Units Pressure

te taata mo te wa tuatahi fehangahangai ki te raruraru o te ine i te pēhanga i roto i te hanga o puna i roto i Florence. Waimarie hoki kaihanga i roto i ora ahupūngao Torricelli, e oho te raruraru i te pae hanganga i roto i tona taiwhanga, whakakapi i te wai ki te konuoi mo ake wheako kiato.

mahue History kua taunakitanga o te āhua o te whakatuwheratanga o te ahupūngao Itari awhinatia nga kaihanga, engari te meka e kua riro te taata tohu o te oraraa o te pēhanga kōhauhau, he te whakakorekore.

tangohia Torricelli tukapaku ake he nui Blez Paskal, ko wai i taea ki te ine i te pēhanga kōhauhau me te ki te whakamatau empirically e tei te reira i runga i te wahi tiketike i runga ake te taumata moana. Ko te kupu, he mea whakahua te wae pēhanga tuatahi HG teitei whanganga i roto i inihi me nga tuke. Tino fakanatula, nga wae hou o te pēhanga inenga e ingoa i muri i te pūtaiao e rua.

Hoki ine tono te pēhanga ngā mea whakatangi. Ko te tino ohie - te manometer wai. Kei te mea te reira i tona tenenga he ringa i roto i Leonardo da Vinci, engari mo taua o tona pōhēhētanga ngingila hoki kahore he whakamahi i roto i tona ora.

Anake i timata te wa o Pascal ki te ine i te pēhanga ki te whakamahi i te ngongo U-āhua ki tonu i te konuoi. I muri, whakakapia te mēkuri i ki te hinu mārua.

I roto i te take o rite tenge i pito e rua o te ngongo ko te taua te taumata wai, ka tono te pēhanga te ki tetahi pito o te ngongo i reira ko te rerekētanga teitei.

P * (1) -P * (2) = gph, te wahi g - whakaterenga o te tinana taka noa, P - wai kiato, h - te rerekētanga teitei i roto i te taumata manometer wai.

Ahakoa te meka e manometers wai i te tūtohutanga nui, Kei te tino iti o ratou mara o tono no te mea o ratou nuinga, raruraru i roto i te faaohiparaa i, me te whānuitanga ruri āhua iti, i te 20 kPa ki 140 kPa.

Ki te tipu haere i te haereraa i mua o te hangarau i roto i te rongonui ka anga ki te tango i gauges pēhanga ki Bourdon ngongo, i roto i te kupu atu e huaina ratou deformation. Inside tenei mehua he ngongo C-āhua o te parahi ki te tikanga taputapu. A, no te tono pēhanga te ki te pito noa o te ngongo e tika, a ka neke te taputapu te pere e tohu te nui o te pēhanga ki runga ki te tauine puta o te pūrere. Ko te matatini atu te āhua o te ngongo, te iti te hapa ko te taputapu.

E whakamahia gauges Mechanical mō te ine i te pēhanga i 40 kPa ki 100MPa. E āhuatanga ratou i te ino o te tika inenga i roto i te mahi tonu. Ko e tika ana ki te deformation tūturu o te huānga mahi tenei.

Hoki inenga o te pēhanga pumanawa o runga ki te 8 * 10 ^ 3 GPA whakamahia gauges piezoelectric.

Mua, e kore e pā ana te wae pēhanga ki tahi i te tahi, ko te maha o, te mea te reira e konei reira he hepohepo oti. Ko te tātai whānui mō te pēhanga inenga e whai ake: P = F / S wahi P - pēhanga, F - kaha, S - rohe. I roto i te pūnaha SI, whanganga te kaha i roto i Newton te, te mita pūrua - ka ko te wae taha pēhanga n / m ^ 2, a huaina te mea Pascal. Heoi, i roto i te mahi maha whakamahi ake me huru, tutaki, Tori mmHg wai mm tīwae, kg / cm ^ 2.

Kia tamata tatou ki te whakamārama i tenei take. Units o te pēhanga kōhauhau - tenei mmHg torr ranei; rite matau koutou, tangohia rite te pēhanga paerewa kōhauhau he 760 mm HG - huaina tenei uara ko te kōhauhau; pae Ko āhua kotahi huru - ko reira he GHS kōwae tawhito; i reira e tonu huru hangarau, i te mea e rite ana ki te kotahi kg / cm ^ 2 - e whakamahia enei uara katoa rite Units Common o te pēhanga hau inenga; whakamahia mm wai tīwae te i roto i Hydraulics me he 13.6 Torus. Me kï reira e i roto i te ahupūngao Pascal, me pärönaki e mohio ona rite waeine pēhanga pūnaha kotahi.