CFD, Continuous Fire Detection
Continuous Fire and Overheat Detection Systems for Industry (CFD)
Description:
The Fenwal Continuous Fire Detection System stands alone in its field with the unique ability to detect specific overheat conditions at any point along the entire length of its sensing element run without regard for rate of temperature rise or average ambient temperature.
This discrete sensing capability offers greater sensitivity and response than systems relying upon the “averaging” technique. Further, it is the only system with a single control having the capability of connecting elements set at a variety of temperatures to provide simultaneous coverage for different alarm points in the several areas being protected.
The discrete sensing element of the Fenwal Continuous Fire Detection System is a slender Inconel tube packed with thermally sensitive eutectic salt and a nickel wire center conductor. Lengths of these sensing elements are connected in series to a control unit. The elements may be of equal or varying length and of the same or different temperature settings.
The control unit, operating directly from the power source, impresses a small voltage on the sensing elements. When an overheat condition occurs at any point along the element length; the resistance of the eutectic salt within the sensing element drops sharply; causing current to flow between the outer sheath and the center conductor. This current flow is sensed by the control unit, which produces a signal to actuate the output relay.
When the fire has been extinguished or the critical temperature lowered, the Fenwal CFD System automatically returns to standby alert, ready to detect any subsequent fire or overheat condition.
The Fenwal CFD System maybe wired to employ a “loop” circuit. In this case, should an open circuit occur, the system will still signal fire or overheat. If multiple open circuits occur, only that section between breaks becomes inoperative.
- Multi.Temperature Protection
- Repeatable - Self Resetting
- Discrete Sensing
- Long length
- Moisture Resistance
- Variable Environment
- Flexibility
- Continuous Monitoring
Datasheet:
Manual:
Fire warning is a basic function:
Often early Detection of excessive high temperatures is most critical. Occasionally an early Detection of too high temperatures is most vital. Excessive heat, even without the presence of smoke, can be a potential hazard of fire or explosion. The prevention of a potential fire, caused by excessive heat, allows corrective action to avoid igniting flames. In conclusion – effective action can save lifes and protect high value buildings and assets. The system can be either used for single or redundant Heat Detection using 2 equal switching temperatures. It also can be using by programming 2 (or more) different switching temperatures. The flexible and highly effective system gives accurate data acquisition and warning of excessive high temperatures. Control Heat, alarm Overheat (OVHT), alarm fire Application References: Heating plants, Heating Rooms, Dryers, Exhaust systems, Wind power generators, Gasturbines, Industrial plants,Gas & Oil-industry, Enginerooms, Compressors, Chemical Plants, Energy-plants, Sauna & Wellness-facilities & many more.
Information for all PAF-Systems: The Heat Detectcion for special applications. It can add safety in Fire-/Explosion prevention. The System contains a LICO Alarmpanel, 1 or more HDL Heat Detectors LICO and optionally an ATEX-certified Power Supply.All units are Dust-, Humidity- and Temperature-safe,switching contacts hermetically sealed (IP67),Various rate compensated switching temperatures from60 – 385°Care available. (see catalogue DAF Detect-a-Fire, Fenwal)It ispossible with the LICO Alarm-panel to collect Overheat- & Fire-Information and to alarm the both individually. Options:Switch fully stainless steel, Ex-certified Low VoltagePower Supply, Industrial Server UPS.
Information for all CFD-Systems: CFD – Continuous Fire DetectionThe Heat Detection for special applications.It can add safety in Fire-/Explosion prevention.It is more a Fire Prevention system, but works equally as a Fire Alarm System. The CFD is designed especially for very high temperatures. The “heart” of the system is a special stainless-steel cable-stylesensing element, which will get conductive and “switch” to ALARM when reaching the nominal temperature, whereever at the cable.CFD can clear an overheating within seconds.
