Yakachena Room Classifications

Cleanroominofanirwa kuzadzisa zviyero zveInternational Organisation of Standardization (ISO) kuitira kuti igovaniswa.Iyo ISO yakavambwa muna 1947 kuti ishandise zviyero zvepasirese zvezvinhu zvine hunyanzvi zvekutsvagisa kwesainzi uye maitiro ebhizinesi, senge basa remakemikari, zvinhu zvinoputika, uye zviridzwa zvinonzwisisika.Kunyange zvazvo sangano rakasikwa nokuzvidira, mitemo yakagadzwa yakagadza nheyo dzinokosha dzinoremekedzwa nemasangano pasi rose.Nhasi, iyo ISO ine pamusoro pe20,000 zviyero zvinogona kutaurwa nemakambani.

Muna 1960, Willis Whitfield akagadzira uye akagadzira imba yekutanga yakachena.Makamuri akachena akagadzirwa uye akagadzirirwa kuchengetedza maitiro avo uye zviri mukati kubva kune chero kunze kwezvakatipoteredza zvinhu.Vanhu vanoshandisa kamuri racho nezvinhu zvakaedzwa kana kuti kuvakwa mariri vangadzivisa imba yakachena kusvitsa mipimo yayo youtsanana.Kudzora kwakakosha kunodiwa kubvisa izvi zvinonetsa zvinhu zvakanyanya sezvinobvira.

Munhu ari kushandisa kamuri racho nezvinhu zvakaedzwa kana kuti zvakavakwa mumba macho zvingadzivisa imba yakachena kusvitsa mipimo yayo youtsanana.Kudzora kwakakosha kunodiwa kubvisa izvi zvinonetsa zvinhu zvakanyanya sezvinobvira.

MuUS Federal Standard 209 (A kusvika D), huwandu hwezvikamu zvakaenzana nehukuru kupfuura 0.5µm zvinoyerwa mucubic tsoka imwe yemhepo, uye kuverenga uku kunoshandiswa kurongedza imba yakachena.Iyi metric temu inotambirwawo mune yazvino vhezheni ye209E yeStandard.IUnited States inoshandisa chiyero chemubatanidzwa 209E mudzimba.Imwe yazvino chiyero ndeye TC 209 kubva kuInternational Standards Organisation.Mipimo yese iri miviri inoronga imba yakachena zvichienderana nehuwandu hwezvikamu zvinowanikwa mumhepo yerabhoritari.Iyo yakachena kamuri yekuisa zviyero FS 209E uye ISO 14644-1 inoda chaiyo particle count kuyerwa uye maverengero ekamuri yakachena kana nharaunda yakachena mazinga ehutsanana.MuUnited Kingdom, British Standard 5295 inoshandiswa kuisa kamuri yakachena.Iyi chiyero ichatsiviwa neBS EN ISO 14644-1.

chinhu se zero particle concentration.Wakajairika mukamuri mhepo inenge kirasi 1,000,000 kana ISO 9.

ISO 14644-1 Yakachena kamuri zviyero

BS 5295 Yakachena kamuri Mayero

Kupatsanurwa kwekamuri kwakachena kunoyera mwero wehutsanana nekuverenga ukuru uye huwandu hwezvikamu pacubic vhoriyamu yemhepo.Nhamba huru dzakaita se "kirasi 100" kana "kirasi 1000" dzinoreva FED_STD-209E, uye dzinoratidza huwandu hwezvikamu zvehukuru 0.5 µm kana yakakura inotenderwa pa cubic tsoka yemhepo.Iyo chiyero inobvumirawo kududzira, saka zvinokwanisika kutsanangura semuenzaniso "kirasi 2000."

Nhamba diki dzinoreva ISO 14644-1 mwero, iyo inotsanangura iyo decimal logarithm yehuwandu hwezvikamu 0.1 µm kana yakakura inotenderwa pa cubic mita yemhepo.Saka, semuenzaniso, ISO kirasi 5 yekuchenesa imba ine yakawanda 105 =100,000 level(zvikamu pa m³).

Ose ari maviri FS 209E uye ISO 14644-1 anofungidzira log-log hukama pakati pehukuru hwechikamu uye particle concentration.Nechikonzero ichocho, hapana chinhu chakadai se zero particle concentration.Wakajairika mukamuri mhepo inenge kirasi 1,000,000 kana ISO 9.