Ka whakamahia e ngā tuku pēhanga ahumahi WP401C te wāhanga pūoko kawemai matatau, e honoa ana ki te hangarau whakauru āhua totoka me te hangarau diaphragm wehe.
Kua hangaia te tuku pēhanga kia pai te mahi i raro i ngā āhuatanga rerekē.
Ko te ātete pāmahana e hanga ana i runga i te turanga uku, koinei te hangarau tino pai o ngā tuku pehanga. He tohu putanga paerewa 4-20mA, 0-5V, 1-5V, 0-10V, 4-20mA + HART. He kaha te ārai-aukati o tēnei tuku pehanga, ā, he pai mō te tono tuku tawhiti.