Notes

• A light working 24/7 in a factory runs for 8,760 hours per year.
• Mean lumens and mean pupil lumens is defined as the number of lumens produced at 40 to 50 percent of rated lamp life.
• LightingRetroFit tables are based on matching as closely as possible, the Plm/w, between Metal Halide globes and Induction globes when the Metal Halide globe is in its 'mean lumen' range. This figure is calculated using the S/P ratio formula (refer to our industry information pages). We consider this to be the emerging international standard in lighting design.
• High quality Metal Halide globes can be rated as high as 20,000 hours (5 changes per Induction globe life). Lesser quality, cheaper globes may be rated as low as 8,000 hours (12 changes per Induction globe life). Download and use our cost savings charts to quantify your long term re-lamping and maintenance costs and potential savings.
• When considering changes to facility lighting one should consider whether the existing lighting is adequate for the current use in different areas of the plant. Refitting with LightingRetrofit parts allows the client to increase, decrease or change the colour temperature (K) of their current lighting levels in line with their actual lighting requirements.
• The lighting maintenance level for induction lighting beyond 16,000 hours remains steady in a range from 90% depleting down to around 80% beyond 80,000 hours.
• A major Metal Halide globe producer describes 'economic life' as a better measure of globe performance as the lamp 'rated life' tests fail to take into account the lumen depreciation and colour shift that occurs as lamps age. They write that the 'economic life' of a Metal Halide lamp is between 60% & 75% of the rated life.
• Typically a new Metal Halide globe and ballast would cost from $60-120 depending on quality.