FIELD: measuring equipment.
SUBSTANCE: invention can be used to measure radial clearance between ends of impeller blades and stator shell. Invention consists in that it comprises measuring extreme value of code with measuring converter at passage of centre of end of sensor sensitivity zone of controlled blades, measuring extreme value of code with measuring converter at passage of centre of sensor sensitivity zone centre blade period following controlled blade; radial gap is calculated for controlled blades from difference between two measured extreme values of codes with measuring transducer.
EFFECT: technical result is reducing number of sensors and mounting holes in stator casing, as well as high accuracy of measuring radial clearances.
1 cl, 1 dwg
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