AcSoft
Svantek UK

SV 34B Acoustic Calibrator

The SV 34B Class 2 Acoustic Calibrator generates reference signal of 114 dB at 1 kHz and is designed to calibrate Class 2 sound level meters and noise dosimeters with 1/2 microphones. Unlike many others, the robust housing of the calibrator gives comfort of a secure grip to its users.

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Reference piezoresistive sensor for monitoring generated level, pressure and temperature sensors for measurements of atmospheric conditions and a microprocessor system controlling the operation of the calibrator. Sinusoidal waveform of 1 kHz frequency is digitally generated and feeds the loudspeaker. Sampled signal from the reference piezoresistive sensor indicates the level of currently generated signal in a feedback loop. On the basis of information about the level of the signal, actual values of pressure and temperature, microprocessor adjusts amplification of the loudspeaker signal in order to produce appropriate sound pressure level in the calibrator’s chamber.

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