Which symbol indicates a heat detector?

Which symbol indicates a heat detector?

• A. Heat detector
• B. Flame detector
• C. Strobe
• D. Smoke detector

Answer: (A)

In fire alarm plans, every device type is shown with a specific symbol so you can recognize its function at a glance. A heat detector is designed to sense a rise in temperature, not smoke or flame, so its symbol is distinct from others that indicate different sensing methods. The symbol that represents a heat detector is the one designated for heat sensing in the diagram. A flame detector symbol would depict a flame, signaling detection of flame radiation; a smoke detector symbol indicates smoke sensing; and a strobe is a notification device, not a detector, and is shown as a flashing light symbol. So the symbol labeled for heat detector is the correct one.

In fire alarm plans, every device type is shown with a specific symbol so you can recognize its function at a glance. A heat detector is designed to sense a rise in temperature, not smoke or flame, so its symbol is distinct from others that indicate different sensing methods. The symbol that represents a heat detector is the one designated for heat sensing in the diagram. A flame detector symbol would depict a flame, signaling detection of flame radiation; a smoke detector symbol indicates smoke sensing; and a strobe is a notification device, not a detector, and is shown as a flashing light symbol. So the symbol labeled for heat detector is the correct one.