Title :
A new calibration method for ultrasonic clamp-on transducers
Author :
Keitmann-Curdes, O. ; Funck, B.
Author_Institution :
Flexim GmbH, Berlin
Abstract :
Ultrasonic clamp-on flow meters operating with the transit time method use an acoustical calibration factor, which determines the transmission angle in the fluid. This can be measured indirectly by a flow calibration. The result of a flow calibration, however, depends on parameters such as the pipe diameter and the flow profile that are not part of the clamp-on meter being calibrated. A new method is presented that allows for direct determination of this acoustical calibration factor. With this method, transducers can be calibrated for a designated flow range and pipe range independent of calibrated master flow meters, and respective pipes and calibration facilities.
Keywords :
aeroacoustics; calibration; flowmeters; pipe flow; ultrasonic transducers; acoustical calibration factor; flow calibration; flow meter; flow profile; pipe diameter; transit time method; ultrasonic clamp-on transducer; Acoustic measurements; Acoustic testing; Acoustic transducers; Calibration; Costs; Fluid flow measurement; Reproducibility of results; Ultrasonic transducers; Ultrasonic variables measurement; Water resources; Calibration; Clamp-On; Flowmetry;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0125
