7 Heat Detector
7.1 Operating Principles:
The XP95 heat detectors have a common profile with ionisation and
optical smoke detectors but have a low air flow resistance case
made of self-extinguishing white polycarbonate.
The devices monitor heat by using a single thermistor network
which provides a voltage output proportional to the external air
temperature.
The standard heat detector will respond to increasing air
temperature in such a way that it is classified as an A2S device
providing 55 counts at 55°C. See figure 13.
A high temperature CS heat detector which can be installed in a typical ambient temperature of 55°C is
available. See figure 14. This device will give 55 counts at 90°C.
Figure 11 – Schematic Diagram – XP95 Heat Detector
Figure 12 – Sectional View – XP95 Heat Detector
To Next Page
Loading...
