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)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Electrochemistry (AREA)
  • Immunology (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 (xx) 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 (xx)
JP (1) JPS501759A (xx)
CH (1) CH579769A5 (xx)
DD (1) DD109277A5 (xx)
DE (1) DE2359595A1 (xx)
ES (1) ES420912A1 (xx)
FR (1) FR2208520A5 (xx)
GB (1) GB1446087A (xx)
IT (1) IT1002072B (xx)
NL (1) NL7316202A (xx)
PL (1) PL91248B1 (xx)
RO (1) RO81734A (xx)
ZA (1) ZA738944B (xx)

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
EP2514641B1 (en) * 2009-05-26 2014-07-16 Toyota Jidosha Kabushiki Kaisha A control apparatus, an on-vehicle device and a method

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

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