Sound Calibrators

The Rion NC-74 Sound calibrator generates a constant sound pressure of 94 dB at 1kHz. The Rion NC-74 is designed to be a compact and lightweight unit which requires no atmospheric pressure compensation. This is done by incorporating a sensor which detects the atmospheric pressure which is in turn detected by the CPU which controls the signal amplitude. This eliminates the need for any pressure compensation. The Rion NC-74 Sound Calibrator is suitable for 1a and A a microphones Rion NC-74 Sound Calibrator complies with the IEC 60942:2003(JIS C 1515:2004) Class LS/C Features: a c Allows for calibration with accuracy of + 0.3 dB a c Usable in wide temperature and humidity range. a c Usable as a standard sound source in laboratories or as a calibration sound source for sound level meters on site.