EP0187053B1 - Mischmaterial zur Prüfung von Rauchdetektoren - Google Patents

Mischmaterial zur Prüfung von Rauchdetektoren Download PDF

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Publication number
EP0187053B1
EP0187053B1 EP85402056A EP85402056A EP0187053B1 EP 0187053 B1 EP0187053 B1 EP 0187053B1 EP 85402056 A EP85402056 A EP 85402056A EP 85402056 A EP85402056 A EP 85402056A EP 0187053 B1 EP0187053 B1 EP 0187053B1
Authority
EP
European Patent Office
Prior art keywords
detectors
weight
composition
bars
smoke
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 - Lifetime
Application number
EP85402056A
Other languages
English (en)
French (fr)
Other versions
EP0187053A1 (de
Inventor
Jean-Louis Pean
Catherine Desvard
Jean-Paul Barbier
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Priority to AT85402056T priority Critical patent/ATE51097T1/de
Publication of EP0187053A1 publication Critical patent/EP0187053A1/de
Application granted granted Critical
Publication of EP0187053B1 publication Critical patent/EP0187053B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
    • G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits

Definitions

  • the present invention relates to compositions for controlling the operation of fire detection installations.
  • the smoke, heat, and combustible gas detectors are of several very diverse types as a principle.
  • Ionization smoke detectors the operation of which is related to changes in the electrical conductivity of air in the presence of fire aerosols, react to the effect of combustion products in the form of visible fire aerosols or invisible.
  • an electric field is established between two electrodes by means of direct voltage.
  • the air between the electrodes is ionized, for example by means of a radioactive source, the resulting ions move under the effect of the field in the direction of the inversely charged electrode.
  • fire aerosols enter the space between the two electrodes, part of the ions are deposited on the particles of these aerosols, until they are a thousand times heavier. The heavy ions thus obtained hardly move anymore due to the mass inertia and therefore no longer contribute to the transport of the charges and the current decreases.
  • Combustible gas detectors consist of a semiconductor gas sensor selectively sensitive to certain combustible gases such as methane, propane and hydrogen.
  • the highly sensitive opto-electronic system consisting of a specially developed semiconductor diode as an infrared light source, a silicon cell as a light receiver, a light absorber and protection against light from other sources, works on the principle of light scattering.
  • the diode optics emit pulses of light in the form of a hollow cone. As long as the measurement chamber contains no smoke, the infrared light does not reach the receiver arranged in the center of the axis of the light cone. Upon entering the labyrinth chamber, the smoke particles scatter the light rays in all directions. Part of the scattered light reaches the photoelectric receiver which then produces an electrical signal.
  • ionization smoke detectors products are used which have the property of stopping the ions created in the air by the radioactive source, in particular the formation of sufficiently heavy particles, and of capturing radiation from radioactive sources. Mention may be made of chloro-fluorinated, fluorinated organic products and gases such as nitrous oxide and carbon dioxide.
  • the combustible gas detectors respond selectively according to the nature of the hydrocarbon; on the other hand, they are all more sensitive to other products such as alcohols, ethers, aldehydes, ketones and, in general, to many volatile organic compounds.
  • an aerosol of fine droplets of liquid is sent, of products with a low vapor pressure less than 0.1 millibar, and preferably less than 0.01 millibar, dissolved in a large quantity of solvent with high vapor pressure.
  • a liquid is sent which by vaporizing cools the atmosphere of the chamber enough to transform the water vapor of the air into ice crystals.
  • US Patent 4,301,674 describes a smoke detector tester, in the form of an aerosol consisting of 70% of a hydrocarbon propellant such as butane and propane, approximately 5% of isophthalic alcohol and 25% of dioctyl phthalate.
  • compositions have been found to verify the operation of various types of smoke and combustible gas detectors. These compositions in the form of homogeneous mixtures of active products with respect to the three main types of detectors currently used, have the advantage of being more versatile than existing mixtures.
