The Orbis IS Heat Detector monitors temperature by using a single thermistor network which provides a voltage output proportional to the external air temperature. There are seven classes of heat detectors in the Orbis IS range designed to suit a wide variety of operating conditions.
Environmental Characteristics
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. Also classification and BASEEFA certificate number are the same as for the optical smoke detector. Operating and storage temperature: –40°C to +70°C Operating temperature is restricted by the intrinsic safety gas classification. Class T5: –40°C to +45°C Class T4: –40°C to +60°C The detector must be protected from conditions of condensation or icing.
