FR2325909A1 - Automatic oil level sensor for vehicles - uses fast response level detector, electronic threshold switch and alarm system - Google Patents

Automatic oil level sensor for vehicles - uses fast response level detector, electronic threshold switch and alarm system

Info

Publication number
FR2325909A1
FR2325909A1 FR7529110A FR7529110A FR2325909A1 FR 2325909 A1 FR2325909 A1 FR 2325909A1 FR 7529110 A FR7529110 A FR 7529110A FR 7529110 A FR7529110 A FR 7529110A FR 2325909 A1 FR2325909 A1 FR 2325909A1
Authority
FR
France
Prior art keywords
level sensor
vehicles
threshold switch
alarm system
fast response
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.)
Pending
Application number
FR7529110A
Other languages
French (fr)
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.)
Jaeger SA
Original Assignee
Jaeger SA
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 Jaeger SA filed Critical Jaeger SA
Priority to FR7529110A priority Critical patent/FR2325909A1/en
Publication of FR2325909A1 publication Critical patent/FR2325909A1/en
Pending 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
    • G01F23/246—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 thermal devices
    • G01F23/247—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 thermal devices for discrete levels
    • 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
    • G01F23/26—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G01F23/265—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors for discrete levels

Abstract

The device described enables the level of liquid contained in a tank on a vehicle to be automatically determined. It is particularly useful for oil. It comprises a rapid response level sensor (4) connected to an electronic threshold switch (6) which in turn is connected to an audio and/or visual alarm (7) or to a control system. The sensor is earthed via the pressure switch (1) controlling the oil pressure warning device. The level sensor may be capacitive or of the thermistor type. Alternatively it may be of the hot wire type and be used with a Wheatstone bridge.
FR7529110A 1975-09-23 1975-09-23 Automatic oil level sensor for vehicles - uses fast response level detector, electronic threshold switch and alarm system Pending FR2325909A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7529110A FR2325909A1 (en) 1975-09-23 1975-09-23 Automatic oil level sensor for vehicles - uses fast response level detector, electronic threshold switch and alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7529110A FR2325909A1 (en) 1975-09-23 1975-09-23 Automatic oil level sensor for vehicles - uses fast response level detector, electronic threshold switch and alarm system

Publications (1)

Publication Number Publication Date
FR2325909A1 true FR2325909A1 (en) 1977-04-22

Family

ID=9160332

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7529110A Pending FR2325909A1 (en) 1975-09-23 1975-09-23 Automatic oil level sensor for vehicles - uses fast response level detector, electronic threshold switch and alarm system

Country Status (1)

Country Link
FR (1) FR2325909A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008508A1 (en) * 1978-08-23 1980-03-05 LUCAS INDUSTRIES public limited company Liquid level sensing apparatus
US4679432A (en) * 1984-11-27 1987-07-14 Veglia Probe for measuring the level of a liquid
FR2697985A1 (en) * 1992-11-13 1994-05-20 Thirode Grandes Cuisines Poligny Automatic control of fat level in fryer - using electric resistance type temperature sensor inserted in fryer to interrupt power on overheating

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008508A1 (en) * 1978-08-23 1980-03-05 LUCAS INDUSTRIES public limited company Liquid level sensing apparatus
US4679432A (en) * 1984-11-27 1987-07-14 Veglia Probe for measuring the level of a liquid
FR2697985A1 (en) * 1992-11-13 1994-05-20 Thirode Grandes Cuisines Poligny Automatic control of fat level in fryer - using electric resistance type temperature sensor inserted in fryer to interrupt power on overheating

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