FR2469763A1 - Explosive gas detector and housing - has sealed multicore cable providing low current supply and alarm signals for use in remote positions - Google Patents
Explosive gas detector and housing - has sealed multicore cable providing low current supply and alarm signals for use in remote positions Download PDFInfo
- Publication number
- FR2469763A1 FR2469763A1 FR7928025A FR7928025A FR2469763A1 FR 2469763 A1 FR2469763 A1 FR 2469763A1 FR 7928025 A FR7928025 A FR 7928025A FR 7928025 A FR7928025 A FR 7928025A FR 2469763 A1 FR2469763 A1 FR 2469763A1
- Authority
- FR
- France
- Prior art keywords
- box
- sensor
- explosion
- sealed
- gas detector
- 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
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR 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
Abstract
Description
L'objet de l'invention concerne un boitier détecteur explosimètre anti-déflagrant avec sorties d'alarme. The object of the invention relates to an explosion-proof explosimeter detector unit with alarm outputs.
Il est destiné à la détection des gaz ou vapeurs explosives dans les complexes industriels, sur les véhicules ou encore des zones très isolées nécessitant un dispositif à faible consommation d'énergie. It is intended for the detection of explosive gases or vapors in industrial complexes, on vehicles or even very isolated areas requiring a device with low energy consumption.
On utilisait jusqu'à ce jour, pour la détection des gaz explosifs, des modules électroniques situés dans une unité centrale ét une alimentation à courant constant ou à tension constante des sondes variées sur un boitier séparé. Hitherto, for the detection of explosive gases, electronic modules located in a central unit and a constant current or constant voltage supply of various probes have been used on a separate box.
Le dispositif suivant l'invention supprime l'emploi d' une unité centrale et rend compldtement indépendant les fonctions des différents détecteurs en rassemblant dans le boîtier anti-déflagrant, le capteur et le circuit électroniques tout en abaissant les consommations d'4nergie ainsi que les prix de revient. The device according to the invention eliminates the use of a central unit and makes the functions of the various detectors completely independent by bringing together in the explosion-proof box, the sensor and the electronic circuit while lowering the energy consumption as well as the cost price.
Il est constitué par le positionnement des divers éld- ments assemblés et combinés, afin de rassembler dans le boitier anti-déflagrant le capteur et le circuit électronique. It is made up of the positioning of the various assembled and combined elements, in order to gather the sensor and the electronic circuit in the explosion-proof box.
Sur le dessin annexé donné à titre d'exemple non limitatif d'une des formes de réalisation de l'objet de l'inven tion, l'appareil est représente dans son ensemble vu en coupe longitudinale. In the accompanying drawing given by way of nonlimiting example of one of the embodiments of the object of the invention, the device is shown as a whole seen in longitudinal section.
L'appareil est constitué par un boitier anti-déflagrant 1. Ce boitier contient une sonde 2 et le circuit électronique 3 et une alimentation à découpage 6, permettant de réduire le courant dans le cable. The device consists of an explosion-proof box 1. This box contains a probe 2 and the electronic circuit 3 and a switching power supply 6, making it possible to reduce the current in the cable.
Le câble blindé 7 à conducteurs multiples pour alimentations et sorties, est protégé par un presse-étoupe 4 avec c8ne-plomb 10 et est relié aux bornes de raccordement 5. The shielded cable 7 with multiple conductors for power supplies and outputs, is protected by a cable gland 4 with lead lead 10 and is connected to connection terminals 5.
La sonde 2 est pourvue d'un cône de protection de ruissellement 8 et d'un disque de protection -d'aspersion 9. The probe 2 is provided with a trickle protection cone 8 and a spray-protection disc 9.
Le boitier est muni d'orifices de fixation Il et comporte un couvercle 12. The box is provided with fixing holes II and has a cover 12.
Un plombage 13 est prévu pour empêcher la dissociation de la sonde aux électroniques. A seal 13 is provided to prevent dissociation of the probe from the electronics.
Le boitier détecteur peut être équipé de sondes antidéflagrantes. The detector box can be fitted with explosion-proof probes.
Les éléments de fixation permettent de placer le pluS près possible des sources de fuites éventuelles en tenant compte de la densité du gaz à détecter. The fixing elements make it possible to place most of the possible sources of leaks, taking into account the density of the gas to be detected.
