Fluid flow detector for a fire alarm system

Details Fluid flow detector for a fire alarm system Fluid flow detector for a fire alarm system

1976-02-05

1977-09-27

Caldwell, John W.

Communications: electrical

Systems

Call station

340409, 169 23, G08B 2100

Patent

active

040514676

ABSTRACT:
A sprinkler flow detector which can detect and rapidly respond to the onset of water flow in a sprinkler system which results, for example, from the release of one or more sprinklers. The detector senses the pressure vs. time profile of the system or house side of the sprinkler system. An increase in pressure is accurately tracked without causing alarm. If, however, the pressure falls in excess of certain predetermined rates and amounts, and holds in the lower state for in excess of a second certain predetermined amount of time, the detector enters an alarm state. In a preferred embodiment the detector features a trouble state in which it responds to one of several monitored conditions, for example, a component failure in the detector electrical circuitry, excessive pressure in the sprinkler system, or dangerously low pressure in the sprinkler system.

REFERENCES:
patent: 1690279 (1928-11-01), Craft
patent: 2334826 (1943-11-01), Lowe
patent: 3138792 (1964-06-01), Jenkins et al.
patent: 3148363 (1964-09-01), Gjerken

Affiliated with

Also associated with

Rating

Fluid flow detector for a fire alarm system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid flow detector for a fire alarm system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid flow detector for a fire alarm system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1818470