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What are HPS (High Pressure Sodium) Lamps?

April 26, 2017Lamps sodium

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What are HPS (High Pressure Sodium) Lamps?

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HPS lamps have do not have as high a CRI as MH lamps but they make up for this by having a higher lumen output and a longer life. The CRI (Colour Rendering Index) of HPS lamps is in the range of 25-28. So, at best a HPS lamp is 28% close to natural sunlight. The colour temperature is around 2700K. This means that the colour emitted is red- orange. This is more like the colour of the sky at around sunset.