Sound Level Meter

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Real-time third-octave analyzer

Simple to handle, compact design and wide applications.

RION's priorities in the development of hand-held meters in the field focus on speed, simple use, quality and reliability.

The RION sound level meter NA-28 is a top-rate product among sound level meters and sound analyzers. It combines innovative technology with excellent quality and simple handling.


  • Large, high-contrast color TDT display with backlight
  • Change from sound level meter to frequency analysis mode by the simple press of a button
  • Simultaneous display of third and octave spectra with a time resolution of up to 10ms
  • Supports the analysis of non-stationary sound and sound changing rapidly with time
  • Extremely large data storage volume of up to 2GB
  • Simple connection to a PC via USB
  • Extraordinarily long battery life of up to 16 hours
  • Compact design and low weight
  • Extremely short starting time after turning on
  • Extensive analysis software
  • Future-proof and suitable for simple expansion by loading application specific CF program cards for room and architectural acoustics as well as time data recording
File Description Date added File size
pdfNA-28 NA-28 Sound Level Meter
27.10.2015 19:44 1 MB