GB1340703A - Transducers for measuring apparatus - Google Patents

Transducers for measuring apparatus

Info

Publication number
GB1340703A
GB1340703A GB1340703DA GB1340703A GB 1340703 A GB1340703 A GB 1340703A GB 1340703D A GB1340703D A GB 1340703DA GB 1340703 A GB1340703 A GB 1340703A
Authority
GB
United Kingdom
Prior art keywords
arrangement
diaphragms
april
pair
movement
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Publication of GB1340703A publication Critical patent/GB1340703A/en
Expired legal-status Critical Current

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
    • G01L1/144—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 with associated circuitry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
    • G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
    • G01L13/025—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using diaphragms
    • 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
    • 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
    • G01L9/12—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 by making use of variations in capacitance, i.e. electric circuits therefor
    • G01L9/125—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 by making use of variations in capacitance, i.e. electric circuits therefor with temperature compensating means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/006—Details of instruments used for thermal compensation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/125—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by capacitive pick-up

Abstract

1340703 Alarm systems UNITED KING- DOM ATOMIC ENERGY AUTHORITY 19 April 1971 [22 April 1970] 19401/70 Heading G4N [Also in Division G1] A pair of capacitances 121, 131 and 122, 132, whose values vary equally and oppositely on the movement of a displaceable member, are connected in parallel circuits with charge amplifiers 231, 232 and fed with a 20 KH 3 signal, the differential output obtained from amplifier 25 being filtered and applied to a phase sensitive demodulating arrangement and applied to a meter 29. The arrangement may be used to determine the lateral position of body in a shaft, e.g. a fuel element in a nuclear reactor, Fig. 1b, and the capacitance variation may arise by the movement of the plates 121, 122, 131, 132 relative to an earthed plate 14/15, connections being made by long cables 12, 13, the former of which may be thermocouple cab e connected to a circuit 32 providing a temperature compensated signal at P. A fluid pressure transducer is disclosed (Fig. 4, not shown) in which a pair of diaphragms 41, 42 define 3 chambers 43, 44, 45, and push rods bear against a beam carrying capacitor plates which are associated with fixed plate. The use of bellows or diaphragms is envisaged. The arrangement may be utilized as a burglar alarm, or as an air humidity detector.
GB1340703D 1970-04-22 1970-04-22 Transducers for measuring apparatus Expired GB1340703A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1940170 1970-04-22

Publications (1)

Publication Number Publication Date
GB1340703A true GB1340703A (en) 1973-12-12

Family

ID=10128747

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1340703D Expired GB1340703A (en) 1970-04-22 1970-04-22 Transducers for measuring apparatus

Country Status (1)

Country Link
GB (1) GB1340703A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053169A1 (en) * 1980-06-12 1982-06-09 Rosemount Inc. Isolating apparatus for a pressure sensor flange
DE3138273A1 (en) * 1980-09-26 1982-10-21 Hiroomi Yamakitamachi Kanagawa Ogasawara TOUCH-FREE MICRO SHIFT MEASURING DEVICE
US4491784A (en) * 1982-08-31 1985-01-01 The Babcock & Wilcox Company Piezoelectric moisture measuring device
GB2145231A (en) * 1983-08-16 1985-03-20 Atomic Energy Authority Uk Capacitive gauging apparatus
EP0568494A1 (en) * 1992-04-27 1993-11-03 K.K. Holding Ag Capacitive acceleration measuring system
CN103900757A (en) * 2014-03-24 2014-07-02 西北工业大学 Method for conducting temperature correction on underwater thermosensitive shearing stress sensor
CN101849170B (en) * 2007-11-08 2014-09-10 罗斯蒙特公司 Pressure sensor

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053169A1 (en) * 1980-06-12 1982-06-09 Rosemount Inc. Isolating apparatus for a pressure sensor flange
EP0053169A4 (en) * 1980-06-12 1983-10-04 Rosemount Inc Isolating apparatus for a pressure sensor flange.
DE3138273A1 (en) * 1980-09-26 1982-10-21 Hiroomi Yamakitamachi Kanagawa Ogasawara TOUCH-FREE MICRO SHIFT MEASURING DEVICE
US4491784A (en) * 1982-08-31 1985-01-01 The Babcock & Wilcox Company Piezoelectric moisture measuring device
GB2145231A (en) * 1983-08-16 1985-03-20 Atomic Energy Authority Uk Capacitive gauging apparatus
US4658254A (en) * 1983-08-16 1987-04-14 United Kingdom Atomic Energy Authority Gauging apparatus
EP0568494A1 (en) * 1992-04-27 1993-11-03 K.K. Holding Ag Capacitive acceleration measuring system
CN101849170B (en) * 2007-11-08 2014-09-10 罗斯蒙特公司 Pressure sensor
CN103900757A (en) * 2014-03-24 2014-07-02 西北工业大学 Method for conducting temperature correction on underwater thermosensitive shearing stress sensor
CN103900757B (en) * 2014-03-24 2016-03-02 西北工业大学 A kind of the method for temperature adjustmemt is carried out to temperature-sensitive shear stress sensor under water

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee