... Tem.:-50~+200C 3.Pressure:0~40MPa V cone water /gas differential pressure flow meter IntroductionV cone flow ... gasesAll kinds of gases: hydrogen, helium, argon, oxygen, nitrogen; air content water/dustFlue gasSTEAM: Saturated steam, superheated steamLIQUID: Oil, ... fuel oil, emulsifying oil content waterWater, including pure water, sewageAll kinds of solution, including salt solution and alkaline ...