Apollo Series 65 BR Rate of Rise Heat Detector. 75 degrees rate of rise detector.
The heat detector operates by using a matched pair of thermistors to sense heat. One thermistor is exposed to the ambient temperature, the other is sealed. In normal conditions, the two thermistors register similar temperatures, but, on the development of a fire, the temperature recorded by the exposed thermistor will increase rapidly, resulting in an imbalance of the thermistors and causing the detector to change to the alarm state.
The Apollo BR Heat Detector is designed to detect a fire as the temperature increases, but they also have a fixed upper limit at which the detector will go into alarm if the rate of temperature increase has been too slow to trigger the detector earlier.
Series 65 incorporates well-proven sensing technologies, together with advances in materials and electronics technology, including an IC based on that used in XP95 analogue addressable detectors. Having a wide operating voltage of 9-33V, the Series 65 detectors can be integrated into security systems, when used with a relay base.
Supply voltage: 9 to 33V
Average quiescent current at 24V: 40?A
Average quiescent current at 9V: 35?A
Alarm current at 24V: 52mA
Alarm current at 9V: 17mA
Alarm indication: Clear LED, Red in Alarm
Normal operating temperature: -20 to +60°C
(no condensation or icing)
Max wind continuous: Not affected
Remote output (R-) characteristics: Current sink to -ve line, limited to 17mA.
Note: when using a remote indicator a current-limiting series resistor may be required.