EP0065497A1 - Detektorgerät für entzündbares Gas - Google Patents

Detektorgerät für entzündbares Gas Download PDF

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Publication number
EP0065497A1
EP0065497A1 EP82830111A EP82830111A EP0065497A1 EP 0065497 A1 EP0065497 A1 EP 0065497A1 EP 82830111 A EP82830111 A EP 82830111A EP 82830111 A EP82830111 A EP 82830111A EP 0065497 A1 EP0065497 A1 EP 0065497A1
Authority
EP
European Patent Office
Prior art keywords
detector
flammable gas
gas detector
circuit
bridge circuit
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
EP82830111A
Other languages
English (en)
French (fr)
Other versions
EP0065497B1 (de
Inventor
Franco Maria Conte'
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT82830111T priority Critical patent/ATE15562T1/de
Publication of EP0065497A1 publication Critical patent/EP0065497A1/de
Application granted granted Critical
Publication of EP0065497B1 publication Critical patent/EP0065497B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire

Definitions

  • the invention relates to a flammable gas detector.
  • the object of the present invention is to propose a particularly advantageous prevention device for installations which use flammable gases in closed environments.
  • the invention solves the problem of detecting the presence of flammable gas in dangerous quantity and, at the same time, controlling the operation or intervention of a device for alarm or emergence, with a detector element inserted in a branch of a circuit with bridge of re sistances which detector, in the presence of gas in quantity in percentage greater than the prefixed limit, determines, in said circuit with resistance bridge, a degree of imbalance which produces an electrical voltage signal to be used to control electronically a tear device or remote signaling or intervention.
  • FIG. 1 shows the functional block diagram of a flammable gas detection device according to the invention
  • Fig. 2 shows the diagram relating to the circuit.
  • the mains power supply (A) uses, to obtain higher stability, a transistor (T1), a Zeener diode (Z1) and an integrated circuit (Ic1).
  • the bridge circuit (PM) is formed by two resistors (Ces) (R2) and (R4), a variable resistor (R3) and the detector (R) mentioned above; two of the vertices of the bridge are connected to the input terminals (2-3) of a differential amplifier (Ad) whose output (6) is transferred to the terminal (4) of an integrated circuit (Ic2) of the 'note oscillator (G) which functions as a generator of low frequency oscillations; in addition, the output (3) of said integrated circuit (Ic2) is connected, by a capacitor (C8) and a resistor (R7) in series, to the above-mentioned electro-acoustic device (TA).
  • TA electro-acoustic device
  • an auxiliary power supply section comprising: a buffer battery with its relative automatic recharging circuit, a device for signaling a power interruption and failure the battery as well as a timer circuit (Tp) which activates the auxiliary power section with an intermittence which can be adjusted as desired.
  • This operating condition is maintained throughout the time that the sensor (R) continues to detect a percentage of gas greater than that prefixed, this percentage is preset at will by varying the intervention threshold obtained by acting, through of the potentiometer (R3); on the balance state of the bridge.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Emergency Alarm Devices (AREA)
  • Control Of Combustion (AREA)
EP82830111A 1981-05-05 1982-04-26 Detektorgerät für entzündbares Gas Expired EP0065497B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82830111T ATE15562T1 (de) 1981-05-05 1982-04-26 Detektorgeraet fuer entzuendbares gas.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT939981 1981-05-05
IT09399/81A IT1167878B (it) 1981-05-05 1981-05-05 Apparecchio rivelatore di gas infiammabile

Publications (2)

Publication Number Publication Date
EP0065497A1 true EP0065497A1 (de) 1982-11-24
EP0065497B1 EP0065497B1 (de) 1985-09-11

Family

ID=11129547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82830111A Expired EP0065497B1 (de) 1981-05-05 1982-04-26 Detektorgerät für entzündbares Gas

Country Status (21)

