. (Machine only) * Please check prices again.

Sound Calibrator Type4231 is 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/IEC60942 (2017) Class 1, and ANSIS1.40-2006. 

Features

• Conforms to EN/IEC60942 (2017) Class 1, and ANSIS1.402006
• Robust, pocket-sized design with highly stable level and frequency
• Calibration accuracy ±0.2dB
• 94dB SPL or 114dB 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 Brüel&Kjær 1 microphones (1/2, 1/4 and 1/8 microphones with adaptor)
• Switches off automatically when removed from the microphone