AWA6228+ Class 1 Multifunction Sound Level Meter
The AWA6228+ is an advanced Class 1 multifunction sound level meter designed for professional environmental, industrial, occupational and acoustic noise measurement.
Unlike a fixed-function instrument, the AWA6228+ can be configured around your application. Start with professional Class 1 integrating measurement and add statistical analysis, octave analysis, FFT, data logging, sound recording, occupational noise measurement, GPS or reverberation functions as required.
This makes the AWA6228+ ideal for users who want advanced measurement capability without paying for functions they do not need.
Key Features
- IEC 61672 Class 1 sound level meter
- IEC 61260 Class 1 octave analysis
- IEC 61252 occupational noise / dosimeter capability
- 20–142 dB total measurement range
- Up to 145 dB peak
- 10 Hz–20 kHz frequency range
- A, C and Z frequency weighting
- Fast, Slow, Impulse and Peak time weighting
- Integrating sound level measurement
- Statistical noise analysis
- Optional 1/1 octave analysis
- Optional 1/3 octave analysis
- Optional FFT analysis
- Optional noise dosimeter functions
- Optional data logging
- Optional sound recording
- Optional GPS positioning
- Optional reverberation time measurement
- 240 × 320 colour display
- USB and RS-232 communication
- Up to 30 hours battery operation
- Bluetooth wireless communication available
Choose Your AWA6228+ Configuration
| Configuration | Best For | Included Functions |
|---|---|---|
| Option 1 – Integrating | General professional Class 1 noise measurement | Integrating measurement |
| Option 2 – Environmental | Environmental, workplace and community noise surveys | Integrating + Statistical Analysis + Data Logging |
| Option 3 – Frequency Analysis | Advanced environmental and noise-source investigation | Integrating + Statistical Analysis + Data Logging + 1/1 Octave Analysis |
Option 1 – Integrating
The most cost-effective entry into the AWA6228+ platform.
Ideal for professional users who require Class 1 integrating noise measurement without additional analysis functions.
Suitable for machinery, workplace, industrial and general environmental measurements.
Option 2 – Environmental
Recommended for professional environmental and community noise measurement.
Adds statistical analysis and time-history data logging, making it suitable for:
- Environmental noise surveys
- Community noise
- Traffic noise
- Construction noise
- Industrial boundary measurements
- Workplace noise investigations
- Long-duration measurements
Option 3 – Frequency Analysis
Adds real-time 1/1 octave analysis to the Environmental configuration.
This allows the user to determine which frequency bands are contributing to the measured noise and is suited to:
- Noise-source identification
- Machinery noise investigation
- Engineering noise control
- Environmental acoustic investigation
- Frequency analysis
- Acoustic troubleshooting
Additional Measurement Functions
Additional functions can be added to the AWA6228+ where required.
| Optional Function | Capability |
| Statistical Analysis | Ln percentile and statistical environmental noise analysis |
| 1/1 Octave Analysis | 11 real-time octave bands from 16 Hz–16 kHz |
| 1/3 Octave Analysis | 33 real-time bands from 12.5 Hz–20 kHz |
| FFT Analysis | 2048-line real-time frequency spectrum analysis |
| Noise Dosimeter | TWA, Lex,8h, LAVG, Dose and occupational exposure measurements |
| Data Logging | Records instantaneous and processed measurement data over time |
| SD Card + Sound Recording | Measurement storage and WAV audio recording |
| GPS Positioning | Records longitude, latitude, altitude and movement information with measurements |
| Reverberation Time | Indoor reverberation measurement using the integrated impulse response method |
A custom configuration can be supplied where a combination of these functions is required.
Analysis Capabilities
1/1 Octave Analysis
- 11 octave bands
- 16 Hz–16 kHz
- IEC 61260 Class 1
- A, C and Z weighting
- Real-time NR and NC values
- 50 analyses per second
1/3 Octave Analysis
- 33 bands
- 12.5 Hz–20 kHz
- IEC 61260 Class 1
- Simultaneous parallel analysis
- 50 analyses per second
FFT Analysis
The optional FFT function provides:
- 2048 spectral lines
- Sampling frequencies up to 48 kHz
- MAX, MIN and LeqT measurements
- Hanning, Brinell, flat and rectangular window functions
Occupational Noise / Dosimeter
The optional dosimeter function supports:
- TWA
- Lex,8h
- LAVG
- Dose
- LAeq,T
- LCpeak
- LZpeak
- Selectable exchange rates
- Selectable thresholds and criterion levels
Optional Accessories & Add-ons
| Accessory / Option | Purpose |
| AWA6221A Class 1 Sound Calibrator | Field calibration and verification |
| Tripod – 1.46 m | Stable hands-free and long-duration measurements |
| AWA8732 Extension Cable – 5 m | Remote microphone positioning |
| AWA8732 Extension Cable – 10 m | Remote microphone positioning |
| AWA8732 Extension Cable – 20 m | Long-distance remote microphone positioning |
| Extension Rod | Positions the microphone away from the operator |
| AH40 Mini Printer | Immediate field printing of results |
| 32 GB SD Card | Expanded data storage and sound recording |
| GPS Module | Adds location information to measurement records |
| Bluetooth Module | Wireless printing and smartphone communication/control |
Standard Supply
The standard AWA6228+ package includes:
- AWA6228+ sound level meter
- AWA8734 Ø80 mm windscreen
- AWA8522 5 V / 2 A power adaptor
- AWA8730 Mini-USB cable
- USB drive with transfer software
- AWA8760 update / RS-232 cable
- AWA8780 carrying case
- Hand strap
- User manual
Technical Specifications
| Specification | Details |
| Accuracy | IEC 61672 Class 1 |
| Octave Standard | IEC 61260 Class 1 |
| Dosimeter Standard | IEC 61252:2002 |
| Total Measurement Range | 20–142 dB |
| Peak Measurement | Up to 145 dB |
| Frequency Range | 10 Hz–20 kHz ±1 dB, excluding microphone |
| Microphone / Preamplifier | 1/2" pre-polarised condenser microphone + AWA14601 removable preamplifier |
| Frequency Weighting | A, C, Z, B, D and user-defined weighting |
| Time Weighting | F, S, I, Peak |
| A/D Resolution | 24 bit |
| Sampling Frequency | 48 kHz |
| Display | 240 × 320 colour display |
| Display Resolution | 0.1 dB |
| Internal Storage | 32 MB Flash |
| Additional Storage | Optional SD memory card |
| Interfaces | USB, RS-232, AC and DC outputs |
| Power Supply | 4 × LR6 batteries or 5 V external supply |
| Battery Life | Up to 30 hours |
| Dimensions | 260 × 80 × 30 mm |
| Weight | Approx. 0.35 kg including batteries |
| Operating Temperature | -10°C to +50°C |
| Storage Temperature | -20°C to +70°C |
| Operating Humidity | 25–90% RH |
Typical Applications
- Environmental noise measurement
- Workplace noise assessment
- Industrial boundary noise
- Machinery and equipment noise
- Construction noise
- Traffic and community noise
- Occupational noise exposure
- Frequency spectrum analysis
- Noise-source identification
- Engineering noise control
- Long-term noise monitoring
- Reverberation measurement
- Building and room acoustics