STRAIN-GAUGE DISPLACEMENT TRANSDUCER Russian patent published in 2018 - IPC G01B7/16 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment, particularly to means of displacement measurement. Essence: strain-gauge displacement transducer comprises a rigid, non-deformable case with a guide hole, in which a measuring tip connected to the sensor element in the form of an elastic deformation ring fixed in the housing is placed with the possibility of reciprocating movement. On the outer and inner surfaces of the ring in the circumferential direction, at the point lying on its axis perpendicular to the tip axis, two strain gauges are glued against each other. Strain gages are thermo-compensated for the elastic deformation ring material and are connected according to the measuring half-bridge scheme. Output of one of the strain gauges is connected to a copper wire to which a constant wire is welded with to form a T-type thermocouple, the outputs of which are outputs of the displacement transducer.

EFFECT: decreased measurement error over a wide temperature range.

1 cl, 3 dwg