{"id":8911,"date":"2011-08-27T11:35:55","date_gmt":"2011-08-27T15:35:55","guid":{"rendered":"http:\/\/www.olino.org\/us\/?p=8911"},"modified":"2012-03-07T13:02:05","modified_gmt":"2012-03-07T18:02:05","slug":"endurance-test-5x-lemnis-pharox-iii-2","status":"publish","type":"post","link":"https:\/\/olino.org\/blog\/us\/articles\/2011\/08\/27\/endurance-test-5x-lemnis-pharox-iii-2\/","title":{"rendered":"Endurance test 5x Lemnis Pharox III"},"content":{"rendered":"

\"pharoxiii_end2009\"<\/a> Lemnis<\/a> has had measured 5 lamps of Pharox III in endurance test. This article gives the results.<\/p>\n

This lamp has been measured before<\/a> it went into life test.
\n<\/p>\n

Summary measurement data<\/h3>\n

The columns in the following table contain the averaged results of the 5 lamps before and after the life test of 6000 hours (to be exact, after 6750 hours).<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
parameter<\/th>\ninitial<\/th>\nafter endurance test<\/th>\nremarks<\/th>\n<\/tr>\n
Color temperature<\/td>\n3028 K<\/td>\n3053 K<\/td>\nNo significant change<\/td>\n<\/tr>\n
Illuminance Iv<\/sub>@25deg ambient temp<\/td>\n54.2 Cd<\/td>\n52.5 Cd<\/td>\nMeasurement values are all calculated to T_amb = 25 deg C (it appeared that the lamps showed a decrease of 1 % at 2 degrees increase).<\/td>\n<\/tr>\n
Beam angle<\/td>\n196 deg<\/td>\n199 deg<\/td>\n<\/td>\n<\/tr>\n
Power P<\/td>\n5.86 W<\/td>\n5.76 W<\/td>\nAbout 2 % decrease in the first part of the endurance test.<\/td>\n<\/tr>\n
Power Factor<\/a><\/td>\n0.51<\/td>\n0.53<\/td>\n<\/td>\n<\/tr>\n
Luminous flux @ 25deg ambient temp.<\/td>\n380.4 lm<\/td>\n380.9 lm<\/td>\n<\/td>\n<\/tr>\n
Luminous efficacy<\/td>\n64.9 lm\/W<\/td>\n66.2 lm\/W<\/td>\n<\/td>\n<\/tr>\n
CRI_Ra<\/td>\n85.6<\/td>\n86.4<\/td>\n<\/td>\n<\/tr>\n
Coordinates chromaticity diagram<\/td>\nx=0.4413 and y=0.4163<\/td>\nx=0.4359 and y=0.4085<\/td>\n<\/td>\n<\/tr>\n
Measurement report (PDF)<\/td>\n\"olino-pdf\"<\/a><\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Test duration and test environment<\/h3>\n

The start was in Juan 2011 and the test lasted until Nov 2010.<\/p>\n

During this time the lamps have seen the following temperatures and humidity.<\/p>\n

\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a><\/p>\n

Priode of 2010<\/em><\/p>\n

The ambient temperature varied between 9 – 37 degres C and the relative humidity between 25 – 72 %.<\/p>\n

Change of lamp parameters<\/h3>\n

In this chapter two graphs showing the change of parameters (illuminance and chromaticity coordinates).<\/p>\n

\"\"<\/a><\/p>\n

The change of lamp parameters during the life time test (all are avrages of the 5 lamps).<\/em><\/p>\n

See the explanation article on OliNo<\/a> for more explanation about the test (setup).<\/p>\n

There is little deviation and change.<\/p>\n

Herewith the results of the single lamps separately.<\/p>\n

\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a><\/p>\n

The changes of parameters of each lamp separately.<\/em><\/p>\n

An extrapolation done towards 70 % of the illuminance is done. The illuminance is taken as a reference for the luminous flux (given that the beam angle has not changes significantly during the lifetime).<\/p>\n

\"\"<\/a><\/p>\n

Extrapolation of the averaged illuminance.
\n<\/em><\/p>\n

Iv is calculated to its value at T-amb of 25 deg C (the intensity decreases 1 % at 2 deg C increase). See the explanation article of the endurance test<\/a> for more explanation and link towards a document explaining the background of the extrapolation.<\/p>\n

The result is 80.000 hours before the 70 % level is reached.<\/p>\n

Herewith the results of the single lamps separately.<\/p>\n

\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a><\/p>\n

The changes of parameters of each lamp separately.<\/em><\/p>\n

There is some variation in the speed of decrease however all lamps have a significant lifetime.<\/p>\n

Color variation<\/h3>\n

The variation in color point (chromaticity coordinates) is measured. Herewith the results of each lamp.<\/p>\n

\"\"<\/a><\/p>\n

Change of color point of lamp 1.<\/em><\/p>\n

\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a>
\n<\/em><\/p>\n

Change of color points of lamps 2, 3, 4 and 5.
\n<\/em><\/p>\n

The color coordinates in the centre of the ellips are the points after 1000 hours of burning. All measurement points fall within the ellips that represents the 4 step McAdams ellips.<\/p>\n","protected":false},"excerpt":{"rendered":"

Lemnis has had measured 5 lamps of Pharox III in endurance test. This article gives the results. This lamp has been measured before it went into life test.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[32],"tags":[],"_links":{"self":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts\/8911"}],"collection":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/comments?post=8911"}],"version-history":[{"count":9,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts\/8911\/revisions"}],"predecessor-version":[{"id":8913,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts\/8911\/revisions\/8913"}],"wp:attachment":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/media?parent=8911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/categories?post=8911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/tags?post=8911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}