Castle 01GA611 Sound Level Calibrator, ±0.25 dB Accuracy, 94 dB, 104 dB, 114 dB Output, 1 - 2in Microphone

Castle 01GA611 Sound Level Calibrator 94 dB, 104 dB, 114 dBMost Measurement codes of practice and legislative guides demand that an independent acoustic calibration of any sound level meter should be made before and after a series of measurements and the Castle dBCal Calibrators provide just that facility. They all produce a calibration tone of 1kHz at levels of 94dB, 104dB or 114dB at the microphone. They are designed to fit standard 1/2”; microphones. These calibrators fully comply with IEC60942:20183 output Levels – 94dB, 104dB and 114dB Fully compliant with IEC60942:2018 Output frequency of 1KHz Temperature and pressure compensated Simple operation Compatible with Castle auto-cal feature Tough ABS plastic case Works on 2 x AA batteries 70-hour battery life. ”; cavity diameterThe dBCal (GA611) is a class 1 product according to IEC60942:2018, with a tolerance of +/- 0.25dB and distortion of less than 1%.Class 1 to IEC60942:2018 Less than 1% harmonic distortion Pluss or minus 0.25dB tolerance