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Description / Abstract:
This Standard applies to ultrasonic flowmeters that base their
operation on the measurement of transit time of acoustic signals.
This Standard concerns the volume flow-rate measurement of a
single-phase liquid 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 transit-time ultrasonic flowmeters
(b) a guideline to expected performance characteristics
of transit-time ultrasonic flowmeters
(c) a description of calibration, verification, and
diagnostic procedures
(d) a description of potential uncertainty sources and
their reduction
(e) a common set of terminology, symbols, definitions,
and specifications