  • the active products are introduced in proportions such that there is - whatever the type of detector - a low consumption of the composition of the mixture at each test, of 0.5 to 2 grams, corresponding to injection time of 1 to 2 seconds; very short detector response time, maximum 10 seconds; and a very short remanence time of less than 10 seconds.
  • the remanence time is the time during which the detector remains in alarm after injection.
  • the mixture of active products also meets the following requirements: no risk of toxicity or corrosion, no formation of solid residues at very low vapor pressure which would foul the detectors.
  • packaging in an aerosol can is easy and this mixture corresponds to aerosol standards, and is not subject to any specific labeling relating to toxic and flammable mixtures.
  • the mixtures developed in the form of an aerosol to verify the operation of all types of smoke, optical or ionization detectors and combustible gases consist of at least one halogenoalkane in an amount greater than 75% by weight, at least one volatile organic compound with simple oxygen function of the alcohol type, oxo derivative, etheroxide in an amount less than 15% by weight, an organic product with low vapor pressure, less than 0.1 millibar, in very small amount at most a few percent weight.
  • a propellant gas very soluble in these liquids is introduced into the mixture, such as nitrous oxide or carbon dioxide.
  • haloalkanes can be chosen from chlorofluoro, chloro or fluoroalkanes, such as trichlorotrifluoroethane. Each mixture may contain one or more haloalkanes.
  • the volatile organic compounds in particular the compounds with a simple oxygen function, such as alcohols, in particular acyclic alcohols, oxo derivatives, etheroxides, and among alkyl oxides, ethyl ether has proved particularly advantageous.
  • alkyl phthalates are satisfactorily suitable as organic products with low vapor pressure, mention may be made of ethyl phthalate. and butyl phthalate.
  • compositions containing from 80 to 95% by weight of trichlorotrifluoroethane, approximately 1 to 10% by weight of ethyl ether and between approximately 0.05 and 1% by weight of alkyl phthalate and the complement to 100 with protoxide nitrogen have proven to be very satisfactory control products in fire detection; in particular, the compositions containing 90 to 95% by weight of trichlorotrifluoroethane, preferably between 92 and 92.5%, and approximately 1% of ethyl ether, between 0.05 and 0.10% of ethyl phthalate or butyl and the complement to 100 in nitrous oxide.
  • composition expressed as a percentage by weight
  • the density of the mixture is 1.32.
  • Composition% by weight density 1.33.
  • Flammability 10% of product with flash point below 100 ° C; flammability of the zero dispersion; toxicity: none.
  • Flammability 10% of product with flash point below 100 ° C; flammability of the zero dispersion; Toxicity: none, fog / smoke appearance, wetting at 10 cm, non-wetting at 20 cm.
  • Flammability 10% of product with flash point below 100 ° C; flammability of the zero dispersion; Toxicity: none, fog / smoke appearance, wetting at 10 cm, non-wetting at 15 cm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Fire Alarms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Sampling And Sample Adjustment (AREA)

Claims (3)

1. Anwendung einer Verbindung mit 80 bis 95 Gew.-% Trichlortrifluoräthan, ca. 1- bis 10 Gew.-% Äthyläther, zwischen ca. 0,05 und 1 Gew.-% Äthylphthalat oder Butylphthalat und dem Rest auf 100% in Form von Stickstoffprotoxid zur Überprüfung von Brandmeldeanlagen, insbesondere von Brenngasmeldern.
2. Anwendung der Verbindung nach Anspruch 1 mit 90 bis 95 Gew.-% Trichlortrifluoräthan, ca. 1 Gew.- % Äthyläther, zwischen 0,05 und 0,10 Prozent Äthylphthalat oder Butylphthalat und dem Rest auf 100 in Form von Stickstoffprotoxid.
3. Anwendung der Verbindung nach Anspruch 2 mit 92 bis 92,5 Gew.-% Trichlortrifluoräthan, ca. 1 Gew.-% Äthyläther, zwischen ca. 0,05 und 0,10 Gew.-% Äthylphthalat oder Butylphthalat und dem Rest auf 100 in Form von Stickstoffprotoxid.
EP85402056A 1984-10-30 1985-10-23 Mischmaterial zur Prüfung von Rauchdetektoren Expired - Lifetime EP0187053B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85402056T ATE51097T1 (de) 1984-10-30 1985-10-23 Mischmaterial zur pruefung von rauchdetektoren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8416562 1984-10-30
FR8416562A FR2572293B1 (fr) 1984-10-30 1984-10-30 Composition de controle du fonctionnement des installations de detection d'incendie et application a divers types de detecteurs

