Chiyambi cha 4-20 mA Output

1. Kodi kutulutsa kwa 4-20 mA n'chiyani?
4-20 mA ndi chizindikiro chamakono cha analog chomwe chimagwiritsidwa ntchito kwambiri mu zida zamafakitale, monga ma level meter, flow meter, ma pressure transmitters, ndi zina zotero.
4 mA ikuyimira mtengo wotsika wa 0%
20 mA ikuyimira mtengo wapamwamba wa 100%
2. Ubwino wa 4-20 mA
Mphamvu yolimbana ndi kusokoneza, yoyenera kutumiza kutali
Sizikhudzidwa kwambiri ndi kukana kwa chingwe ndi kutsika kwa magetsi
Kuzindikira mosavuta kusweka kwa waya (chizindikiro < 4 mA chimatanthauza cholakwika)
Imagwirizana ndi ma PLC ambiri, DCS, ma recorder ndi makina owongolera
Yokhazikika komanso yodalirika m'malo ovuta a mafakitale
3. Ntchito zachizolowezi
Tumizani miyeso yoyezedwa (mlingo, kuyenda, kuthamanga, kutentha)
Lumikizani ku machitidwe owongolera kuti muyang'anire ndikuwongolera
Amagwiritsidwa ntchito m'zida zosiyanasiyana zamafakitale
Yoyenera mafuta, mankhwala amadzi, mankhwala, magetsi ndi mafakitale ena