ST-120 Sound Level Calibrator
According to standard: ANSI S1.4 - 1984 and IEC 942 1988 class 2
Application
The ST-120, Sound Level Calibrator, is used for the calibration of the pressure sensitivity of the microphone and sound level measuring equipment.The design is based on a feedback arrangement to ensure
a high stable sound pressure level. The performance is very stable; it does not required for the revision to the microphone equivalent volume. conforms to the standard of IEC60942 (2003) Class 1.
Features
- Setting standard sound levels at 94dB and 114dB.
- ½” microphone adapters provided.
- With low battery indictor.
- Harmonic waves distortion ±3%.
- Output feedback detection.
Specifications
| Standard | IEC 60942(2003) and ANSI S1.40. (1984) |
| Sound Pressure Levels | 94 and 114Db.(reference of 2x10-5Pa) |
| Accuracy | 94 ± 0.3dB and 114 ± 0.5dB |
| Frequency | 1000Hz ± 1%. |
| Distortion | ≤ 3 % |
| Dimension | φ62x134mm |
| Weight | about 350g (included 1/2" adaptor and 9V battery) |
| Stable Times | 20s. |
| Humidity | ＜90% |
| Atmospheric Pressure | 65KPa~100KPa |
