GB556599A - Improvements in or relating to electrically operated devices for liquid level regulation or indication - Google Patents

Improvements in or relating to electrically operated devices for liquid level regulation or indication

Info

Publication number
GB556599A
GB556599A GB799342D GB799342D GB556599A GB 556599 A GB556599 A GB 556599A GB 799342 D GB799342 D GB 799342D GB 799342 D GB799342 D GB 799342D GB 556599 A GB556599 A GB 556599A
Authority
GB
United Kingdom
Prior art keywords
electrode
relay
contacts
liquid
electrodes
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
GB799342D
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.)
WALTER LEOPOLD STERN
Londex Ltd
Original Assignee
WALTER LEOPOLD STERN
Londex 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 WALTER LEOPOLD STERN, Londex Ltd filed Critical WALTER LEOPOLD STERN
Priority to GB799342D priority Critical patent/GB556599A/en
Publication of GB556599A publication Critical patent/GB556599A/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
    • G01F23/241—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 for discrete levels
    • G01F23/243—Schematic arrangements of probes combined with measuring circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)

Abstract

556,599. Automatic control systems for pumps &c. LONDEX, Ltd., and STERN, W. L. June 8, 1942, No. 7793. [Class 38 (iv)] [Also in Group XVIII] Fluid level.-In a system for indicating or controlling liquid level by electrodes co-operating with the liquid in which a D.C. source, and current only is available, electrolysis and polarization of electrodes is avoided by causing a converter of any kind to be started on contact between liquid and electrode to furnish A.C. to the electrodes. As shown, current from a battery B through an electrode E1 may actuate a relay R to energize a vibrator inverter from the battery through contacts r. The alternating current supplied to electrode E2 energizes relay S which operates a pump motor starter W through contacts S1, de-energizes electrode E1 at contacts S2, and maintains the supply to the inverter at contacts S3. The relay S de-energizes when the liquid leaves electrode E2 and the system restores. In a modification, the relay R may start the pump motor which drives also a rotary generator of A.C. An additional pump or pumps may be controlled by a time delay relay as in Specification 556,484. Specifications 449,453 and 539,827 also are referred to.
GB799342D 1942-06-08 1942-06-08 Improvements in or relating to electrically operated devices for liquid level regulation or indication Expired GB556599A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB799342D GB556599A (en) 1942-06-08 1942-06-08 Improvements in or relating to electrically operated devices for liquid level regulation or indication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB799342D GB556599A (en) 1942-06-08 1942-06-08 Improvements in or relating to electrically operated devices for liquid level regulation or indication

Publications (1)

Publication Number Publication Date
GB556599A true GB556599A (en) 1943-10-12

Family

ID=9843710

Family Applications (1)

Application Number Title Priority Date Filing Date
GB799342D Expired GB556599A (en) 1942-06-08 1942-06-08 Improvements in or relating to electrically operated devices for liquid level regulation or indication

Country Status (1)

Country Link
GB (1) GB556599A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224460A (en) * 1963-01-09 1965-12-21 Esco Cabinet Company Milk transfer system
US3469596A (en) * 1967-10-02 1969-09-30 Sta Rite Industries Liquid transfer apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224460A (en) * 1963-01-09 1965-12-21 Esco Cabinet Company Milk transfer system
US3469596A (en) * 1967-10-02 1969-09-30 Sta Rite Industries Liquid transfer apparatus

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