Nor131

Class 1 sound level meter


The Nor130 Series of Sound Level Meters are designed and manufactured to the latest sound level meter standards and comprises two products.
The Nor131 is a Class 1 (precision) instrument whilst the Nor132 is designed in accordance with the less accurate Class 2 requirements.

Features:

  • Single measurement range
  • Extremely simple operation
  • Parallel LAeq and LCpeak
  • Real-time octaves
  • Large internal memory
  • Clock synchronized measurements
  • Single measurement range
  • USB interface
  • Allows use of microphone extension cable
  • Large back-lit display
  • Complies to IEC and ANSI standard
  • 1/1 octave (optional)
  • 1/3 octave (optional)
  • Statistical analysis (optional)
  • Level versus time (optional)
  • Speech Transmission Index (STIPA) calculation (optional)
  • Reverberation time calculation (optional)

Specifications:

  • Class 1 according to IEC60651, IEC60804, IEC61672, IEC61260, ANSI S1.4, ANSI S1.11, and ANSI S1.43.
  • Measured Parameters: Time weighting functions: Fast, Slow and Impulse.
  • Spectral weighting functions: Simultaneously measurement of A and C or Z-weighting. Additionally the 1/1 octave real time filters covering all bands from 8 Hz to 16K Hz (option 1) or 1/3-octave covering all bands from 6,3Hz to 20kHz (option 4).
  • Statistical calculations: 7 fixed percentiles L1%, L5%, L10%, L50%, L90%, L95%, and L99% plus one user defined value (f.ex. L0.1%). The statistical calculation is performed in real time within each frequency band if the filter option 1 is installed.
  • Measurement range: One range covering 120dB without any range adjustments. Self noise measured with microphone: 17dBA
  • Battery / power consumption: 4 IEC LR6 (AA sized). Separate display showing battery voltage and run time on battery since last battery change. Nominal operation time on one set of batteries is >8 hours. Nominal 11-15V external DC voltage. If external supply drops below 9 volt, it switches uninterrupted to internal batteries.
  • Datastorage Datatransfer: 5MB internal memory equals to 2.5 million values which typically holds all measured functions from up to 10,000 individual measurements.
  • Data transfer via USB 2.0 interface.
  • AC output, 100mV for full scale deflection.
  • Depth: 29 mm, Width: 74 mm
  • Weight incl. batteries: 380 g

Downloads:

Product data Nor131 and Nor132 - sound level meter

Nor131 type approval