Lightening the load O

ld fashioned light bulbs consisted of a tungsten filament inside a

glass bulb filled with an inert gas such as argon or nitrogen. When a current was passed through

the filament it got very hot and gave off light. The tungsten filament would gradually evaporate over a period of time and eventually break.

PROBLEM The problem with these incandescent bulbs was that they emitted a lot of heat for the amount of light produced, the ratio typically being about 80 per cent heat for only 20 per cent light. As such, they were not energy efficient. Halogen bulbs are similar in design to the old fashioned light bulbs and, whilst they generally have a longer life span, they also generate a lot of heat which is

wasted energy. Fluorescent lights too are guilty when it comes to wasting energy. LED lighting, however, is directional -

delivering the maximum amount of light to exactly the right position. Traditional lighting manufacturers often quote total light output figures for their devices, irrespective of direction. In practice, much of the light in traditional units is wasted.

HLS27 Turck Banner has recently added to its comprehensive portfolio with the introduction of the HLS27, a range of LED strip lights for hazardous areas. The HLS27 is a 12–30 volt DC powered light, certified for gas and dust Division 2 locations. It utilises tough aluminium housings encased in a shatterproof, UV-stabilised,

models, the HLS27 is also available in single and dual colour models. With eight length options and 750

lumens per 30cm light output, the HLS27 easily replaces bulky, energy- hungry fixtures. In addition to the integral 50 per cent

dimming option, models with a variable dimming input are also available for customisation of light levels. The integral ITC-ER rated cable is

available in multiple lengths to allow for simple installation directly to the junction box without expensive conduit.

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The benefits of LED lighting in standard applications are well known and, in the world of hazardous area lighting, such benefits are perhaps even more desirable

polycarbonate shell. Water resistant to IP67 the HLS27 is ideal for harsh indoor and outdoor applications, such as cabinets, spray-booths and outdoor shelters. In addition to the classic cool white

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