Speaking of which, We have some chambers that have black ferrite and poor lighting. We're looking into LED lighting, but also are interested in covering the ferrite with a white film. I've seen this in other labs, but haven't found a vendor yet. Can anyone recommend one?
David Schaefer -----Original Message----- From: Ken Javor [mailto:[email protected]] Sent: Monday, February 04, 2013 12:39 PM To: [email protected] Subject: Re: [PSES] LED Chamber Lighting I saw an amazing display of LED shield room lightning. The LEDs (and more importantly) all the wiring, are totally outside the chamber. A light pipe penetrates the chamber ceiling at regular intervals through a stuffing tube (waveguide beyond cut off). It should be noted that this chamber has white absorber; this would not have worked with black ferrite tile or blue cones. At least it would have taken many more luminaries. Ken Javor Phone: (256) 650-5261 > From: "Kunde, Brian" <[email protected]> > Date: Mon, 4 Feb 2013 18:22:05 +0000 > To: "[email protected]" <[email protected]> > Conversation: LED Chamber Lighting > Subject: LED Chamber Lighting > > Has anyone tried out LED Lighting in EMC test chambers? If so, can you > share your experience, opinions, likes and dislikes, and cost? > > I have recently seen several ads for LED Light Fixtures and > replacement kits where a 100watt LED light can replace a 400 watt Metal > Halide bulb or fixture. > But I have some concerns: > > 1. Are LED as bright? > 2. The ETS-Lindgren datasheet claims "No RF Noise into the test chamber". > Seems too good to be true. Are these lights special for ETS or are > there over the counter LED fixtures that will work just as well? > 3. Cost? Are there generic lights that would work as well but be > cheaper? If I hold off a year or two do you think the price will drop > significantly? > 4. What other pros and cons are there? > > > We have eight metal halide light fixtures in our chamber. Currently we > have to replace the bulbs every two years because of rf emissions from > bulb arcing. We replace the ballasts at 10 years because of loud > buzzing. Though the metal halide bulbs are relatively inexpensive, we > have to rent a lift for several days to work on the lights. Plus the > cost of having the lights worked on every other year and our chamber > being down for a few days. LED lights have the potential of being > maintenance free for 15 years or more. In the long run it should save > us money. This might be something to put on my capital equipment list for > next year. > > I'm curious to hear any input you might have on this topic. > > Regards, > The Other Brian > > > ________________________________ > > LECO Corporation Notice: This communication may contain confidential > information intended for the named recipient(s) only. If you received > this by mistake, please destroy it and notify us of the error. Thank you. > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. To post a message to the list, send your > e-mail to <[email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities > site at http://product-compliance.oc.ieee.org/ can be used for > graphics (in well-used formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://listserv.ieee.org/request/user-guide.html > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <[email protected]> Mike Cantwell > <[email protected]> > > For policy questions, send mail to: > Jim Bacher: <[email protected]> > David Heald: <[email protected]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
