公开(公告)号：WO1982001067A1

公开(公告)日：1982-04-01

申请号：PCT/EP1981000073

申请日：1981-06-12

Applicant: BOSCH GMBH ROBERT ,  BAUM H ,  PFIZENMAIER H ,  SCHMIDT E ,  STRAUSS F

Inventor： BOSCH GMBH ROBERT

IPC: G01L09/10

CPC classification number: H03B5/1847 ,  G01L9/007

Abstract: A pressure responsive inductive gauge is proposed having at least a portion of an oscillator coil, this portion determining the frequency and being located at the vicinity of a pressure responsive membrane. When the pressure acts on the membrane (12) the inductivity of the coil (13) and the frequency of the oscillator are changed. The coil (13) has a flat shape and the membrane (12) has a surface of ferrite or of a good conductor material. There are provided two additional oscillators (15, 22) of the same construction with corresponding coils (13, 20) working in identical thermal conditions, one of the oscillators operating on a fixed frequency with the possibility of measuring absolute pressures relative pressures with respect to the atmospheric pressure. The two oscillators may also be pressure dependent. In that case the pressure differential between two media may be measured. Then the output signal is then obtained by mixing. In that case, the oscillators are preferably formed as thin layer elements.

Abstract translation: 提出了一种压力响应电感计，其具有振荡器线圈的至少一部分，该部分确定频率并位于压力响应膜附近。 当压力作用在膜（12）上时，线圈（13）的电感和振荡器的频率发生变化。 线圈（13）具有扁平形状，并且膜（12）具有铁氧体或良好导体材料的表面。 提供两个具有相同结构的附加振荡器（15,22），其中相应的线圈（13,20）在相同的热条件下工作，其中一个振荡器以固定频率工作，可能测量相对于 大气压力。 两个振荡器也可能是压力依赖的。 在这种情况下，可以测量两种介质之间的压力差。 然后通过混合获得输出信号。 在这种情况下，振荡器优选地形成为薄层元件。

公开(公告)号：ZA7407825B

公开(公告)日：1976-01-28

申请号：ZA7407825

申请日：1974-12-09

Applicant: WEBER A ,  SCHWARZKOPF R ,  STRAUSS F ,  BUERGERL RECHTS A BENDER GES D ,  OBERT B

Inventor： BENDER A

IPC: E04C20060101 ,  E04C

公开(公告)号：AR200423A1

公开(公告)日：1974-11-08

申请号：AR25185874

申请日：1974-01-08

Applicant: IND PLASTICAS STRAUSS F SA IND

IPC: B29C20060101 ,  B29C

公开(公告)号：ZA747825B

公开(公告)日：1976-01-28

申请号：ZA747825

申请日：1974-12-09

Applicant: WEBER A ,  SCHWARZKOPF R ,  STRAUSS F ,  BUERGERL RECHTS A BENDER GES D ,  OBERT B

Inventor： BENDER A

IPC: E04C20060101 ,  E04C