METHOD OF CONTACTLESS MEASUREMENT OF DEVIATION FROM THE NOMINAL VALUE OF THE INTERNAL DIMENSIONS OF METAL AND DEVICE FOR IMPLEMENTATION Russian patent published in 2016 - IPC G01B15/00 

FIELD: control and measuring devices.

SUBSTANCE: invention relates to non-destructive testing of products, namely to devices for non-contact measurement of deviations from the nominal values of the internal dimensions of metal products using electromagnetic radiation microwave, and can be used in machinery, tube rolling and chemical industries. To solve this problem, a method for its implementation, as well as a device containing autodyne microwave generator coupled to the selection autodyne signal and the first shoulder of three-arm circulator, the first and second two-way radio antenna, and a second shoulder of three-arm circulator connected to the first antenna system, the radiation pattern is directed to the first local area control of the internal surface of the product, and the third shoulder three-arm circulator - the second transceiver antenna radiation pattern is directed to the second local area control of the internal surface of the product opposed to the first local area.

EFFECT: technical result - improved accuracy of measurement of internal dimensions.

4 cl, 2 dwg