{"id":3426,"date":"2018-04-12T20:38:25","date_gmt":"2018-04-12T19:38:25","guid":{"rendered":"http:\/\/www.crowave.com\/blog\/?p=3426"},"modified":"2018-04-12T20:38:25","modified_gmt":"2018-04-12T19:38:25","slug":"fotometar-dr-lange-lp300-typ-lpg-121","status":"publish","type":"post","link":"https:\/\/www.crowave.com\/blog\/2018\/04\/12\/fotometar-dr-lange-lp300-typ-lpg-121\/","title":{"rendered":"Fotometar Dr. Lange LP300 Typ LPG 121"},"content":{"rendered":"<p>Danas je nabavljen fotometar njema\u010dkog proizvo\u0111a\u010da Dr. Bruno Lange GmbH pod oznakom LP300 Typ LPG 121. Tvrtku Dr. Bruno Lange GmbH osnovao je njema\u010dki fizi\u010dar Bruno Lange 1933. godine i opstala je do 1998. godine. Tvrtka je zapo\u010dela rad proizvodnjom selenskih fotonaponskih \u0107elija i svjetlomjera baziranima na istima. Jedan takav primjerak opisali smo u objavi <a href=\"http:\/\/www.crowave.com\/blog\/2017\/04\/02\/luxmeter-dr-bruno-lange\/\" target=\"_blank\">LUXMETER Dr. Bruno Lange<\/a>. Od 1960-ih godina tvrtka Dr. Bruno Lange GmbH orijentira se na proizvodnju fotometara za upotrebu u medicinskim laboratorijima, a od 1970-ih godina pro\u0161iruje proizvodnju fotometara i za druge upotrebe kao \u0161to su mjerenja industrijskih, komunalnih i otpadnih voda. Jedan takav fotometar ve\u0107 smo opisali u objavi <a href=\"http:\/\/www.crowave.com\/blog\/2016\/03\/13\/lange-photometer-lp3\/\" target=\"_blank\">LANGE PHOTOMETER LP3<\/a>. U istoj objavi ukratko je opisano \u010demu slu\u017ee i na kojem principu rade fotometri.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_01.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3427\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_01-1024x611.jpg\" alt=\"fotometar_lange_lp300_lpg121_01\" width=\"1024\" height=\"611\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_01-1024x611.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_01-300x179.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_01-768x458.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_05.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3431\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_05-1024x328.jpg\" alt=\"fotometar_lange_lp300_lpg121_05\" width=\"1024\" height=\"328\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_05-1024x328.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_05-300x96.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_05-768x246.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_06.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3432\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_06-1024x180.jpg\" alt=\"fotometar_lange_lp300_lpg121_06\" width=\"1024\" height=\"180\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_06-1024x180.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_06-300x53.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_06-768x135.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_06.jpg 1972w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Vidimo da ovaj primjerak fotometra, za razliku od <a href=\"http:\/\/www.crowave.com\/blog\/2016\/03\/13\/lange-photometer-lp3\/\" target=\"_blank\">LANGE PHOTOMETER LP3<\/a>, ima digitalni prikaz vrijednosti, a po funkcijskim tipkama mo\u017ee se zaklju\u010diti da ima mogu\u0107nost i njihovog izravnog prera\u010dunavanja te memoriranja.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_03.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3429\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_03-1024x492.jpg\" alt=\"fotometar_lange_lp300_lpg121_03\" width=\"1024\" height=\"492\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_03-1024x492.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_03-300x144.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_03-768x369.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Na gornjoj strani nalazi se otvor koji omogu\u0107ava pristup \u017earulji fotometra, a desno je otvor za umetanje kivete sa ispitnim uzorkom i otvor za umetenje \u017eeljenog filtra svjetlosti.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_04.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3430\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_04-1024x619.jpg\" alt=\"fotometar_lange_lp300_lpg121_04\" width=\"1024\" height=\"619\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_04-1024x619.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_04-300x181.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_04-768x465.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Svjetlost vidljiva ljudskom oku ima valnu duljinu od 380 do 780 nm, a mi kod na\u0161eg fotometra nalazimo pet filtara unutar toga raspona koji odgovaraju odre\u0111enim bojama svjetlosti.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_02.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3428\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_02-1024x768.jpg\" alt=\"fotometar_lange_lp300_lpg121_02\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_02-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_02-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_02-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_07.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3433\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_07-1024x307.jpg\" alt=\"fotometar_lange_lp300_lpg121_07\" width=\"1024\" height=\"307\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_07-1024x307.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_07-300x90.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_07-768x230.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_07-1170x350.jpg 1170w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_08.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3434\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_08-1024x297.jpg\" alt=\"fotometar_lange_lp300_lpg121_08\" width=\"1024\" height=\"297\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_08-1024x297.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_08-300x87.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_08-768x223.