Larson Davis SoundAdvisor 831C Sound Level Meter OverviewThe 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.
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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
Connectivity:
- 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
Useability:
- 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] |
OTHER |
DIN 45657
2006/95/EC Low Voltage Safety Directive
2004/08/EC EMC Directive
FCC Title 47 CRF Part 15, Class B |
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