FR2782805B1 - Procede de mesure de la resistance electrique d'un corps resistif et dispositifs pour la mise en oeuvre d'un tel procede - Google Patents

Procede de mesure de la resistance electrique d'un corps resistif et dispositifs pour la mise en oeuvre d'un tel procede

Info

Publication number
FR2782805B1
FR2782805B1 FR9810774A FR9810774A FR2782805B1 FR 2782805 B1 FR2782805 B1 FR 2782805B1 FR 9810774 A FR9810774 A FR 9810774A FR 9810774 A FR9810774 A FR 9810774A FR 2782805 B1 FR2782805 B1 FR 2782805B1
Authority
FR
France
Prior art keywords
measuring
carrying
devices
electric resistance
resistive body
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 - Fee Related
Application number
FR9810774A
Other languages
English (en)
Other versions
FR2782805A1 (fr
Inventor
Pascal Coudray
Marie Helene Froger
Mickael Lorgeoux
Christophe Truffaut
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to FR9810774A priority Critical patent/FR2782805B1/fr
Priority to US09/383,625 priority patent/US6407557B1/en
Publication of FR2782805A1 publication Critical patent/FR2782805A1/fr
Application granted granted Critical
Publication of FR2782805B1 publication Critical patent/FR2782805B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/22—Measuring resistance of fluids
    • 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
    • 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
    • G01F23/244—Schematic arrangements of probes combined with measuring circuits comprising oscillating circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17566—Ink level or ink residue control
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/04—Measuring peak values or amplitude or envelope of ac or of pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Ink Jet (AREA)
FR9810774A 1998-08-27 1998-08-27 Procede de mesure de la resistance electrique d'un corps resistif et dispositifs pour la mise en oeuvre d'un tel procede Expired - Fee Related FR2782805B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9810774A FR2782805B1 (fr) 1998-08-27 1998-08-27 Procede de mesure de la resistance electrique d'un corps resistif et dispositifs pour la mise en oeuvre d'un tel procede
US09/383,625 US6407557B1 (en) 1998-08-27 1999-08-26 Process for measuring the electrical resistance of a resistive body for example for checking the conformity of a liquid product and devices for carrying out such a process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9810774A FR2782805B1 (fr) 1998-08-27 1998-08-27 Procede de mesure de la resistance electrique d'un corps resistif et dispositifs pour la mise en oeuvre d'un tel procede

Publications (2)

Publication Number Publication Date
FR2782805A1 FR2782805A1 (fr) 2000-03-03
FR2782805B1 true FR2782805B1 (fr) 2000-11-10

Family

ID=9529924

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9810774A Expired - Fee Related FR2782805B1 (fr) 1998-08-27 1998-08-27 Procede de mesure de la resistance electrique d'un corps resistif et dispositifs pour la mise en oeuvre d'un tel procede

Country Status (1)

Country Link
FR (1) FR2782805B1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944512A1 (de) * 1979-11-03 1981-05-14 Pelikan Ag, 3000 Hannover Tintenbehaelter mit kapazitiver fuellstandsanzeige
US4922182A (en) * 1988-08-03 1990-05-01 Monroe Electronics, Inc. Auto reactance compensated non-contacting resistivity measuring device
EP0673561A1 (fr) * 1992-06-19 1995-09-27 Deutsche Thomson-Brandt GmbH Circuit oscillateur et son utilisation
FR2759164A1 (fr) * 1997-01-31 1998-08-07 Canon Kk Procede et dispositif de determination de la quantite de produit present dans un reservoir, reservoir de produit et dispositif de traitement de signaux electriques destines a un tel dispositif de determination

Also Published As

Publication number Publication date
FR2782805A1 (fr) 2000-03-03

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20140430