Fenwal AnaLASER High Sensitivity Smoke Detector

The AnaLASER® II High Sensitivity Smoke Detector consists of a laser particle counter detector head, a high efficiency fan module and a termination board. One AnaLASER II Detector, when connected to a pipe network designed using “SNIFF” Version 3 software, provides coverage for an area up to 20,000 sq. ft. The AnaLASER II Detector is available in two sensitivity ranges. The standard AnaLASER II Detector (with a dynamic sensitivity range of 0.00075% to 0.3%/ft.) is designed for early warning smoke detection applications such as telecommunications facilities, data processing facilities, museums and warehouses. For clean room applications where the environment must be virtually free of air particulate, Fenwal developed the Ultra™ AnaLASER II Detector that is five times more sensitive than a standard high sensitivity smoke detector.

The Ultra AnaLASER II Detector has a sensitivity range of 0.00015% to 0.03%/ft. The AnaLASER II Detector’s laser particle counter detects particles of combustion at levels of obscuration as low as 0.00015%/ft. This is sensitive enough to detect invisible products of combustion such as the out gassing of plasticizers from overheating PVC wire insulation and electrical components, or small changes in the ambient level of obscuration during the incipient stage of a fire. When a combustible material reaches it’s ignition temperature, the combustion becomes self-sustaining and is called a fire. At temperatures much below the ignition temperature, chemical reactions generate airborne particles. This is typically called the incipient stage of a fire and is followed by visible smoke, flame and finally an intense heat stage. Detection during the incipient stage allows time for corrective action, possibly preventing an escalation of the fire condition, and thus minimizing fire damage.