AWA6228+ Class 1 Multifunction Sound Level Meter
The AWA6228+ is a professional Class 1 multifunction sound level meter designed for environmental noise, industrial acoustics, occupational noise assessment and advanced noise investigation.
Unlike a fixed-function instrument, the AWA6228+ can be configured around the measurement application. Start with professional Class 1 integrating measurement and add statistical analysis, 24-hour monitoring, octave analysis, FFT, time-history logging, WAV audio recording, occupational noise measurement, GPS or reverberation functions as required.
This makes the AWA6228+ particularly suitable for professional users who want a flexible Class 1 platform without paying for measurement 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
- 24-bit A/D conversion
- 48 kHz sampling frequency
- A, C and Z frequency weighting
- Fast, Slow, Impulse and Peak time weighting
- Integrating sound level measurement
- Optional statistical noise analysis
- Optional automatic 24-hour noise monitoring
- Optional 1/1 octave analysis
- Optional 1/3 octave analysis
- Optional 2048-line FFT analysis
- Optional TWA / Noise Dose measurement
- Optional time-history data logging
- Optional WAV sound recording
- Optional GPS positioning
- Optional reverberation time measurement
- 240 × 320 colour display
- USB and RS-232 communication
- Optional Bluetooth communication
- Up to approximately 30 hours battery operation
- Removable 1/2" measurement microphone and preamplifier
Please note: The AWA6228+ is a modular instrument. Measurement and analysis functions depend on the configuration selected.
Choose Your AWA6228+ Configuration
| Configuration | Best For | Included Functions |
|---|---|---|
| Option 1 – Integrating | General professional Class 1 noise measurement | Integrating measurement |
| Option 2 – Environmental | Environmental, community and long-duration noise surveys | Integrating + Statistical + 24-hour monitoring + Data Logging |
| Option 3 – Frequency Analysis | Environmental and noise-source investigation | Integrating + Statistical + 24-hour monitoring + Data Logging + 1/1 Octave |
Additional functions including 1/3 octave, FFT, WAV recording, TWA / Dose, GPS and reverberation measurement can be added where required.
Option 1 – Integrating
The most cost-effective entry into the AWA6228+ platform.
Designed for professional users requiring Class 1 integrating sound level measurement without additional statistical or frequency-analysis functions.
Measurement parameters include:
- Lp
- Leq,t
- Leq,T
- Lmax
- Lmin
- Lpeak
- LAE
- SEL
Integration time can be set from 1 second to 99 hours 59 minutes 59 seconds.
Suitable for:
- Machinery noise
- Industrial noise
- Workplace measurements
- General environmental noise
- Equipment testing
- Professional Class 1 sound level surveys
Option 2 – Environmental
Recommended for professional environmental, community and long-duration noise measurement.
This configuration adds statistical analysis, automatic 24-hour monitoring and time-history data logging to the integrating measurement functions.
Statistical measurements include:
- Leq
- Lmax
- Lmin
- SEL
- L1
- L5
- L10
- L50
- L90
- L95
- L99
- Standard deviation
- User-defined Ln percentile levels
The AWA6228+ provides two statistical analyzers with independently selectable frequency and time weightings.
Automatic 24-hour monitoring also provides environmental parameters including:
- Ld
- Ln
- Ldn
Suitable for:
- Environmental noise surveys
- Community noise
- Traffic noise
- Construction noise
- Industrial boundary noise
- Workplace noise investigations
- Long-duration measurements
- Environmental compliance investigations
Need to identify what caused a noise event? WAV audio recording can also be added to this configuration.
Option 3 – Frequency Analysis
Designed for professional environmental and engineering investigations where the frequency content of the measured noise must also be identified.
This configuration includes:
- Integrating measurement
- Statistical analysis
- Automatic 24-hour monitoring
- Time-history data logging
- Real-time 1/1 octave analysis
The 1/1 octave analyzer allows the user to determine which frequency bands are contributing to the measured noise.
Suitable for:
- Noise-source identification
- Machinery noise investigation
- Engineering noise control
- Environmental acoustic investigations
- Frequency analysis
- Acoustic troubleshooting
- Industrial noise investigations
For finer frequency resolution, 1/3 octave analysis or FFT analysis can also be added.
