Application of Multi functional Portable Sound Level Meter

AWA6228+typeAihua multifunctional sound level meterIt is a new generation noise measurement instrument that adopts digital signal processing technology. As an upgraded product of AWA6228, it has significantly improved in measurement range, function, power consumption, and user experience. This instrument is equipped with a color screen LCD display, supports multiple parallel measurement modes, and is suitable for a wide range of noise measurement scenarios. Supports parallel (simultaneous) frequency weighting for A, C, and Z, as well as parallel (simultaneous) time weighting for F, S, and I, allowing for simultaneous measurement of multiple evaluation metrics. Multiple analysis functions, including statistics, integration, 1/1 OCT, 1/3 OCT, FFT, and digital recording, can be started synchronously or asynchronously. Modular design allows users to select different functional modules according to their needs and flexibly customize instrument functions.

AWA6228+typeAihua multifunctional sound level meterTechnical advantages:

• High precision measurement: using digital signal processing technology to ensure the accuracy and reliability of measurement results.

• Multi functional integration: One instrument integrates multiple measurement and analysis functions, reducing equipment configuration costs.

• User friendly: Color screen display and modular design enhance operational convenience and flexibility.

• Wide applicability: Meet the needs of multiple fields such as environmental protection, labor hygiene, industrial enterprises, and scientific research and teaching.

• The AWA6228+multifunctional sound level meter has become a tool in the field of noise measurement due to its large measurement range, multifunctional integration, low-power design, and modular configuration. Whether it is environmental noise monitoring, industrial equipment noise assessment, or building acoustic measurement, AWA6228+can provide efficient and accurate solutions to meet the diverse measurement needs of users.

AWA6228+multifunctional sound level meterMain functional features:

2.1 Large measurement range

Linear range: greater than 122dB (A), with a measurement range of greater than 112dB (A) for each high and low range.

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

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

Microphone sensitivity adjustment: Users can adjust the measurement range according to different sensitivity microphones.

2.2 High resolution color screen display

Screen size: 2.6-inch color screen.

Resolution: 240 × 320.

Display effect: readable under sunlight, backlight brightness supports automatic adjustment or manual 46 level adjustment.

Display content: Rich measurement data and charts.

2.3 Data Storage

Standard storage: 3MB, can store up to 3328 sets of integral measurement results.

Extended storage: Supports 32GB SD card (optional) to meet the needs of large capacity data storage.

2.4 Quick Settings

Intelligent configuration: After selecting the applicable standard or measurement method, the instrument automatically sets the relevant analysis mode and parameters, and turns off unnecessary functions, making it convenient to use and saving electricity.

2.5 Power Management

Automatic switching between battery and external power supply: Supports 4 LR6 alkaline batteries or DC 5V ± 0.5V, 1A external power supply.

Battery life: It can work continuously for about 30 hours at low range (backlight brightness of 25), and can be extended to more than 36 hours when the backlight is turned off.

High power mode: When FFT, 1/1OCT, 1/3OCT, recording, Bluetooth or GPS functions are enabled, power consumption will increase.

2.6 Startup Method

Supports multiple startup methods: key start, over limit start, timed start, and equidistant start.

2.7 Automatic power on/off

Support timed automatic power on/off function, suitable for long-term monitoring tasks.

2.8 Optional Function Modules

• GPS positioning system (optional): measures noise while obtaining accurate position information and motion speed.

• Bluetooth module (optional): supports wireless printing of measurement results or instrument operation through mobile phones.

• Micro printer (optional): on-site printing of measurement results.

• GSM wireless data transmission module (optional): Send measurement results to mobile phones or computers via SMS.

• Solar cell module (optional): Supports long-term outdoor work.

Main technical specifications of AWA6228+multifunctional sound level meter:

3.1 Microphone combination

Type: Φ 12.7mm (1/2 ") pre polarized test condenser microphone+AWA14601 preamplifier.

Standard sensitivity level: -28dB (with 1V/Pa as reference 0dB).

3.2 Range of Sound Pressure Level Measurement

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

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

Attention: When the sensitivity of the microphone is different, the measurement range will shift as a whole. Please refer to the instrument display for details.

3.3 Frequency Range：10Hz～20kHz。

3.4 Local mechanical and electrical noise:

Low range: less than 12dBA, 17dBC, 22dBZ.

High range: less than 23dBA, 27dBC, 32dBZ.

3.5 A/D bits:

Number of digits: 24.

3.6 Sampling frequency:

Frequency: 48kHz.

3.7 Detection characteristics:

Type: True Significant Value Digital Detection.

3.8 Execution standards:

Sound level meter standard: GB/T 3785-2010 Class 1/IEC 61672:2013 Class 1.

Filter standard: GB/T 3241-2014 Class 1/IEC 61260:2014 Class 1.

3.9 Calendar Clock:

Accuracy: The monthly error is less than 1 minute.

Function: Supports GPS timing and calibration, with built-in backup battery.

The AWA6228+multifunctional sound level meter has become a tool in the field of noise measurement due to its large measurement range, high precision, multifunctional integration, and intelligent design. Whether it is environmental noise monitoring, industrial equipment noise assessment, or building acoustic measurement, AWA6228+can provide efficient and accurate solutions to meet the diverse measurement needs of users. Its rich optional functions (such as GPS, Bluetooth, GSM modules, etc.) further expand the application scenarios and practicality of the instrument.