Workplace noise is more than just an annoyance. Prolonged exposure can lead to permanent hearing damage, reduced concentration, and serious long-term health risks. Occupational noise monitoring is not simply about meeting regulatory requirements — it is about creating safer, healthier environments for every worker.

By accurately measuring noise exposure levels and time-weighted averages, Aihua Instruments helps safety professionals and employers gain a clear picture of real-world noise exposure throughout the working day. Reliable data enables smarter noise control decisions, better protection for workers, and full regulatory compliance.

Applicable Standards & Regulations

• Noise exposure at work in accordance with 2003/10/EC and ISO 9612

• Compliance with the Control of Noise at Work Regulations 2005

• Health standard compliance verification per ISO 1999

• Daily noise exposure level LEX,8h determination

Daily Noise Exposure Level LEX,8h: Measurement & Calculation

The Noise at Work Directive 2003/10/EC sets clear action limits to protect workers from the risk of noise-induced hearing damage:

Determining the Daily Noise Exposure Level LEX,8h

Steady Noise Environment

When the noise level remains relatively consistent (LAS deviation less than 5 dB), measure the LAeq over a representative period. The resulting LAeq represents the noise exposure level for the full 8-hour working period.

Variable Noise Environment

For workplaces with clearly distinguishable noise levels at different times, measure the LAeq at each level and record the corresponding exposure duration. The LEX,8h, is then calculated by combining all recorded data.

Key Application Areas

• Manufacturing & industrial facilities

• Construction sites

• Mining & heavy industry

• Airports & transportation

Recommended Products

Aihua Instruments offers professional noise dosimeters and sound level meters designed for accurate workplace noise monitoring.    

AWA5920 Personal Noise Dosimeter

  The AWA5920 personal noise dosimeter is designed for occupational noise exposure assessment and workplace hearing protection programs.            

• Compact wearable design for personal monitoring

• Accurate workplace noise exposure assessment

• Suitable for factories, construction, and industrial sites

• Supports occupational health compliance monitoring

           View Details →        

AWA6228+ Multifunction Sound Level Meter

The AWA6228+ multifunction sound level meter provides advanced acoustic analysis capabilities for occupational noise surveys and industrial noise monitoring  

• Comprehensive acoustic measurement functions

• Supports statistical and frequency analysis

• Suitable for industrial and environmental monitoring

• High precision and reliable long-term performance

           View Details →        

AWA5661 Digital Sound Level Meter

The AWA5661 digital sound level meter is ideal for routine workplace noise measurements, environmental monitoring, and general acoustic testing applications.            

• Easy-to-use digital noise measurement solution

• Stable and reliable performance

• Suitable for workplace and environmental monitoring

• Portable design for field measurements

           View Details →