GB1419786A - Liquid depth measuring and indicating devices - Google Patents

Liquid depth measuring and indicating devices

Info

Publication number
GB1419786A
GB1419786A GB5644972A GB5644972A GB1419786A GB 1419786 A GB1419786 A GB 1419786A GB 5644972 A GB5644972 A GB 5644972A GB 5644972 A GB5644972 A GB 5644972A GB 1419786 A GB1419786 A GB 1419786A
Authority
GB
United Kingdom
Prior art keywords
liquid depth
potentiometer
capsule
indication
specific gravity
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
GB5644972A
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.)
Rosemount Measurement Ltd
Original Assignee
KDG Instruments 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 KDG Instruments Ltd filed Critical KDG Instruments Ltd
Priority to GB5644972A priority Critical patent/GB1419786A/en
Publication of GB1419786A publication Critical patent/GB1419786A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0082—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means
    • G01L9/0085—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means using variations in inductance
    • 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
    • G01F23/14—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 measurement of pressure
    • G01F23/18—Indicating, recording or alarm devices actuated electrically
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/10—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in inductance, i.e. electric circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

1419786 Measuring liquid level electrically KDG INSTRUMENTS Ltd 7 March 1974 [7 Dec 1972] 56449/72 Heading G1N An apparatus for producing an indication of liquid depth or volume includes a pressure transducer 16 having a capsule 13 and a differential transformer 21, 22, 23 with a movable core 17 coupled to the capsule and providing an electric signal to meter terminals through an output transistor VT5 of which the emitter connects through a potentiometer VR3 to an operational amplifier IC3, the potentiometer being calibrated directly in terms of specific gravity, whereby the circuit gain is varied so that the indication is adjusted for liquids of different specific gravity.
GB5644972A 1972-12-07 1972-12-07 Liquid depth measuring and indicating devices Expired GB1419786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5644972A GB1419786A (en) 1972-12-07 1972-12-07 Liquid depth measuring and indicating devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5644972A GB1419786A (en) 1972-12-07 1972-12-07 Liquid depth measuring and indicating devices

Publications (1)

Publication Number Publication Date
GB1419786A true GB1419786A (en) 1975-12-31

Family

ID=10476654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5644972A Expired GB1419786A (en) 1972-12-07 1972-12-07 Liquid depth measuring and indicating devices

Country Status (1)

Country Link
GB (1) GB1419786A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2428247A1 (en) * 1978-06-06 1980-01-04 Siemens Ag PRESSURE MEASUREMENT CONVERTER
EP0205229A1 (en) * 1985-03-18 1986-12-17 Eaton Corporation Liquid depth measurement system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2428247A1 (en) * 1978-06-06 1980-01-04 Siemens Ag PRESSURE MEASUREMENT CONVERTER
EP0205229A1 (en) * 1985-03-18 1986-12-17 Eaton Corporation Liquid depth measurement system

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Legal Events

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