Thermotech 302-AW-135 Rate Anticipation Heat Detector

The Thermotech 302-AW-135 rate-anticipation heat detectors operate within a controlled range of two to three degrees of their set points, regardless of the speed or rate of temperature rise. These detectors are available in either 135°F (57.2°C) or 194°F (90°C) ratings. The 302 Series are normally open devices design especially for fire detection and alarm systems.

In general, the Thermotech 302-AW-135 rate-anticipation heat detectors respond and activate the fire alarm immediately whenever the ambient temperature reaches the preset temperature setting. Under rapid heat rise conditions; the rate-anticipation feature enables the detector to respond one to three degrees ahead of the setting. At the same time, however, it does not respond to momentary temperature fluctuations below the selected protection level, thus eliminating false alarms. When the temperature drops back down below the protection level, the detector automatically resets itself.

Thermotech 302-AW-135 detector has a smooth ceiling UL rating of 50′ x 50′ (15.24 x 15.24 meters) and is the only type of heat detector having such a rating on both fixed temperature and rate anticipation.

Features / Specifications

• Immediate response: the 302 Series activate whenever ambient air temperature reaches a detector’s setting; eliminating the thermal time lag inherent in conventional heat detectors.
• Eliminates false alarms: the 302 Series do not respond to momentary temperature fluctuations below the selected temperature.
• Universal application: the 302 Series can be use in all areas for any type of occupancy
• Self-restoring.
• Hermetically sealed: shock-resistant, corrosion-resistant, and tamper-proof.