Additional Measurement Functions
The AWA6228+ can be configured with additional measurement modules where required.
| Optional Function | Capability |
|---|---|
| Statistical Analysis | Ln percentile analysis and automatic 24-hour environmental noise monitoring |
| 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 high-resolution frequency spectrum analysis |
| TWA / Noise Dose | TWA, LEX,8h, LAVG, Dose and occupational exposure measurements |
| Data Logging | Records instantaneous and processed measurement data over time |
| SD Card + WAV Recording | Expanded storage and actual audio recording |
| GPS Positioning | Records location information with measurement results |
| Reverberation Time | Indoor reverberation measurement for building acoustics |
Custom configurations can be supplied where several functions are required.
1/1 Octave Analysis
The optional real-time 1/1 octave module provides Class 1 parallel octave-band frequency analysis.
Frequency bands:
- 16 Hz
- 31.5 Hz
- 63 Hz
- 125 Hz
- 250 Hz
- 500 Hz
- 1 kHz
- 2 kHz
- 4 kHz
- 8 kHz
- 16 kHz
Key capabilities include:
- IEC 61260 Class 1
- A, C and Z weighting
- List and graphical display
- Real-time NR values
- Real-time NC values
- Up to 50 analyses per second
Suitable for machinery noise, environmental acoustics, engineering noise control and noise-source identification.
1/3 Octave Analysis
The optional 1/3 octave module provides finer frequency resolution for detailed professional acoustic investigation.
Key capabilities include:
- 33 frequency bands
- 12.5 Hz–20 kHz analysis range
- Parallel real-time filtering
- IEC 61260 Class 1
- A, C and Z frequency weighting
- List and graphical display
- Up to 50 analyses per second
Suitable for:
- Detailed environmental noise analysis
- Machinery and product noise
- Acoustic troubleshooting
- Engineering investigations
- Noise-control work
FFT Analysis
The optional FFT module provides higher-resolution spectrum analysis where octave analysis alone does not provide sufficient frequency detail.
Key capabilities include:
- 2048 FFT lines
- Selectable sampling frequencies up to 48 kHz
- MAX measurements
- MIN measurements
- Leq,T
- Multiple FFT window functions
Suitable for:
- Tonal noise investigation
- Machinery diagnostics
- Acoustic troubleshooting
- Detailed noise-source identification
- Engineering noise-control work
Occupational Noise / TWA & Dose
The optional dosimeter function is designed for workplace and occupational noise exposure assessment.
Measurement capabilities include:
- TWA
- LEX,8h
- LAVG
- Noise Dose
- LAeq,T
- LCpeak
- LZpeak
- LASmax
- LASmin
- SEL
Selectable exchange rates include:
- Q3
- Q4
- Q5
- Q6
Threshold levels and criterion levels can also be configured.
Suitable for occupational hygiene, workplace noise surveys and professional exposure assessment.
Time-History Data Logging
The optional data logger records measurement results over time for long-duration surveys and trend analysis.
Logging can include:
- Instantaneous sound pressure levels
- Leq and processed measurement parameters
- Frequency-analysis data
The logging interval can be selected from 20 ms to 2000 ms in 20 ms increments.
Logged data can be transferred to a computer for further analysis.
WAV Audio Recording
The optional SD card and audio recording module allows actual sound to be recorded during noise measurements.
Features include:
- WAV audio file format
- Measurement/calibration information associated with stored files
- Multiple recording sampling rates
- Playback on the sound level meter
- Playback on a computer
- Audio stored to removable SD memory
Audio recording is particularly useful during environmental and unattended measurements where the cause of a noise event needs to be identified afterwards.
GPS Positioning
The optional GPS module allows measurement location information to be stored together with noise results.
GPS information can include:
- Longitude
- Latitude
- Altitude
- Movement speed
This is useful for environmental surveys, mobile measurements and measurements performed across multiple locations.
Reverberation Measurement
The AWA6228+ can also be configured for reverberation time measurement using an integrated impulse-response method.
Suitable for:
- Building acoustics
- Auditoriums
- Halls
- Classrooms
- Meeting rooms
- Room acoustic investigations
- Acoustic treatment assessment
Data Storage & Connectivity
Depending on configuration, the AWA6228+ provides:
- Internal measurement storage
- Optional SD card storage
- USB communication
- RS-232 communication
- AC signal output
- DC signal output
- PC data transfer
- Excel-compatible stored measurement data
- Optional Bluetooth communication
- Optional GPS
Standard Supply
The standard AWA6228+ package includes:
- AWA6228+ sound level meter
- Measurement microphone and removable preamplifier
- AWA8734 Ø80 mm windscreen
- AWA8522 5 V / 2 A power adaptor
- AWA8730 Mini-USB cable
- AWA8760 update / RS-232 cable
- AWA8780 carrying case
- Hand strap
- Windscreen retaining accessory
- USB drive with transfer software
- User manual
Included items may vary according to the selected configuration.
