• Sound pressure level: 93 dB, 114 dB
• Accuracy class: EC 942, class 1
• Frequency: 1000 Hz for A, B, C, and D frequency weighting
• Adapter for various microphones
• Sound level accuracy: ± 0.3 dB (20°C / 68°F, 760 mm Hg)

Class I Sound Level Meter Calibrator PCE-SC 09

The PCE-SC 09 sound level calibrator is a battery-powered sound source for direct and quick calibration of sound level meters and other systems for noise measurement. With adaptors, it can be placed on ½- and ¼-inch microphones. The calibration reference is 1000 Hz. This is the reference frequency for the internationally standardized evaluation curves. This means that with this calibrator you can calibrate sound level test equipment with A-, B-, C- or D weighting filters or with linear sound levels. The calibration pressure is 94 ±0.3 dB (1 Pa) and 114 ±0.3 dB (10 Pa).

1. Membrane keypad with control elements

2. Display

3. 1/2 inch adaptor

4. Microphone aperture with calibration speaker located behind it