Spectrex Flame Detectors
Planning and Installing Flame Detectors requires consideration of the nature of the fire, protected area,environmental conditions, detector capabilities & limitations and end user expectations. For example, is it easier to specify a detector which provides an alarm signal a few seconds earlier than another or a detector with superior immunity to false alarms.
Risk Definition
- Issues that need to be considered include:-
- Fuels that present a fire hazard
- Speed of Response
- Minimum fire size to be detected
- Sources of nuisance radiation
- Maximum detection distance required
- Environmental conditions
Proline provides a range of Internationally approved and tested detectors which cover a wide range of risks,applications and environmental demands.
20/20L
The Models 20/20L and 20/20LB (which includes built in test function)are designed to detect hydrocarbon based fuel fires as well as metal and inorganic fires. The UV/IR flame detector senses energy in the short wave section of both the ultra violet and infrared portions of the electomagnetic spectrum. The sensor band pass has been carefully selected to ensure the greatest degree of spectral matching to the radiant energy emissions of fire and the lowest degree of matching tonon-fire stimuli.
The UV sensor incorporates a special logic circuit that helps prevent false alarms casued by solar radiation. The IR sensor is sensitive to radiaition over the range of 2.5 to 3.0 microns. The signals from both sensors are analyzed for frequency, intensity and duration. Simultaneous matching of radiant energy in both the UV and IR sensors triggers an alarm signal.
20/20U
The Models 20/20U and 20/20UB (which includes built in test function) are UV sensors which have been carefully selected to ensure the greatest degree of spectral matching to the radiant energy emissions of fire. Flame is detected typically within 3 sec. for a 1ft.2 (0.1m2) pan gasoline fire. A unique Fast UV Flame Detector Model (20/20FU) detects within several milliseconds a saturated UV signal caused by an explosion or a large fire. The microprocessor design allows for unique field programmability making
these flame detectors easily adaptable to all environments, applications and requirements. These UV Flame Detector incorporate a special logic circuit that helps prevent false alarms caused by
solar radiation. Both U and UB models are self-contained optical flame detectors that function as stand-alone units directly connected to external devices such as alarm systems or automatic fire extinguishing systems. The UV detectors are particularly useful for detection of invisible flames fro fuels such as: Hydrogen, Hydrides, Ammonia, Silan and other inorganic fuels.
20/20I
The Triple IR (IR3) Optical Flame Detector (20/201) is a self contained, triple-spectrum flame detector. The optical sensors and filters have been carefully selected to ensure the greatest degree of spectral matching to the radiant energy emissions of fire and the lowest degree of matching to non-fire stimuli. Circuit design scans for oscillating IR rations (1 to 10 Hz) in the spectral bands ranging from 4.0 to 5.0 microns and uses programmable algorithms which check the ratio and correlation of data received by three sensors. The microprocessor design allows for unique field programmability not found in similar detectors making the 20.201 highly immune to false alarms.
The detector has applications in a wide range of industrial and commercial facilities where the threat of accidental fire involves hydrocarbon fuels, such as gasoline, kerosene, diesel fuel, aviation jet fuels like JP-4, JP-5, JP-8, hydraulic fluids, paints and solvents, hydrocarbon gases like ethylene and polyethylene, natural gas (LNG), town gas, liquefied petroleum gas (LPG), methane, ethane, propane etc.
For more detailed individual detector information sheets please contact us.
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