GB958986A - Method of locating the free surface of a liquid contained in a tank, and device for the practical application of the method - Google Patents

Method of locating the free surface of a liquid contained in a tank, and device for the practical application of the method

Info

Publication number
GB958986A
GB958986A GB1386862A GB1386862A GB958986A GB 958986 A GB958986 A GB 958986A GB 1386862 A GB1386862 A GB 1386862A GB 1386862 A GB1386862 A GB 1386862A GB 958986 A GB958986 A GB 958986A
Authority
GB
United Kingdom
Prior art keywords
tank
switches
locating
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
GB1386862A
Inventor
Jacques Boissier
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB958986A publication Critical patent/GB958986A/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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

958,986. Determining liquid level. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 10, 1962 [April 28,1961], No. 13868/62. Heading G1N. A method of locating the surface of a liquid in a tank consists in placing at least two conductive probes 1-14 at different heights inside the tank, and in comparing the electrical resistance existing between the tank wall and each of two of the probes. Commonly driven stepping switches 15, 16 provide for comparing for two adjacent electrodes the resistances between each electrode and the tank, the electrodes being connected each to a strapped pair of contacts on the stepping switches, and the straps on the two switches being displaced with respect to each other to provide for progressive testing up or down the tank. The switches are driven by a motor M which is controlled by the contacts of relays R1, R2, the former of which controls the direction of rotation, and the latter of which opens the motor circuit when the surface of the liquid is between the two electrodes connected for testing by the stepping switches. The liquid level is indicated by the switch position. In the home position the probe resistance is compared with that of a resistor 22 to initiate the hunt for the surface. Relay and motor fail alarms are included; and manual operation of the switches to determine the level is described.
GB1386862A 1961-04-28 1962-04-10 Method of locating the free surface of a liquid contained in a tank, and device for the practical application of the method Expired GB958986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR860194A FR1295547A (en) 1961-04-28 1961-04-28 Method for locating the free surface of a liquid contained in a reservoir, and device for carrying out the method

Publications (1)

Publication Number Publication Date
GB958986A true GB958986A (en) 1964-05-27

Family

ID=8754053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1386862A Expired GB958986A (en) 1961-04-28 1962-04-10 Method of locating the free surface of a liquid contained in a tank, and device for the practical application of the method

Country Status (4)

Country Link
BE (1) BE616298A (en)
FR (1) FR1295547A (en)
GB (1) GB958986A (en)
LU (1) LU41530A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993000573A1 (en) * 1991-06-25 1993-01-07 Endress & Hauser Gmbh & Co. Interface level detector

Also Published As

Publication number Publication date
BE616298A (en) 1962-07-31
FR1295547A (en) 1962-06-08
LU41530A1 (en) 1962-06-12

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