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SE7503078L - CAPACITIVE POWER SENSING BODY. - Google Patents

CAPACITIVE POWER SENSING BODY.

Info

Publication number
SE7503078L
SE7503078L SE7503078A SE7503078A SE7503078L SE 7503078 L SE7503078 L SE 7503078L SE 7503078 A SE7503078 A SE 7503078A SE 7503078 A SE7503078 A SE 7503078A SE 7503078 L SE7503078 L SE 7503078L
Authority
SE
Sweden
Prior art keywords
diaphragm
april
housing
supporting
cup
Prior art date
Application number
SE7503078A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE412956B (en
Inventor
R L Frick
R L Geronime
Original Assignee
Rosemount Inc
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 Rosemount Inc filed Critical Rosemount Inc
Publication of SE7503078L publication Critical patent/SE7503078L/en
Publication of SE412956B publication Critical patent/SE412956B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/14—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
    • G01L1/142—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1497212 Capacitive force sensor ROSEMOUNT Inc 2 April 1975 [4 April 1974 (2)] 13498/75 Heading G1N A capacitive load or pressure sensor includes a housing 11 supporting a diaphragm 13 deflecting due to pressure applied to it by way of a fitting 14, the diaphragm having a cup 27 welded to it which cup supports a plate 26 having electrically conductive surface of diaphragm 13 a capacitance varying with variation of the spacing between these surfaces as the diaphragm deflects. A differential pressure transducer uses two such plates Fig. 2 (not shown). The embodiment of Fig. 3 provides free edge diaphragm construction wherein a ring wall 71 supports diaphragm 72 from a housing 70, the diaphragm mounting a capacitor plate 75 from a lug 73 and also having a button 80 on its upper surface for supporting a load.
SE7503078A 1974-04-04 1975-03-18 CAPACITIVE SENSING DEVICE SE412956B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45769874A 1974-04-04 1974-04-04
US45769774A 1974-04-04 1974-04-04

Publications (2)

Publication Number Publication Date
SE7503078L true SE7503078L (en) 1975-10-06
SE412956B SE412956B (en) 1980-03-24

Family

ID=27038707

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7503078A SE412956B (en) 1974-04-04 1975-03-18 CAPACITIVE SENSING DEVICE

Country Status (5)

Country Link
JP (1) JPS5814610B2 (en)
DE (1) DE2514511C2 (en)
FR (1) FR2266878B1 (en)
GB (1) GB1497212A (en)
SE (1) SE412956B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975719A (en) * 1975-01-20 1976-08-17 Rosemount Inc. Transducer for converting a varying reactance signal to a DC current signal
US4320667A (en) * 1978-10-17 1982-03-23 Lucas Industries Limited Load transducer
US4295376A (en) * 1978-12-01 1981-10-20 Besco Industries, Inc. Force responsive transducer
GB2101331A (en) * 1981-06-29 1983-01-12 Bendix Corp Capacitive differential pressure transducer
JPS59145940A (en) * 1983-02-08 1984-08-21 Yokogawa Hokushin Electric Corp Differential pressure and pressure transmitting device
JPH0666478B2 (en) * 1984-02-09 1994-08-24 横河電機株式会社 Pressure sensor
US4555952A (en) * 1984-06-08 1985-12-03 Borg-Warner Corporation Differential pressure sensor
JPH0718986Y2 (en) * 1988-07-19 1995-05-01 株式会社トーキン High-sensitivity capacitive load detector
JPH0718987Y2 (en) * 1988-08-17 1995-05-01 株式会社トーキン Capacitive load sensor
DE3908544A1 (en) * 1989-03-16 1990-09-20 Vdo Schindling LOAD SENSOR FOR A MOTOR VEHICLE
GB2240397A (en) * 1990-01-27 1991-07-31 Dobson Park Ind Capacitive transducer
US5542300A (en) * 1994-01-24 1996-08-06 Setra Systems, Inc. Low cost, center-mounted capacitive pressure sensor
DE19653427A1 (en) * 1996-12-20 1998-07-02 Siemens Ag Force sensor
US5911162A (en) * 1997-06-20 1999-06-08 Mks Instruments, Inc. Capacitive pressure transducer with improved electrode support
DE10101973B4 (en) * 2001-01-17 2007-10-04 Pacifica Group Technologies Pty Ltd Force sensor for measuring a force in the force flow
US7353713B2 (en) 2003-04-09 2008-04-08 Loadstar Sensors, Inc. Flexible apparatus and method to enhance capacitive force sensing
US7570065B2 (en) 2006-03-01 2009-08-04 Loadstar Sensors Inc Cylindrical capacitive force sensing device and method
US7343814B2 (en) 2006-04-03 2008-03-18 Loadstar Sensors, Inc. Multi-zone capacitive force sensing device and methods
US20200254985A1 (en) * 2019-02-12 2020-08-13 The Goodyear Tire & Rubber Company Brake pressure sensor for determination of braking efficiency

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3691842A (en) * 1970-09-08 1972-09-19 Beckman Instruments Inc Differential pressure transducer

Also Published As

Publication number Publication date
DE2514511C2 (en) 1986-01-23
GB1497212A (en) 1978-01-05
FR2266878A1 (en) 1975-10-31
DE2514511A1 (en) 1975-10-30
SE412956B (en) 1980-03-24
JPS50142081A (en) 1975-11-15
FR2266878B1 (en) 1981-09-25
JPS5814610B2 (en) 1983-03-19

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