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 2×10-5Pa)
 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

ACCESSORIES

  • User’s Manual
  • 9V battery
  • Carrying case

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