SU474716A1 - Piezoelectric differential pressure transmitter - Google Patents
Piezoelectric differential pressure transmitterInfo
- Publication number
- SU474716A1 SU474716A1 SU1901885A SU1901885A SU474716A1 SU 474716 A1 SU474716 A1 SU 474716A1 SU 1901885 A SU1901885 A SU 1901885A SU 1901885 A SU1901885 A SU 1901885A SU 474716 A1 SU474716 A1 SU 474716A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- differential pressure
- pressure transmitter
- piezoelectric
- piezoelectric differential
- measured
- Prior art date
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Description
С помощью электрической схемы в пьезоэлектрическом резонаторе возбуждаютс собственные колебани , частота которых определ етс по следующей формуле:Using an electric circuit in a piezoelectric resonator, natural oscillations are excited, the frequency of which is determined by the following formula:
VV
тt
где с - жесткость, т - масса.where c is stiffness, t is mass.
При -подаче во внутреннюю полость 3 резонатора измер емого давлени под действием разлости давлений, действующих на наружную и внутренние поверхности резонатора, измер етс его поперечиое сечение, т. е. измен етс его жесткость, а следовательно, и частота его собственных колебаний, по которой и определ ют величину измер емой разности давлений.When the measured pressure is supplied to the internal cavity 3 of the resonator under the action of a pressure gap acting on the external and internal surfaces of the resonator, its cross section is measured, i.e. its stiffness changes, and consequently, the frequency of its natural oscillations, over which and determining the magnitude of the measured pressure difference.
Предмет изобретен и The subject is invented and
Пьезоэлектрический преобразователь разности давлений, содержащий корпус, разделенный на две полости элементом, воспринимающим измер емые давлени , и биморфный ньезоэлемент , включенный в схему генератора, отличающийс тем, что, с делью повышени чувствительности и точности измерени , в нем корпус разделен на две полости биморфным пьезоэлементом, выполненным в виде двух repj метично соединенных по контуру кольцевой прокладкой пьезопластин, одна из которых имеет .центральное отверстие, сообщающее вну треннюю полость шьезоэлемента с .измер елюй средой через OTBeip cTiie в подои стойке, один конец которой жестко за1крбилен на указанной ;п.езопласт.ине, а второй - -на корпусе преобразовател .A piezoelectric differential pressure transducer, comprising a case divided into two cavities by an element perceiving the measured pressures, and a bimorphic neuzoelement included in the generator circuit, characterized in that, in order to increase the sensitivity and accuracy of measurement, the body is divided into two cavities by a bimorphic piezoelectric element A piezo-plate with an annular gasket, made in the form of two repjs, which are intermetrically connected along the contour, one of which has a central opening that communicates the internal cavity of the piezoelectric element with .ism. It is the medium through the OTBeip cTiie in the bottom rack, one end of which is rigidly fixed on the indicated; neoplast, and the other end is on the converter case.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1901885A SU474716A1 (en) | 1973-04-02 | 1973-04-02 | Piezoelectric differential pressure transmitter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1901885A SU474716A1 (en) | 1973-04-02 | 1973-04-02 | Piezoelectric differential pressure transmitter |
Publications (1)
Publication Number | Publication Date |
---|---|
SU474716A1 true SU474716A1 (en) | 1975-06-25 |
Family
ID=20547878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1901885A SU474716A1 (en) | 1973-04-02 | 1973-04-02 | Piezoelectric differential pressure transmitter |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU474716A1 (en) |
-
1973
- 1973-04-02 SU SU1901885A patent/SU474716A1/en active
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