Thank you for your interest in the Larson Davis Model 831 Class 1 Sound Level Meter. This versatile instrument, with high definition display, performs the functions of several instruments. It puts 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. The Larson Davis Model 831 is a fifth generation Larson Davis sound level meter, designed for simple single handed operation, yet is fully featured, smart and versatile with an ever expanding firmware platform. The design of the Model 831 was based on countless inputs from our customers. It expands upon the Larson Davis tradition of delivering value, innovation and function in a rugged single-handed expandable package and is backed by our 2-year Factory Warranty, 24-hour application support and accredited factory service/calibration.
Standard Features
IEC 61672-1:2013, ANSI S1.4, ANSI S1.43 Class 1 integrating sound level meter
Voice Annotation
ANY LEVEL Display
User programmable run modes
Six user selectable statistics (Ln)
Threshold exceedance data
Community Noise Calculations (Lden, CNEL)
GPS Global Positioning Support
Back Erase Functionality
Normalized Spectrum
User-selectable screen layout and lockable setup protection
Remote access and field upgradable
Wide variety of non-proprietary powering options including – 4XAA internal batteries, AC, USB and external batteries
Applications
Class 1 sound measurements to the latest international standards
Environmental noise assessment and monitoring
Reverberation time measurement and building acoustics
Tonality
Occupational noise evaluation
HPD selection
Noise reduction validation
Product quality control
NVH correlation
In-Situ sound power measurements
Real-time analysis of sound in 1/1 and 1/3-octave bands
Code enforcement
Firmware Options:
Firmware_Optionsv2.gif36.5 KB
Supported PC Software:
SLM Utility-G4 – PC software supplied with the Model 831 that supports full sound level meter control, in the field firmware and option upgrades, data export to Excel®, and includes an integrated “Screen Grabber” to display the SLM screen live on a PC
DNA – the analysis, post-processing and reporting tool for sound and vibration measurements. DNA delivers enhanced analysis capability, sound playback and graphical reporting. Graphs can be annotated and shared amongst multiple users using DNA Reader software.