FR1254743A - Indicateur de pression différentielle - Google Patents

Indicateur de pression différentielle

Info

Publication number
FR1254743A
FR1254743A FR824992A FR824992A FR1254743A FR 1254743 A FR1254743 A FR 1254743A FR 824992 A FR824992 A FR 824992A FR 824992 A FR824992 A FR 824992A FR 1254743 A FR1254743 A FR 1254743A
Authority
FR
France
Prior art keywords
differential pressure
pressure indicator
indicator
differential
pressure
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
FR824992A
Other languages
English (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.)
Pall Corp
Original Assignee
Pall Corp
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
Priority claimed from US742657A external-priority patent/US2942572A/en
Application filed by Pall Corp filed Critical Pall Corp
Priority to FR824992A priority Critical patent/FR1254743A/fr
Application granted granted Critical
Publication of FR1254743A publication Critical patent/FR1254743A/fr
Priority claimed from US327935A external-priority patent/US3140690A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication
    • G01L19/12—Alarms or signals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0073—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding actuated by relative movement between two magnets

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fluid Mechanics (AREA)
FR824992A 1958-06-17 1960-04-22 Indicateur de pression différentielle Expired FR1254743A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR824992A FR1254743A (fr) 1958-06-17 1960-04-22 Indicateur de pression différentielle

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US742657A US2942572A (en) 1958-06-17 1958-06-17 Magnetic pressure indicator
US11928A US3077854A (en) 1958-06-17 1960-02-29 Magnetic pressure indicator
FR824992A FR1254743A (fr) 1958-06-17 1960-04-22 Indicateur de pression différentielle
US327935A US3140690A (en) 1963-12-04 1963-12-04 Magnetic pressure indicator

Publications (1)

Publication Number Publication Date
FR1254743A true FR1254743A (fr) 1961-02-24

Family

ID=32475533

Family Applications (1)

Application Number Title Priority Date Filing Date
FR824992A Expired FR1254743A (fr) 1958-06-17 1960-04-22 Indicateur de pression différentielle

Country Status (1)

Country Link
FR (1) FR1254743A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320541A1 (fr) * 1975-08-08 1977-03-04 Pall Corp Indicateur de pressions de fluide a actionnement magnetique et comportant des orifices de prelevement d'echantillons
EP0273358A2 (fr) * 1987-01-02 1988-07-06 Walter Stauffenberg KG Indicateur d'un seuil de pression différentielle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320541A1 (fr) * 1975-08-08 1977-03-04 Pall Corp Indicateur de pressions de fluide a actionnement magnetique et comportant des orifices de prelevement d'echantillons
EP0273358A2 (fr) * 1987-01-02 1988-07-06 Walter Stauffenberg KG Indicateur d'un seuil de pression différentielle
EP0273358A3 (fr) * 1987-01-02 1990-08-01 Walter Stauffenberg KG Indicateur d'un seuil de pression différentielle

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