ZA738944B - Improvements to apparatuses for measuring or monitoring a parameter - Google Patents

Improvements to apparatuses for measuring or monitoring a parameter

Info

Publication number
ZA738944B
ZA738944B ZA738944A ZA738944A ZA738944B ZA 738944 B ZA738944 B ZA 738944B ZA 738944 A ZA738944 A ZA 738944A ZA 738944 A ZA738944 A ZA 738944A ZA 738944 B ZA738944 B ZA 738944B
Authority
ZA
South Africa
Prior art keywords
apparatuses
parameter
monitoring
measuring
Prior art date
Application number
ZA738944A
Other languages
English (en)
Inventor
M Boutonnat
Original Assignee
Charbonnages De Fr & M S A De
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 Fr & M S A De filed Critical Charbonnages De Fr & M S A De
Publication of ZA738944B publication Critical patent/ZA738944B/xx

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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electrochemistry (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
ZA738944A 1972-11-29 1973-11-23 Improvements to apparatuses for measuring or monitoring a parameter ZA738944B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7242382A FR2208520A5 (cg-RX-API-DMAC7.html) 1972-11-29 1972-11-29

Publications (1)

Publication Number Publication Date
ZA738944B true ZA738944B (en) 1974-11-27

Family

ID=9107908

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA738944A ZA738944B (en) 1972-11-29 1973-11-23 Improvements to apparatuses for measuring or monitoring a parameter

Country Status (13)

Country Link
US (1) US3887335A (cg-RX-API-DMAC7.html)
JP (1) JPS501759A (cg-RX-API-DMAC7.html)
CH (1) CH579769A5 (cg-RX-API-DMAC7.html)
DD (1) DD109277A5 (cg-RX-API-DMAC7.html)
DE (1) DE2359595A1 (cg-RX-API-DMAC7.html)
ES (1) ES420912A1 (cg-RX-API-DMAC7.html)
FR (1) FR2208520A5 (cg-RX-API-DMAC7.html)
GB (1) GB1446087A (cg-RX-API-DMAC7.html)
IT (1) IT1002072B (cg-RX-API-DMAC7.html)
NL (1) NL7316202A (cg-RX-API-DMAC7.html)
PL (1) PL91248B1 (cg-RX-API-DMAC7.html)
RO (1) RO81734A (cg-RX-API-DMAC7.html)
ZA (1) ZA738944B (cg-RX-API-DMAC7.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2408218C3 (de) * 1974-02-21 1983-11-03 Ehlen, Karl Josef, Dr., 5000 Köln Schaltungsanordnung zum Nachweis von Gasen
ZA766200B (en) * 1975-10-28 1978-05-30 Consolidation Coal Co Electrical circuitry for detecting a combustible mixture of gas in a mine atmosphere
CN102448777B (zh) * 2009-05-26 2015-06-24 丰田自动车株式会社 控制装置、车载设备以及系统及其方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239828A (en) * 1962-07-27 1966-03-08 Erdco Eng Corp Combustible gas detector
US3517556A (en) * 1967-05-02 1970-06-30 Monsanto Co Resistive-type temperature-to-current transducer
US3503261A (en) * 1967-11-01 1970-03-31 Fischer & Porter Co Resistance to current converter
DE1951523B2 (de) * 1969-10-13 1971-12-30 Schoppe & Faeser Gmbh, 4950 Minden Elektrischer messumformer nach dem zwei draht verfahren
US3764880A (en) * 1972-05-08 1973-10-09 Rosemount Inc Two-wire current transmitter with isolated transducer circuit

Also Published As

Publication number Publication date
DE2359595A1 (de) 1974-06-12
IT1002072B (it) 1976-05-20
RO81734A (ro) 1983-06-01
DD109277A5 (cg-RX-API-DMAC7.html) 1974-10-20
RO81734B (ro) 1983-05-30
ES420912A1 (es) 1976-04-01
GB1446087A (en) 1976-08-11
US3887335A (en) 1975-06-03
PL91248B1 (cg-RX-API-DMAC7.html) 1977-02-28
FR2208520A5 (cg-RX-API-DMAC7.html) 1974-06-21
NL7316202A (cg-RX-API-DMAC7.html) 1974-05-31
CH579769A5 (cg-RX-API-DMAC7.html) 1976-09-15
JPS501759A (cg-RX-API-DMAC7.html) 1975-01-09

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