The FIRERAY® Exd flameproof infrared optical beam smoke detector is ideally suited to the protection of large areas with potentially explosive atmospheres. It comprises of an infrared transmitter and a receiver, both of which are ATEX certified for use in group 2, hazardous areas. Together with a battery power supply, the unit can be connected to a zone of a conventional fire alarm control panel or interfaced with an analogue-addressable system via an addressable input module or a zone monitor module.
It has three selectable alarm threshold settings of 25%, 35% and 50% which can be selected to suit the environment; if the received infrared signal reduces to below the selected threshold and is present for approximately 10 seconds the fire relay is activated.
- Range of 10-100 metres
- Low current consumption
- Automatic self check drift compensation
- Ground level control unit
- Complies with BS5839 part 5