Abantu abaningi bavamise ukwenza iphutha ngamaphutha okuthumela umfutho nezinzwa zokucindezela ngokufanayo, ezimele izinzwa. Eqinisweni, zihluke kakhulu.
Insimbi yokulinganisa kagesi ethuluzini lokulinganisa ingcindezi ibizwa ngokuthi inzwa yokucindezela. Izinzwa zokucindezela ngokuvamile zakhiwa izinzwa ezinwebekayo nezinzwa zokugudluza.
1. Umsebenzi wento ezwelayo enwebekayo ukwenza ingcindezi elinganisiwe isebenze endaweni ethile futhi iyiguqule ibe yi-displacement noma i-strain, bese iyiguqula ibe isignali kagesi ehlobene nokucindezela ngento ebucayi yokugudluka noma i-strain gauge. Ngezinye izikhathi imisebenzi yalezi zakhi ezimbili ihlanganiswe, njengenzwa ye-solid-state pressure sensor ku-piezoresistive sensor.
2. Ukucindezela kuyipharamitha yenqubo ebalulekile enqubweni yokusetshenziswa kanye ne-aerospace, izindiza kanye nezimboni zokuvikela zikazwelonke. Ayidingi nje kuphela ukuyeka ukulinganisa okusheshayo nokushintshayo, kodwa futhi ibonise ngedijithali futhi irekhode imiphumela yokulinganisa. Ukuzenzekela kwezindawo ezinkulu zokuhluza uwoyela, izitshalo zamakhemikhali, izimboni zamandla nezitshalo zensimbi nezensimbi nakho kudinga ukudlulisa imingcele yokucindezela ngezikhathi ezinde, futhi kucele ukuguqula ingcindezi kanye neminye imingcele, efana nezinga lokushisa, ukugeleza kanye ne-viscosity, ibe amasignali edijithali futhi zithumele kukhompuyutha.
3. Inzwa yokucindezela uhlobo lwenzwa eyaziswa kakhulu futhi yathuthukiswa ngokushesha. Umkhuba wokuthuthuka wenzwa yokucindezela ukuthuthukisa isivinini sokuphendula esiguquguqukayo, ukunemba nokuthembeka, kanye nokwenza amadijithi okuphelele nobuhlakani. Izinzwa zokucindezela ezivamile zifaka inzwa ye-capacitive pressure, inzwa yokucindezela okuguquguqukayo, inzwa yokucindezela kwehholo, inzwa yokucindezela kwe-fiber optical, inzwa yokucindezela ezwakalayo, njll.
Kunezinhlobo eziningi zama-transmitter. Ama-transmitter asetshenziswa kumathuluzi okulawula izimboni ikakhulukazi afaka isidlulisi sezinga lokushisa, isidluliseli somfutho, isidlulisi sokugeleza, isidluliseli samanje, isidlulisi se-voltage nokunye.
1. I-transmitter ilingana ne-amplifier yesignali. Isidluliseli se-AC220V esisisebenzisayo sihlinzeka nge-voltage yebhuloho ye-dc10v kunzwa, bese ithola isignali yempendulo, ikhulise futhi ikhiphe i-voltage engu-0V ~ 10V noma isignali yamanje. Kukhona nama-transmitters amancane e-DC24V, acishe abe makhulu njengezinzwa futhi kwesinye isikhathi afakwe ndawonye. Ngokuvamile, i-transmitter inikeza amandla kunzwa futhi ikhulise isignali. Inzwa iqoqa amasignali kuphela, njenge-strain gauge, eshintsha isignali yokugudluza ibe isignali yokumelana. Yiqiniso, kunezinzwa ezingenawo amandla, njenge-thermocouples kanye ne-piezoelectric ceramics, evame ukusetshenziswa.
2. Sisebenzise izinhlobo ezahlukene zezinzwa zokucindezela, kodwa isidlulisi asikaze sishintshwe. Inzwa yokucindezela ithola isignali yokucindezela, ngokuvamile ibhekisela kumitha eyinhloko. I-pressure transmitter ihlanganisa imitha yokuqala kanye nemitha yesibili, futhi iguqula isignali etholiwe ibe yizimpawu ezijwayelekile ze-4-20, 0-20 Ma noma 0-5V, 0-10V, Ungakuqonda lokhu ngokucacile: inzwa "izwa" idluliselwe isignali, futhi isidlulisi asiyizwa nje kuphela, kodwa futhi "siba" isignali evamile bese "siyithumela" ngaphandle.
Inzwa yokucindezela ngokuvamile isho into ebucayi eguqula isignali yokucindezela eshintshile ibe isignali yokumelana ehambisanayo eshintshile noma isignali yamandla, njenge-piezoresistive element, i-piezocapacitive element, njll. I-pressure transmitter ngokuvamile ibhekisela kusethi ephelele yeyunithi yesekethe yokulinganisa ingcindezi eyakhiwe izakhi ezizwela ukucindezela kanye nesekethe yokubeka isimo. Ngokuvamile, ingakwazi ukukhipha ngokuqondile isiginali ye-voltage evamile noma isignali yamanje ebudlelwaneni bomugqa nengcindezi yokuqoqwa okuqondile ngamathuluzi, i-PLC, ikhadi lokutholwa nezinye izinto zokusebenza.
UFUNA UKUSEBENZA NATHI?
Isikhathi sokuthumela: Sep-08-2021