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GB856125A - Proportional photo-electric flow measurement system - Google Patents

Proportional photo-electric flow measurement system

Info

Publication number
GB856125A
GB856125A GB23360/59A GB2336059A GB856125A GB 856125 A GB856125 A GB 856125A GB 23360/59 A GB23360/59 A GB 23360/59A GB 2336059 A GB2336059 A GB 2336059A GB 856125 A GB856125 A GB 856125A
Authority
GB
United Kingdom
Prior art keywords
tube
photo
flow
signal
opaque
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
GB23360/59A
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.)
Schneider Electric Systems USA Inc
Original Assignee
Foxboro Co
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 Foxboro Co filed Critical Foxboro Co
Publication of GB856125A publication Critical patent/GB856125A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01F1/05—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 mechanical effects
    • G01F1/20—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 mechanical effects by detection of dynamic effects of the flow
    • G01F1/22—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 mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters
    • G01F1/24—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 mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters with magnetic or electric coupling to the indicating device

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

856,125. Photo-electric devices. FOXBORO CO. July 7, 1959 [July 10, 1958], No. 23360/59. Class 40(3). A flow measuring device comprises a vertically disposed tapered opaque tube 24 through which fluid flows between an inlet pipe 14 and an outlet pipe 16 such flow causing an opaque spherical member 25 contained in tube 24 to move up and down the tube in accordance with the flow rate and so vary the amount of light from a source 26 which reaches a photo-electric device 33. The signal output of the latter, which is indicative of the flow rate, is supplied to a recording and control device 12 (which may be located at a position remote from the flow measuring device) from which a signal is derived to control a pneumatically operated valve 13 in the main flow pipe 10. To compensate for light transmission changes due to other causes (e.g. colour changes in the fluid) a further opaque tube of uniform bore is coupled into the flow circuit between the tapered tube and the outlet pipe, one end of the further tube being open to the light source and the other end provided with a photo-electric device the signal produced by which is referenced against the signal from the photo-electric device associated with the tapered tube. The fluid may be a liquid or a gas.
GB23360/59A 1958-07-10 1959-07-07 Proportional photo-electric flow measurement system Expired GB856125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US856125XA 1958-07-10 1958-07-10

Publications (1)

Publication Number Publication Date
GB856125A true GB856125A (en) 1960-12-14

Family

ID=22192768

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23360/59A Expired GB856125A (en) 1958-07-10 1959-07-07 Proportional photo-electric flow measurement system

Country Status (1)

Country Link
GB (1) GB856125A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564968A1 (en) * 1984-05-22 1985-11-29 Boc Group Plc ROTAMETER
EP1970674A1 (en) * 2007-03-15 2008-09-17 Daniel J. Smith Variable area flow rate meter using optical sensing of float position in the duct

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564968A1 (en) * 1984-05-22 1985-11-29 Boc Group Plc ROTAMETER
EP1970674A1 (en) * 2007-03-15 2008-09-17 Daniel J. Smith Variable area flow rate meter using optical sensing of float position in the duct

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