The Kanomax USA Model 4431 Sound Level Meter is a compact, highly accurate instrument designed for industrial hygiene, occupational noise assessment, environmental noise measurement, and general sound-level testing. With a measurement range extending up to 130 dB, multiple frequency and time weighting options, and support for a wide range of acoustic measurement parameters, the Model 4431 gives safety professionals, engineers, and technicians the data needed to evaluate noise conditions accurately.
Designed to comply with ANSI S1.4 1983 Type 2 and IEC 61672-1 Class 2 sound level meter standards, the Model 4431 combines professional measurement capabilities with a lightweight handheld design. The 4431-1G configuration also incorporates an advanced 0-dB function that reduces the influence of microphone self-noise, extending measurement capability into extremely low sound-pressure environments.
Accurate Sound Measurement for Noise Assessment
The Model 4431 measures far more than instantaneous sound pressure level. Users can evaluate equivalent continuous sound levels, sound exposure, maximum and minimum levels, percentile sound levels, peak values, and other important acoustic parameters used in professional noise studies.
A, C, and Z frequency weighting together with Fast, Slow, and Impulse time weighting allow the instrument to be configured for a wide range of sound measurement applications. Its highly sensitive electret condenser microphone and 0.1 dB display resolution provide the detail needed for both routine surveys and more demanding acoustic investigations.
Designed for Industrial Hygiene and Environmental Noise Monitoring
The Model 4431 is well suited for evaluating workplace and community noise where accurate sound-level information is essential for identifying exposure concerns, documenting conditions, and supporting noise-control decisions.
Applications include occupational and industrial hygiene investigations, workplace noise exposure measurements, environmental noise surveys, equipment noise evaluation, and general acoustic testing. Its portable design makes it practical for measurements throughout manufacturing facilities, construction environments, commercial properties, research settings, and outdoor locations.
Expandable for Advanced Acoustic Analysis
One of the Model 4431’s key advantages is its ability to expand beyond standard sound-level measurements using optional program cards. Depending on the application, the meter can be configured for more advanced acoustic analysis including:
- 1/1 and 1/3 octave real-time analysis
- FFT frequency analysis
- Real sound recording and monitoring
These expandable capabilities allow the Model 4431 to support both routine noise surveys and more detailed investigation of sound frequency characteristics and noise sources. This makes the instrument useful when basic decibel readings alone are not sufficient to understand an acoustic problem.
Flexible Data Storage, Reporting, and Connectivity
Measurement results can be stored on an SD card for later review and analysis, helping users document sound surveys and maintain measurement records. The Model 4431 can also communicate with a computer through USB using compatible software and interface accessories, while additional output options support integration with printers, recorders, and other measurement systems.
This combination of portable data collection and computer-based analysis makes the Model 4431 well suited for repeated noise surveys, long-term measurement projects, and applications where measurement documentation is critical.
Portable Sound Level Meter for Field and Facility Testing
Despite its advanced measurement capabilities, the Model 4431 is designed for convenient handheld operation. A large backlit four-digit display provides clear readings with an analog bar graph for quickly observing changing sound levels, while battery operation allows the instrument to be used throughout facilities or at remote measurement locations.
For professionals who need a versatile Class 2 sound level meter for occupational, industrial, environmental, or engineering applications, the Kanomax Model 4431 provides accurate measurement with the flexibility to expand into advanced acoustic analysis as testing requirements evolve.
More Information
Navigate the tab section below to see this product’s Features & Benefits, Specifications, Resources, and more.
- Lightweight and compact design
- A, C, and F weighting modes
- 28 to 130 dB measurement range
- Measures Lp, Leq, Le, Lmax, Lmin and Lx
- Equipped with highly sensitive electret condenser microphone
- Large 4 digit display with 0.1 dB resolution with backlighting and analog bar graph
- Add additional functions with the program cards
- Includes SD card for data storage, windshield, carrying case, AA batteries, hand strap, and calibration certificate
- Industrial Hygiene Investigation
- Noise Exposure Measurement
- Environmental Noise Measurement
| Main Unit Specifications | |
|---|---|
| Weighting | A, C and Z (FLAT) |
| Ranges | A: 28 to 130 dB (0 to 80 BD if 0dB function is active for 4431-1G) C: 36 to 130 dB Z (FLAT): 40 to 130 dB C peak: 55 to 141 dB Z (FLAT) peak: 60 to 141 dB |
| Time Weighting | Fast, Slow, Impulse |
| Parameters | Sound pressure level(Lp) A-weighted sound pressure level(LA) C-weighted sound pressure level(LC) Equivalent continuous A-weighted sound pressure level(LAeq) Sound Exposure level(LAE) Maximum sound pressure level(LAmax) Minimum sound pressure level(LAmin) Percentile sound pressure level(5 freely selectable values、LAN) Peak Sound Pressure level(Lpeak) C- weighted Peak Sound Pressure level(LCpeak) Power average of maximum sound pressure level in a given interval(LAtm5) Impulse Sound pressure level(LAI) Impulse equivalent continuous sound pressure level(LAIeq) |
| Standards | ANSI S1.4 1983: Type 2 IEC 61672-1: Class 2 |
| General Specifications | |
| Interface | USB, Printer |
| Output | 1 Vrms (AC output) 2.5 V (DC output) |
| Power Supply | 4 AA Batteries or AC adapter |
| Operating Environment | 14 to 122°F (-10 to 50°C), 30 to 90%RH with no condensation |
| Dimensions | W 3.4″ x H 12.9″ x D 1.9″ |
| Weight | 1 lb (453g) |
| Warranty | 1 year |
| Standard Accessories | Operation manual, SD card for data storage, Windshield,Carrying case, AA batteries, Hand strap, Calibration certificate |
- Microphone with PreAMP (20 to 10,000dB): Model AC7052NR
- Microphone without PreAMP (20 to 10,000dB): Model AC7052R
- Windscreen Φ50: Model ACNA-0304
- Windscreen Φ90: Model ACNA-0301
- Weatherproof Screen Φ200 with Tripod: Model ACNA-0303
- Weatherproof Screen Φ200 without Tripod: Model ACNA-0303
- AC Adapter - AC 100 V Input. DC 6 V Output: Model AC-1026
- Tripod EX630, Made by Velbon Corporation: Model ACNA-0333
- 3m Microphone Cable: Model ACBC-0046-3
- 5m Extension Cable: Model 3mACBC-0046-5
- 10m Extension Cable: Model ACBC-0046-10
- 20m Extension Cable: Model ACBC-0046-20
- 30m Extension Cable: Model ACBC-0046-30
- 50m Extension Cable with Reel: Model ACBC-0046-50
- 100m Extension Cable with Reel: Model ACBC-0046-100
- 200m Extension Cable with Reel: Model ACBC-0046-200
- 300m Extension Cable with Reel: Model ACBC-0046-300
- BNC-Pin Cable 1.5m: Model ACBC-0071
- Acoustic Calibrator 94 dB, 1 kHz: Model AC2127
- PC Communication Cable USB Type: Model ACBC0038PC
- Communication Cable for Printer ACBS2-80TS, RS232C Type: Model ACBC0026
- 1/1 and 1/3 Octave Real-time Analyzer Card: Model ACNA-0038
- Real Sound Recording Card: Model ACNA-0038R
- FT Analyzer Card: Model ACNA-0038FF
- Printer RS232C Type: Model ACBS2-80TS
- AC Adapter for Printer: Model AC-1016
- Roll Paper for Printer: Model ACBS-80-15
- Data Processing Software within USB Cable: Model ACNA-0038M
- Correction Function 0dB: Model AC6236-0dB
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