BS ISO 13347-4:2025 - Fans: Determination of Fan Sound Power Levels Under Standardized Laboratory Conditions Using the Sound Intensity Method

Introducing the BS ISO 13347-4:2025, a comprehensive standard that provides a detailed methodology for determining the sound power levels of fans under standardized laboratory conditions using the sound intensity method. This standard is an essential resource for professionals in the field of acoustics, fan manufacturing, and environmental noise assessment.

Overview

The BS ISO 13347-4:2025 is a crucial document for anyone involved in the design, testing, and evaluation of fans. It outlines a precise method for measuring the sound power levels of fans, ensuring consistency and accuracy in results. This standard is part of a series that addresses various aspects of fan performance and noise measurement, making it an indispensable tool for engineers and technicians.

Key Features

• Standard Number: BS ISO 13347-4:2025
• Pages: 40
• Release Date: July 17, 2025
• ISBN: 978 0 539 28745 5
• Status: Standard

Why Choose BS ISO 13347-4:2025?

This standard is designed to provide a reliable and repeatable method for determining the sound power levels of fans. By using the sound intensity method, it allows for accurate measurements even in environments where traditional sound pressure methods may be less effective. This makes it particularly useful for applications where precision is critical.

Benefits of Using the Sound Intensity Method

The sound intensity method offers several advantages over traditional sound pressure methods:

• Direct Measurement: Sound intensity is measured directly, providing more accurate results in complex acoustic environments.
• Reduced Background Noise Influence: This method is less affected by background noise, making it ideal for use in environments where noise control is challenging.
• Flexibility: It can be used in a variety of settings, from small test chambers to large industrial spaces.

Applications

The BS ISO 13347-4:2025 standard is applicable across a wide range of industries and applications, including:

• Fan Manufacturing: Ensures that products meet noise regulations and performance standards.
• Building Acoustics: Helps in designing quieter HVAC systems for residential and commercial buildings.
• Environmental Noise Assessment: Assists in evaluating the impact of fan noise in various environments.

Who Should Use This Standard?

This standard is ideal for:

• Acoustic Engineers: Professionals involved in noise measurement and control.
• Product Designers: Engineers designing fans and ventilation systems.
• Quality Assurance Teams: Ensuring compliance with noise regulations and standards.

Conclusion

The BS ISO 13347-4:2025 is an essential standard for anyone involved in the measurement and control of fan noise. Its detailed methodology and focus on the sound intensity method make it a valuable tool for achieving accurate and reliable results. Whether you are in fan manufacturing, building acoustics, or environmental noise assessment, this standard will help you meet your noise measurement needs with confidence.

Stay ahead in your field by incorporating the BS ISO 13347-4:2025 into your practices and ensure that your products and projects meet the highest standards of noise measurement and control.

BS ISO 13347-4:2025

This standard BS ISO 13347-4:2025 Fans. Determination of fan sound power levels under standardized laboratory conditions is classified in these ICS categories:

• 17.140.20 Noise emitted by machines and equipment
• 23.120 Ventilators. Fans. Air-conditioners