FR2433174A1 - Force transducer for hostile environments - uses electrical strain gauges remote from point of force application to measure deflection of cantilever beam - Google Patents

Force transducer for hostile environments - uses electrical strain gauges remote from point of force application to measure deflection of cantilever beam

Info

Publication number
FR2433174A1
FR2433174A1 FR7823210A FR7823210A FR2433174A1 FR 2433174 A1 FR2433174 A1 FR 2433174A1 FR 7823210 A FR7823210 A FR 7823210A FR 7823210 A FR7823210 A FR 7823210A FR 2433174 A1 FR2433174 A1 FR 2433174A1
Authority
FR
France
Prior art keywords
remote
point
cantilever beam
strain gauges
force
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.)
Granted
Application number
FR7823210A
Other languages
French (fr)
Other versions
FR2433174B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7823210A priority Critical patent/FR2433174A1/en
Publication of FR2433174A1 publication Critical patent/FR2433174A1/en
Application granted granted Critical
Publication of FR2433174B1 publication Critical patent/FR2433174B1/fr
Granted 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
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01L1/2218—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric, adapted for measuring a force along a single direction
    • G01L1/2225—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric, adapted for measuring a force along a single direction the direction being perpendicular to the central axis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/0038—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm using buoyant probes
    • 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
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0002—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using variations in ohmic resistance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The transducer which is remote from its point of application allows measurement of forces in hostile environment, eg. chemically corrosive, high or low pressure. It is also possible to use the device to measure liquid density or level (N) in a container (R) by measuring the upthrust on an immersed body (C). Forces are applied to the end of a cantilever beam (4) which is monolithic and co-axial with a tubular strain unit (P) of specific lengh: diameter (L:D) ratio, wall thickness (e) and elastic stiffness. The unit is isolated by gas tight seals (8) from the measurement area and has electrical strain gauges on its outer walls. For small deflections the electrical output is proportional to the applied force.
FR7823210A 1978-08-07 1978-08-07 Force transducer for hostile environments - uses electrical strain gauges remote from point of force application to measure deflection of cantilever beam Granted FR2433174A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7823210A FR2433174A1 (en) 1978-08-07 1978-08-07 Force transducer for hostile environments - uses electrical strain gauges remote from point of force application to measure deflection of cantilever beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7823210A FR2433174A1 (en) 1978-08-07 1978-08-07 Force transducer for hostile environments - uses electrical strain gauges remote from point of force application to measure deflection of cantilever beam

Publications (2)

Publication Number Publication Date
FR2433174A1 true FR2433174A1 (en) 1980-03-07
FR2433174B1 FR2433174B1 (en) 1983-07-22

Family

ID=9211645

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7823210A Granted FR2433174A1 (en) 1978-08-07 1978-08-07 Force transducer for hostile environments - uses electrical strain gauges remote from point of force application to measure deflection of cantilever beam

Country Status (1)

Country Link
FR (1) FR2433174A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414721A1 (en) * 1978-01-12 1979-08-10 Tecniche Elettroniche Applicat APPARATUS FOR MEASURING LOW WEIGHT FLOW RATES OF LIQUID

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460503A (en) * 1945-02-26 1949-02-01 Foxboro Co Apparatus for measuring liquid level or specific gravity
FR1457649A (en) * 1965-09-22 1966-01-24 B A R A Bureau D Analyse Et De Force or pressure measuring device
US3240055A (en) * 1963-09-16 1966-03-15 Calumet & Hecla Drawbench load cell
FR1519874A (en) * 1967-02-24 1968-04-05 Loire Atel Forges Device for measuring the forces exerted on a tie rod located inside an enclosure containing a fluid from the outside
US3411361A (en) * 1965-10-23 1968-11-19 Electro Optical Systems Inc Sealed beam sensors
FR1561834A (en) * 1968-05-08 1969-03-28
US3477289A (en) * 1966-08-25 1969-11-11 William S Hansen Combined rate of flow,pressure and temperature gage
US3554025A (en) * 1967-02-08 1971-01-12 Bofors Ab Force measuring device
DE2311734A1 (en) * 1973-03-06 1974-09-12 Siemens Ag DEVICE FOR DETERMINING THE LIQUID LEVEL
DE2531593A1 (en) * 1975-07-15 1977-02-03 Siemens Ag Load cell for loads applied laterally to tube element - is fitted with shock and noise proof strain gauge transducer system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460503A (en) * 1945-02-26 1949-02-01 Foxboro Co Apparatus for measuring liquid level or specific gravity
US3240055A (en) * 1963-09-16 1966-03-15 Calumet & Hecla Drawbench load cell
FR1457649A (en) * 1965-09-22 1966-01-24 B A R A Bureau D Analyse Et De Force or pressure measuring device
US3411361A (en) * 1965-10-23 1968-11-19 Electro Optical Systems Inc Sealed beam sensors
US3477289A (en) * 1966-08-25 1969-11-11 William S Hansen Combined rate of flow,pressure and temperature gage
US3554025A (en) * 1967-02-08 1971-01-12 Bofors Ab Force measuring device
FR1519874A (en) * 1967-02-24 1968-04-05 Loire Atel Forges Device for measuring the forces exerted on a tie rod located inside an enclosure containing a fluid from the outside
FR1561834A (en) * 1968-05-08 1969-03-28
DE2311734A1 (en) * 1973-03-06 1974-09-12 Siemens Ag DEVICE FOR DETERMINING THE LIQUID LEVEL
DE2531593A1 (en) * 1975-07-15 1977-02-03 Siemens Ag Load cell for loads applied laterally to tube element - is fitted with shock and noise proof strain gauge transducer system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414721A1 (en) * 1978-01-12 1979-08-10 Tecniche Elettroniche Applicat APPARATUS FOR MEASURING LOW WEIGHT FLOW RATES OF LIQUID

Also Published As

Publication number Publication date
FR2433174B1 (en) 1983-07-22

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Legal Events

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