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LPS R47 If you're wondering how LPS would look behind a drop lens, well here you go. Here's a collage of my R47 running a 18w LPS, the top row was taken during startup and the bottom at full brightness. Keywords: Lit_Lighting

LPS R47

If you're wondering how LPS would look behind a drop lens, well here you go. Here's a collage of my R47 running a 18w LPS, the top row was taken during startup and the bottom at full brightness.

P1294664M.JPG PC274442.JPG LPS_R47_Med.JPG 100_2185.JPG P8172601.JPG
File information
Filename:LPS_R47_Med.JPG
Album name:joe_347V / HID Lamps
Keywords:Lit_Lighting
Company and Date Manufactured:Osram
Model Number:NA 18W
Wattage:18w
Lamp Type:Low Pressure Sodium
Filesize:278 KiB
Date added:Jan 02, 2012
Dimensions:1600 x 1200 pixels
Displayed:240 times
Color Space:sRGB
Contrast:0
DateTime Original:2012:01:02 18:26:29
Exposure Bias:-1 EV
Exposure Mode:1
Exposure Program:Program
Exposure Time:1/80 sec
FNumber:f/3.5
Flash:No Flash
Focal length:5 mm
ISO:100
Light Source:Unknown: 0
Make:Olympus Imaging Corp.
Max Aperture:f/3.5
Model:SP600UZ
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=10165
Favorites:Add to Favorites

Comment 1 to 12 of 12
Page: 1

gailgrove   [Jan 03, 2012 at 12:04 AM]
Cool! How did you set this up? Is the socket just stuck in there while the ballast is remote?
streetlight98   [Jan 03, 2012 at 12:25 AM]
Nice! What wattage HPS is this as bright as? I'd guess about as bright as a 35w HPS?
gailgrove   [Jan 03, 2012 at 12:38 AM]
Not even that much, a 18 watt LPS only produces about 1800 lumens, a 35 watt HPS puts out 2500.
streetlight98   [Jan 03, 2012 at 12:52 AM]
So it puts out the light of a ~16w HPS (if that existed) Razz Laughing
joe_347V   [Jan 03, 2012 at 01:05 AM]
Yeah,I just swapped the sockets and remote ballasted it, and I can see why low watt LPS isn't common the entire fixture draws 32 watts. Shocked
gailgrove   [Jan 03, 2012 at 01:07 AM]
Ouch! That's a pretty high ballast loss!
streetlight98   [Jan 03, 2012 at 02:20 AM]
I guess higher wattage LPS lights are more effcient. A 180w LPS gives 32000 lumens which is in between 250 and 310w HPS (29000 and 37000 lumens).
A_lights   [Jan 03, 2012 at 04:04 AM]
That left picture looks spectacular!
joe_347V   [Jan 03, 2012 at 04:12 AM]
Thanks Aaron!
icefoglights   [Jan 03, 2012 at 05:02 AM]
Cool photos!

LPS lamps are incredibly efficient. The ballasts, on the other hand, not so much.
MercuryVapor175   [Jan 03, 2012 at 10:53 PM]
A fluorescent ballast can also drive the 18, 35, 55,and 90w LPS tubes.
joe_347V   [Jan 03, 2012 at 11:04 PM]
You mean a electronic ballast, magnetic fluorescent ballasts usually don't work.

Comment 1 to 12 of 12
Page: 1
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