Menene "inci": Inci (") wani yanki ne na musamman na ƙayyadaddun bayanai na tsarin Amurka, kamar bututun ƙarfe, bawuloli, flanges, gwiwar hannu, famfo, tees, da sauransu, kamar ƙayyadaddun bayanai shine 10".
Incies (inci, wanda aka rage a matsayin in.) yana nufin babban yatsa a cikin Yaren mutanen Holland, kuma inci ɗaya shine tsawon babban yatsa. Tabbas, tsawon babban yatsan ɗan adam shima ya bambanta. A ƙarni na 14, Sarki Edward II ya fitar da "inci na doka na yau da kullun".
An tsara cewa tsawon manyan hatsi uku da aka zaɓa daga tsakiyar kunnen sha'ir kuma aka shirya a jere shine inci ɗaya.
Gabaɗaya 1″=2.54cm=25.4mm
Menene DN: DN wani yanki ne da aka saba amfani da shi a tsarin Sin da Turai. Hakanan tsari ne na gano bututu, bawuloli, flanges, kayan haɗin bututu da famfo, kamar DN250.
DN yana nufin diamita mara lamba na bututun (wanda kuma aka sani da diamita mara lamba), lura: wannan ba diamita ta waje ba ce ko diamita ta ciki, matsakaiciyar diamita ta waje ce da diamita ta ciki, wacce ake kira matsakaicin diamita ta ciki.
Menene Φ: Φ wani yanki ne na gabaɗaya, wanda ke nufin diamita na waje na bututu, gwiwar hannu, ƙarfe mai zagaye da sauran kayan aiki. Hakanan ana iya cewa diamita ne. Misali, Φ609.6mm yana nufin diamita na waje na 609.6mm.
Yanzu da muka gano abin da waɗannan raka'o'i uku ke wakilta, menene alaƙar da ke tsakaninsu?
Da farko dai, "Ma'anar "DN" kusan iri ɗaya ce da ta DN, a zahiri tana nufin diamita mara suna, wanda ke nuna girman wannan ƙayyadaddun bayanai, kuma Φ shine haɗa su biyun.
Misali: idan bututun ƙarfe DN600 ne, kuma bututun ƙarfe iri ɗaya an yi masa alama da inci, zai zama inci 24. Akwai wata alaƙa tsakanin su biyun?
Amsar ita ce eh! Inci na gaba ɗaya shine ninka lamba kai tsaye da 25, wanda yayi daidai da DN, kamar 1″*25=DN25 2″*25=50 4″*25=DN100 da sauransu.
Tabbas, akwai kuma wasu daban-daban, kamar 3″*25=75, an zagaye su zuwa DN80 mafi kusa, da kuma wasu inci masu semicolons ko maki na decimal, kamar 1/2″ 3/4″ 1-1/4″ 1-1/2″ 2-1 /2″ 3-1/2″, da sauransu, ba za a iya ƙididdige waɗannan kamar haka ba, amma lissafin kusan iri ɗaya ne, ainihin ƙimar da aka ƙayyade:
1/2″=DN15 3/4″=DN20 1-1/4″=DN32 1-1/2″=DN40 2-1/2″=DN65 3-1/2″=DN90
Lokacin Saƙo: Maris-10-2022
