Emerson wayambitsa ma valve oyamba omwe amakwaniritsa zofunikira pakupanga Safety Integrity Level (SIL) 3 motsatira muyezo wa IEC 61508 wa International Electrotechnical Commission.
Kudzipatula kwa DigitoMayankho omaliza a zinthu amakwaniritsa zosowa za makasitomala a ma valve otseka mu mapulogalamu ofunikira a chitetezo (SIS).
Popanda njira iyi, ogwiritsa ntchito ayenera kusankha zigawo zonse za valavu, kupeza chilichonse, ndikuziphatikiza kukhala chinthu chogwira ntchito. Ngakhale izi zitachitika bwino, mtundu uwu wa kusonkhana mwamakonda sungaperekebe zabwino zonse za kusonkhana kwa Digital Isolation.
Kupanga valavu yozimitsa chitetezo ndi ntchito yovuta. Zinthu zomwe zimachitika nthawi zonse komanso zomwe zimasokonekera ziyenera kuyesedwa mosamala ndikumvetsetsedwa posankha zida za valavu ndi actuator. Kuphatikiza apo, kuphatikiza koyenera kwa ma solenoids, mabulaketi, ma couplings ndi zida zina zofunika kuyenera kufotokozedwa ndikugwirizanitsidwa mosamala ndi valavu yosankhidwa. Chilichonse mwa zigawozi chiyenera kugwira ntchito payekhapayekha komanso mogwirizana kuti chigwire ntchito.
Emerson akuthana ndi mavuto awa ndi ena mwa kupereka cholumikizira cha Digital Isolation shutdown valve, chopangidwira ntchito iliyonse. Zigawo zosiyanasiyana zimasankhidwa mwapadera kuti zikwaniritse zofunikira pa ntchito. Cholumikizira chonsecho chimagulitsidwa ngati chipangizo choyesedwa mokwanira komanso chovomerezeka, chokhala ndi nambala imodzi yotsatizana ndi zikalata zogwirizana nazo zomwe zimafotokoza tsatanetsatane wa gawo lililonse la cholumikiziracho.
Popeza kuti chipangizochi chimamangidwa ngati yankho lathunthu m'malo osungira magetsi a Emerson, chimakhala ndi mwayi wokwera kwambiri wa kulephera pakufunika (PFD). Nthawi zina, kulephera kwa chipangizochi kudzakhala kochepera 50% poyerekeza ndi kuphatikiza kwa zida zomwezo za valavu zomwe zagulidwa payekhapayekha ndikusonkhanitsidwa ndi wogwiritsa ntchito.
Nthawi yotumizira: Novembala-20-2021
