Hochiki DRD-E - Manual (Page 6)

Page 6 of 12 DRD-E Flame Detector Installation Manual
2-3-0-1376/ISS1/NOV10
© 2010 Hochiki Europe (UK) Ltd
2 Application
Flame detectors are used when detection is required to be:
Unaffected by convection currents, draughts or wind
Tolerant of fumes, vapours, dust and mist
Fast reacting
2.1 Detectable Fire Sources
Liquids - Aviation Fuels (kerosene), Ethanol, Methylated Spirits, n-Heptane, Paraffin, Petrol (gasoline)
Solids – Coal, Cotton, Grain & Feeds, Paper, Refuse Wood
Gases – Butane, Natural Gas, Off Gas, Propane
2.2 Typical Applications
Coal handling plant
Aircraft hangars
Atria
Automotive industry - spray booths, parts manufacture
Paper manufacture
Pharmaceutical
Engine rooms
Generator rooms
Metal fabrication
Waste handling
Woodworking
Power plants
Textiles
Transformer stations
Petrochemical
2.3 Applications and Locations to Avoid:
Ambient temperatures above 50°C
Dusty or steamy atmospheres
Atmospheres containing corrosive gases
Where condensation exists
In the vicinity of large IR sources – such as heaters, burners, flares
Close proximity to RF sources
Obstructions to field of view
Exposure to weather
Large amounts of flickering reflections
Direct sunlight or its reflected light by puddle, glass, or mirror surface of metal
Spot lighting directly on the detector optics