Li-transmitters tsa khatello ke likarolo tsa bohlokoa lits'ebetsong tsa indasteri tse lekanyang bongata ba 'mele boo e seng ba motlakase, joalo ka mocheso, khatello, lebelo le angle. Ka tloaelo, li-transmitters tsa 4-20mA li tla ka mefuta e meraro: li-transmitters tse nang le terata tse 'nè (lithapo tse peli tsa motlakase le tse peli tsa hona joale tse hlahisoang), li-transmitters tse tharo (tse hlahisoang hona joale le matla li arolelana terata e le' ngoe), le li-transmitters tse peli.
Sehloohong sena, re tla tšohla melemo ea li-transmitter tse peli tsa terata, e leng mofuta oa mochine oa khatello o fumaneng botumo lilemong tsa morao tjena. Mona ke tse ling tsa melemo ea mantlha ea li-transmitters tsa terata tse peli:
1. Ho fokotseha ho fokolang ho thermocouples ea parasitic le marotholi a motlakase: Li-transmitters tse nang le terata tse peli ha li khone ho hlaseloa ke li-parasitic thermocouples le marotholi a motlakase haufi le terata, e leng se li lumellang ho sebelisa lithapo tse tšesaane, tse theko e tlaase. Sena se ka boloka chelete e ngata ea cable le litšenyehelo tsa ho kenya.
2. Tšitiso e fokolitsoeng ea motlakase: Ha khanyetso e hlahisoang ke mohloli oa hona joale e le khōlō ka ho lekaneng, motlakase o bakoang ke matla a khoheli a hokahaneng ho lupu ea terata hangata ha o na thuso. Lebaka ke hobane mohloli oa tšitiso o baka motlakase o monyenyane o ka fokotsoang ho sebelisoa lithapo tse sothehileng.
3. Bolelele ba cable e telele: Ho kena-kenana le capacitive ho ka baka liphoso ho hanyetsa ha moamoheli. Leha ho le joalo, bakeng sa 4-20mA lupu ea terata e 'meli, khanyetso ea moamoheli hangata ke 250Ω, e nyane ho lekana ho hlahisa liphoso tse sa reng letho. Sena se lumella bolelele ba lithapo tse telele le tse hole ha li bapisoa le sistimi ea telemetry ea voltage.
4. Ho feto-fetoha ha maemo ho khethoeng ha mocha: Lisebelisoa tse fapa-fapaneng tsa pontšo e le 'ngoe kapa tsa ho rekota li ka fetoloa pakeng tsa liteishene tse fapaneng tse nang le bolelele bo fapaneng ba cable ntle le ho baka phapang ea ho nepahala. Sena se lumella ho nkuoa ha data le taolo e bohareng.
5. Ho lemoha phoso e bonolo: Ho sebelisa 4mA bakeng sa boemo ba zero ho etsa hore ho be bonolo ho lemoha lipotoloho tse bulehileng, lipotoloho tse khutšoanyane, kapa tšenyo ea sensor (boemo ba 0mA).
6. Ho bonolo ho eketsa lisebelisoa tsa ts'ireletso ea surge: Lisebelisoa tsa ts'ireletso ea surge li ka kenyelletsoa habonolo koung ea lihlahisoa tse peli tsa terata, e leng se etsang hore e sireletsehe le ho hanyetsa lehalima le ho phahama.
Qetellong, li-transmitters tse nang le terata tse peli li fana ka melemo e mengata ho feta mefuta e meng ea li-transmitter, joalo ka ho fokotsa ts'oaetso ea li-parasitic thermocouples le marotholi a motlakase, tšitiso e fokotsehileng ea motlakase, bolelele ba cable e telele, ho feto-fetoha ha maemo khethong ea mocha, ho lemoha liphoso habonolo, le ho eketsoa habonolo ha ts'ebetso. lisebelisoa tsa tšireletso. Ka melemo ena, li-transmitters tsa khatello ea lithapo tse peli li ntse li tsebahala haholo lits'ebetsong tsa indasteri tse hlokang litekanyo tse nepahetseng le tse tšepahalang tsa khatello.
Nako ea poso: Apr-25-2023