GB1155481A - A Supervisory System including a Measuring Bridge - Google Patents

A Supervisory System including a Measuring Bridge

Info

Publication number
GB1155481A
GB1155481A GB2491666A GB2491666A GB1155481A GB 1155481 A GB1155481 A GB 1155481A GB 2491666 A GB2491666 A GB 2491666A GB 2491666 A GB2491666 A GB 2491666A GB 1155481 A GB1155481 A GB 1155481A
Authority
GB
United Kingdom
Prior art keywords
bridge
trigger circuit
supply
output
alarm
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
GB2491666A
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 GB1155481A publication Critical patent/GB1155481A/en
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)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Emergency Alarm Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
GB2491666A 1965-06-04 1966-06-03 A Supervisory System including a Measuring Bridge Expired GB1155481A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR19720A FR1446363A (fr) 1965-06-04 1965-06-04 Procédé et dispositif de déclenchement et d'alarme à pont de mesure

Publications (1)

Publication Number Publication Date
GB1155481A true GB1155481A (en) 1969-06-18

Family

ID=8581024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2491666A Expired GB1155481A (en) 1965-06-04 1966-06-03 A Supervisory System including a Measuring Bridge

Country Status (3)

Country Link
DE (1) DE1548611B2 (cg-RX-API-DMAC7.html)
FR (1) FR1446363A (cg-RX-API-DMAC7.html)
GB (1) GB1155481A (cg-RX-API-DMAC7.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008977A1 (fr) * 1978-08-25 1980-03-19 Etablissement public dit: CHARBONNAGES DE FRANCE Appareil de mesure d'un constituant d'une atmosphère
FR2517062A1 (fr) * 1981-11-20 1983-05-27 Charbonnages De France Procede d'interrogation d'un detecteur de teneur en gaz combustible, dispositif pour sa mise en oeuvre et application a la detection de la teneur en methane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008977A1 (fr) * 1978-08-25 1980-03-19 Etablissement public dit: CHARBONNAGES DE FRANCE Appareil de mesure d'un constituant d'une atmosphère
FR2434389A1 (fr) * 1978-08-25 1980-03-21 Charbonnages De France Appareil de mesure d'un constituant d'une atmosphere
FR2517062A1 (fr) * 1981-11-20 1983-05-27 Charbonnages De France Procede d'interrogation d'un detecteur de teneur en gaz combustible, dispositif pour sa mise en oeuvre et application a la detection de la teneur en methane
EP0080406A1 (fr) * 1981-11-20 1983-06-01 Etablissement public dit: CHARBONNAGES DE FRANCE Procédé d'interrogation d'un détecteur de teneur en gaz combustible et dispositif pour sa mise en oeuvre
US4475378A (en) * 1981-11-20 1984-10-09 Cdf Chimie S.A. Process for interrogation of a detector of the concentration of combustible gas and an implementing device

Also Published As

Publication number Publication date
DE1548611C3 (cg-RX-API-DMAC7.html) 1973-12-13
DE1548611B2 (de) 1973-05-24
DE1548611A1 (de) 1970-09-24
FR1446363A (fr) 1966-07-22

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