The SV 33B Class 1 Acoustic Calibrator is a top-of-the-line device designed to provide precise and accurate calibrations for Class 1 and Class 2 sound level meters and dosimeters with 1/2 microphones. This calibrator produces a defined acoustic pressure of 114 dB at 1 kHz, ensuring that sound level measurements are accurate and consistent.

The SV 33A features robust housing for a comfortable and secure grip, as well as a microprocessor-controlled signal source with digital static pressure and temperature compensation for excellent stability in a wide range of ambient temperatures and humidity levels. This calibrator operates with AAA batteries and does not require any adjustments by the user. Each calibrator is also provided with a statement of calibration for added confidence in accurate measurements. With a tolerance of +/- 0.3 dB SPL and +/- 0.2% in frequency, the SV 33A Class 1 Acoustic Calibrator is a reliable and trusted tool for professionals in the field of occupational health and metrology.