ZAWA6228+ Class 1 Sound Level Meter
A handheld acoustic measurement platform for environmental noise, industrial noise profiling, workplace assessment, impulse noise and C-weighted peak measurements.
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Class 1 Sound Level Meter
A handheld acoustic measurement platform for environmental noise, industrial noise profiling, workplace assessment, impulse noise and C-weighted peak measurements.
Key Features
- 20 to 142 dB measurement range, with peak measurement up to 145 dB.
- Class 1 sound level and octave-band analysis; 24-bit conversion at 48 kHz.
- Simultaneous integration, statistics, octave analysis and noise dose measurement with enabled modules.
- Color display, PC connectivity and configurable audio recording.
- Optional GPS and reverberation-time analysis support more detailed investigations.
Acoustic Performance
| Parameter | Specification |
| Standards | IEC 61672 Class 1; IEC 61260 Class 1; IEC 61252:2002 |
| Additional listed standards | IEC 60651:2001 Type 1; IEC 60804:2000 Type 1; ANSI S1.4:1983 Type 1; ANSI S1.4A:1985 Type 1; ANSI S1.43:1997 Type 1; ANSI S1.25:1991 |
| Marking | CE marking listed in the supplied instrument specification |
| Microphone | 1/2-inch prepolarized condenser microphone; sensitivity level -28 dB |
| Preamplifier | Removable ZAWA14601 |
| Frequency range | 10 Hz to 20 kHz, ±1 dB, excluding microphone |
| Measurement range | 20 to 142 dB; 145 dB peak |
| Self-generated noise | <12 dB(A), <17 dB(C), <22 dB(Z) |
| Frequency weightings | Simultaneous A, C, Z, B, D and two user-defined weightings |
| Time weightings | Simultaneous F, S, I and Peak |
| A/D conversion | 24 bits |
| Sampling frequency | 48 kHz |
| Calibration | Class 1 acoustic calibrator; verify compatible model before ordering |
| Internal memory | 32 Mb flash memory |
| Integration result storage | 3,328 groups |
| Statistical result storage | 3,328 groups with the same indices in both analyzers; 2,663 groups with different indices |
| SD card | Optional 32 GB SD card; requires the appropriate program |
| Display | 240 × 320 color display; adjustable brightness; backlight can be switched off |
| Display resolution | 0.1 dB |
| Low battery indication | On-screen symbol |
| Start delay | 0 to 99 s |
| Back erase | Excludes undesired noise events from the measurement |
Acoustic Performance
| Parameter | Specification |
| Standards | IEC 61672 Class 1; IEC 61260 Class 1; IEC 61252:2002 |
| Additional listed standards | IEC 60651:2001 Type 1; IEC 60804:2000 Type 1; ANSI S1.4:1983 Type 1; ANSI S1.4A:1985 Type 1; ANSI S1.43:1997 Type 1; ANSI S1.25:1991 |
| Marking | CE marking listed in the supplied instrument specification |
| Microphone | 1/2-inch prepolarized condenser microphone; sensitivity level -28 dB |
| Preamplifier | Removable ZAWA14601 |
| Frequency range | 10 Hz to 20 kHz, ±1 dB, excluding microphone |
| Measurement range | 20 to 142 dB; 145 dB peak |
| Self-generated noise | <12 dB(A), <17 dB(C), <22 dB(Z) |
| Frequency weightings | Simultaneous A, C, Z, B, D and two user-defined weightings |
| Time weightings | Simultaneous F, S, I and Peak |
| A/D conversion | 24 bits |
| Sampling frequency | 48 kHz |
| Calibration | Class 1 acoustic calibrator; verify compatible model before ordering |
| Internal memory | 32 Mb flash memory |
| Integration result storage | 3,328 groups |
| Statistical result storage | 3,328 groups with the same indices in both analyzers; 2,663 groups with different indices |
| SD card | Optional 32 GB SD card; requires the appropriate program |
| Display | 240 × 320 color display; adjustable brightness; backlight can be switched off |
| Display resolution | 0.1 dB |
| Low battery indication | On-screen symbol |
| Start delay | 0 to 99 s |
| Back erase | Excludes undesired noise events from the measurement |
Acoustic Performance Continued
| Parameter | Specification |
| Parameter | Diffuse-field correction for ANSI S1.4 |
Calibration note: the technical table lists ZAWA6021A while the accessories list names ZAWA6221A. Compatibility must be confirmed.
