Alarms for monitoring operation of sensors in a fire-suppression

Details Alarms for monitoring operation of sensors in a fire-suppression Alarms for monitoring operation of sensors in a fire-suppression

1997-01-23

1999-01-26

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340691, 340693, 340603, 340618, 169 5, 169 23, 137551, 137557, G08B 2900, E03B 707

Patent

active

058642870

ABSTRACT:
Alarms for testing sensors, particularly those used in fire-suppression systems, are described. In one aspect of the invention, the alarm includes an audio and/or a visual indicator operably coupled to the housing of a sensor. The audio indicator may be a speaker that beeps when the sensor is activated. The visual indicator may be one or more LEDs that are illuminated when the sensor is activated. The alarm also can be used to determine whether power and ground conductors extending to the sensor are properly connected. Additionally, the alarm can be used to determine whether one or more conductors extending from the sensor to the control panel are properly connected.

REFERENCES:
patent: 4406398 (1983-09-01), Perkins
patent: 5139044 (1992-08-01), Otten et al.
patent: 5240022 (1993-08-01), Franklin
patent: 5638847 (1997-06-01), Hoch, Jr. et al.
patent: 5655561 (1997-08-01), Wendel et al.

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