GB581825A - Improvements in and relating to liquid level control systems - Google Patents

Improvements in and relating to liquid level control systems

Info

Publication number
GB581825A
GB581825A GB5971/44A GB597144A GB581825A GB 581825 A GB581825 A GB 581825A GB 5971/44 A GB5971/44 A GB 5971/44A GB 597144 A GB597144 A GB 597144A GB 581825 A GB581825 A GB 581825A
Authority
GB
United Kingdom
Prior art keywords
liquid level
level control
relating
control systems
oxide
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
GB5971/44A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB581825A publication Critical patent/GB581825A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

581,825. Non-metal resistances. BRITISH THOMSONHOUSTON CO., Ltd. March 31, 1944, No. 5971. Convention date, April 2, 1943. [Class 37] [Also in Group XXXV] A resistance detector unit for a liquid level control system [see Group XXXV] consists of a negative temperature coefficient resistance 22 of sintered oxide, such as manganese oxide and nickel oxide with a binder fixed between two non-corrosive metal plates 23 and 24.
GB5971/44A 1943-04-02 1944-03-31 Improvements in and relating to liquid level control systems Expired GB581825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US581825XA 1943-04-02 1943-04-02

Publications (1)

Publication Number Publication Date
GB581825A true GB581825A (en) 1946-10-25

Family

ID=22015200

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5971/44A Expired GB581825A (en) 1943-04-02 1944-03-31 Improvements in and relating to liquid level control systems

Country Status (1)

Country Link
GB (1) GB581825A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2861159A (en) * 1953-08-31 1958-11-18 Du Pont Resistance probe for level control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2861159A (en) * 1953-08-31 1958-11-18 Du Pont Resistance probe for level control

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