Larson Davis 821 Spartan Sound Level Meter - Class 1 Sound Level Meter and Real-time Noise Analyzer for Workplace Noise Protection

Larson Davis 821 Spartan Sound Level Meter - Professional level noise measurements and noise analyses can be easily and quickly performed with the LD 821 Spartan device, assisting in general product design and background noise measurement tasks. The instrument combines the capabilities of a sound level meter data collector and a real-time noise analyzer in a compact, robust, user-friendly handheld instrument. Its special features include sound recording, real-time 1/1 and 1/3 octave analysis, dosemeter recording function, and automatic Bluetooth-based data transfer.

The large and high-resolution graphical touchscreen makes operating the device exceptionally convenient, while the Windows-based PC software aids in instrument setup and remote control (optional), as well as in downloading, evaluating, and exporting data to spreadsheet programs.

• Mining activity noise level measurements
• Construction industry noise safety measurements
• Industrial noise emission measurements
• Workplace occupational noise level measurements
• Industrial and workplace environment noise level checks

• Class 1 integrating sound level meter and real-time noise analyzer with octave analysis
• Compliance (standards):
  • ANSI S1.4-2014
  • ANSI S1.25-1991
  • IEC 61672-1:2013
  • IEC 61252 (2017)
  • IEC 61010-1:2010
  • ISO 612:2009
  • Directive 2014/35/EU
  • RoHS Directive 2011/65/EU
• Dynamic range: 14 ... 140 dB(A)
• Long-term data collection capabilities: Noise level trend and analysis, Automatic data collection, Dosemeter function
• Memory: 8 GB
• Measurements/display: Lmax, Lpeak(max) noise load, Leq equivalent noise load, Ln (6 values), LDN, LDEN
• Detection: fast, slow, impulse
• Real-time analysis (option): 1/1 octave, 1/3 octave
• Weighting: A, C, and Z frequency filter characteristics
• Class accuracy: 1 (Class 1)
• Automatic data transfer via Bluetooth interface
• Color graphical touchscreen with 480x800 pixels
• Power supply: built-in wireless Li-Ion battery or USB rechargeable (typical operating time: 40 hours)
• Size/weight: 260x83x32 mm / 383 grams
• Operating temperature range: -30 ... 60°C
• Windows software (option): configuration, remote control, data transfer