Title :
Optical barrier and 4-quadrant imaging for contact-less detection of geometrical dimension of a steam turbine
Author :
Pesatori, A. ; Norgia, M. ; Svelto, C. ; Pignone, E.
Author_Institution :
Dipt. Elettron. e Inf., Politec. di Milano, Milan
Abstract :
An optical instrument for precise measurement of steam turbines radial size was successfully designed and realized. This system is very useful for on-line monitoring during turbine fabrication of the external palette radial length with high accuracy. The prototype instrument allows a measurement accuracy of 3 mum over a dynamic range of 0.3 mm.
Keywords :
length measurement; semiconductor lasers; steam turbines; contact-less detection; external palette radial length measurement; four-quadrant imaging; optical barrier; optical instrument; prototype instrument; semiconductor red laser diode; steam turbine; Dynamic range; Geometrical optics; Instruments; Monitoring; Optical design; Optical device fabrication; Optical imaging; Prototypes; Size measurement; Turbines; laser measurement applications; length measurement; optical measurements; steam turbines;
Conference_Titel :
Imaging Systems and Techniques, 2008. IST 2008. IEEE International Workshop on
Conference_Location :
Crete
Print_ISBN :
978-1-4244-2496-2
Electronic_ISBN :
978-1-4244-2497-9
DOI :
10.1109/IST.2008.4659953
