The Rafiki Multipoint Detector is a multi-criteria detector, micro-processor control and integral sounder.The ‘Multipoint’ detector has set new standards in detector technology, using microprocessor control even as a conventional detector and offering the installer a full range of detection capabilities with audible warning in one compact device. Specifiers and installers who choose the Multipoint detector, do so secure in the knowledge that the fire detection performance of the detector can be matched to the environment in which it is installed – and changed any time during the lifetime of the installation. The mode of detection required can be simply changed by configuring the DIL switch in the detector electronics module, or via the control panel/ PC on addressable detectors. All modes are compliant with European detector type specifications, and are suitable for use in installations compliant with BS5839: Part 1: 2002, Part 6 2004 when used in conjunction with the ‘Twinflex Plus’ system.
The Twinflex Intelligent conventional detector can be set to any one of the above modes as well as a Combined Mode (Smoke 2 & Heat 2) where a smoke or heat source can trigger a fire decision. This means that the end user is given optimum fire protection, even if the installer is unsure of the use of the particular area where the detector is sited. As part of the Twinflex system all Twinflex products including the Twinflex Multipoint detector feature an End of Line monitoring switch, which negates the need for End of Line resistors.
- The Rafiki Multipoint Detector also has the unique benefit of an optional full specification integral sounder. A 90dBA output can be achieved. The Twinflex Intelligent conventional detector can be set to 3 different sound patterns, as well as switched off, with 2 sound output levels.
- To ensure the detection capabilities of the Multipoint are never compromised it self-calibrates every 6 hours. It continuously monitors for dust contamination, until, over a period of time depending on the environment it reaches a point where the chamber becomes saturated. Before this can develop into a false alarm situation, the panel will indicate that a Multipoint needs attention.
- To make maintenance easy, the Multipoint features a disposable optical chamber. This means the chamber can be simply thrown away, and replaced economically when necessary.
Multipoint Modes of Detection
- Smoke 1 Used where ionisation detectors are normally fitted especially when there are high ceilings or a risk of free burning fires (chemical stores etc), or fires that need to be detected extremely quickly.
- Smoke 2 Used where optical detectors are normally fitted when there is a risk of a smouldering fire and for escape routes.
- Smoke 3 This setting is designed for use in areas that are prone to nuisance alarms. The reduced sensitivity linked with a time delay feature means that a higher concentration of smoke needs to be present for a constant time period, before a fire decision is made. This setting, for example, is ideal for hotel bedrooms with en-suite shower rooms, the end user can change the setting from smoke 2 to smoke 3 if nuisance alarms are becoming a problem – whilst still offering optimum protection of a smoke detection setting, especially if this is what has been specified.
- Heat 1 (Rate of Rise) Used where a standard rate of rise detector would normally be used.
- Heat 2 (Standard Fixed Temperature - 58ºC approx) Used where a standard fixed temperature heat detector would normally be fitted, suitable for kitchens, etc.
- Heat 3 (High Fixed Temperature - 90ºC approx) Used where a high fixed temperature heat detector would normally be fitted, suitable for boiler rooms, etc.
Read more about the generally accepted guidelines by Rafiki, Aico, and other Fire Alarms manufacturers, (they are also commonly accepted for all the domestic, commercial and industrial properties in UK); the Rafiki advices for Fire Alarms, some of the guidelines provided by Rafiki(intelligent fire technology) – check out the Rafiki series of industrial/commercial fire alarm systems (like the Rafiki Twinflex), found at The Conventional and Analogue Fire Alarms. For more details about the fire alarms, visit the Fire-Detect website(see a list of articles about the fire alarms here and here).