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The Castle GA612 is an Acoustic Calibrator from our new dBCal range provides 3 output levels to ensure 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.
| Brand | Castle Group |
|---|---|
| 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 | |