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>U unutra\u0161njosti se odmah prepoznaju osnovne komponente fotometra:<\/p>\n<ul>\n<li>mre\u017ena sklopka, mre\u017eni filtar (RSO) i mre\u017eni transformator koji osigurava napajanje \u017earulje i elektronike<\/li>\n<li>fotometarski blok koji \u010dini \u017earulja, opti\u010dke le\u0107e, komore za umetanje kivete i filtara, te fotodioda kao senzor svjetlosti na kraju lanca<\/li>\n<li>plo\u010dica sa ispravlja\u010dem, stabilizatorom i regulatorom za napajanje \u017earulje<\/li>\n<li>plo\u010dica sa ispravlja\u010dem i stabilizatorom za napajanje elektronike, na istoj plo\u010dici nalazi se elektronika (poja\u010dala) senzora (fotodiode) i elementi za kalibraciju<\/li>\n<li>plo\u010dica sa mikroprocesorom, memorijama i logi\u010dkim sklopovima fotometra<\/li>\n<li>plo\u010dica sa logi\u010dkim sklopovima tipkovnice i upravlja\u010dkim elementima za LED pokaziva\u010de<\/li>\n<\/ul>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_09.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3435\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_09-1024x840.jpg\" alt=\"fotometar_lange_lp300_lpg121_09\" width=\"1024\" height=\"840\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_09-1024x840.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_09-300x246.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_09-768x630.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Na slici dolje uo\u010davaju se cijevi na koje se izvana mo\u017ee priklju\u010diti cirkuliranje teku\u0107ine za odr\u017eavanje stalne temperature mjerenog uzorka, ukoliko su svojstva istog ovisna o temperaturi. Fotodioda je na samom bloku spojena na plo\u010dicu sa naponskim komparatorima (LM339N) kao prvim stupnjem obrade elektri\u010dnog signala koji daje fotoelektri\u010dni senzor.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_10.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3436\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_10-1024x722.jpg\" alt=\"fotometar_lange_lp300_lpg121_10\" width=\"1024\" height=\"722\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_10-1024x722.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_10-300x212.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_10-768x542.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Pogled s gornje strane na fotometarski blok sa izva\u0111enom halogenom \u017earuljom.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_11.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3437\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_11-1024x768.jpg\" alt=\"fotometar_lange_lp300_lpg121_11\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_11-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_11-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_11-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Lijevo je plo\u010dica sa ispravlja\u010dem i stabilizatorom za napajanje elektronike, te sa elementima senzorskog poja\u010dala i elementima za kalibraciju istog. Desno je plo\u010dica sa ispravlja\u010dem, stabilizatorom i regulatorom za napajanje \u017earulje.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_12.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3438\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_12-1024x700.jpg\" alt=\"fotometar_lange_lp300_lpg121_12\" width=\"1024\" height=\"700\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_12-1024x700.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_12-300x205.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_12-768x525.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Plo\u010dica halogene \u017earulje fotometra&#8230;<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_13.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3439\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_13-1024x619.jpg\" alt=\"fotometar_lange_lp300_lpg121_13\" width=\"1024\" height=\"619\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_13-1024x619.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_13-300x181.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_13-768x464.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_13.jpg 1960w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Plo\u010dica napajanja halogene \u017earulje fotometra&#8230;<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_18.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3444\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_18-1024x768.jpg\" alt=\"fotometar_lange_lp300_lpg121_18\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_18-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_18-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_18-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_19.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3445\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_19-1024x528.jpg\" alt=\"fotometar_lange_lp300_lpg121_19\" width=\"1024\" height=\"528\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_19-1024x528.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_19-300x155.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_19-768x396.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Plo\u010dica sa ispravlja\u010dem i stabilizatorom za napajanje elektronike, te sa elementima senzorskog poja\u010dala i elementima za kalibraciju istog.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_20.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3446\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_20-1024x768.jpg\" alt=\"fotometar_lange_lp300_lpg121_20\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_20-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_20-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_20-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_21.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3447\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_21-1024x768.jpg\" alt=\"fotometar_lange_lp300_lpg121_21\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_21-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_21-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_21-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Plo\u010dica sa mikroprocesorom, memorijama i logi\u010dkim sklopovima fotometra.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_14.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3440\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_14-1024x398.jpg\" alt=\"fotometar_lange_lp300_lpg121_14\" width=\"1024\" height=\"398\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_14-1024x398.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_14-300x116.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_14-768x298.