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Sound Level Meter Larson Davis 831 Rental

Measure Noise Levels and Report Noise Data

Larson Davis Sound Level Meter Model 831 meets IEC 61672-1:2013, ANSI S1.4-2014 Class 1 standards. This versatile meter performs the functions of several instruments, putting the combined features of a precision Class 1 sound level meter, environmental noise analyzer, personal noise dosimeter, and a real-time frequency analyzer in the palm of your hand.

Highlights

  • ANY LEVEL noise level display
  • User programmable run modes
  • Six user selectable statistics
  • Threshold exceedance data
  • Community noise calculations (Lden, CNEL)

Applications

  • Environmental Noise Assessment
  • Room and Building Acoustics
  • NVH Correlation
  • Workplace Noise Exposure Measurement
  • Sound Power Measurements
  • Product Noise Testing
  • Construction Noise Measurements
  • Community and Urban Noise Measurements

Specifications

View complete specifications from manufacturer

Internal Memory2 GB standard
Dynamic Range120 dB (20 – 140 dB standard range)
Frequency WeightingsA, C, and Z (simultaneous)
Time WeightingsSlow, Fast, and Impulse
Power Supply4 AA batteries provide over 16 hours of operation

Capabilities

  • User selectable multi-parameter Data Logging (as fast as 20 ms)
  • Measurement History allows longer term parameters to be stored simultaneously with Data Logging (e.g., Ln and histogram tables)
  • Exceedance History with programmable length and triggers
  • Built-in signal generator for room acoustics testing
  • Multiple setup configurations can be stored on each meter
  • Outdoor kits and options available for unattended monitoring
  • G4 Software allows for easy meter setup and data download
  • Real Time 1/1 & 1/3 Octave Frequency Analysis (*)
  • Advanced .wav sound recording for sound identification or post-processing (*)
  • Dynamic Triggering triggers .wav recording based on varying background level (*)
  • FFT real time analysis, to 1600 lines (*)
  • Accelerometer connectivity/ICP® power for vibration measurements (*)

    • (*) Indicates an available option

Internal Storage Capacity

  • 100 million point Leq Time History (0.1 dB resolution)
  • 30 million 1/1 octave spectra
  • 12 million 1/3 octave spectra
  • 2 million full parameter Time Histories (over 40 sound metrics plus 1/1 and 1/3 Leq, SPL, min and max)
  • 400,000 Standard Measurement Histories (including 1/1, 1/3 octave Leq, max, min, and Ln tables)
  • 330,000 Full Measurement Histories (includes standard plus weather, GPS data, and Spectral Ln tables)

Standards Met and Pattern Approvals / Type Approvals

OrganizationStandard
ANSIS1.4-1983 (R 2006) plus Amendment S1.4A-1985 (R 2006) Type 1
S1.43-1997 (R 2007) Type 1
S1.11-2004 Class 1
S1.25-1991 Class 0
ASTME2235 (2004) Standard Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods
IEC61672-1 Ed. 1.0 (2002-05) Class 1, Group X 60651 Ed 1.2 (2001) plus Amendment 1 (1993-02) and Amendment 2 (2000-10) Type 1, Group X
60804 (2000-10) Type 1, Group X
61010-1 Ed. 2.0 (2001-02)
61260 Ed. 1.0 (1995-08) plus Amendment 1 (2001-09), 1/1 and 1/3-octave Bands, Class 0
61252 Ed. 1.1 (2002-03) Type 1 Group X, all filters
ISO3382-1:2006 Measurement of Room Acoustic Parameters Part 1: Performance Rooms
3382-2:2008 Measurement of Room Acoustic Parameters Part 2: Reverberation Time in Ordinary Rooms
Pattern ApprovalsLNE
BEV
PTB