Center Technology | Series 327 Sound Level Calibrator

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.


  • 94dB and 125Hz sound calibrator at 250Hz
  • 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: 94dB re 20uPa under reference conditions
  • Output Frequency:125Hz2%, 250Hz2%
  • Total Harmonic Distortion: <4%
  • Reference Condition:
    • Temperature 23C (73F)
    • Static press 103hpa
    • Relative humidity 50%
  • Accuracy of Sound Pressure Level: Understated reference environment conditions 0.5dB
  • Battery Test:
    • Operate: Green LED indicator
    • Low battery: Red LED indicator
  • Battery: 9V x 1
  • Dimensions: 113 x 63 x 44mm
  • Weight: 170g

Standard Accessories:

  • Battery, operation manual, carrying case, ½" microphone adapter