GB559149A - Improvements in pressure and like gauges - Google Patents

Improvements in pressure and like gauges

Info

Publication number
GB559149A
GB559149A GB1069442A GB1069442A GB559149A GB 559149 A GB559149 A GB 559149A GB 1069442 A GB1069442 A GB 1069442A GB 1069442 A GB1069442 A GB 1069442A GB 559149 A GB559149 A GB 559149A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
bellows
pressure
attached
connected
negretti
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
GB1069442A
Original Assignee
Henry Noel Negretti
Paul Ernest Negretti
John Thomas Miller
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

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00Measuring steady or quasi-steady pressure of a fluid or a 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
    • G01L9/0033Transmitting or indicating the displacement of bellows by electric, electro-mechanical, magnetic, or electro-magnetic means
    • G01L9/0036Transmitting or indicating the displacement of bellows by electric, electro-mechanical, magnetic, or electro-magnetic means using variations in inductance

Abstract

559,149. Measuring pressure. NEGRETTI, H. N., NEGRETTI, P. E., and MILLER, J. T. July 30, 1942, No. 10694. [Class 40 (i)] [Also in Group XIX] A pressure gauge which may be a fuel pressure gauge for use on aircraft, comprises in combination a stack of diaphragms or bellows attached at one end to a pressure chamber, a member of magnetic material attached to the free end of the bellows, a coil with which the member co-operates, and a Wheatstone bridge circuit in which the coil forms part of one arm, an indicating instrument is arranged across one diagonal and an alternating current is connected across the other diagonal. As shown in Fig. 1 a stack of diaphragms of bellows A is enclosed in a chamber CH with an inlet pipe ia connected to the source of pressure. The bellows A is situated over an outlet aperture oa in a fluid tight manner and attached to the bellows is a soft iron core CO which extends into a solenoid C constituting one arm of a Wheatstone bridge circuit that has an indicating instrument across one direction and is connected to a source of alternating current. In an alternative form the bellows may be situated over the pressure inlet while the core is attached to the bottom of and outside the bellows.
GB1069442A 1942-07-30 1942-07-30 Improvements in pressure and like gauges Expired GB559149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1069442A GB559149A (en) 1942-07-30 1942-07-30 Improvements in pressure and like gauges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1069442A GB559149A (en) 1942-07-30 1942-07-30 Improvements in pressure and like gauges

Publications (1)

Publication Number Publication Date
GB559149A true true GB559149A (en) 1944-02-07

Family

ID=9972567

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1069442A Expired GB559149A (en) 1942-07-30 1942-07-30 Improvements in pressure and like gauges

Country Status (1)

Country Link
GB (1) GB559149A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466658A (en) * 1946-01-25 1949-04-05 Serdex Inc Hygrometric device
US2531414A (en) * 1947-06-16 1950-11-28 Lenard R Engvall Electrical pressure measuring device
US2637999A (en) * 1946-04-10 1953-05-12 Us Navy Marine wave meter
US2651939A (en) * 1948-12-27 1953-09-15 Comstock & Wescott Apparatus for measuring the contents of large tanks
US2692501A (en) * 1948-04-14 1954-10-26 Vapor Recovery Systems Company Pressure measuring apparatus
US3026729A (en) * 1946-11-04 1962-03-27 Ellis A Johnson Pressure measuring and recording system
US4358956A (en) * 1979-04-13 1982-11-16 Emdee Corporation Liquid level indicator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466658A (en) * 1946-01-25 1949-04-05 Serdex Inc Hygrometric device
US2637999A (en) * 1946-04-10 1953-05-12 Us Navy Marine wave meter
US3026729A (en) * 1946-11-04 1962-03-27 Ellis A Johnson Pressure measuring and recording system
US2531414A (en) * 1947-06-16 1950-11-28 Lenard R Engvall Electrical pressure measuring device
US2692501A (en) * 1948-04-14 1954-10-26 Vapor Recovery Systems Company Pressure measuring apparatus
US2651939A (en) * 1948-12-27 1953-09-15 Comstock & Wescott Apparatus for measuring the contents of large tanks
US4358956A (en) * 1979-04-13 1982-11-16 Emdee Corporation Liquid level indicator

Similar Documents

Publication Publication Date Title
US2400467A (en) Fluid pressure responsive device
GB831692A (en) Improvements in or relating to the measurement of the electrical conductance of liquids
US3444736A (en) Square root responsive pressure transducers
US2449556A (en) Differential leakage indicator
US2226275A (en) Magnetic thickness gauge
US2509644A (en) Differential pressure gauge
US2362446A (en) Apparatus for indicating pressure changes over time intervals
US2531145A (en) Electrical resistance measurement
US3494190A (en) Fluid flow transducer
GB811347A (en) Improvements in or relating to devices for measuring liquid flow
DE2553454A1 (en) Permanent magnet indicator for gas or fluid flow - has two permanent magnets of opposite polarity placed close together along pipe and measuring piston
US2749746A (en) Magnetostriction strain gauge
US2405199A (en) Fluid pressure gauge
US2867118A (en) Transducer and stress measuring means
US3477276A (en) Differential pneumatic measuring or servo devices
US2202900A (en) Indicating apparatus
US2460076A (en) Electromagnetic pressure gauge
US2454946A (en) Pressure transmitting instrument
US2208910A (en) Device for measuring lengths
US3336555A (en) Unfilled pressure transducer with strain gage sensing means
GB367284A (en) Improvements relating to diaphragm pressure regulators
GB673143A (en) Improvements in means for measuring and regulating the flow of a fluid
JPS57192805A (en) Differential feedback type eddy current distance meter
US2207747A (en) Velocity meter
US3096646A (en) Flow meter