The Orbis IS Heat Detector monitors temperature by using a single thermistor network which provides a voltage output proportional to the external air temperature. The Orbis IS range incorporates seven heat detector classes to suit a wide range of operating conditions. The environmental performance is similar to that of the Orbis I.S. optical smoke detector but it should be noted that heat detectors are designed to work at particular ambient temperatures. The detector must be protected from conditions of condensation or icing.

• · Applications Dusty environments Hazardous areas Offshore platforms Refineries Small to medium buildings
• · Can be used for applications where smoke detectors are unsuitable
• · Ideal for environments that are dirty or smoky under normal conditions
• · Reduced incidences of false alarms
• · Increased reliability of detection
• · Flashing LED option
• · False alarm reduction
• · DirtAlert indicates limit of drift compensation
• · Operating Temperature -40 to 70C
• · IP23D