The waterflow detector is activated by which condition?

The waterflow detector is activated by which condition?

• A. Water Flow.
• B. Heat.
• C. Smoke.
• D. Pressure.

Answer: (A)

Water moving through the piping is what activates a waterflow detector. The detector contains a flow-sensing element (such as a paddle or impeller) that is moved by the moving water; this movement closes an electrical contact and signals the alarm. It isn’t triggered by heat, smoke, or static pressure. Heat may cause a sprinkler head to release water, which then creates flow that the detector senses, but the detector’s trigger is the actual water movement, not the heat or smoke itself.

Water moving through the piping is what activates a waterflow detector. The detector contains a flow-sensing element (such as a paddle or impeller) that is moved by the moving water; this movement closes an electrical contact and signals the alarm. It isn’t triggered by heat, smoke, or static pressure. Heat may cause a sprinkler head to release water, which then creates flow that the detector senses, but the detector’s trigger is the actual water movement, not the heat or smoke itself.