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BSWA-308 Class 1 Sound Level Meter

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  • BSWA-308 Class 1 Sound Level Meter
BSWA 308 Class 1 Sound Level Meter for environmental and occupational noise monitoring

BSWA - 308 Class 1 Sound Level Meter

BSWA-308 is a Class 1 sound level meter (often referred to as a Class 1 SLM) designed for high-accuracy noise measurement, compliant with international standards for precision sound level measurement. It’s widely used in environmental noise monitoring, occupational noise assessments, product testing, construction noise surveys, and acoustical engineering applications.

Key Specifications

Accuracy & Standards

Complies with IEC 61672-1:2013, ANSI S1. 4-1983, ANSI S1.43-1997, and other related noise standards for Class 1 sound meters.

Measurement Performance

  • Linearity range: typicall y ~ 20 dBA to 134 dBA (BSWA 308) in one range with ~123 dB dynamic range.
  • Frequency weighting: A, B, C, Z (Z = linear).
  • Time weighting: Fast, Slow, Impulse.
  • Optional 1/3-octave analysis (in addition to standard 1/1-octave) for detailed spectral noise assessment.

Functions & Calculations

Calculates multiple parameters simultaneously such as:

  • SPL (Sound Pressure Level)
  • Leq (Equivalent continuous sound level)
  • Max / Min / Peak
  • SEL (Sound Exposure Level)
  • Statistical metrics (Ln) and more.

Data Logging & Storage

  • User - definable integral periods (from 1 s up to 24 h).
  • 4 GB MicroSD (TF) card for long - term data logging.
  • Time history and stat istical curves display.

Hardware & Interface

  • High - speed ARM processor with floating - point unit for accurate digital signal processing.
  • Standard RS - 232 remote control port
  • Optional internal GPS for time stamping (often as an add - on).
  • Some configurations include a mini thermal printer.

Power & Display

  • Backlit LCD display for clear readings.
  • Typically powered by batteries (e.g., AA) or external DC/USB

Typical Applications

The BSWA-308 is commonly used for:
  • Environmental noise surveys
  • Workplace noise assessments (e.g., industrial sites)
  • Community and construction noise monitoring
  • Product noise testing and quality control
  • Acoustic engineering and research projects

What’s Usually Included (varies by supplier)

  • BSWA - 308 Class 1 Sound Level Meter
  • Windshield (foam/field)
  • Carrying case
  • Calibration certificate
  • User manual and software
  • MicroSD card
  • USB/Download cable
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