Isignali kagesi ye-analog evamile esetshenziswa kakhulu embonini ukusebenzisa i-4-20mA DC yamanje ukudlulisa i-analog.Isizathu sokusebenzisa isignali yamanje ukuthi akulula ukuphazanyiswa, futhi ukumelana kwangaphakathi komthombo wamanje akupheli, futhi ukumelana kocingo ochungechungeni ku-loop akuthinti ukunemba, futhi kungadlulisela amakhulukhulu. wamamitha ocingweni oluvamile olusontekile.Umkhawulo ongaphezulu ngu-20mA ngenxa yesidingo sokuvikela ukuqhuma: amandla e-spark abangelwa ukucisha kwamandla ka-20mA awanele ukuthungela igesi.Isizathu sokuthi kungani umkhawulo ophansi ungasethiwe ku-0mA ukuze ukwazi ukubona ukunqanyulwa: ngeke kube ngaphansi kuka-4mA ngesikhathi sokusebenza okuvamile.Uma ulayini wokudlulisela uphukile ngenxa yephutha, i-loop current yehla iye ku-0, futhi i-2mA ivamise ukusetshenziswa njengevelu ye-alamu yokunqanyulwa.
Isikhathi sokuthumela: Oct-15-2021