GB639339A - Improvements relating to electrically operated devices for indicating and measuring the level of liquids - Google Patents

Improvements relating to electrically operated devices for indicating and measuring the level of liquids

Info

Publication number
GB639339A
GB639339A GB2954647A GB2954647A GB639339A GB 639339 A GB639339 A GB 639339A GB 2954647 A GB2954647 A GB 2954647A GB 2954647 A GB2954647 A GB 2954647A GB 639339 A GB639339 A GB 639339A
Authority
GB
United Kingdom
Prior art keywords
follow
level
liquid
indicator
disc
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
GB2954647A
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.)
Evershed and Vignoles Ltd
Original Assignee
Evershed and Vignoles 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 Evershed and Vignoles Ltd filed Critical Evershed and Vignoles Ltd
Priority to GB2954647A priority Critical patent/GB639339A/en
Publication of GB639339A publication Critical patent/GB639339A/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
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
    • G01F23/245—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid with a probe moved by an auxiliary power, e.g. meter, to follow automatically the level

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

639,339. Liquid-level indicators. EVERSHED & VIGNOLES, Ltd., and NEEDHAM, J. C. Nov. 5, 1947, No. 29546. [Class 40 (i)] In a liquid-level indicator actuated through a follow-up mechanism, a displacer 1 is held partly submerged in the liquid so that a net resultant force is transmitted thereby, e.g. through a cord 2 and drum 4, to a radial contact arm 7, the force being normally balanced by a tension spring 17 connected between the arm 7 and the follow-up disc 16 coaxial with the spindle 6. Variation in the liquid level causes the contact 9 on the contact arm to make with one or other of the contacts 10, 11 on the disc 16 to energize the split phase follow-up motor 30 which through step-down gearing 34-37 drives the follow-up mechanism in the appropriate sense. An indicator 42 may be driven by the follow-up disc 16 and a remote indicator 44 may be actuated from the motor-driven spindle 36 by a step-by-step transmission system 43. According to the Provisional Specification, coarse and fine pointers may be provided on the indicator 42.
GB2954647A 1947-11-05 1947-11-05 Improvements relating to electrically operated devices for indicating and measuring the level of liquids Expired GB639339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2954647A GB639339A (en) 1947-11-05 1947-11-05 Improvements relating to electrically operated devices for indicating and measuring the level of liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2954647A GB639339A (en) 1947-11-05 1947-11-05 Improvements relating to electrically operated devices for indicating and measuring the level of liquids

Publications (1)

Publication Number Publication Date
GB639339A true GB639339A (en) 1950-06-28

Family

ID=10293237

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2954647A Expired GB639339A (en) 1947-11-05 1947-11-05 Improvements relating to electrically operated devices for indicating and measuring the level of liquids

Country Status (1)

Country Link
GB (1) GB639339A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1548939B1 (en) * 1965-01-22 1970-11-26 Evershed Vignoles Ltd Device for measuring the fill level of liquids
US4422328A (en) * 1981-10-13 1983-12-27 Sierra Misco Liquid level sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1548939B1 (en) * 1965-01-22 1970-11-26 Evershed Vignoles Ltd Device for measuring the fill level of liquids
US4422328A (en) * 1981-10-13 1983-12-27 Sierra Misco Liquid level sensor

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