Model AWA6228+ Sound Level Meter

• A handhold noise measuring instrument
• Multifunction and user-  friendly sound  level  meter(integrating  SLM, 1/1  OCT,  1/3  OCT  analyzer,     Noise dosimeter)
• 240×320 color screen
• Measurement range 20~142dB
• Synchronously do statistical, real-time 1/1 OCT, 1/3 OCT, and noise dosimeter measure
• Comply with IEC 61672 Class 1 and IEC61260 Class 1 and IEC 61252
• CE Mark
• 32G SD card function for precise audio recording, GPS positioning

•  Comprehensive noise measurements
• Environment noise certification
• Noise profile measurement of industrial noise
• Peak C sound level measurements
• Impulse noise measurements
• Workplace noise assessments
• Industry boundary assessments
  

▶Menu Interface

▶  1.Integrating Function

1)  Measuring   Interface:  Lxyi,  Lxyp,  Lxeq,t,  Lxeq,T,  Lxmax, Lxmin, Lxpeak、LAE, LC-A, SEL

Note: x is A,C,Z, y is F,S,I

2) Integrating time: 1s~99h59m59s, set in random

3) Measuring Interface: Simple, List, Huge, Big interface User interface

▶  2.Statistical Analysis Function

1)  Main  Function:  The  statistical  analysis,  24  hours noise monitor automatically.

2) Mainly Measure Index: Lxyp , Lxeq,0.5s , Lxeq,T , Lxymax, Lxymin , LxyeqT  , SEL, Ln as minimum: 1, 5, 10, 50, 90 with 0.1 dB resolution, SD

Note: x is A,C,Z       y is F,S,I       n is 1~99

24h measures index: Ld , Ln , Ldn.

3)   Up  to   28  statistical  Ln  %  values,  two  statistical analyzers each has 7 preset to L1, L5, L10, L50, L90, L95 &  L99  and  7   user  defined  Ln  values.  Two  statistical analyzers with independent time and frequency weight.

User Interface

▶  3.Real-time 1/1 Oct Spectrum Function

1)    Filter type: Parallel octave band filter, G10=103/10

2)    Fulfills standards: IEC 61260: 1995 Class 1

3)    Frequency bands: 11 Octave bands 16Hz-16kHz

4)    Frequency Weighting: A, C, Z can be chosen

5)    Center  Frequency:  16  Hz,  31.5  Hz,  63  Hz,125  Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz, 16 kHz

6)    Measuring Interface: List i and graph interface

7)    Measuring  Parameters:  Lxyp ,  Lxeq,0.5s,  Lxeq,T ,  ,  Lxymax, Lxymin , Tm, NR       Note: x is A,C, Z,F0i              y is F,S

8)    Display  content: Real-time display NR & NC values and curves in the process of measuring

NR according to ISO 1996:1971

NC according to ANSI S2.12-2008

9)    Real-time Analysis Speed: 50 times/s

10)  Level linear range: above 110dB User Interface

▶ 4.Real-time 1/3 OCT Spectrum Function

1)    Filter  type:  Parallel  (simultaneous)  1/3  octave  band filter, G10=103/10

2)    Fulfills standards: IEC 61260: 1995 Class 1

3)    Frequency bands: 33 Octave bands 12.5Hz-20kHz

4)    Real-time Analysis Speed: 50 times/s

5)    Measuring    Interface:    List    interface    and    graph interface

6)    Measuring  Parameters:  Lxyp ,  Lxeq,0.5s ,  Lxeq,T ,  ,  Lxymax, Lxymin , Tm         Note: x is A,C,Z,B,D, F0i        y is F,S

7)    Frequency Weighting:    A, C, Z can be chosen

8)   Level linear range: above 110dB User Interface

▶ 5.Real-time FFT Analysis Function

1) Line Number: 2048lines

2) Sampling Freq: 48 kHz, 24 kHz, 12 kHz, 6 kHz, 3 kHz

3) Measuring Parameters: MAX, MIN, LeqT

4) Window Functions: hanning, brinell, flat, rectangular User Interface

▶ 6.Dosimeter Function

1) Exchange rates: Q3, Q 4,Q 5,Q 6

2) Fulfills standard: IEC 61252: 2002

3) Selectable Thresholds: 40-90dB

4) Selectable Criterion: 70-90dB

5) Lock and with limited access

6) Noise dose: 0.01%-999.99%

7) Measuring Parameters: LAsp, LASMAX, LASMIN, TWA, LEX,8h, LCpeak, LZpeak, LAeq,T, LAVG, DOSE

8) Logging interval: 1min

9) Logging content: LAVG1m,LAeq1m, LCpeak, LZpeak,LASmax, LASmin

▶ 7.Data Logging Function

1) Logged data can be exported to PC

2) Logged content dependent on authorized and opening analyzer.

Logging of instantaneous data (Lp) and processed data (Leq and other indexes), frequency analysis.

3)  Logging  interval:  20ms~2000ms  can  be  chosen,  a 20ms as adjustable unit.

▶ 8.SD Card & Sound Recording Function

1) The SD card can be used as a memory card after installing the program. Saved files can be opened in the EXCEL directly

2) When connected to the computer via USB interface, it changes SD card into U disk

3) Record Format:   8000 samples/s@8bit,

48000 samples/s@32bit

4) File Format:   ‘WAV’ including calibration information

5) Record Time: fs=48k, record time less than 1h per file fs=8k, record time less than 12h per file

6) Replay: by the meter or computer

Data is captured to the SD memory card inserted in the sound level meter

▶ 9.GPS Positioning Function

Measure  longitude,  latitude,  altitude,  movement  speed which  can  be  recorded  together with  the  noise  measu rement  result.

▶ 10.Reverberation time measurement

If  AWA6228+   sound  level  meter   can  measure  the indoor  reverberation  time  in  the  integrated  impulse response method specified by ISO3382 after installed with reverberation time measurement software.

The integrated impulse response method means the method in which the decay curve of the indoor sound pressure level is obtained by backward integration of the   squared  value  of  the   impulse   response.   The integrated   impulse   response   method   utilizes   the modern  digital  processing  technology  that   features easy  and  convenient  operation. More  important, the integrated   impulse response   method   has    higher reliability and repeatability than the interrupted noise method in principle. Particularly in the low frequency band (<250Hz) measurement, it has more advantages. Therefore, it is preferred that the integrated impulse response method is selected for the measurement. ISO 3382:1997  standard thinks that the precision of one value measured in integrated impulse response method is  equivalent  to  the  averaged  value  of  ten  values measured in interrupted noise method. It only needs to be  furnished  with  impulse  sound  source,  such  as balloon, firecracker and starting gun etc. The sound source   features   compact   size,   light   weight,   easy operation, and high efficiency.