Intelligent Smoke & Heat Detectors

The multisensor is basically an optical smoke detector and will therefore respond well to the smoke from smouldering fires. The detector also senses air temperature. This temperature sensitivity allows the multisensor to give a response to fast burning (flaming) fires, which is similar to that of an ionisation detector. The multisensor can therefore be used as an alternative to an ionisation detector. Where the environment is smoky or dirty under normal conditions, a heat detector may be more appropriate. It must be recognised, however, that any heat detector will respond only when the fire is well established and generating a high heat output. Unless otherwise specified, devices described in this guide are suitable for indoor use only. APPLICATION OF XP95 DETECTORS IONISATION OPTICAL MULTISENSOR HEAT Overheating/Thermal Combustion Poor Very Good Very Good Very Poor Smouldering/Glowing Combustion Moderate/ Good Good Good Very Poor Flaming Combustion Very Good Good Good Poor Flaming with High Heat Output Very Good Good Very Good Moderate/ Good Flaming - Clean Burning Poor Very Good Moderate/ Good Moderate/ Good

	Uses Apollo’s open, digital Protocol
	Addressed by the patented XPERT Card
	Electronics free base
	Alarm Flag for fast alarm reporting
	Alarm address for fast location of alarm
	Ease of installation
	Elegant design
	Approved by a number of approvals bodies worldwide

The XP95 range of intelligent fire detectors comprises ionisation and optical point smoke detectors, heat and multisensor detectors, a manual call point, an optical beam detector, a flame detector, sounders and interfaces to monitor and control external equipment.

The choice of detector from the XP95 range follows the well established principles of system design; that is, the optimum detector type will depend on the type of fire risk and fire load, and the type of environment in which the detector is sited.

For general use, smoke detectors are recommended since these give the highest level of protection. Smoke detectors from the XP95 range may be ionisation, optical or multisensor types. It is generally accepted that ionisation types have a high sensitivity to flaming fires whereas optical detectors have high sensitivity to smouldering fires. As a result of this, ionisation types are widely used for property protection, and optical types for life protection.

These general principles still apply to XP95 detectors, although the availability of a multisensor in the range offers more choice to the system designer.