输出压力范围 (选择一个) # 3.5 to 5-inches w.c. (9 to 12mbar), # 4.5 to 6.5-inches w.c. (11 to 16mbar), # 6.0 to 8-inches w.c. (15 to 20mbar), # 7.5 to 11-inches w.c. (19 to 27mbar), # 10 to 14-inches w.c. (25 to 35mbar), # 12 to 19-inches w.c. (30 to 47mbar), # 18 to 28-inches w.c. (45 to 70mbar), # 1.0 to 2.0 psig (69 to 138mbar), # 2.0 to 5.5 psig (138 to 380mbar)