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CENTER-392 Integrating Sound Level Meter (IEC 61672-1 class 2)



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In contrast to cheaper sound level meters, this device can measure the LEQ according to IEC61672. Most sound level meters can measure the sound level with time weighting F (fast) or S (slow).

However, in practical measurements, integrating sound levels are most important. Integrating means energy equivalent averaging. This calculation differs from a simple arithmetic average.


  • Complies with IEC 61672-1 class 2 standard
  • Measures Leq, MaxL, MinL, SPL
  • 64,000 Records Data Logger
  • PC interface
  • With Windows Software
  • AC / DC Signal Output
  • Back-lit display
  • Usb connector


  • Level Range: 30~130dB
  • Accuracy: ±1.4dB (ref. 94dB @ 1KHz)
  • Frequency Weighting: A / C
  • Time Weighting: Fast, Slow and  integrating
  • Frequency Range: 20Hz to 8KHz
  • Microphone: 1/4 inch Electret condenser microphone (outer diameter is 1/2")
  • Measuring Time: 10s, 1m, 5m,10m,15m,30m,1h,8hrs,24hrs
  • Auxiliary Outputs: AC/DC Output
  • Battery: 1.5V AA size battery x 4(Batteries are not included)
  • Dimensions: 272x83x42 mm
  • Weight: Approx.390g

Typical selfnoise is 29dB/A. (measured by us)