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AWA6021A/L Class 1 Acoustic Sound Calibrator
Sound Level Calibrator
From Sound Level Meters and Acoustic Imagers to Calibrators and sound level sensor for professional testing and research.
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AWA6021A/L Class 1 Acoustic Sound Calibrator

Class 1 high accuracy compliance: Meets IEC 60942:2017 Class 1 standard for reliable calibration of sound level meters.

Dual-level calibration signals: Provides stable 94 dB and 114 dB reference sound pressure levels.

Highly stable output: Uses acoustic negative feedback technology for consistent and drift-free performance.

No environmental correction needed: Stable operation without compensation for temperature or atmospheric pressure changes.

Fast stabilization: Ready for accurate calibration in less than 15 seconds.

Wide compatibility: Supports 1", 1/2", and 1/4" microphone sizes for versatile use.

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    01

    Product Description

    The AWA6021A/L sound calibrator uses acoustic negative feedback technology, resulting in highly stable sound pressure levels without the need for corrections to temperature and atmospheric pressure changes. It is available in 94 dB and 114 dB sound pressure levels, and is small, lightweight, stable, and easy to use. Its performance meets the technical requirements of IEC60942:2017 for Class 1 sound calibrators and can be used for sound pressure level calibration of Class 1 and Class 2 sound level meters.

    Product Video

    Features

    IEC 60942:2017 Class 1 compliance: Ensures high-precision calibration for Class 1 and Class 2 sound level meters. 
    Stable dual-level output: Provides accurate 94 dB and 114 dB reference sound pressure levels. 
    Acoustic negative feedback technology: Maintains highly stable and consistent output performance.
    No environmental compensation required: No correction needed for temperature or atmospheric pressure changes.
    Fast stabilization time: Reaches stable output in less than 15 seconds.
    Low distortion performance: Harmonic distortion ≤1.0%, total distortion ≤2.5%.
    Wide microphone compatibility: Supports 1”, 1/2”, and 1/4” microphone sizes.
    Portable compact design: Small 72×72×72 mm body, lightweight and easy to carry.
    Battery-powered operation: Uses 2×AA batteries with up to 7 hours continuous use.
    Wide operating environment range: Works reliably from -10°C to +50°C with flexible field usability.

    Main Performance Indicators

    Product Model

    AWA6021A/L Sound Calibrator

     

    Standard Implemented

     

    IEC 60942:2017

    Accuracy

      Class 1

    Sound pressure level

     114.0 dB and 94.0 dB (referenced to 2 × 10⁻⁵ Pa)

     

    Frequency Range

    1000 Hz

    Harmonic distortion

     ≤1.0%

    Total distortion

    ≤2.5%

    Power Supply

    2 × 1.5V alkaline batteries (LR6/AA); maximum continuous usage time: 7 hours.

    Stabilization time

    Less than 15 s

    Overall dimensions

      72*72*72

    Compatible microphone size

     1”,1/2”,1/4”

    Operating Environment

    Temperature range: -10°C to +50°C

     

    Relative humidity: 25% to 90%

     

    Atmospheric pressure: 65 kPa to 108 kPa

    application

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