Moflash - Dome Colour Affects

Beacon Dome Colours

The intensity of the light can be greatly reduced as it passes through the dome of the beacon. The extent of this reduction is dependent upon:

The type of light source used i.e.. conventional filament (Incandescent) bulb, tungsten halogen bulb or a xenon tube
The colour of the beacon dome that is used.

The table below gives an indication of the percentage of light that will pass through the beacon dome for different light sources and dome colours.

COLOUR	FILAMENT	HALOGEN	XENON

Clear	100%	100%	100%

Amber	70%	70%	70%

Red	30%	27%	23%

Green	12%	15%	25%

Blue	8%	10%	13%

Different dome colours are used to convey different messages to the observer.

RED = serious danger act now!
AMBER = warning proceed with care
GREEN = ok proceed as normal
BLUE = specific process notice/warning

Alternatively Green colour beacons are used by Doctors and Veterinarians and Blue beacons for the Police and Fire departments.

IEC 73 - Colours of Luminous Indicators & Push Buttons

Establishes the various meanings of coloured luminous indicators and push buttons to conform to the machine directive.

Colour: RED

DANGER ACT NOW
Danger of live or unguarded
Moving machinery or essential
Equipment in protected zone

Colour: GREEN

SAFETY PRECAUTION: GO AHEAD
Checks complete the machine is about to start

Colour: CLEAR

NO SPECIFIC MEANING
Could confirm an earlier message

Colour: AMBER

WARNING: PROCEED WITH CARE
Temperature of pressure different from normal level

Colour: BLUE

SPECIFIC MEANING GIVEN DEPENDING ON
SITUATION
Pre-set ready or remote control

All Moflash coloured domes are manufactured from 'UV' stable polycarbonate plastic that will not tarnish, fade or become brittle over a period of time unlike many domes available that are produced from Acrylic plastic.