Cet appareil simplifie et d'encombrement réduit, mais à haute fiabilité, est destiné à la surveillance automatique de l'atwosphère des fuites de gaz ou vapeurs inflammables. This simplified and compact device, but with high reliability, is intended for automatic monitoring of the atwosphere for leaks of flammable gases or vapors.
Il utilise comme principe l'oxydation catalytique à basse température associée à un couple de thermo- résistances. As a principle, it uses catalytic oxidation at low temperature associated with a couple of thermoresistors.
Sa consommation en énergie est dix fois moindre que celle des détecteurs classiques. Il s'adapte à tous les sys tèmes de télécommunications. Its energy consumption is ten times less than that of conventional detectors. It adapts to all telecommunications systems.
Enfin la partie électronique assurant l'alimentation du capteur, l'amplificateur, les comparateurs et les interfaces sont regroupés avec le capteur dans le boîtier anti-déflagrant. Finally the electronic part ensuring the supply of the sensor, the amplifier, the comparators and the interfaces are grouped with the sensor in the explosion-proof box.
Toutefois les formes, dimensions et dispositions des différents éléments pourront varier dans la limite des équivalents, comme d'ailleurs les matières utilisées pour leur fabrication, sans changer pour cela la conception générale de l'in- vention qui vient d'être décrite. However, the shapes, dimensions and arrangements of the various elements may vary within the limit of the equivalents, like the materials used for their manufacture, without changing the general conception of the invention which has just been described.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7928025A FR2469763A1 (en) | 1979-11-09 | 1979-11-09 | Explosive gas detector and housing - has sealed multicore cable providing low current supply and alarm signals for use in remote positions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7928025A FR2469763A1 (en) | 1979-11-09 | 1979-11-09 | Explosive gas detector and housing - has sealed multicore cable providing low current supply and alarm signals for use in remote positions |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2469763A1 true FR2469763A1 (en) | 1981-05-22 |
FR2469763B1 FR2469763B1 (en) | 1984-11-09 |
Family
ID=9231645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7928025A Granted FR2469763A1 (en) | 1979-11-09 | 1979-11-09 | Explosive gas detector and housing - has sealed multicore cable providing low current supply and alarm signals for use in remote positions |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2469763A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9541428B2 (en) | 2012-09-10 | 2017-01-10 | Endress + Hauser Flowtec Ag | Interface between a sensor unit and an explosion resistant housing |
CN111854855A (en) * | 2020-09-23 | 2020-10-30 | 国网江苏省电力有限公司电力科学研究院 | Multi-scene cable fire characteristic quantity online monitoring method and device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1506941A (en) * | 1966-12-29 | 1967-12-22 | Inst Gornogo Dela Imeni Skochi | Portable thermochemical gas analyzer |
FR2425067A1 (en) * | 1978-05-03 | 1979-11-30 | Oldham France Sa | Detection of dangerous gas in mine - utilises filament detectors in bridge circuit to operate flashing indicator lamp |
-
1979
- 1979-11-09 FR FR7928025A patent/FR2469763A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1506941A (en) * | 1966-12-29 | 1967-12-22 | Inst Gornogo Dela Imeni Skochi | Portable thermochemical gas analyzer |
FR2425067A1 (en) * | 1978-05-03 | 1979-11-30 | Oldham France Sa | Detection of dangerous gas in mine - utilises filament detectors in bridge circuit to operate flashing indicator lamp |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9541428B2 (en) | 2012-09-10 | 2017-01-10 | Endress + Hauser Flowtec Ag | Interface between a sensor unit and an explosion resistant housing |
EP2893299B1 (en) * | 2012-09-10 | 2018-11-21 | Endress+Hauser Flowtec AG | Interface between a sensor unit and an explosion-proof housing |
CN111854855A (en) * | 2020-09-23 | 2020-10-30 | 国网江苏省电力有限公司电力科学研究院 | Multi-scene cable fire characteristic quantity online monitoring method and device |
Also Published As
Publication number | Publication date |
---|---|
FR2469763B1 (en) | 1984-11-09 |
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Legal Events
Date | Code | Title | Description |
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TP | Transmission of property | ||
ST | Notification of lapse | ||
AR | Application made for restoration | ||
BR | Restoration of rights | ||
ST | Notification of lapse |