ES483465A1 - Aparato de medicion y-o supervision del porcentaje de un elemento constitutivo de una atmosfera - Google Patents

Aparato de medicion y-o supervision del porcentaje de un elemento constitutivo de una atmosfera

Info

Publication number
ES483465A1
ES483465A1 ES483465A ES483465A ES483465A1 ES 483465 A1 ES483465 A1 ES 483465A1 ES 483465 A ES483465 A ES 483465A ES 483465 A ES483465 A ES 483465A ES 483465 A1 ES483465 A1 ES 483465A1
Authority
ES
Spain
Prior art keywords
measuring
circuit
constituent
filaments
value
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
ES483465A
Other languages
English (en)
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.)
Charbonnages de France CDF
Original Assignee
Charbonnages de France CDF
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 Charbonnages de France CDF filed Critical Charbonnages de France CDF
Publication of ES483465A1 publication Critical patent/ES483465A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
    • G01N27/16—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

Aparato de medición y/o supervisión del porcentaje de un elemento constitutivo de una atmósfera, por medio de un elemento sensible a dicho porcentaje, estando dicho elemento sensible dispuesto en una célula de medición cuyo espacio interior se pone, para la medición de dicho porcentaje, en comunicación con la atmósfera a través de una pared porosa, pudiendo dicho elemento sensible ser conectado en un circuito de alimentación eléctrica y en un circuito de medición eléctrica que suministra una señal cuyo valor es función de una propiedad eléctrica de dicho elemento sensible que varía en función del porcentaje de dicho elemento constitutivo, incluyendo dicho aparato; - un dispositivo de memorización (14) del valor de la señal, y - un dispositivo de presentación (16) del valor memorizado, caracterizado porque incluye además una base de tiempo disparable (17) que incluye unos medios que permiten realizar la iniciación secuencial de las siguientes operaciones: - conexión retardada del elemento sensible (3,4) en el circuito de medición eléctrica (10), y - memorización (14) del último valor de la señal.
ES483465A 1978-08-25 1979-08-17 Aparato de medicion y-o supervision del porcentaje de un elemento constitutivo de una atmosfera Expired ES483465A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7824663A FR2434389A1 (fr) 1978-08-25 1978-08-25 Appareil de mesure d'un constituant d'une atmosphere

Publications (1)

Publication Number Publication Date
ES483465A1 true ES483465A1 (es) 1980-04-16

Family

ID=9212081

Family Applications (1)

Application Number Title Priority Date Filing Date
ES483465A Expired ES483465A1 (es) 1978-08-25 1979-08-17 Aparato de medicion y-o supervision del porcentaje de un elemento constitutivo de una atmosfera

Country Status (6)

Country Link
US (1) US4255960A (es)
EP (1) EP0008977A1 (es)
AU (1) AU523993B2 (es)
CA (1) CA1143437A (es)
ES (1) ES483465A1 (es)
FR (1) FR2434389A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507779A1 (fr) * 1981-06-15 1982-12-17 Charbonnages De France Procede et appareil d'explosimetrie a moyen nouveau de lever de doute des mesures
US4599609A (en) * 1984-12-05 1986-07-08 Allied Corporation Personal liquid chemical agent detector
US6055285A (en) * 1997-11-17 2000-04-25 Qlogic Corporation Synchronization circuit for transferring pointer between two asynchronous circuits
DE102005003049B3 (de) * 2005-01-22 2006-06-29 Dräger Safety AG & Co. KGaA Explosionsgeschützter Gassensor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL260653A (es) * 1960-02-05
US3347635A (en) * 1963-05-20 1967-10-17 United Nuclear Corp Gas analysis method
DE1598521B2 (de) * 1965-01-19 1971-10-21 Hübner, Rolf H., Dipl.-Ing., 4600 Dortmund Tragbares messgeraet zur bestimmung des gasgehaltes im wetterstrom unter tage
FR1446363A (fr) * 1965-06-04 1966-07-22 Charbonnages De France Procédé et dispositif de déclenchement et d'alarme à pont de mesure
US4002429A (en) * 1974-05-13 1977-01-11 Vysoka Skola Chemicko-Technologicka Method and apparatus for measuring the concentration of combustible components of a gas mixture
JPS5289999A (en) * 1975-12-31 1977-07-28 Gen Monitors Pulse duration modulating apparatus for heating a sensing element
DE2627916C3 (de) * 1976-06-22 1978-12-21 Auergesellschaft Gmbh, 1000 Berlin Schaltungsanordnung für eine Meßbrücke eines Gasspürgerätes
US4063447A (en) * 1977-03-14 1977-12-20 Honeywell, Inc. Bridge circuit with drift compensation

Also Published As

Publication number Publication date
AU5004779A (en) 1980-03-20
US4255960A (en) 1981-03-17
FR2434389A1 (fr) 1980-03-21
EP0008977A1 (fr) 1980-03-19
FR2434389B1 (es) 1981-11-27
CA1143437A (fr) 1983-03-22
AU523993B2 (en) 1982-08-26

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