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ST-120 Sound Level Calibrator

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ST-120 Class 1 Sound Level Calibrator is a highly accurate sound meter calibrator which allows the user to calibrate his/her own instruments without the need of a third party. It fits 1/2" microphones including those of the ST-107S and ST-109. Calibration is obviously very important and users can have confidence in the ST-120 because it conforms to the IEC 60942 Class 1 accuracy standard and is therefore in the upper tier of the industry’s rating system.

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Features & Downloads
Features

  • Sound pressure levels : at 94dBand 114dB.

  • For 112"condenser microphone calibration.

  • Low battery indication.

  • Harmonic waves distortion ±3%.

  • Output feedback detection

Technical Specifications
Technical Specifications

  • Standard: IEC 60942 (2003) and ANSI S1.40 (1984) Class 1

  • Sound Pressure Levels: 94dB and 114dB (reference of 2x10-5Pa)

  • Accuracy: ±0.3dB at 94dB, ±0.5dB at 114dB

  • Frequency: 1000Hz ± 1%

  • Distortion: ≤3%

  • Battery: 9V 006P or |EC6F22 or NEDA 1604

  • Dimension: ⌀ 62 x 134 mm

  • Weight: about 350g (included 1/2” adaptor and 9V battery)

  • Stable Times: 20s

  • Operating Temperature: 0ºC ~ 40ºC (32ºF ~ 104ºF)

  • Storage Temperature: 0ºC ~ 60ºC (32ºF ~ 140ºF)

  • Humidity: < 90%

  • Atmospheric Pressure: 64KPa ~ 100KPa

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