DEVICE FOR EXPRESS-ANALYSIS OF PRODUCT QUALITY Russian patent published in 2017 - IPC G01N27/00 

FIELD: measuring equipment.

SUBSTANCE: device for the express-analysis of product quality includes one piezosensor with a sensitive film coating for the sorption of marker gases, built into the support of the detection cell cover, and devices for exciting oscillations, fixing and displaying piezosensor signals. The device detection cell is made in the form of a removable cylinder with a mark limiting the volume of the analyzed samples, the cylinder is hermetically connected with a gas analyzer cover by a nozzle or a thread so that the piezosensor is inside the cylinder and does not contact with a liquid or solid sample, and all parts of the gas analyzer are miniature device for exciting oscillations, a microprocessor for recording the piezosensor signal and a power supply element (accumulator or batteries) are located in the same housing above the analyzer cover and connected to the signaling device, which operation is determined by change rate of piezosensor signal during sorption of marker gases of the gas phase over the liquid or solid sample, depending on their concentration and indicating the quality of the analyzed object, on one of the side surfaces of the power supply unit a switch of smooth trigger threshold establishment of the signaling device, preobtained by test-sample, a push button and a device availability indicator are placed, in the bottom part of the body ouputs for a charging device and a bar for connection with the detector are placed. The analysis time for liquid and solid samples is 15-30 seconds, and piezosensors are reconstructed and stored in a miniature tank with a sorbent on the bottom.

EFFECT: increased assortment of analyzed products, reduced energy consumption, increased mobility and compactness of the proposed device, reduced analysis time.

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