Optional Accessories & Add-ons
| Accessory / Option | Purpose |
|---|---|
| AWA6221A Class 1 Sound Calibrator | Professional field calibration and verification |
| 32 GB SD Card + Audio Recording Module | Expanded storage and WAV audio recording |
| AWA2583 Outdoor Noise Monitoring Case | Supports unattended outdoor environmental monitoring |
| Tripod – 1.46 m | Stable fixed-position noise measurement |
| AWA8732 Extension Cable – 5 m | Remote microphone positioning |
| AWA8732 Extension Cable – 10 m | Longer remote microphone positioning |
| AWA8732 Extension Cable – 20 m | Long-distance remote microphone positioning |
| Extension Rod | Positions the microphone away from the operator |
| GPS Module | Adds location information to measurement records |
| Bluetooth Module | Wireless communication and control |
| AH40 Mini Printer | On-site printing of measurement results |
Technical Specifications
| Specification | Details |
|---|---|
| Instrument Type | Class 1 Multifunction Sound Level Meter |
| Sound Level Standard | IEC 61672 Class 1 |
| Octave Standard | IEC 61260 Class 1 |
| Occupational Noise Standard | IEC 61252 |
| Total Measurement Range | 20–142 dB |
| Peak Measurement | Up to 145 dB |
| Frequency Range | 10 Hz–20 kHz ±1 dB, excluding microphone |
| Microphone | 1/2" prepolarised condenser measurement microphone |
| Preamplifier | AWA14601 removable preamplifier |
| Frequency Weighting | A, C, Z, B, D and user-defined weightings |
| Time Weighting | Fast (F), Slow (S), Impulse (I), Peak |
| A/D Resolution | 24 bit |
| Sampling Frequency | 48 kHz |
| 1/1 Octave | 11 bands, 16 Hz–16 kHz |
| 1/3 Octave | 33 bands, 12.5 Hz–20 kHz |
| FFT | 2048 lines |
| Display | 240 × 320 colour display |
| Display Resolution | 0.1 dB |
| Internal Storage | Internal flash memory |
| 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 approximately 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
- Community noise surveys
- Traffic noise
- Construction noise
- Industrial boundary noise
- Long-duration environmental monitoring
- Workplace noise assessment
- Occupational noise exposure
- Machinery and equipment noise
- Frequency spectrum analysis
- Noise-source identification
- Engineering noise control
- Time-history logging
- Noise-event audio recording
- Building acoustics
- Reverberation measurement
- Acoustic consultancy
- Industrial hygiene
- Research and education
Help Me Choose
Sound Level Meters
| Model | Accuracy | Main Capability | Best For |
|---|---|---|---|
| AWA5636 | Class 2 | General and integrating sound level measurement with selected optional functions | General workplace, machinery and environmental noise where Class 2 is suitable |
| AWA5662 | Class 1 | Integrating, statistical, logging, occupational and octave configurations | Cost-effective professional Class 1 noise measurement |
| AWA6228+ | Class 1 | Highly configurable platform with statistics, octave, FFT, logging, recording, dosimetry, GPS and reverberation | Professional users who want to configure the exact measurement functions they require |
| AWA6292 | Class 1 | New-generation advanced acoustic platform with environmental monitoring, octave analysis, audio recording, reverberation, STI and modern connectivity | Advanced environmental, consulting and architectural acoustic applications |
The AWA5636 is a practical starting point where Class 2 accuracy is suitable.
Choose the AWA5662 where Class 1 accuracy is required while keeping the instrument relatively straightforward and cost-effective.
Choose the AWA6228+ where flexibility is important and functions such as detailed frequency analysis, FFT, WAV recording, GPS or specialist measurement modules may be required.
Choose the AWA6292 for the latest Aihua Class 1 platform, particularly for advanced environmental monitoring, architectural acoustics, modern connectivity and STI applications.
Specialist Instruments
| Model | Type | Best For |
|---|---|---|
| AWA5920 | Noise Dosimeter | Personal and occupational noise exposure monitoring |
| YT2001 | Acoustic Imager | Leak detection, partial discharge and sound-source location |
Not sure which model you need? Send us your application, required measurement parameters or applicable standard and our applications team can recommend the most suitable instrument and configuration.