Heat Detector

Description

A heat detector is a specialized fire alarm device designed to respond when the convected thermal energy of a fire increases the temperature of its internal sensitive element. Unlike smoke detectors, they are less prone to false alarms from dust, steam, or cooking fumes, making them ideal for kitchens, garages, and industrial workshops.

Core Types & Description

• Fixed Temperature: Triggers an alarm when a specific pre-set temperature is reached (typically 57°C to 59°Cfor standard units). These are most common and ideal for areas with rapid transient heat surges, like above an oven.
• Rate-of-Rise (ROR): Responds to a rapid increase in temperature, usually around 7°C to 8.3°C (12°F to 15°F) per minute. These can detect fast-spreading fires faster than fixed-point units but may not trigger for slow-smoldering fires.
• Combination: Combines both fixed temperature and rate-of-rise sensing for broader protection.
• Linear Heat Detection (LHD): Uses a heat-sensitive cable that detects fire at any point along its length. It is widely used in large industrial areas like tunnels or cable trays.

While specs vary by model (e.g., System sensor 6500 series or Panasonic 6295), typical parameters include: