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Want a sound level meter that works like your phone? The SoundExpert® Model 821ENV does just that with a large touch display viewable in any condition. Whether making handheld noise measurements or measuring environmental noise for several weeks, the SoundExpert Model 821ENV is an excellent choice for ease of use and low-power operation.
SoundExpert is also available in a Class 2 version, SoundExpert Model 721ENV. Please see Configurations below or download the datasheet for more details.
The SoundExpert Model 821ENV in its basic form includes the essentials for measuring noise by providing:
Using the included G4 LD Utility software, data can be downloaded, visualized, manipulated, and exported to a variety of formats, including Microsoft Excel® .xlsx.
For more advanced applications, options such as 1/1 or 1/3 octave filters for frequency analysis are available. When protection and extra power are needed for unattended outdoor noise measurements, choose from a variety of protective cases with batteries, solar power, and grid/mains power capabilities. SoundExpert Noise Monitoring System Model NMS048 is available as a complete outdoor noise monitoring kit.
The SoundExpert Sound Level Meter Model 821ENV, together with Larson Davis quality and customer support, delivers a professional solution you can trust.
| Dynamic Range (A-weighted typical) | 17 to 140 dB |
| Time Weightings | Fast, Slow, & Impulse |
| Frequency Weightings | A, C, & Z |
| Data Storage (micro SD card) | 8 GB standard Up to 256 GB |
| Data Logging | Time history: 100 ms to 1 h Measurement History: 1 min to 6 h |
| Metrics | Leq, Lmax, Lmin, Lpeak, Ln (6 values), LDN, LDEN |
call about other firmware options
SoundExpert Sound Level Meter is available as a Class 1 or Class 2 device and with or without Octave Band Analysis.
| SOUNDEXPERT SOUND LEVEL METERS | ||||
|---|---|---|---|---|
| Model | 721ENV | 721ENV-D | 821ENV | 821ENV-D |
| Class | 2 | 2 | 1 | 1 |
| Time History Logging | ✓ | ✓ | ✓ | ✓ |
| Measurement History | ✓ | ✓ | ✓ | ✓ |
| Community Noise Metrics | ✓ | ✓ | ✓ | ✓ |
| OBA (1/1 and 1/3 Bands) | ✓ | ✓ | ||
| Included | |
| Microphone | 377B02 (821 Models) 375A04 (721 Models) |
| Preamplifier | PRM821 (821 Models) PRM721 (721 Models) |
| Software | G4 LD Utility |
| Windscreen | WS001 |
| Charging Cable | USB-C (CBL242-03) |
| Optional | |
| Preamplifier extension cables | EXC series |
| See Configuration Guide for Optional Accessories | |
| Acoustic | ANSI S1.4-2014 Class 1 IEC 61672-1:2013 Class 1 |
| Noise Dosimetry (Optional) | ANSI S1.25-1991 IEC 61252:2017 |
| Safety | Directive 2014/35/EU IEC 61010-1:2010 RoHS Directive 2011/65/EU |
| Approvals | CE, RoHS, WEEE |
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