GB1527193A - Liquid level sensor - Google Patents

Liquid level sensor

Info

Publication number
GB1527193A
GB1527193A GB133977A GB133977A GB1527193A GB 1527193 A GB1527193 A GB 1527193A GB 133977 A GB133977 A GB 133977A GB 133977 A GB133977 A GB 133977A GB 1527193 A GB1527193 A GB 1527193A
Authority
GB
United Kingdom
Prior art keywords
switch
float
liquid level
moving
tube
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
GB133977A
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.)
BW CONTROLS Inc
Original Assignee
BW CONTROLS Inc
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 BW CONTROLS Inc filed Critical BW CONTROLS Inc
Priority to GB133977A priority Critical patent/GB1527193A/en
Publication of GB1527193A publication Critical patent/GB1527193A/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
    • G01F23/30—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 floats
    • G01F23/64—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 floats of the free float type without mechanical transmission elements
    • G01F23/72—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 floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
    • G01F23/74—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 floats of the free float type without mechanical transmission elements using magnetically actuated indicating means for sensing changes in level only at discrete points

Abstract

1527193 Liquid level indication BW CONTROLS Inc 13 Jan 1977 01339/77 Headings G1H and G1N A liquid level sensor comprises a float 34 moving up and down on a guide tube 32, a magnetic proximity switch 68 e.g. a reed switch in the tube, magnetic means 80 for closing the switch and maintaining it closed when the float passes the switch moving in one direction and means for opening the switch when the float passes the switch moving in the opposite direction. This arrangement avoids problems due to power failure and of redundancy which occur with latching relays necessary if the switch does not remain closed. Reed switches are latched by small bias magnets (88), Fig. 2 (not shown) or the reeds have a high residual magnetism and the float provides leading and trailing fields of opposite direction. A number of switches which may be normally on or off are arranged in the tube. Various arrangements of magnets are described.
GB133977A 1977-01-13 1977-01-13 Liquid level sensor Expired GB1527193A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB133977A GB1527193A (en) 1977-01-13 1977-01-13 Liquid level sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB133977A GB1527193A (en) 1977-01-13 1977-01-13 Liquid level sensor

Publications (1)

Publication Number Publication Date
GB1527193A true GB1527193A (en) 1978-10-04

Family

ID=9720281

Family Applications (1)

Application Number Title Priority Date Filing Date
GB133977A Expired GB1527193A (en) 1977-01-13 1977-01-13 Liquid level sensor

Country Status (1)

Country Link
GB (1) GB1527193A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168961A (en) * 1984-12-22 1986-07-02 Gen Motors France Closure cap
GB2196736A (en) * 1986-10-30 1988-05-05 Cobe Lab Liquid level sensor
CN111964754A (en) * 2020-08-25 2020-11-20 芜湖联诺电器有限公司 Liquid level sensor for special-shaped oil tank

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168961A (en) * 1984-12-22 1986-07-02 Gen Motors France Closure cap
GB2196736A (en) * 1986-10-30 1988-05-05 Cobe Lab Liquid level sensor
GB2196736B (en) * 1986-10-30 1991-03-06 Cobe Lab Fluid flow apparatus for use in connection with dialysis apparatus
CN111964754A (en) * 2020-08-25 2020-11-20 芜湖联诺电器有限公司 Liquid level sensor for special-shaped oil tank

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee