| 摘要 |
An ultrasonic instrument system (10) for measurement of fluid level in a horizontal run of pipe, comprising a horizontal run of pipe (12) having inner (42) and outer (36) surfaces defining a wall thickness therebetween, the pipe being constituted by a first material (32) which is internally clad with a second material (38); an inspection plug (46) of substantially uniform material composition imbedded in the pipe wall and having an inner end (48) at the inner surface of the pipe and extending outwardly to at least the outer surface of the pipe; an ultrasonic transducer (52) mounted on the outer end (50) of the inspection plug, for launching an ultrasonic beam (54) through the plug and onto fluid in the pipe, and for detecting a reflected ultrasonic beam (56) from the fluid in the pipe; and a processor (58) connected to the ultrasonic transducer and responsive to characteristics of the launched beam and reflected beam, for generating a signal (18) commensurate with the fluid level (44) in the pipe.
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