Final answer:
A water flow detector is a device that triggers an alarm when significant water movement is detected in a fire sprinkler system, alerting occupants and emergency services of a possible fire.
Step-by-step explanation:
A water flow detector is a device which initiates an alarm indicating a flow of water throughout the fire protection system. These devices, commonly found in commercial and industrial buildings, are crucial components of a fire sprinkler system.
When a significant flow of water is detected in the system, such as when a sprinkler head is activated due to heat from a fire, the flow detector sends a signal to the central alarm panel, which in turn triggers an audible and/or visual alarm. This alerts the building's occupants and often the local fire department of the potential fire.A water flow detector is a device that triggers an alarm when significant water movement is detected in a fire sprinkler system, alerting occupants and emergency services of a possible fire.