INSTALLATION DE CONTROLE DE LA QUALITE ATMOSPHERIQUE NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON
A.INSTALLATION DE CONTROLE ATMOSPHERIQUE, NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON.B.CARACTERISEE EN CE QU'ELLE COMPREND UN DETECTEUR DE GAZ 10, UN INDICATEUR D'ETAT 16 A DIODE ET UN MICROPROCESSEUR 18 AVEC DISPOSITIFS PRODUISANT DES PREMIERES IMPULSIONS ELECTRIQUES DE L...
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Main Author | |
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Format | Patent |
Language | French |
Published |
21.01.1983
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Subjects | |
Online Access | Get full text |
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Abstract | A.INSTALLATION DE CONTROLE ATMOSPHERIQUE, NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON.B.CARACTERISEE EN CE QU'ELLE COMPREND UN DETECTEUR DE GAZ 10, UN INDICATEUR D'ETAT 16 A DIODE ET UN MICROPROCESSEUR 18 AVEC DISPOSITIFS PRODUISANT DES PREMIERES IMPULSIONS ELECTRIQUES DE LARGEUR CONSTANTE, DES SECONDES IMPULSIONS DE LARGEUR VARIABLE EN FONCTION DE LA TENEUR EN GAZ, DES MOYENS DE COMPARAISON PRODUISANT DES TROISIEMES IMPULSIONS CARACTERISTIQUES DE L'ATMOSPHERE TRANSMISE A UN INDICATEUR 20.C.INSTALLATION A MONTER SUR DES MACHINES DE TRAVAUX SOUTERRAINS DANS LES MINES.
A three-wire digital atmospheric sampling system, particularly adapted to detect methane in mines, wherein accuracy is increased by ratiometric analog-to-digital conversion synchronized by a microprocessor. A reset signal, and read-out pulses indicative of the atmospheric condition, are transmitted along the same signal wire as are digital ratiometric signals, thus enabling the use of three conductors only between an atmospheric sampling probe, a microprocessor, and a visual read-out console. |
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AbstractList | A.INSTALLATION DE CONTROLE ATMOSPHERIQUE, NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON.B.CARACTERISEE EN CE QU'ELLE COMPREND UN DETECTEUR DE GAZ 10, UN INDICATEUR D'ETAT 16 A DIODE ET UN MICROPROCESSEUR 18 AVEC DISPOSITIFS PRODUISANT DES PREMIERES IMPULSIONS ELECTRIQUES DE LARGEUR CONSTANTE, DES SECONDES IMPULSIONS DE LARGEUR VARIABLE EN FONCTION DE LA TENEUR EN GAZ, DES MOYENS DE COMPARAISON PRODUISANT DES TROISIEMES IMPULSIONS CARACTERISTIQUES DE L'ATMOSPHERE TRANSMISE A UN INDICATEUR 20.C.INSTALLATION A MONTER SUR DES MACHINES DE TRAVAUX SOUTERRAINS DANS LES MINES.
A three-wire digital atmospheric sampling system, particularly adapted to detect methane in mines, wherein accuracy is increased by ratiometric analog-to-digital conversion synchronized by a microprocessor. A reset signal, and read-out pulses indicative of the atmospheric condition, are transmitted along the same signal wire as are digital ratiometric signals, thus enabling the use of three conductors only between an atmospheric sampling probe, a microprocessor, and a visual read-out console. |
Author | HERBERT HELLER |
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Notes | Application Number: FR19820006879 |
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PublicationDateYYYYMMDD | 1983-01-21 |
PublicationDate_xml | – month: 01 year: 1983 text: 19830121 day: 21 |
PublicationDecade | 1980 |
PublicationYear | 1983 |
RelatedCompanies | MINE SAFETY APPLIANCES CY |
RelatedCompanies_xml | – name: MINE SAFETY APPLIANCES CY |
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Snippet | A.INSTALLATION DE CONTROLE ATMOSPHERIQUE, NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON.B.CARACTERISEE EN CE QU'ELLE COMPREND UN DETECTEUR DE GAZ... |
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SubjectTerms | ALARM SYSTEMS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS TESTING |
Title | INSTALLATION DE CONTROLE DE LA QUALITE ATMOSPHERIQUE NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON |
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