CENTER 326 - Sound Level Calibrator (94dB/114dB) and CENTER 327 - Sound Level Calibrator (125Hz/250Hz), By many regulations, sound level meters need to verify their accuracy before and after measurements. Our sound calibrator series are designed to fulfill this customer needs. These calibrators provide different sound level at different frequencies to fit different regulations and they are perfect for periodical check on their sound level meters.


  • Features:
  • 94dB and 114dB sound calibrator at 1KHz (Center 326)
  • 94dB sound calibrator at 125Hz & 250Hz (Center 327)
  • Accurate and simple to use
  • Fit 1 inch and 1/2 inch microphones
  • Low battery indicator
  • IEC 60942(2003) Class 2, Ans1.40-1984





  • Output Sound Pressure Levels: 114dB and 94dB re 20 uPa under refrence conditions.
    Output Frequency: 1000Hz±2%
  • Total Harmonic Distortion: <4%
  • Reference Condition:
    - Temperature 23°C (73°F)
    - Static press 103hpa
    - Relative humidity 50%
  • Accuracy of Sound Pressure Level: Understated reference environment conditions ±0.5dB
  • Operate: Green LED indicator
  • Low battery: Red LED indicator


Standard Accessories:

Battery, Operation Manual, Carrying Case,1/2 inch microphone adapter



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