PIEZO-RESONANT SUBSTANCE CONCENTRATION SENSOR Russian patent published in 2023 - IPC G01N5/02 G01N27/12 

FIELD: analytical instrumentation.

SUBSTANCE: analytical instrumentation, measuring the concentration of substances in gases or liquids. Invention can be used in industry, in everyday life, for example, to prevent fire and explosion hazards caused by methane leaks, or an increase in the concentration of carbon monoxide, as well as in medicine to determine diseases at an early stage by detecting markers in the air exhaled by a person, for example, acetone in diabetes mellitus. The objective of the invention is to create a highly sensitive sensor that would combine the advantage of using adsorbents with a high steepness of the isotherm in the region of low concentrations of substances, using high-frequency piezoelectric resonators, as well as piezoelectric resonators that would not be affected by the adsorbent as a frequency destabilizing factor.

EFFECT: reducing the sensitivity threshold of sensors for the concentration of substances.

2 cl, 1 dwg