Ultrasonics. Power measurement. Radiation force balances and performance requirements Ingestion-build-54371 no lot is accepted if

no lot is accepted if the sample from it contains one or more nonconforming items

BS EN 14239 on measurement of ductwork surface area for building ventilation is relevant to:

Integration of nullable value types

plate girders and hollow sections acting compositely with reinforced concrete slab

it does not apply to those pulleys for variable speed drives that have one or more moving flanges

Ultrasonics. Power measurement. Radiation force balances and performance requirements Ingestion-build-54371 no lot is accepted if1 Scope This International Standard specifies a method of determining the total emitted acoustic power of ultrasonic transducers based on the use of a radiation force balance; establishes general principles for the use of radiation force balances in which an obstacle (target) intercepts the sound field to be measured; establishes limitations of the radiation force method related to cavitation and temperature rise; establishes quantitative limitations