EP 0133990 B1 19871104 - SMOKE SENSOR ARRANGEMENT OPERATING BY THE EXTINGUISH PRINCIPLE, AND FIRE ASSEMBLY HAVING SUCH A SMOKE SENSOR ARRANGEMENT
Title (en)
SMOKE SENSOR ARRANGEMENT OPERATING BY THE EXTINGUISH PRINCIPLE, AND FIRE ASSEMBLY HAVING SUCH A SMOKE SENSOR ARRANGEMENT
Publication
Application
Priority
DE 3328043 A 19830803
Abstract (en)
[origin: EP0133990A1] 1. A smoke alarm arrangement operating in accordance with the extinguish principle, comprising a plurality of light transmitters (S) and at least one light receiver (E) arranged in a common plane (GE), where the transmitting and receiving lobes (SK, EK) have a specified radiation angle (phi) and the optical axes (OA) of the respective radiation lobes (SK, EK) extend virtually parallel to the common plane (GE), where the common plane is parallel to the room ceiling and the radiation angles (phi H ) of each of the light receivers (E) in the common plane (GE) are substantially greater than the radiation angles (phi) at right angles to the common plane (GE), characterised in that the radiation angles (phi H ) of the light transmitters in the common plane (GE) are substantially greater than the radiation angles (phi V ) at right angles to the common plane (GE), and that the light transmitters and receivers (S, E) are provided with a simple optical unit (4) but no adjusting device for the radiation characteristic.
IPC 1-7
IPC 8 full level
G08B 17/10 (2006.01); G08B 17/103 (2006.01)
CPC (source: EP)
G08B 17/103 (2013.01); G08B 17/113 (2013.01)
Designated contracting state (EPC)
AT BE DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0133990 A1 19850313; EP 0133990 B1 19871104; AT E30645 T1 19871115; DE 3328043 A1 19850221; DE 3467266 D1 19871210
DOCDB simple family (application)
EP 84109118 A 19840801; AT 84109118 T 19840801; DE 3328043 A 19830803; DE 3467266 T 19840801