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820 Overview
Operation Manual
Home > Rental > Larson Davis 820 Sound Level Meter Overview

Larson Davis 820 Sound Level Meter Overview

The Larson Davis 820 Sound Level Meter is an industry standard precision integrating Environmental Noise monitor, perfect for Community and Transportation Noise Studies.  The 820 offers Type 1 performance and time-stamped overall Logging of overall Time History, Interval and Exceedance Records. Selectable Ln tables are available, but no spectrum (1/1 or 1/3) is available for this unit.

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Key 820 Hardware Features Include:

  • 110dB Dynamic Range
  • Selectable A or C Frequency Weighting
  • Slow, Fast or Impulse Detection
  • True RMS with two separate peak detectors
  • Easy, one-handed operation
  • Works with any standard 200V or 0V condenser microphone
  • Microphone extension cabling supported to 20ft
  • Over 20 hours of operation using standard 9V battery


  • Long term Logging capabilities: Interval, Time, Daily and Event histories
  • Time Histories as fast as 32 per second
  • Statistics - user selectable 6 Ln values
  • AC/DC output for external recording
  • Outdoor kits and options available for unattended monitoring
  • SLM Util software allows meter setup and data download

Onboard Storage Capabilities Offer:

  • 120,000 Leq Time Histories
  • 4,500 interval records with Ln tables

Standards Met:

ANSI ANSI S1.4-1983 Type 1
ANSI S1.25-1991 Type 1
IEC IEC 651 Type 1
IEC 804 Type 1
Directive 86/188/EEC