Measurement and Spectral Analysis
| Parameter | Specification |
| Integration parameters | LXYi, LXYp, LXeq,t, LXeq,T, LXmax, LXmin, LXpeak, LAE, LC-A and SEL |
| Integration time | 1 s to 99 h 59 min 59 s |
| Display modes | Simple, List, Huge and Big |
| Statistical parameters | LXYp, LXeq,0.5s, LXeq,T, LXYmax, LXYmin, LXYeqT, SEL, LN and SD |
| 24-hour monitoring | Automatic measurements of Ld, Ln and Ldn |
| Statistical analyzers | Two independently weighted analyzers; each provides seven preset and seven user-defined percentiles, up to 28 LN values in total |
| Preset percentiles | L1, L5, L10, L50, L90, L95 and L99; 0.1 dB resolution |
| Octave filters | Parallel 1/1-octave filters; IEC 61260:1995 Class 1; base G10 = 10^(3/10) |
| Octave bands | 11 bands from 16 Hz to 16 kHz: 16, 31.5, 63, 125, 250, 500, 1,000, 2,000, 4,000, 8,000 and 16,000 Hz |
| Third-octave filters | Parallel 1/3-octave filters; IEC 61260:1995 Class 1 |
| Third-octave bands | 33 bands from 12.5 Hz to 20 kHz |
| Spectral analysis rate | 50 analyses/s; level linear range >110 dB |
| Spectral parameters | LXYp, LXeq,0.5s, LXeq,T, LXYmax, LXYmin and Tm; list and graph displays |
| Spectral weighting | Selectable A, C and Z; band-center results also available |
| Noise rating | Real-time NR and NC values and curves; NR reference ISO 1996:1971; NC reference ANSI S2.12-2008 |
| FFT analysis | 2,048 lines; sampling frequencies 48, 24, 12, 6 and 3 kHz |
| FFT results | MAX, MIN and LeqT |
| FFT windows | Hanning, flat-top and rectangular; an additional window designation requires confirmation |
Notation: X denotes A, C or Z frequency weighting; Y denotes F, S or I time weighting.
N denotes a statistical percentile from 1 to 99. Available functions depend on the enabled software modules.
Exposure Recording and Location
| Parameter | Specification |
| Dosimeter standard | IEC 61252:2002 |
| Exchange rates | 3, 4, 5 and 6 dB |
| Selectable threshold | 40 to 90 dB |
| Selectable criterion level | 70 to 90 dB |
| Noise dose range | 0.01 to 999.99% |
| Access control | Key lock with restricted access |
| Dose parameters | LASp, LASMAX, LASMIN, TWA, LEX,8h, LCpeak, LZpeak, LAeq,T, LAVG and DOSE |
| Dose logging | 1 min intervals; LAVG1m, LAeq1m, LCpeak, LZpeak, LASmax and LASmin |
| General data logging | Instantaneous Lp, processed Leq and other indices, and frequency-analysis data; contents depend on enabled analyzers |
| Logging interval | 20 to 2,000 ms in 20 ms steps |
| Data transfer | Logged data can be exported to PC; compatible saved data files can be opened in Excel |
| Audio formats | 8,000 samples/s at 8 bits; 48,000 samples/s at 32 bits |
| Audio files | WAV with calibration information; stored on the inserted SD card |
| Maximum recording per file | Less than 1 h at 48 kHz; less than 12 h at 8 kHz |
| Playback | On the instrument or a computer |
| SD card connection | USB mass-storage access to the SD card after installing the required program |
| GPS option | Longitude, latitude, altitude and movement speed recorded alongside noise results |
| Reverberation-time option | Integrated impulse-response method, with the required reverberation-time software; ISO 3382 reference |
| Reverberation method | Backward integration of the squared impulse response produces the decay curve; requires a suitable impulse sound source |
Reverberation-time measurement is software dependent.
Select the required analysis, recording and positioning modules when ordering.
Interfaces and Operating Conditions
| Parameter | Specification |
| AC output | 1.0 V RMS at full scale; 1 kΩ output impedance; 3.5 mm stereo connector |
| DC output | 20 mV/dB; 1 kΩ output impedance; DB9 connector |
| RS232 | PC data transfer and mini-printer connection; 4,800, 9,600 or 115,200 bps |
| USB | Driver-free connection; communication-command control |
| Power supply | Four LR6 alkaline or rechargeable batteries; 5 V external supply |
| Battery life | Up to 30 h with four LR6 alkaline batteries |
| Clock accuracy | Error <1 min/month |
| Operating temperature | -10 to +50 °C |
| Storage temperature | -20 to +70 °C |
| Relative humidity | 25 to 90% |
| EMC category | Type X |
| Printing | Compatible with ZAH58F or ZAH40 mini-printer |
| Bluetooth | Wireless printing and smartphone communication for remote instrument control |
| Dimensions | 260 H × 80 W × 30 D mm |
| Weight | 0.35 kg including batteries |
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Contact Person: Lisa Niu
Phone Number: +86-15699785629
WhatsApp: +86-15699785629
Company Address: Room 19B, 17th Floor, Building 1, No. 48 Dongzhimenwai Avenue, Dongcheng District, Beijing