BS EN 61043 is an international standard that discusses using electroacoustics techniques for sound intensity testing.
BS EN 61043 describes the specifications to meet the requirements, where instruments are required to analyze the sound intensity in one-third octave or octave bands, and optionally to provide A-weighted band levels. They are also required to measure sound pressure levels, in addition, to sound intensity levels to facilitate the use of the field indicators described in ISO 9614-1.
BS EN 61043 only applies to instruments that detect sound intensity by pairs of spatially separated pressure sensing microphones.
BS EN 61043 specifies performance requirements for instruments used for the measurement of sound intensity and their associated calibrators.
BS EN 61043 on sound intensity testing instruments is relevant to:
Sound intensity instruments have two main applications. The first is the investigation of the radiation characteristics of sound sources. The second is the determination of the sound power of sources, especially in situ, where the sound intensity measurement enables sound power determination to be made under acoustical conditions which render determination by sound pressure measurement impossible.
BS EN 61043 specifies the requirements for sound intensity instruments, comprising sound intensity probes and processors, which detect sound intensity by pairs of spatially separated pressure sensing microphones.
BS EN 61043 applies to instruments to be used for the determination of sound power in accordance with the requirements of ISO 9614-1 and ensures well-defined performance for instruments used in other applications.
BS EN 61043 gives specifications and tolerances, based on current instrument technology and on typical industrial requirements for the dynamic capability index. It specifies type tests and requirements for the verification of the performance of probes and processors.
BS EN 61043 lays out a scheme for periodic verification, serving as the basis of the periodic recalibrations required in many countries. Also, probes and processors are treated separately and together; in the latter case they are called “instruments.”
BS EN 61043 serves the purpose to ensure the accuracy of measurements of sound intensity applied to the determination of sound power in accordance with ISO 9614-1. It also discusses the performance verification of sound intensity probes.
Overall, BS EN 61043 is useful as it provides guidance on the instruments for the measurement of sound intensity with pairs of pressure sensing microphones that can be beneficial for your business and can help you to expand your business globally.
IEC 61043:1993