Country Link
EP (1) EP0065497B1 (de)
JP (2) JPS57186160A (de)
AR (1) AR228973A1 (de)
AT (1) ATE15562T1 (de)
AU (2) AU8322682A (de)
BR (1) BR8202411A (de)
CA (1) CA1237505A (de)
DE (1) DE3266133D1 (de)
DK (1) DK159167C (de)
ES (1) ES8304343A1 (de)
FI (1) FI75430C (de)
GR (1) GR75842B (de)
IE (1) IE52445B1 (de)
IL (1) IL65497A0 (de)
IT (1) IT1167878B (de)
MX (1) MX151271A (de)
NO (1) NO153236C (de)
NZ (1) NZ200307A (de)
PT (1) PT74843B (de)
YU (1) YU44342B (de)
ZA (1) ZA823039B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126036B1 (de) * 1983-05-17 1987-08-26 Controfugas S.R.L. Detektorgerät für brennbares Gas mit vorherbestimmtem Eingreifer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6071999U (ja) * 1983-10-21 1985-05-21 矢崎総業株式会社 ガス警報器
NO317999B3 (no) 2002-06-28 2010-07-05 Sts Gruppen As Anordning for sikring av driften av et habitat

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221320A (en) * 1961-04-13 1965-11-30 Komyo Rikagaku Kogyo Kabushiki Gas alarm circuit
US3482233A (en) * 1967-04-13 1969-12-02 Eastern Co Gas detector system
US3750123A (en) * 1971-11-01 1973-07-31 T J Connelly Constr Co Inc Smoke sensing circuit with battery standby
US3950739A (en) * 1974-10-30 1976-04-13 Campman James P Detector for detecting and locating the source of a contaminating gas or smoke in the atmosphere
GB1474700A (en) * 1974-12-16 1977-05-25 Neotronics Ltd Device for detecting and indicating the presence in a fluid environment of a potentially dangerous constituent

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216987U (de) * 1975-07-24 1977-02-05
JPS5511496Y2 (de) * 1975-11-17 1980-03-12
JPS5433185U (de) * 1977-08-09 1979-03-05

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221320A (en) * 1961-04-13 1965-11-30 Komyo Rikagaku Kogyo Kabushiki Gas alarm circuit
US3482233A (en) * 1967-04-13 1969-12-02 Eastern Co Gas detector system
US3750123A (en) * 1971-11-01 1973-07-31 T J Connelly Constr Co Inc Smoke sensing circuit with battery standby
US3950739A (en) * 1974-10-30 1976-04-13 Campman James P Detector for detecting and locating the source of a contaminating gas or smoke in the atmosphere
GB1474700A (en) * 1974-12-16 1977-05-25 Neotronics Ltd Device for detecting and indicating the presence in a fluid environment of a potentially dangerous constituent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126036B1 (de) * 1983-05-17 1987-08-26 Controfugas S.R.L. Detektorgerät für brennbares Gas mit vorherbestimmtem Eingreifer

Also Published As

Publication number Publication date
NO153236B (no) 1985-10-28
GR75842B (de) 1984-08-02
DK185582A (da) 1982-11-06
JPS57186160A (en) 1982-11-16
DK159167B (da) 1990-09-10
CA1237505A (en) 1988-05-31
IE821010L (en) 1982-11-05
ATE15562T1 (de) 1985-09-15
DE3266133D1 (en) 1985-10-17
IE52445B1 (en) 1987-10-28
EP0065497B1 (de) 1985-09-11
NO821461L (no) 1982-11-08
ES511787A0 (es) 1983-02-16
NZ200307A (en) 1985-05-31
AR228973A1 (es) 1983-05-13
NO153236C (no) 1986-02-05
FI821569A0 (fi) 1982-05-05
JPH0374352U (de) 1991-07-25
PT74843B (en) 1983-12-02
ES8304343A1 (es) 1983-02-16
ZA823039B (en) 1983-03-30
FI821569L (fi) 1982-11-06
IT8109399A0 (it) 1981-05-05
FI75430B (fi) 1988-02-29
BR8202411A (pt) 1983-04-12
FI75430C (fi) 1988-06-09
YU44342B (en) 1990-06-30
DK159167C (da) 1991-02-11
IL65497A0 (en) 1982-07-30
JPH0424439Y2 (de) 1992-06-09
IT1167878B (it) 1987-05-20
MX151271A (es) 1984-10-29
AU8322682A (en) 1982-11-11
PT74843A (en) 1982-06-01
AU1843388A (en) 1988-09-22
YU94582A (en) 1985-03-20

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