FR971976A - Automatic control method and devices based on differential temperature measurement - Google Patents

Automatic control method and devices based on differential temperature measurement

Info

Publication number
FR971976A
FR971976A FR971976DA FR971976A FR 971976 A FR971976 A FR 971976A FR 971976D A FR971976D A FR 971976DA FR 971976 A FR971976 A FR 971976A
Authority
FR
France
Prior art keywords
control method
automatic control
temperature measurement
devices based
differential temperature
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
Other languages
French (fr)
Inventor
Andre Huet
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 filed Critical
Application granted granted Critical
Publication of FR971976A publication Critical patent/FR971976A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G05D23/1909—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can only take two discrete values
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1931—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of one space

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Remote Sensing (AREA)
FR971976D 1940-11-27 1940-11-27 Automatic control method and devices based on differential temperature measurement Expired FR971976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR971976T 1940-11-27

Publications (1)

Publication Number Publication Date
FR971976A true FR971976A (en) 1951-01-24

Family

ID=9515637

Family Applications (1)

Application Number Title Priority Date Filing Date
FR971976D Expired FR971976A (en) 1940-11-27 1940-11-27 Automatic control method and devices based on differential temperature measurement

Country Status (1)

Country Link
FR (1) FR971976A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132514A (en) * 1960-07-28 1964-05-12 Jack D Plessinger Level indicator apparatus
US3512412A (en) * 1967-10-19 1970-05-19 Blaw Knox Co Liquid level indicating device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132514A (en) * 1960-07-28 1964-05-12 Jack D Plessinger Level indicator apparatus
US3512412A (en) * 1967-10-19 1970-05-19 Blaw Knox Co Liquid level indicating device

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