The productThere are many instances where aspirated smoke detectors are specified, but where the very high sensitivity of a laser detector is an unnecessary expense or even a nuisance due to false alarms. The FASD712 aspirated smoke detector provides the perfect solution in allowing the use of simple point detectors within an aspirated system. The FASD712 provides closed loop sampling on 2 channels whereby the exhausted air can be completely returned to the sampled area making it particularly suitable for prison cells. Installer friendlyThe system incorporates up to two analogue addressable or conventional point detectors completely separated from each other. The FASD712 incorporates in-line air filters to remove dust particles from the air sample. This is housed in a removable transparent cartridge enabling rapid inspection and maintenance. The system could be IP65 rated allowing its use in many harsh environments, and where regular hosing is performed. Reducing false alarmsThe aspirating smoke detector utilises a high performance aspirator and flow monitoring circuit. The flow level is displayed on a 10-element bar graph for each pipe, with adjustments for high and low flow thresholds. Flow failure is reported to the central panel as a device fault. |
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