Larson Davis 824 Sound Level Meter Overview
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Key 824 Hardware Features Include:
- 2MB internal memory allows for large data files
- 105dB+ Dynamic Range (< 25 to > 140dBA in standard range)
- Low system noise floor: < 16dBA typical in ISM mode (377B41 mic)
- Easy, one-handed operation
- 4 Hours of Operation using 3 AA Batteries
- Works with any standard 200V or 0V condenser microphone: choice of microphone available
- Microphone extension cabling supported to 150m/500ft
- Backlit keypad
- Backlit LCD display with full navigation, even while collecting data
Useability:
- RMS, Peak A, C and Z Frequency Weighting
- RMS Slow, Fast and Impulse Detection
- Building Acoustics: RT60, NCB and RC calculations (*)
- Multiple setup configurations can be stored on each meter
- Outdoor kits and options available for unattended monitoring
- 824 Util Software allows meter setup and data download
- Real Time 1/1 & 1/3 Octave Frequency Analysis (*)
- FFT real time analysis, to 400 lines (*)
- Accelerometer connectivity & ICP® power for vibration measurements (*)
- Audiometry firmware & additional audiometer test hardware available (*)
(*) Indicates an available option
Onboard Storage Capabilities Offer:
- 2 million point single parameter Time History (e.g., LAeq at 1.0 dB resolution)
- 1 million point single parameter Time History (e.g., LAeq at 0.1 dB resolution)
- 70,000 RTA 1/1 octave spectra
- 60,000 LOG intervals without Ln data
- 35,000 LOG intervals with Ln data
- 28,000 point 1/3 octave SSA Leq Time History or RTA 1/3 octave spectra
- 20,000 intervals with 1/3 octave Leq spectrum
- 12,300 SSA intervals with Leq and Max 1/3 octave spectra
- 2,400 FFT 400-line snapshots
Standards Met:
ANSI |
ANSI S1.4 - 1985 - Type 1
ANSI S1.11-1985 - Type 1D |
IEC |
IEC 61672-1 (2002) Class 1 - tested with 377B41
IEC 60804 (1985 & 1993) Type 1
IEC 60651 (1993) Type 1
IEC 61260 (1994) Class 1 |
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