Chifukwa chiyani 4 ~ 20mA 2-waya Imakhala Kutulutsa Kwakukulu kwa Transmitter

Pankhani yotumizira ma siginecha pamakina opangira makina, 4 ~ 20mA ndi imodzi mwazosankha zofala. M'malo mwake padzakhala mgwirizano wa mzere pakati pa kusintha kwa ndondomeko (kupanikizika, mlingo, kutentha, ndi zina zotero) ndi zomwe zikuchitika. 4mA imayimira malire otsika, 20mA imayimira malire apamwamba, ndipo kutalika kwake ndi 16mA. Ndiubwino wamtundu wanji womwe umasiyanitsa 4 ~ 20mA kuchokera kuzinthu zina zamakono ndi magetsi ndikukhala otchuka kwambiri?

Panopa ndi magetsi onse amagwiritsidwa ntchito potumiza chizindikiro chamagetsi. Komabe, chizindikiro chamakono chimakonda kwambiri kuposa magetsi ogwiritsira ntchito zida. Chimodzi mwazifukwa zazikulu ndikuti kutulutsa kosalekeza sikungapangitse kutsika kwamagetsi pamayendedwe akutali chifukwa kumatha kukweza magetsi oyendetsa kuti athe kubweza kufalikira. Pakadali pano, poyerekeza ndi siginecha yamagetsi, yapano ikuwonetsa ubale wofananira ndi masinthidwe osinthika omwe amathandizira kuwongolera bwino komanso kubweza.

Kuteteza Mphezi Kumiza Level Transmitter, 4 ~ 20mA 2-waya

Mosiyana ndi sikelo yanthawi zonse yamasiku ano (0 ~ 10mA, 0 ~ 20mA etc.) gawo lalikulu la 4 ~ 20mA silimasankha 0mA ngati malire ochepera oyezera. Cholinga chokweza sikelo ya zero kuti ikhale yamoyo ndikuthana ndi vuto la zero lomwe limatanthauza kulephera kuzindikira kuwonongeka kwa dongosolo kumayambitsa kulephera kumabweretsa kutulutsa kwa 0mA kosadziwika ngati sikelo yocheperako ilinso 0mA. Ponena za chizindikiro cha 4 ~ 20mA, kuwonongeka kungathe kudziwika bwino ndi kutsika mosadziwika bwino pansi pa 4mA popeza sikungaganizidwe ngati mtengo woyezera. 

4 ~ 20mA Differential Pressure Transmitter, live zero 4mA

Kuphatikiza apo, malire otsika a 4mA amatsimikizira kuti mphamvu zomwe zimagwiritsidwa ntchito sizimachepa kuti chipangizocho chigwiritsidwe ntchito pomwe malire apamwamba a 20mA amachepetsa kuvulala komwe kungawononge thupi la munthu chifukwa cha chitetezo. Chiŵerengero cha 1:5 range ratio mogwirizana ndi njira yachikhalidwe yowongolera mpweya chimathandizira kuwerengera kosavuta komanso kapangidwe kabwino. Mawaya awiri oyendetsedwa ndi lupu ali ndi chitetezo champhamvu cha phokoso ndipo ndi osavuta kuyika.

Ubwinowu m'mbali zonse mwachilengedwe umapangitsa 4-20mA kukhala imodzi mwazinthu zosunthika kwambiri pakuwongolera makina. Shanghai WangYuan ndi zaka zoposa 20 zida wopanga. Timapereka zida zabwino kwambiri zokhala ndi 4-20mA kapena zosankha zina zosankhidwa mwamakondakupanikizika, mlingo, kutenthandikuyendakulamulira.