FR2269711A1 - Fire or protection alarm detector - has magnetic circuit with two E-shaped elements with jumper - Google Patents

Fire or protection alarm detector - has magnetic circuit with two E-shaped elements with jumper

Info

Publication number
FR2269711A1
FR2269711A1 FR7415044A FR7415044A FR2269711A1 FR 2269711 A1 FR2269711 A1 FR 2269711A1 FR 7415044 A FR7415044 A FR 7415044A FR 7415044 A FR7415044 A FR 7415044A FR 2269711 A1 FR2269711 A1 FR 2269711A1
Authority
FR
France
Prior art keywords
arms
magnetic circuit
jumper
fire
shaped elements
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.)
Granted
Application number
FR7415044A
Other languages
French (fr)
Other versions
FR2269711B3 (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.)
Metalimphy SA
Original Assignee
Metalimphy SA
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 Metalimphy SA filed Critical Metalimphy SA
Priority to FR7415044A priority Critical patent/FR2269711A1/en
Publication of FR2269711A1 publication Critical patent/FR2269711A1/en
Application granted granted Critical
Publication of FR2269711B3 publication Critical patent/FR2269711B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/36—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils
    • G01K7/38—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils the variations of temperature influencing the magnetic permeability
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/08—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values
    • G01K3/10—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of time, e.g. reacting only to a quick change of temperature

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

The detector has a flux generator in a magnetic circuit (2) having an element (7) which can move between a sticking position with a gap, acting upon an alarm or protection circuit. The closed magnetic circuit (2) comprises 3 arms (3, 5, 6) in the form of 2 E' face to face with an excitation coil (4) on one of the arms (3) and the two other arms (5, 6) being for flux closure purposes. The two E sections are made from different magnetic materials, one being a low Curie point alloy. For each E, the two flux closure arms have different reluctances. The moving element comprises a jumper (7) which forms a path between the two flux closure arms (5, 6). One of these arms (5) is exposed to the ambient environment to be controlled while the other one (6) is thermally insulated.
FR7415044A 1974-04-30 1974-04-30 Fire or protection alarm detector - has magnetic circuit with two E-shaped elements with jumper Granted FR2269711A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7415044A FR2269711A1 (en) 1974-04-30 1974-04-30 Fire or protection alarm detector - has magnetic circuit with two E-shaped elements with jumper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7415044A FR2269711A1 (en) 1974-04-30 1974-04-30 Fire or protection alarm detector - has magnetic circuit with two E-shaped elements with jumper

Publications (2)

Publication Number Publication Date
FR2269711A1 true FR2269711A1 (en) 1975-11-28
FR2269711B3 FR2269711B3 (en) 1976-05-21

Family

ID=9138320

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7415044A Granted FR2269711A1 (en) 1974-04-30 1974-04-30 Fire or protection alarm detector - has magnetic circuit with two E-shaped elements with jumper

Country Status (1)

Country Link
FR (1) FR2269711A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083798A1 (en) * 2003-03-17 2004-09-30 Mems-Id Pty Ltd. Temperature sensing devices, systems and methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083798A1 (en) * 2003-03-17 2004-09-30 Mems-Id Pty Ltd. Temperature sensing devices, systems and methods

Also Published As

Publication number Publication date
FR2269711B3 (en) 1976-05-21

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Legal Events

Date Code Title Description
CD Change of name or company name