The lighting used to illuminate the interiors of process vessels has been dominated by halogen luminaires for decades. In recent years brighter LED luminaires have emerged that are causing process experts to re-assess their vessel lighting needs.
What is the ideal level of brightness? What is the relationship between brightness and the size of the vessel? How should brightness be measured?
The International Society for Pharmaceutical Engineering’s Bioprocessing Equipment (ISPE-BPE) subcommittee is looking at these questions in the hope that someday guidance may be offered. In the meantime, this article may shed a little light on the subject.
The traditional halogen luminaire emerged from industry suppliers based on the technology that was available. Halogen luminaires were brighter than other incandescent luminaires, and they could be used in explosion-proof enclosures. A 50W bulb was about the right size for the application. Higher wattage bulbs were available, but they required bulky enclosures to remove the heat.
To continue reading this white paper by Mathew Hildner and Aarash Navabi, CPIP, of L.J. Star, Inc., please click here.
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