The Castle GA611 is a Class 1 Acoustic Calibrator from our new dBCal range and provides 3 output levels to ensure the acoustic ‘field’ calibration of your sound level meter is accurate both before and after measurements. With an excellent ‘line-of-sight’ surface the controls and display make use as easy and simple as possible.
|Available Outside the UK?||Yes|
Most Measurement codes of practice and legislative guides demand that an acoustic ‘field’ calibration of any sound level meter should be made before a series of measurements and that the accuracy is checked afterwards. The Castle dBCal Calibrators provide just that with 3 output levels, long battery-life and highly ergonomic design. Considerable care has gone into making sure that this is the only sound calibrator has its controls and displays on the same ‘line-of-sight’ surface as the sound meter.
|GA611 - Class 1||GA612 - Class 2|
|Tolerance||± 0.25dB||± 0.4dB|
|Harmonic Distortion||< 1.6%||< 3%|
|Temperature range||-10°C to 50°C||0°C to 40°C|
|Relative Humidity||25% to 90%||25% to 90%|
|Atmospheric Pressure Range||65 kPa to 108 kPa||65 kPa to 108 kPa|
|Nominal Conditions||101.3kPa (760mm Hg), 23°C & 50%RH|
|Batteries||2 x 1.5V AA Alkaline|
|Battery Life||approx. 70 hours continuous|
|Auto Power-off||1 minute (unless ‘wireless’calibration started)|
|Cavity diameter||½” microphone standard|
|Output Levels (rel. to 20μPa)||94dB, 104dB & 114dB|
|Standards||IEC 60942:2017, BS EN IEC 60942:2018, ANSI S1.40 2006|