Class 1 sound level meter

The Norsonic Nor140 is a class 1, type approved integrating sound level meter.

A sound and vibration analyser, used for a variety of functions


  • Precision integrating sound level meter to IEC 61672 class 1
  • Handheld real-time 1/1- or 1/3-octave frequency analyser (0,4Hz-20kHz)
  • Measurement of A-weighted levels simultaneously with either C- or Z-weighted levels
  • Parallel detection of SPL, Leq, Lmin, Lmax, L E and Lpeak
  • 120dB dynamic range giving a “one-range” instrument
  • Measures Lpeak levels up to 140dB
  • Parallel detection of F, S and I time constants
  • USB 2.0 and High-speed RS-232 serial interface (115 kbaud)
  • SD memory card and large high speed internal memory
  • Sound recording in 8, 16 or 24 bit format with 12 or 48kHz sampling
  • Up to 90 sec high, contrast, graphical audio recording pre-trigger
  • High-resolution graphical backlit display
  • Manual or automatic storage of results
  • Automatically repeated measurements with clock synchronization
  • Pause/Continue function with back erase feature
  • Results displayed as dB or linear values
  • Numerical printouts
  • AC output signal
  • Signal generator
  • Windscreen correction
  • Noise floor correction
  • Support for IEPE sensors
  • NC, NR and RC rating
  • Multiple language selection
  • Moving Leq​


Product data Norsonic Nor140 - sound level meter

Nor140 - type approval