MECHANICAL QUANTITIES MEASURING DEVICE (VERSIONS) AND METHOD OF ITS PRODUCTION Russian patent published in 2009 - IPC G01L9/04 H01L21/34 

FIELD: physics, measurement.

SUBSTANCE: invention relates to inspection equipment. The device is a strain transducer comprising a metal casing made as a cylindrical shell with thin bottom in the form of a diaphragm; surface of the latter is fitted with strain gages, commutation sections that assemble the strain gages into a measurement bridge and connect them to metallised sectors at the periphery of the shell bottom surface, compensating elements and an insulation layer. The strain gages from samarium monosulfite are fixed on the dielectric layer from aluminium oxide or silicon oxide or silicon dioxide; this layer is fitted on the outer shell bottom surface through an adhesive chrome layer. Separate strain gages set distantly and circumferentially or strain gage groups set distantly and circumferentially are fixed in the compression zones at the annular transition of the diaphragm into the shell wall and in the stretching zones in the diaphragm central part. Metallised sectors consist of at least two layers: the lower one having minimal transient electrical resistance and the upper one aimed at soldering.

EFFECT: increasing the device sensitivity, resistance to corrosive media and reliability.

5 cl, 6 dwg