Publications (2)

Publication Number Publication Date
EP0187053A1 EP0187053A1 (de) 1986-07-09
EP0187053B1 true EP0187053B1 (de) 1990-03-14

Family

ID=9309126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85402056A Expired - Lifetime EP0187053B1 (de) 1984-10-30 1985-10-23 Mischmaterial zur Prüfung von Rauchdetektoren

Country Status (6)

Country Link
US (1) US4715985A (de)
EP (1) EP0187053B1 (de)
AT (1) ATE51097T1 (de)
CA (1) CA1246849A (de)
DE (1) DE3576592D1 (de)
FR (1) FR2572293B1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5060503A (en) * 1990-02-08 1991-10-29 Bacharach, Inc. Test kit for gas detectors
US5139699A (en) * 1990-06-27 1992-08-18 Leon Cooper Spray formulation for the testing of smoke detectors
AU635179B2 (en) * 1990-06-27 1993-03-11 Leon Cooper Improved spray formulation for the testing of smoke detectors and delivery system therefor
US5076966A (en) * 1990-07-02 1991-12-31 John J. McSheffrey Composition and method for testing smoke detectors
US5362568A (en) * 1992-02-18 1994-11-08 Associated Universities, Inc. Pre-fire warning system and method using a perfluorocarbon tracer
US5785891A (en) * 1996-09-12 1998-07-28 Leon Cooper Spray formulation for the testing of smoke detectors
DE10047194C1 (de) * 2000-09-23 2002-03-07 Bosch Gmbh Robert Vorrichtung und Verfahren zur Prüfung eines Brandmelders
GB2373359B (en) 2001-03-16 2005-04-13 No Climb Products Ltd Composition for use in the testing of smoke detectors
EP2172531A1 (de) * 2008-10-03 2010-04-07 Siemens Aktiengesellschaft Funktionsüberprüfung für einen Gasalarmmelder
EP2711907B1 (de) 2012-09-24 2015-01-21 Hekatron Vertriebs GmbH Melder, Testvorrichtung und Verfahren zum Prüfen eines Melders

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2285950A (en) * 1940-01-10 1942-06-09 William N Sullivan Method of applying insecticides
LU34385A1 (de) * 1956-05-24
CH501284A (de) * 1969-11-14 1970-12-31 Cerberus Ag Vorrichtung zur Prüfung der Funktionsbereitschaft von Rauchmeldern
US3822145A (en) * 1971-11-15 1974-07-02 Colgate Palmolive Co Fabric softening
DE2734265A1 (de) * 1977-07-29 1979-02-08 Bayer Ag Treibgasmischung fuer spraydosen
CH634480A5 (de) * 1977-11-25 1983-02-15 Schwarzkopf Gmbh Hans Unter druck stehendes aerosolpraeparat.
US4301674A (en) * 1980-01-14 1981-11-24 Haines William H Smoke detector tester

Also Published As

Publication number Publication date
CA1246849A (fr) 1988-12-20
FR2572293B1 (fr) 1987-01-30
ATE51097T1 (de) 1990-03-15
EP0187053A1 (de) 1986-07-09
FR2572293A1 (fr) 1986-05-02
DE3576592D1 (de) 1990-04-19
US4715985A (en) 1987-12-29

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