GB1016762A - Improvements relating to protective means for electrical apparatus - Google Patents

Improvements relating to protective means for electrical apparatus

Info

Publication number
GB1016762A
GB1016762A GB1736761A GB1736761A GB1016762A GB 1016762 A GB1016762 A GB 1016762A GB 1736761 A GB1736761 A GB 1736761A GB 1736761 A GB1736761 A GB 1736761A GB 1016762 A GB1016762 A GB 1016762A
Authority
GB
United Kingdom
Prior art keywords
air flow
air
flow
vane
measuring
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
GB1736761A
Inventor
Thomas Henry Palmer
Derek Barry Russell
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB1736761A priority Critical patent/GB1016762A/en
Publication of GB1016762A publication Critical patent/GB1016762A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
    • G01P13/0026—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using deflection of baffle-plates
    • G01P13/0033—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using deflection of baffle-plates with electrical coupling to the indicating device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
    • G01P5/04—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using deflection of baffle-plates

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measuring Volume Flow (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1, 016, 762. Measuring air flow electrically; flow indicators. ENGLISH ELECTRIC CO. Ltd. May 11, 1962 [May 12, 1961], No.17367/61. Heading G1N and G1R. Apparatus for measuring the rate of flow of air comprises an air duct 18 (Fig. 1) in which is located a vane 25, hinged externally at 23, whose deflected position along a scale 20 is indicative of the air flow rate. The vane 25 is mechanically coupled to a synchro rotor winding 27 (Fig. 2 not shown), the rectified signals from the secondary windings 29 being used to energize an alarm relay 40 when the air flow falls below a predetermined value. The apparatus may indicate the ventilation in a mine. When the alarm level is automatically varied in accordance with ambient atmospheric pressure, e.g. by variation of potentiometer 32.
GB1736761A 1961-05-12 1961-05-12 Improvements relating to protective means for electrical apparatus Expired GB1016762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1736761A GB1016762A (en) 1961-05-12 1961-05-12 Improvements relating to protective means for electrical apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1736761A GB1016762A (en) 1961-05-12 1961-05-12 Improvements relating to protective means for electrical apparatus

Publications (1)

Publication Number Publication Date
GB1016762A true GB1016762A (en) 1966-01-12

Family

ID=10093962

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1736761A Expired GB1016762A (en) 1961-05-12 1961-05-12 Improvements relating to protective means for electrical apparatus

Country Status (1)

Country Link
GB (1) GB1016762A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2100505A5 (en) * 1970-07-11 1972-03-17 Bosch Gmbh Robert
GB2358064A (en) * 2000-01-06 2001-07-11 Abb Instrumentation Ltd Flow meter structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2100505A5 (en) * 1970-07-11 1972-03-17 Bosch Gmbh Robert
GB2358064A (en) * 2000-01-06 2001-07-11 Abb Instrumentation Ltd Flow meter structure

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