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Home > Rental > Larson Davis SoundAdvisor 831C Sound Level Meter Overview

Larson Davis SoundAdvisor 831C Sound Level Meter Overview

The Larson Davis 831C SoundAdvisor Sound Level Meter, the most recent platform from LD, provides a powerful, single channel system for a wide variety of tasks, including Environmental Noise, Workplace Noise Safety, and Product Noise Studies.

Please use the navigation below and at left to view:

Key 831C Hardware Features Include:

  • 2GB Internal memory standard, expandable via USB memory stick
  • 120dB Dynamic Range (20 - 140 dB in standard range)
  • Simultaneous A, C and Z Frequency Weighting
  • Slow, Fast and Impulse Detection
  • Over 50 acoustic parameters available to log simultaneously
  • Microphone extension cabling supported to 61 m/200 ft
  • Backlit "Quiet Touch" keypad
  • Backlit LCD color display with full navigation, even while collecting data
  • Easy, one-handed operation
  • Over 18 hours of operation using 4 AA lithium batteries
  • Versatile options include built in digital correction between freefield and random incidence mics
  • Works with any standard 0V prepolarized condenser microphone


  • Cellular, WiFi, or wired networking
  • Remote access to download data, update settings, and more
  • USB 2.0 connections including auxiliary port for GPS, USB storage, modem and more


  • User selectable multi-parameter Data Logging (as fast as 2.5ms)
  • 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
  • Multiple setup configurations can be stored on each meter
  • 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 of .wav recording based on varying background level (*)
  • Accelerometer connectivity/ICP® power for vibration measurements with adaptor (*)

(*) Indicates an available option

Onboard Storage Capabilities Offer: 

  • 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:

ANSI S1.4-2014 Class 1 and S1.43-1997 Type 1
S1.11-2014 Class 1, all filters [Octave Filter Standards, Option 831C-OB3]
IEC 61672-1 Ed. 2.0 (2013) 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
61260 Ed. 2.0 (2014) Class 1, all filters [Octave Filter Standards, Option 831C-OB3]
61010-1 Ed. 3.0 (2010-06) [Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use]
61326-1 Ed. 2.0 (2012-07) and 61672-1 Ed. 2.0 (2013-09) [EMC Immunity and Emission]
2006/95/EC Low Voltage Safety Directive
2004/08/EC EMC Directive
FCC Title 47 CRF Part 15, Class B