SU631811A2 - Piezoquartz sensor of boundary layer gas humidity - Google Patents

Piezoquartz sensor of boundary layer gas humidity

Info

Publication number
SU631811A2
SU631811A2 SU772441776A SU2441776A SU631811A2 SU 631811 A2 SU631811 A2 SU 631811A2 SU 772441776 A SU772441776 A SU 772441776A SU 2441776 A SU2441776 A SU 2441776A SU 631811 A2 SU631811 A2 SU 631811A2
Authority
SU
USSR - Soviet Union
Prior art keywords
electrode
sensor
piezoquartz
plate
boundary layer
Prior art date
Application number
SU772441776A
Other languages
Russian (ru)
Inventor
Юрий Тихонович Смирнов
Анатолий Ефимович Караульник
Валерий Борисович Грузиненко
Original Assignee
Предприятие П/Я Х-5332
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я Х-5332 filed Critical Предприятие П/Я Х-5332
Priority to SU772441776A priority Critical patent/SU631811A2/en
Application granted granted Critical
Publication of SU631811A2 publication Critical patent/SU631811A2/en

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  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Claims (1)

дитс  возбуждающее напр жение. Электрод 8 сосгоиг из двух часгей,- электри чески соединенных между собой, К элект роду 8 в крайних узловых точках 10 и 11 припа ны гибкие гойопроводы 12 и 13, соединенные с металлическими стерж н ми 14 и 15, укрепленными, изол ционной шайбе 16. Поверхность электрода 9 выполнена шероховатой, покрыта влагочувствигельным слоем 17, например .оксиметилированным сополиамидом, и в центральной узловой точке 18 соединена электрически с жесткой струной токоотводом 19 посредством проход щей через ребро кварцевой пластины 1 полосы 2 О металла. . Выполнение пьезокварцевой пластины 1 со скошенными гран ми значительно уменьшает погрешность датчика, так как при этом значительно уменьшаютс  ис- кажени , вносимые этим датчиком а распределение плотности вод ных паров, св занные с нестабильностью потоков газов вблизи кра  пластины. Кроме того, за счет соединени  электрода 8 в крайних узловых точках через гибкие токопроводы 12 и 13 с металлическими стержн ми 14 и 15 исключаютс  нежелательные резонансы и механические напр жени , обусловленные температурными воздействи ми. Формула изобретени  Пьезокварцевый датчик влажности газов пограЕШчного сло  по авт. св. № 491091, отличающийс  тем, что, с целью повышени  точности измерени ,, кварцева  пластина выполнена со скошенными торцовыми и боковыми гран ми, представл ющими собой фас-ки .Dits excitation voltage. Electrode 8 is assembled from two parts — electrically interconnected; flexible end pipes 12 and 13 connected to metal rods 14 and 15 reinforced by insulating washer 16 are attached to electrode 8 at the extreme nodal points 10 and 11. The surface of the electrode 9 is roughened, covered with a moisture-sensitive layer 17, for example, oxymethylated copolyamide, and at the central nodal point 18 is electrically connected to a rigid string of a current collector 19 through a 2 O metal strip passing through the edge of a quartz plate 1. . The implementation of a piezoquartz plate 1 with beveled edges significantly reduces the sensor error, since this significantly reduces the distortion caused by this sensor and the distribution of water vapor density associated with the instability of gas flows near the edge of the plate. In addition, by connecting the electrode 8 at the extreme nodal points through the flexible conductors 12 and 13 with the metal rods 14 and 15, unwanted resonances and mechanical stresses due to temperature effects are eliminated. The invention of the piezoelectric sensor of humidity of gases of the boundary layer according to the ed. St. No. 491091, characterized in that, in order to improve the measurement accuracy, the quartz plate is made with beveled face and side faces, which are facets.
SU772441776A 1977-01-10 1977-01-10 Piezoquartz sensor of boundary layer gas humidity SU631811A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772441776A SU631811A2 (en) 1977-01-10 1977-01-10 Piezoquartz sensor of boundary layer gas humidity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772441776A SU631811A2 (en) 1977-01-10 1977-01-10 Piezoquartz sensor of boundary layer gas humidity

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
SU491091 Addition

Publications (1)

Publication Number Publication Date
SU631811A2 true SU631811A2 (en) 1978-11-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU772441776A SU631811A2 (en) 1977-01-10 1977-01-10 Piezoquartz sensor of boundary layer gas humidity

Country Status (1)

Country Link
SU (1) SU631811A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789804A (en) * 1985-09-17 1988-12-06 Seiko Instruments & Electronics Ltd. Analytical device and method utilizing a piezoelectric crystal biosensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789804A (en) * 1985-09-17 1988-12-06 Seiko Instruments & Electronics Ltd. Analytical device and method utilizing a piezoelectric crystal biosensor

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