FIBRE-OPTIC SENSOR FOR CONTINUOUS MEASUREMENT OF THE VISCOSITY OF A FLUID MEDIUM Russian patent published in 2021 - IPC G01N11/10 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring equipment, more specifically, to apparatuses for continuous determination of the viscosity of fluid media. The claimed fibre-optic sensor for continuous measurement of the viscosity of a fluid medium includes an optical fibre, placed sequentially along the length whereof are a probe in contact with the fluid medium, a power connection element of the probe with a fibre Bragg grating, a fibre Bragg grating, and an optical connection element of the fibre Bragg grating with a recording apparatus. The implementation variants provide for a possibility of recording the Bragg grating at the viscosity measurement temperature, equipping the Bragg grating with a thermostat in order to maintain the temperature thereof at the recording temperature, as well as executing a probe with a specific weight equal to the specific weight of the fluid medium, equipping the probe with an additional attachment and a Bragg grating to compensate for the impact of the temperature.

EFFECT: structural simplification and an increase in the accuracy.

6 cl, 3 dwg