FR1238730A - Improvements to devices for controlling the circulation of gas in pipelines - Google Patents

Improvements to devices for controlling the circulation of gas in pipelines

Info

Publication number
FR1238730A
FR1238730A FR38550A FR69038550A FR1238730A FR 1238730 A FR1238730 A FR 1238730A FR 38550 A FR38550 A FR 38550A FR 69038550 A FR69038550 A FR 69038550A FR 1238730 A FR1238730 A FR 1238730A
Authority
FR
France
Prior art keywords
pipelines
circulation
controlling
gas
devices
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
FR38550A
Other languages
French (fr)
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.)
Phillips & Pain Vermorel
Original Assignee
Phillips & Pain Vermorel
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 Phillips & Pain Vermorel filed Critical Phillips & Pain Vermorel
Priority to FR38550A priority Critical patent/FR1238730A/en
Application granted granted Critical
Publication of FR1238730A publication Critical patent/FR1238730A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
FR38550A 1958-07-11 1958-07-11 Improvements to devices for controlling the circulation of gas in pipelines Expired FR1238730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR38550A FR1238730A (en) 1958-07-11 1958-07-11 Improvements to devices for controlling the circulation of gas in pipelines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR38550A FR1238730A (en) 1958-07-11 1958-07-11 Improvements to devices for controlling the circulation of gas in pipelines

Publications (1)

Publication Number Publication Date
FR1238730A true FR1238730A (en) 1960-08-19

Family

ID=8592589

Family Applications (1)

Application Number Title Priority Date Filing Date
FR38550A Expired FR1238730A (en) 1958-07-11 1958-07-11 Improvements to devices for controlling the circulation of gas in pipelines

Country Status (1)

Country Link
FR (1) FR1238730A (en)

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