Apollo Orbis I.S. A1R Heat Detector (ORB-HT-51145-APO)

The Apollo Orbis I.S. A1R Heat Detector (ORB-HT-51145-APO) provides reliable heat detection for hazardous environments where smoke detectors may not be suitable. Using a single thermistor network, it monitors the surrounding air temperature and responds to both fixed temperature levels and rapid rises in temperature, helping to provide early warning of developing fires.

Designed for use in intrinsically safe fire alarm systems, the ORB-HT-51145-APO performs well in environments where dust, smoke, steam, or airborne contaminants are present during normal operation. By responding to heat rather than smoke particles, it helps reduce false alarms while keeping reliable fire detection.

Advanced Orbis technology improves detection reliability and helps reduce false alarms, making it well suited to demanding industrial and hazardous applications.

Key Features

• Intrinsically safe A1R rate-of-rise heat detector
• Single thermistor heat sensing technology
• Responds to rapid temperature increases
• Suitable where smoke detectors are unsuitable
• Ideal for dusty or smoky environments
• Reduced false alarm incidence
• Increased detection reliability
• Optional flashing LED version available
• Designed for hazardous areas
• Reliable operation in harsh environments
• Compatible with Apollo Orbis intrinsically safe systems

Typical Applications

The Apollo ORB-HT-51145-APO is suitable for:

• Dusty environments
• Hazardous areas
• Offshore platforms
• Refineries
• Small to medium-sized buildings
• Process plants
• Industrial facilities
• Areas where smoke detection may cause unwanted alarms