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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: Aihua
  • Model Number: AWA 6228+
  • Accuracy: ±0.1dB
  • Measuring Range: 20~142dBA
  • Frequency Range: 10Hz~20kHz
  • weight: 350g
  • Resolution: 0.1dB

Packaging & Delivery

Packaging Details the instrument is wrapped in a plastic film bag, fixed with hard fermenter plastic padding, and put in an aluminum case and then in a carton,outside, it is to be strengthened by nylon straps.
Carton dimension: 48*37*20 CM---------1 set, weight 5KG
Carton dimension: 48*37*40CM----------2 sets, weight 10.5 KG
Delivery Time 5 days after payment




  •  A handhold noise measuring instrument
  •  Multifunction and user- friendly sound level meter(sound level meter, integrating SLM, 1/1 OCT, 1/3 OCT analyzer, FFT analyzer, Noise dosimeter)
  • 240×320 color screen
  • Measurement range up to 142dB
  • Synchronously do integrating measure, statistical, real-time 1/1 OCT, 1/3 OCT, FFT analysis and noise dosimeter measure
  • Comply with IEC 61672 Class 1 and IEC61260 Class 1 and IEC 61252
  •    mark
  • Language: English and Spanish


Product Uses


  • 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




Fulfils Standards

IEC 61672 Class 1

IEC 61260 Class 1


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


1/2” prepolarized condenser microphone+ Preamplifier

(Sensitivity Level: -28dB)


AWA14601 removable preamplifier

Frequency Range

10 Hz ~ 20 kHz ± 1 dB (not including microphone)

Total Measurement Range

Low range: (20~132)dBA, (25-132)dBC, (30-132)dBZ

High range: (30~142)dBA, (35-142)dBC, (40-142)dBZ

Self-generated Noise

<12 dB(A), 17 dB(C), 22 dB(Z)

Frequency Weighting.

Parallel (simultaneous) A, C, Z, B, D and user1&2-defined weighting

Time Weighting

Parallel (simultaneous) F, S, I, Peak

Measurement Parameters

Lxyp, Lxyi, Lxeq,1s, Lxeq,T, LAE, E, Cpeak, LAFmax, LAfmin, LAfeqT, LAseqT, LAieqT.

Note: X is A, C, Z and Y is F, S, I

A/D Bits:

24 bits

Sampling Frequency

48 kHz


Using Sound Calibrator Class 1 model AWA6221A

Correction Function

Press field correction in order to comply with standards ANSI S1.4

Delay Time

The meter can delay 0~99s after pressing start measuring button

Back Erase Function

Elimination of undesired noise; example barking dogs, cars, doors


240×320 color screen, adjustable brightness, backlight can be closed

Display Resolution

0.1 dB

Low battery indication

Symbol  indicate low battery

Data Storage


SD memory card is optional)

  • Ø  3328 groups of integrating measuring results only.
  • Ø  3328 groups of statistical results only (‘statistical 1’ and ‘statistical 2’ analysis index are same.)
  • Ø  2663 groups of statistical results only (‘statistical 1’ and ‘statistical 2’ analysis index are different.)



Internal Clock

Error less than 1 min/month

Output Interface

AC Output (full scale): 1.0V AC RMS; Output Impedance: 1k Ω; Connector: φ3.5 mm stereo plug

DC Output: 20mV/dB; Output Impedance: 1k Ω; Connector: DB-9 plug

RS232 Interface: To computer for output some measurement results instantaneous values , also to mini-printer for printing

Transmission speed: 4800, 9600,115200 bps

USB Interface: available and no need device drive.

Allow USB to be controlled via communication commands

Power Supply

4×LR6 alkaline battery or rechargeable batteries

5 V external power supply

Battery Life

Longest time of 30 hours continuously with 4×LR6 alkaline battery


260 (H) x 80 (W) x 30 (D), mm.


0.35 kg. (include batteries)


Type X


Working Temperature: -10 ~ 50 °C

Storing Temperature: -20 ~ 70 °C

Relative Humidity: 25 ~ 90 %


AC adaptor, USB cable, RS232 transmission cable, windscreen, hand strap, windscreen fall prevention rubber, carrying case, U-disk, user’s manual

Bluetooth Module (Optional)

Can communicate with smart phone and realize wireless control sound level meter




Type & Name

Main function

AWA6228+ host


Host hardware part (Don’t include transducer and software), box, transfer software.

Model AWA14601 Preamplifier

Pre-amplify, gain is 0 dB.

Model AWA14423 measuring microphone

1/2", Prepolarized condenser microphone, 10 Hz ~ 20 kHz,  50 mV/Pa.

Windscreen S 80

Reduce the affection of wind

AH40 Mini-printer


Print measuring result, include connecting line, print paper

extension cable with 5, 10 or 20 m

For  AWA14601 and AWA6228+ host

S6228+ -10100 Integral software

The noise integral measuring

S6228+ -10101 Statistics analytical software

The statistical analysis, 24 hours noise monitors automatically.

S6228+ -10202 The OCT analysis software

Noise real-time OCT spectral analysis

S6228+ -10303 The 1/3OCT analysis software

Noise real-time 1/3OCT spectral analysis

S6228+ -10404 The FFT analysis software

Noise real-time FFT spectral analysis

S6228+ -00013 The Noise Dosimeter software

Noise dosimeter measuring

S6228+ -00509 The Data Logging software

Do data logging

S6228+ -00508 The Reverberation Time Measurement software

Reverberation Time Measurement

32G SD memory card& recording

GPS positioning modular

Bluetooth function

Tripod (1.46m Height)


Detalied Images









Company Information



Packaging & Shipping





 (1)Q: How many years have you engaged in electronic instrument industry ?

A: Since 1992,more than 20 years experience.


(2)Q:Are you a manufacturer or a trading company?


A: We are a manufacturer,OEM and ODM service is available.


(3)Q:How about your MOQ ?

A:1 piece for existing type, and 150pcs for custom logo products.

(4)Q:How long of the mass production time ?

A: Normally 20 days;

(5)Q:How many workers in your factory ?

A: More than 100.


(6)Can I have my logo on the products?


A: Of course,you can,any of your own logo,trademark or artwork are warmly-welcomed.


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