{"id":112785,"date":"2024-10-18T16:37:26","date_gmt":"2024-10-18T16:37:26","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ies-tm-21-2011\/"},"modified":"2024-10-24T22:06:01","modified_gmt":"2024-10-24T22:06:01","slug":"ies-tm-21-2011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ies\/ies-tm-21-2011\/","title":{"rendered":"IES TM 21 2011"},"content":{"rendered":"

This document recommends a method for projecting the lumen maintenance of LED light sources from the data obtained by the procedures found in IES document LM-80-08 Approved Method for Measuring Lumen Maintenance of LED Light Sources. LED light sources provide a very long usable life but light output gradually depreciates over time. TM-21-11 provides the method for determining when the<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nCover <\/td>\n<\/tr>\n
3<\/td>\nCopyright <\/td>\n<\/tr>\n
8<\/td>\nINTRODUCTION
1.0 SCOPE
2.0 NORMATIVE REFERENCES
3.0 DEFINITIONS
4.0 TEST DATA AND SAMPLE SIZE <\/td>\n<\/tr>\n
9<\/td>\n5.0 LUMEN MAINTENANCE LIFE PROJECTION <\/td>\n<\/tr>\n
10<\/td>\n6.0 TEMPERATURE DATA INTERPOLATION <\/td>\n<\/tr>\n
12<\/td>\n7.0 REPORT
ANNEX A – RATIONALE FOR THE RECOMMENDED DATA EXTRAPOLATION METHOD <\/td>\n<\/tr>\n
14<\/td>\nANNEX B – SAMPLE SIZE SELECTION FOR DATA EXTRAPOLATION <\/td>\n<\/tr>\n
15<\/td>\nANNEX C – LEAST SQUARES FORMULA
ANNEX D – LIMIT FOR DURATION OF PREDICTION <\/td>\n<\/tr>\n
17<\/td>\nANNEX E – DATA TEST SET FOR VALIDATION OF CALCULATION \u2013 EXAMPLES <\/td>\n<\/tr>\n
25<\/td>\nANNEX F – CONSIDERATION OFMANUFACTURER\u2019S PREDICTION MODEL <\/td>\n<\/tr>\n
26<\/td>\nANNEX G – ANALYSIS OF MATHEMATICAL MODELING AS A METHODOF PROJECTING LUMEN MAINTENANCE LIFE <\/td>\n<\/tr>\n
32<\/td>\nINFORMATIVE REFERENCES <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IES TM-21 Projecting Long Term Lumen Maintenance of LED Light Sources<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IES<\/b><\/a><\/td>\n2011<\/td>\n33<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":112786,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2665],"product_tag":[],"class_list":{"0":"post-112785","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ies","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/112785","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/112786"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=112785"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=112785"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=112785"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}