The AWA6022A is a compact Class 2 sound calibrator designed for field calibration and verification of sound level meters, noise dosimeters, measurement microphones and other acoustic measuring instruments.

It generates selectable 94 dB and 114 dB sound pressure levels at 1 kHz, providing a quick and reliable method of checking instrument sensitivity before and after noise measurements.

With automatic atmospheric-pressure compensation, simple push-button operation and support for common measurement microphone sizes, the AWA6022A is an economical calibration solution for workplace noise, occupational hygiene, environmental surveys and general acoustic measurement.

Key Features

• IEC 60942:2017 Class 2 sound calibrator
• GB/T 15173-2026 compliant
• Selectable 94 dB and 114 dB output
• 1,000 Hz calibration frequency
• Sound pressure level accuracy: ±0.4 dB
• Frequency accuracy: ±0.7%
• Automatic atmospheric-pressure compensation
• Stabilisation time of less than 15 seconds
• Automatic shutdown after microphone removal
• Standard support for 1/2" microphones
• Supports 1" microphones by removing the adaptor
• Optional adaptor available for 1/4" microphones
• Compact handheld design
• Powered by standard AA batteries

94 dB & 114 dB Calibration

The AWA6022A provides two selectable calibration levels:

The calibrator starts at 94 dB and can be switched to 114 dB using the 94/114 function control.

Class 2 Calibration

The AWA6022A complies with IEC 60942:2017 Class 2 and is an ideal companion for Class 2 sound measurement instruments.

Typical applications include:

• Class 2 sound level meters
• Personal noise dosimeters
• Workplace noise surveys
• Occupational hygiene
• Machinery noise measurement
• Environmental noise surveys
• Health and safety inspections
• General acoustic measurement

Where a Class 1 calibration system is required, choose the AWA6021A Class 1 Sound Calibrator instead.

Microphone Compatibility

The standard adaptor is designed for commonly used 1/2" measurement microphones.

The AWA6022A can also be used with:

• 1" microphones – by removing the standard adaptor
• 1/4" microphones – using the optional AWA8532 adaptor

Free-Field Microphone Correction

When calibrating a free-field microphone, a small correction may be required depending on the microphone design.

For a typical 1/2" free-field microphone, the specified correction at 1 kHz is -0.2 dB. Therefore, with the calibrator generating 94.0 dB, the connected measuring instrument would typically display approximately 93.8 dB.

Always use the correction specified for the particular microphone being calibrated.

Simple Field Operation

1. Switch the AWA6022A on.
2. Allow the calibration signal to stabilise.
3. Carefully place the calibrator over the measurement microphone.
4. Wait until the indicator confirms a stable output.
5. Perform or verify calibration on the connected instrument.
6. Select 114 dB if the higher calibration level is required.
7. Remove the calibrator when calibration is complete.

When the microphone is removed and the calibrator cavity remains open, the AWA6022A automatically switches off after approximately five seconds.

Technical Specifications

Typical Applications

• Sound level meter field calibration
• Noise dosimeter calibration
• Occupational noise measurement
• Workplace noise surveys
• Environmental noise surveys
• Industrial hygiene
• Machinery and equipment noise
• Health and safety inspections
• Measurement microphone verification

Calibration & Verification

For measurements requiring traceability, the acoustic calibrator itself should also be periodically calibrated.

Periodic metrological calibration—typically once per year—is recommended to maintain the specified sound pressure level accuracy.

Help Me Choose

AWA6021A vs AWA6022A Sound Calibrators

Which One Should I Choose?

Choose the AWA6022A when you primarily use Class 2 sound level meters or noise dosimeters and want a cost-effective field calibrator.

Choose the AWA6021A when you use Class 1 instruments, your procedure specifically requires Class 1 calibration, or you want one calibrator capable of supporting both Class 1 and Class 2 systems.

Help Me Choose

Sound Level Meters

The AWA5636 is the best starting point where Class 2 accuracy is suitable.

Step up to the AWA5662 when Class 1 accuracy is required while keeping the instrument straightforward and cost-effective.

Choose the AWA6228+ where greater configuration flexibility or advanced functions such as FFT, reverberation, detailed frequency analysis or GPS are required.

The AWA6292 is intended for more specialised acoustic applications including advanced frequency analysis, reverberation and STI measurement.

Specialist Instruments

Not sure which model you need? Send us your application, required measurement parameters or applicable standard and our applications team can recommend the most suitable instrument and configuration.

Downloads

Downloads

Download product manuals and operating instructions below.