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FirePro Generators
FirePro Generators
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FirePro Fire Extinguishing Aerosol Generators are of variable shapes and dimensions.
Thermal ignition cord
Typical Generator
The temperature sensitive cord used for the thermal activation of the generator is in part inserted through the thermal ignition port and is attached to the aerosol forming solid compound.
A typical generator is made up of a metallic casing containing the following three main components. -
aerosol forming solid compound activator coolant
FirePro
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Typical Fire Extinguishing Aerosol Generator Diagramme
The remaining cord is left exposed in the protected area where in the event of fire it springs into action when the temperature reaches a pre-determined level. When this occurs, thermal energy is transferred via the cord to the solid compound initiating its transformation into aerosol.
(Other components include mesh and other separators). Aerosol
Electrical activation On activation the solid compound is transformed into a rapidly expanding aerosol with particles only the size of a few microns (1 gramme of solid material generates 1 litre of aerosol).
The electrical wires used for the electrical activation of the generator are inserted through the electrical ignition port and are connected to the activator.
Egress chamber
These carry a certain electrical current to the activator to enable it to initiate the transformation of the solid compound.
The aerosol passes through the egress chamber and into the protected volume via the openings in the top cover.
Activator Heat element activated by electrical current
Egress pressure
Non-pyrotechnic natural mineral coolant
Non-pyrotechnic solid compound
The pressure required for the fast egress of the aerosol as a free jet flow from the generator is generated in the process of transformation from a solid compound state to aerosol.
The aerosol passes through the natural mineral coolant where much of its thermal energy is absorbed.
The solid aerosol forming compound is very stable. It does not contain pyrotechnic material such as nitrocellulose or nitro-guanidine.
It does not contain pyrotechnic substances. When the aerosol passes through, it does not melt and does not block the outlet with the danger of the generator exploding.
It is stable to temperature fluctuations and has a self ignition temperature of 300oC
OTHER CHARACTERISTICS OF THE DISCHARGED AEROSOL Electrical conductivity: Corrosiveness: Thermal Shock: Electrostatic charge: Condensation: Residue:
None up to 24,000 V None None None N/A Anhydrous particles
OTHER TECHNICAL CHARACTERISTICS Duration of discharge: from approx. 3+ seconds Duration of effectiveness: from 30 to 120 min Electrical activation: min. 6-36V D/C, 0,5-2A, 2-5sec. Max testing current: max. 5 mA Activation time: Immediate Storage temperature: from -55 0C to + 150 plus 0C Humidity: up to 98%
MODES OF ACTIVATION
Manually
Automatic and Autonomous System
- Activation can be effected manually through an electrical switch carrying the required electrical current to the activator.
Unit/s can be activated by the thermo-sensitive cord (independent from any electrical or pressure supply). Electrically Unit/s can be activated by electrical signal from conventional detection and activation systems.
- Activation can be effected manually by using a pulley system (marine use) or manually activated using an electrical switch. - Activation can be effected manually by pulling the ®
safety pin on the grenade type FirePro models.