FST AMFE (Automatic Miniature Fire Extinguisher)FST AMFE (Automatic Miniature Fire Extinguisher) reliably protects devices and equipment in industry, household and consumer electronics such as cabinets, home appliances, televisions, etc. against the dangers of fires. The AMFE detects and extinguishes a fire inside devices, preventing the spread of a fire.
Advantages at a glance:
• Easy to use
• Maintenance-free
• Easy to install (retrofittable)
• Variety of customer specific operating and releasing temperatures available
• No water being used (gas)
• Scalable
• Robust and shock tolerant
• 3MTM NOVECTM as extinguishing agent
• Usable in various applications (home, industry, automotive, etc.)
• Mechanical release; no electric power supply required
• Release mechanism: qualified in the automotive and sprinkler industry
THE CHALLENGE
Whether from washing machines, televisions or power supplies - fires in electrical devices are a continuously increasing serious threat. It is not only at home that damage caused by fires is increasing, there is also a significant risk of fire in industry, the automotive sector and in storing highly valued collections. The challenge is to automatically detect and extinguish fires in their early stages while using an independent energy supply. An independently functioning system is needed that can extinguish these fires reliably, quickly and easily at any time.
THE FUNCTION
Due to rising heat in a fire scenario the pressure inside the glass bulb increases. After the predetermined operating temperature of the heat sensitive glass bulb is reached, it bursts into small fragments and triggers a mechanism that releases the gas from the cylinder. The extinguishing medium is released through the holes in the outlet body and extinguishes the fire when it is still in an early stage. The quick operation and effective extinguishing of the fire prevents further spread and helps keep fire damage to a minimum.
S-AMFE - AMFE with sensor connections
The AMFE not only releases the extinguishing gas but also signals that it has. In installations where accessibility is limited, the AMFE can be connected to a monitoring system by two connectors which read a signal. Permanently controlling if the AMFE has been initiated (e.g. line control through a PLC or monitoring device) allows for precise knowledge about the status of whether and where a fire might have started in an otherwise hard to reach installation. The S-AMFE is rated for typical PLC signals of 24V/48V and 1000mA. The connectors are standardized (6,3mm blade terminals), but customisations are possible.
R-AMFE - AMFE which can additionally be triggered remotely
The R-AMFE works like a conventional AMFE, releasing the extinguishing gas when the thermobulb bursts after the activation temperature has een reached by heat (as in a sprinkler). Additionally, the R-AMFE can be remotely triggered by activating a current signal into the R-AMFE causing a fast and precise increase of the heat at the bulb, ultimately resulting in a burst of the thermobulb assembled and release of the extinguishing gas. R-AMFE can also work much faster than a traditional AMFE if controlled by a monitoring device which also reads e.g. smoke detector signals and, upon the early detection of smoke, initiates the signal to release the R-AMFE even before significant enough heat buildup. The applied current defines the time until the R-AMFE is initiated. As application requirements for the R-AMFE are customer specific, consulting the manufacturer is required to define electrical and mechanical details to guarantee reliable and sufficient operation.
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