Hi, Be careful of the hot light bulbs. I was witness to a "fire" when the foam tiles on the ceiling came loose and touched the hot flood lamps. The "fire" smoldered for a long time till the fire sprinklers activated. I also learned that normal sprinklers heads don't spray up. Because the sprinkler heads were mounted below the foam tiles, it just sprayed water onto the floor and not the foam. The fire department had to come in with hoses and put out the fire.
Also, don't forget to put sprinklers above the chamber. If the fire gets out of the chamber (say through the vent in the top) you want to put it out. You don't want the fire department to use their hoses to put it out. Ned Devine Entela, Inc. Program Manager III Phone 616 248 9671 Fax 616 574 9752 e-mail [email protected] -----Original Message----- From: Ken Javor [mailto:[email protected]] Sent: Friday, January 26, 2001 2:15 AM To: Price, Ed; '[email protected]'; [email protected] Subject: Re: Lights for 3-meter Chamber One caveat. If you are on a budget for a room, fluorescents can be very handy in that they don't add nearly to the heat load that needs to be removed like incandescents. You need enough incandescents to light the room sufficiently when the fluorescents are turned off during an RE test. ---------- >From: "Price, Ed" <[email protected]> >To: "'[email protected]'" <[email protected]>, [email protected] >Subject: RE: Lights for 3-meter Chamber >Date: Thu, Jan 25, 2001, 9:23 AM > > > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] > Sent: Wednesday, January 24, 2001 6:15 PM > To: [email protected] > Subject: Lights for 3-meter Chamber > > > > We are setting up a 3-meter chamber to do some pre-compliance measurements. > What are the best low emissions lights to purchase for this chamber. > Please be specific as to manufacturer and models. > > Thanks > > Joe Martin > Applied Biosystems > > > ------------------------------------------- > > The choice for internal chamber lighting is still simply incandescent bulbs. > Avoid anything that uses fluorescent lights, and also avoid any electronic > ballast or driver circuitry. > > Incandescent lamps within chambers have a reputation for burning out > quickly. This is because they are turned on and off so much (I turn mine off > whenever I close the chamber door), and also because the lights are operated > off of filtered power. When the lights are off, there is often very little > load on the output side of the room filters, causing a slight voltage rise. > Thus, the lights are turned on usually with a slightly high nominal voltage > condition. > > You can use expensive "traffic light" lamps, or you may find some industrial > bulbs rated for 130V or so. My position is ordinary light bulbs are cheap. I > just keep a case handy, and I bought one of those extension wands so that I > can change a bulb without even getting a ladder. > > I also installed a couple of 150W floodlights, so that I can switch them on > to help my digital camera's flash when I take pictures. (The anechoic wall > treatment really soaks up the available light; I usually force the camera up > the equivalent of two "f-stops", even with the floodlights.) > > Regards, > > Ed > > > Ed Price > [email protected] > Electromagnetic Compatibility Lab > Cubic Defense Systems > San Diego, CA. USA > 858-505-2780 (Voice) > 858-505-1583 (Fax) > Military & Avionics EMC Services Is Our Specialty > Shake-Bake-Shock - Metrology - Reliability Analysis > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: [email protected] > Michael Garretson: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected] ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
