Alarms for monitoring operation of sensors in a...

G - Physics – 08 – B

Patent

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G08B 29/00 (2006.01) A62C 35/11 (2006.01) A62C 37/50 (2006.01)

Patent

CA 2227802

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.

Description d'alarmes destinées aux capteurs d'essai, servant en particulier dans les systèmes d'extinction incendie. Dans une des configurations de cette invention, l'alarme comprend un indicateur sonore et (ou) visuel monté de façon opérationnelle sur le boîtier d'un capteur. L'indicateur sonore peut avoir la forme d'un haut-parleur qui émet des bips lorsque le capteur est activé. L'indicateur visuel peut avoir la forme d'une ou de plusieurs LED qui s'allument lorsque le capteur est activé. L'alarme peut également servir à déterminer si les conducteurs d'alimentation et de mise à la terre reliés au capteur sont correctement branchés. De plus, l'alarme peut servir à déterminer si un ou plusieurs conducteurs qui relient le capteur au tableau de commande sont correctement branchés.

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