ORBIS heat detector A1R

The ORBIS heat detector is a conventional detector composed of a white, fire retardant polycarbonate housing.

The classification of the heat detectors in the European Standard EN54-5 is based on the maximum admissible temperature at which the detector can operate. The range of ORBIS heat detectors consists of 6 types: A1R, A2S, BR, BS, CR and CS. Heat detectors are used in applications where smoke detectors are unsuitable.

The ORBIS heat detector is equipped with a temperature sensor, which is permanently exposed to the ambient air. Every 2 seconds the sensor measures the ambient temperature. The built-in microprocessor stores the measured value and compares it with a fixed alarm threshold. The microprocessor also determines the rate of temperature rise using an algorithm.

The ORBIS rate-of-rise heat detectors A1R, BR and CR switch to the fire alarm condition in the event of an inadmissible rise in temperature and when a fixed alarm threshold is exceeded (50°C, 65°C and 80°C respectively).

The ORBIS static heat detectors A2S, BS and CS only switch to the alarm condition when a fixed alarm threshold is exceeded (50°C, 65°C and 80°C respectively).

The TimeSaver base is designed for fast installation and allows the cabling to be checked without the presence of a detector. During commissioning, StartUp signals the correct connection and operation of the detector by means of a red flashing LED.