GB1284812A - Improvements in or relating to force responsive apparatus with variable sensitivity - Google Patents

Improvements in or relating to force responsive apparatus with variable sensitivity

Info

Publication number
GB1284812A
GB1284812A GB29872/70A GB2987270A GB1284812A GB 1284812 A GB1284812 A GB 1284812A GB 29872/70 A GB29872/70 A GB 29872/70A GB 2987270 A GB2987270 A GB 2987270A GB 1284812 A GB1284812 A GB 1284812A
Authority
GB
United Kingdom
Prior art keywords
coil
switches
sensitivity
tappings
june
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
GB29872/70A
Other languages
English (en)
Inventor
Pierre Bertrand
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Publication of GB1284812A publication Critical patent/GB1284812A/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
    • 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
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G01L11/004—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by the use of counterbalancing forces
    • G01L11/008—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by the use of counterbalancing forces electrostatic or electromagnetic counterbalancing forces

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Fluid Pressure (AREA)
GB29872/70A 1969-06-19 1970-06-19 Improvements in or relating to force responsive apparatus with variable sensitivity Expired GB1284812A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6920508A FR2050632A5 (enExample) 1969-06-19 1969-06-19

Publications (1)

Publication Number Publication Date
GB1284812A true GB1284812A (en) 1972-08-09

Family

ID=9036021

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29872/70A Expired GB1284812A (en) 1969-06-19 1970-06-19 Improvements in or relating to force responsive apparatus with variable sensitivity

Country Status (5)

Country Link
US (1) US3660745A (enExample)
DE (1) DE2029837A1 (enExample)
FR (1) FR2050632A5 (enExample)
GB (1) GB1284812A (enExample)
NL (1) NL7009067A (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736880A (en) * 1971-04-19 1973-06-05 Rohr Industries Inc Feedback control circuit for magnetic suspension and propulsion system
FR2174718B1 (enExample) * 1972-03-02 1976-06-11 Singer Co
US3832618A (en) * 1973-01-29 1974-08-27 Fischer & Porter Co Electronic differential pressure transmitter
US3936717A (en) * 1974-08-21 1976-02-03 Robertshaw Controls Company Force balance transmitter and parts therefor or the like
DE3101449A1 (de) * 1981-01-19 1982-08-05 Danfoss A/S, 6430 Nordborg "druckmessvorrichtung"
US4532809A (en) * 1981-10-05 1985-08-06 Allied Corporation Pressure measuring systems with increased accuracy for a constant resolution
EP0947815A1 (de) * 1998-04-01 1999-10-06 HAENNI & CIE. AG Differentieller Druckmessumformer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376482A (en) * 1964-11-17 1968-04-02 Taylor Instrument Co Rebalancing system using multiple force range motor and power source
US3350945A (en) * 1966-06-13 1967-11-07 Gen Electric Digital span adjuster for differential pressure measuring device

Also Published As

Publication number Publication date
NL7009067A (enExample) 1970-12-22
DE2029837A1 (de) 1970-12-23
US3660745A (en) 1972-05-02
FR2050632A5 (enExample) 1971-04-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee