Filter by Fire:
- Temporary Wireless Fire System
- 4 Wire Conventional Alarm Systems
- 2 Wire Conventional Alarm Systems
- Analogue Addressable Systems
- Analogue Addressable Devices
- Beam Smoke Detection
- Analogue Addressable Wireless Devices
- Wireless Systems
- Aspirating Equipment
- Electronic Sounders & Bells
- Fire Accessories
- Maintenance Test Equipment
Find a stockist
Apollo 65 Heat DetectorsProduct Code: F/CHFF/A
All Apollo Series 65 detectors are sold complete with base
The rate-of-rise heat detectors operate 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, causing the detector to change into the alarm state. Rate-of-rise detectors are 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.
Fixed heat detectors are set to trigger into the alarm state at the preset temperature threshold.
- Technical Information
Detector Dimensions H 50mm x Dia 100mm inc base
|F/CHHF/A/65||Series 65 heat detector less base (head only)|
|F/CHHF/A/FLASH||Series 65 heat detector with flashing LED|