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SoundExpertTM Portable Noise Monitoring Systems Models KNMS048 and KNMS048-SLA-S are built around the powerful and easy-to-use SoundExpert Sound Level Meter Model 821. Designed to deploy for remote measurements then retrieved for data download
and analysis, these systems are ideal for projects when real time access to measurement data is not required. The system is available to rent as Model KNMS048, utilizing battery or line power, or as a solar-based system Model KNMS048-SLA-S.
All SoundExpert Noise Monitoring Systems offer full-featured data logging, selectable 1/1 or 1/3 octave band analysis, microphone, preamplifier, environmental protection, included data analysis software, and accessories. Contact
our team with any questions or to configure a system that exactly meets your specifications.
| Dynamic Range (A-weighted typical) | 14 to 140 dB |
| Time Weightings | Slow, Fast, and Impulse (Linear and Peak); measured simultaneously for frequency weightings |
| Frequency Weightings | A, C, Z measured simultaneously for each time weighting |
| 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 |
821 Kits provide an easy out of the box solution for most testing situations. If additional hardware or software are needed for more complex setups, The Modal Shop can help. View Sound Level Meter Selection Sheet for more details.
| Model | Description |
|---|---|
| Included with All Outdoor Kits | |
| 821 | Sound Level Meter |
| 377B02 | Free-field Microphone |
| PRM821 | Preamplifier |
| WS001 | Windscreen, 3.5” |
| X21-SD-8GB | 8 GB, industrial grade microSD memory chip for use in 721 and 821 meters |
| PSA045 | Universal AC power supply with USB-C output connector |
| CBL242-03 | USB-C to USB-C cable, 3 ft. Includes USB-C to USB-A adapter |
| KEPS2116 | Environmental protection kit for 1/2 in preamplifiers. Includes EPS2116 with windscreen, desiccant, and bird spike in custom case with ACC009 monopole and accessories. Tripod mounting options for 1/4-20 thread (TRP001), 1.5 in. pipe (TRP003) and 3/4 in. NPT pipe included. |
| CCS061 | Environmental protection case for SoundExpert 721 and 821. Includes cable port and ADP116 power distribution block |
| CBL241-01 | Power cable, 1 ft, connects 721 or 821 to power distribution block |
| CBL225-01 | Power cable, 1 ft. Connects SLA battery and power distribution block |
| EXC010 | Microphone Extension Cable, 10 ft |
| EPS048-OPT3x | Superclamp option added to CCS061. Allows Monopole ACC009 to mount microphone, preamplifier and EPS2116 outdoor protection on side of case |
| CAL200 | Acoustic Calibrator, 94 and 114dB |
| SWW-Utility-G4 | G4 LD Utility software to connect, control, download and view data from multiple instruments |
| USB Drive | G4 LD Utility software, SoundExpert Reference Manual, Digital Calibration Certificates |
| Power Options included with KNMS048 Kit (pick one) | |
| BAT011 / PSA040 | Battery, 12V Sealed Lead Acid battery SLA, 21Ah, with power supply. Expect > 1 week battery life with continuous operation with fast logging and 1/3 filters on, display off and internal battery charged in typical environmental conditions. Ideal runtime maximum is 11 days in this configuration. |
| BAT024 | 12x D cell battery holder with fuse and Anderson distribution connector; batteries not included. Expect >1 week battery life with continuous operation with fast logging and 1/3 filters on, display off and internal battery charged in typical environmental conditions. Energizer E95, Duracell MN1300 or Amazon Basics all provide similar performance as stated with ideal runtime maximum of 9 days in this configuration. Energizer Ultimate extends expected runtime to beyond 12 days (>12 typical). D-cells are available for purchase separately, but add shipping weight. |
| Power Options included with KNMS048-SLS-S Kit | |
| SLP004 | Solar panel, 30 Watt, for use with SoundExpert 721/821 based EPS048 and NMS048 systems. Includes CCS063 case |
| TRP024 | Stainless steel tripod for SLP004 solar panel with canvas bag |
| TRP024-MNT4 | Mounting bracket to mount SLP004 solar panel to TRP024 Tripod |
| CBL226-1/2 | Power cable, 6 in. Connects PSA047 Solar Charger and power distribution block |
| CBL228-04 | Power cable, 4 ft. Connects Solar Panel and PSA047 Solar Charger |
| PSA047 | Solar Charge Controller for use with 721 or 821, 5A |
| PSA039 | Power supply to add AC power to Solar |
| Optional Add-ons to Outdoor Kit | |
| PSA046 | Qi charger pad with USB-C connector. Includes pad and CBL242-03 USB cable. Does not include PSA045 power supply. |
| CBL042 | AC/DC output cable, 6ft to RCA/BNC, 3.5 mm plug |