| 摘要 |
The invention can be used for fire alarm systems. The inventive detector consists of a main (1) and additional (12) smoke detectors comprising bases (2, 13) and electronic units (3, 14) which are arranged thereon and provided with smoke sensors (6, 15) disposed in horizontally ventilated smoke chambers (7, 16). The main detector (1) is provided with an internal status indicator (5) whose base (2) is dismountably connected to a base (8), the output contacts of the electronic unit (3) thereof are detachably connected to an alarm system loop (9) and to an external status indicator (10). The two indicators are arranged on a common vertical axis, are turned towards each other by the bases thereof and are rigidly connected to each other, for instance by a rigid bar (18). In one embodiment of the inventive alarm, the base (8) is provided with a through hole (19) whose cross-sectional dimensions are equal to or less than the cross-sectional dimensions of the bar (18) and of the additional detector (12). In the other embodiment, said additional detector is provided with a base (20). The detectors have equal cross-sectional dimensions, the bases vehicle control system thereof are connected to each other with the aid of a tubular sleeve provided with contacts on the external surface thereof. Said sleeve is coaxially arranged inside a third tubular base and detachably connected thereto. Said invention simplifies the operation conditions preserving high control fidelity. |
