Method and apparatus for detecting a sprinkler actuation event

Details Method and apparatus for detecting a sprinkler actuation event Method and apparatus for detecting a sprinkler actuation event

2006-11-14

2006-11-14

Hwu, Davis (Department: 3752)

Fire extinguishers

Processes

C169S008000, C169S016000, C239S067000, C239S068000, C239S069000, C239S201000, C239S203000, C239S204000

Reexamination Certificate

active

07134507

ABSTRACT:
A method of detecting the actuation of a sprinkler involves sensing a first fluid pressure at a first flow cross section, in one of the sprinkler and a conduit in which the sprinkler is mounted, sensing a second fluid pressure at a second flow cross section, in the sprinkler, wherein said first flow cross section is larger than said second flow cross section, and comparing the fluid pressures sensed at the first and second flow cross sections in order to detect a change in the relation of the fluid pressures due to actuation of the sprinkler, and thereby detect actuation of the sprinkler. The fluid pressures are sensed by ports in the sprinkler, or by one port in the sprinkler and one port in the conduit, and at least one transducer connected to the ports, and output signals from the transducer are sent to a computer or other recording instrument.

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