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>INS8060N je 8-bitni mikroprocesor koji je tvrtka National Semiconductor stavila na tr\u017ei\u0161te krajem 1970-tih godina. Kod na\u0161eg fotometra mikroprocesor radi na taktu od 2 MHz, a maksimalni takt na kojem mo\u017ee raditi je 4 MHz. Desno od mikroprocesora su logi\u010dki digitalni integrirani krugovi.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3441\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_15-951x1024.jpg\" alt=\"fotometar_lange_lp300_lpg121_15\" width=\"951\" height=\"1024\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_15-951x1024.jpg 951w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_15-279x300.jpg 279w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_15-768x827.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_15.jpg 1941w\" sizes=\"auto, (max-width: 951px) 100vw, 951px\" \/><\/p>\n<p>M5L2732K je ROM memorija, to\u010dnije PEEPROM (Parallel Electrically-Erasable Programmable Read Only Memory) kapaciteta 32K (4K x 8). Proizvo\u0111a\u010d je Mitsubishi, a ovaj \u010dip ugra\u0111ivao se i u dobri stari Commodore C64.<\/p>\n<p>AM9112APC stati\u010dka RAM memorija, dakle SRAM (Static Random Access Memory) \u00a0kapaciteta 1024 bita (256b x 4) iz sredine 1980-tih godina. Karakteristika ovog tipa memorije je da \u010duva spremljene podatke sve dok integrirani krug ima napajanje.<\/p>\n<p>Mikroprocesor sa vanjskim memorijama uklju\u010duju\u0107i i EEPROM ve\u0107 smo susreli i opisali u objavi <a href=\"http:\/\/www.crowave.com\/blog\/2017\/03\/25\/taksimetar-txnl-90-i-hale-mct-1\/\" target=\"_blank\">TAKSIMETAR TXNL-90 I HALE MCT-1<\/a>.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_16.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3442\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_16-1024x856.jpg\" alt=\"fotometar_lange_lp300_lpg121_16\" width=\"1024\" height=\"856\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_16-1024x856.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_16-300x251.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_16-768x642.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Na kraju evo i plo\u010dice sa logi\u010dkim sklopovima tipkovnice i upravlja\u010dkim elementima za LED pokaziva\u010de. Fotometar LP300 ima dva LED pokaziva\u010da, svaki sa \u010detiri prikaza broja, slova ili znaka. Tako\u0111er, tu su prikazi razli\u010ditih mjernih jedinica.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_17.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3443\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_17-1024x733.jpg\" alt=\"fotometar_lange_lp300_lpg121_17\" width=\"1024\" height=\"733\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_17-1024x733.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_17-300x215.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_17-768x550.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_22.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3448\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_22.jpg\" alt=\"fotometar_lange_lp300_lpg121_22\" width=\"811\" height=\"787\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_22.jpg 811w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_22-300x291.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_22-768x745.jpg 768w\" sizes=\"auto, (max-width: 811px) 100vw, 811px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_23.jpg\" rel=\"lightbox[3426]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-3449\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_23-1024x924.jpg\" alt=\"fotometar_lange_lp300_lpg121_23\" width=\"1024\" height=\"924\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_23-1024x924.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_23-300x271.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_23-768x693.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_23.jpg 1072w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Ovaj na\u0161 primjerak fotometra LP300 je vjerojatno ispravan (barem elektroni\u010dki), no svakako bi nam dobro do\u0161lo uputstvo za upotrebu kao i malo znanja iz kemije kako bi mogli to i prakti\u010dno provjeriti. Jedina primjena u elektroni\u010darskoj radionici koja mi pada na pamet bila bi mjerenje koncentracije otopina za izradu tiskanih plo\u010dica. Tu tako\u0111er mo\u017ee poslu\u017eiti i pH metar. No, koju god kemiju koristili (NaOH za razvijanje, HCl + H2O2 za jetkanje) sre\u0107a na\u0161a, pa se dobri rezultati posti\u017eu u \u0161irokom rasponu koncentracija pa su onda i odokativne metode sasvim zadovoljavaju\u0107e u tom na\u0161em kemijskom dijelu posla. A opet s druge strane, za\u0161to ovakve stvari prepu\u0161tati slu\u010daju, kad nam eto na polici besposleno stoji ve\u0107 nekoliko razli\u010ditih fotometara i pH metara svi odreda \u017eeljni nekih novih izazova koje su im nakon kemi\u010dara jo\u0161 samo elektroni\u010dari spremni prirediti \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Danas je nabavljen fotometar njema\u010dkog proizvo\u0111a\u010da Dr. Bruno Lange GmbH pod oznakom LP300 Typ LPG 121. Tvrtku Dr. Bruno Lange GmbH osnovao je njema\u010dki fizi\u010dar Bruno Lange 1933. godine i opstala je do 1998. godine. Tvrtka je zapo\u010dela rad proizvodnjom selenskih fotonaponskih \u0107elija i svjetlomjera baziranima na istima. Jedan takav primjerak opisali smo u objavi [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3435,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,15],"tags":[],"class_list":{"0":"post-3426","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-labnaprave","8":"category-mjerni","9":"czr-hentry"},"jetpack_featured_media_url":"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2018\/04\/fotometar_lange_lp300_lpg121_09.jpg","_links":{"self":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/3426","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/comments?post=3426"}],"version-history":[{"count":2,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/3426\/revisions"}],"predecessor-version":[{"id":4739,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/3426\/revisions\/4739"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/media\/3435"}],"wp:attachment":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/media?parent=3426"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/categories?post=3426"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/tags?post=3426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}