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Description / Abstract:
This Standard applies only to ultrasonic flowmeters that base
their operation on the reflection of acoustic waves, frequently
referred to as a Doppler flowmeter. The flow measurement utilizes
either frequency or time domain techniques. This Standard concerns
the volume flow-rate measurement of a liquid dominant fluid with
steady flow or flow varying only slowly with time in a completely
filled closed conduit.
Purpose
This Standard provides a
(a) description of the operating principles employed by the
ultrasonic flowmeters covered in this Standard
(b) guideline to expected performance characteristics of
ultrasonic flowmeters covered in this Standard
(c) description of calibration and diagnostic procedures
(d) description of potential uncertainty sources and their
reduction
(e) common set of terminology, symbols, definitions, and
specifications