GB1215976A - A closed loop pneumatic system for indicating pressure - Google Patents

A closed loop pneumatic system for indicating pressure

Info

Publication number
GB1215976A
GB1215976A GB07901/68A GB1790168A GB1215976A GB 1215976 A GB1215976 A GB 1215976A GB 07901/68 A GB07901/68 A GB 07901/68A GB 1790168 A GB1790168 A GB 1790168A GB 1215976 A GB1215976 A GB 1215976A
Authority
GB
United Kingdom
Prior art keywords
pressure
diaphragm
chamber
valve means
passageway
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
GB07901/68A
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.)
Emerson Process Management Ltd
Original Assignee
Rosemount Engineering Co Ltd
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 Rosemount Engineering Co Ltd filed Critical Rosemount Engineering Co Ltd
Publication of GB1215976A publication Critical patent/GB1215976A/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
    • 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
    • G01L19/0007—Fluidic connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92019—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92466—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1,215,976. Fluid-pressure servomotor systems. ROSEMOUNT ENG. CO. April 16, 1968 [April 28, 1967], No.17901/68. Heading G3P. A servomotor system for providing a remote indication of pressure includes a housing 16, a first diaphragm 32 exposed to the pressure to be indicated, a second movable diaphragm 52 forming a chamber 62, a source 45 of fluid under pressure, a passageway 35, 40, 41 leading from the source to the chamber; valve means; 72 located in the passageway between the first and second diaphragms, a first link 24 to cause the valve means to open when the pressure on the first diaphragm increases, and a second link 36 to cause the valve means to close when the pressure in the chamber 62 increases. The diaphragm 32 and three radial strips 37 supportingthe valve means for axial movement are secured by spot welding, the diaphragm 32 being of stainless steel and exposed to the pressure in the barrel 12 of a plastic extruder. The diaphragm 52 is clamped between two parts of a housing 46 containing the chamber 62 communicating with a gauge 63 and with atmosphere through an orifice 66 and a chamber communicating with atmosphere through a screen 68 and sealed from the passageway 35 by an O-ring 61. A spring 65 balances the system at zero pressure. A pressure switch or limit arm contacts within the gauge 63 may close an alarm circuit when a predetermined pressure is reached.
GB07901/68A 1967-04-28 1968-04-16 A closed loop pneumatic system for indicating pressure Expired GB1215976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63457867A 1967-04-28 1967-04-28

Publications (1)

Publication Number Publication Date
GB1215976A true GB1215976A (en) 1970-12-16

Family

ID=24544372

Family Applications (1)

Application Number Title Priority Date Filing Date
GB07901/68A Expired GB1215976A (en) 1967-04-28 1968-04-16 A closed loop pneumatic system for indicating pressure

Country Status (3)

Country Link
DE (1) DE1773296B2 (en)
FR (1) FR1561748A (en)
GB (1) GB1215976A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105115655A (en) * 2015-08-28 2015-12-02 重庆市腾瀚工贸有限公司 Compression gauge cut-off type short circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH645721A5 (en) * 1980-09-24 1984-10-15 Metabo Sa Construction D App S DEVICE FOR MEASURING PRESSURE IN POOR ACCESIBLE LOCATIONS, ESPECIALLY FOR MEDICAL ART.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105115655A (en) * 2015-08-28 2015-12-02 重庆市腾瀚工贸有限公司 Compression gauge cut-off type short circuit

Also Published As

Publication number Publication date
DE1773296A1 (en) 1971-01-14
DE1773296B2 (en) 1971-09-23
FR1561748A (en) 1969-03-28

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