Castle 01GA611 Sound Level Calibrator, ±0.25 dB Accuracy, 94dB Output, 0.5in Microphone, With RS Calibration

Most 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 IEC60942:2018

3 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 diameter

The 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