ISO11820
The ISO 11820 standard outlines techniques for determining the sound power levels of noise sources connected to mobile machinery that is not used on roads. In order to ensure compliance with pertinent noise regulations, this standard focuses on assessing the acoustic performance of various machinery types used in forestry, agriculture, and construction.
Use of ISO11820:
Acoustic Performance Evaluation: This method is used by engineers and manufacturers to gauge the noise emissions produced by non-road mobile machinery by measuring its sound power levels.
Regulatory Compliance: Promotes quieter operations in delicate environments by helping organizations make sure that machinery complies with national and international noise regulations.
Product Development and Certification: Offers a uniform process for evaluating and approving non-road machinery’s acoustic performance.
Method of ISO11820:
Test Configuration:
Measurements are carried out in situ or in a controlled setting, simulating the machinery’s normal operating conditions.
To guarantee precise measurements of sound emissions, the equipment is positioned in accordance with predetermined guidelines.
Method of Measurement:
Sound Measurement: During different operating conditions (such as idling or accelerating), an array of microphones is used to record sound pressure levels at predetermined distances from the noise source.
Data collection: To document the entire spectrum of noise emissions generated by the machinery, sound levels are recorded.
Monitoring of Background Noise: To make sure that it doesn’t affect the measurements, background noise levels are tracked.
Analyzing Data:
The measured sound pressure levels, which are usually given in decibels (dB), are used to compute the sound power level.
Frequency analysis may be included in the results, offering information on how sound emissions differ at various frequencies.
In order to support adherence to noise regulations, accurately evaluate the noise emissions of non-road mobile machinery, and aid in the development of more efficient and quiet machinery across a range of industries, including agriculture and construction, ISO 11820 is crucial.