This SAE Recommended Practice establishes the instrumentation and procedure to be used in measuring the operator ear sound level for engine powered equipment under 30 kW (40 bhp). The sound levels obtained by using this procedure are representative of the sound levels generated by the equipment under typical operating conditions. It is intended to include equipment such as lawn mowers, snow blowers, and tillers. It is not intended to include equipment designed primarily for operation on highways or within factories or buildings, or vehicles such as motorcycles, snowmobiles, and pleasure motorboats that are covered by other SAE Standards or Recommended Practices.
This procedure does not cover handheld equipment such as chainsaws, leaf blowers, and trimmers.
This SAE Recommended Practice may also be used when measuring the operator ear sound level of similar equipment powered by electricity or other power sources.
Rationale
This document was revised to allow the use of sound level meters and data acquisition systems conforming to current ANSI and SAE Standards. The updated standard includes the option for testing on an artificial surface or natural turf.
The Small Engine and Powered Equipment Committee is part of the Specialized Vehicle and Equipment Council. The committee is responsible for preparing, reviewing and updating SAE Standards, Recommended Practices and Information Reports that enhance the performance, efficiency, safety, and service of small engines and equipment powered by small engines. Engineering standards activities enable the design, development, application and testing of small engines, equipment, and related components. The committee is actively updating existing documents as well as developing new standards. Small engines are generally defined by the following criteria: 1. Less than 1.0 liter (61 cu. in.) total displacement and 2. Less than 30 Kw (40 hp) power output. The limits established above are not rigidly prescribed, since larger engines may legitimately fall within the committee scope where there is family similarity or other design characteristics in common with engines falling within the above designated limits. Participants in the SAE Small Engine and Powered Equipment Committee include suppliers, consulting firms, government and other interested parties.
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Operator Ear Sound Level Measurement Procedure for Small Engine Powered Equipment
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Operator Ear Sound Level Measurement Procedure for Small Engine Powered Equipment
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