... .0,6.4MPa 3.Tem:-80~+300C Metal tube water/gas rotameter, variable area flow meter IntroductionLZ steel rotor pipeline flow ... and explosive-proof types. It is wildly used for liquid & gas measuring and control in national security, chemical, petroleum, pharmaceutical, and ... , 20°C)Measuring ratio: 10:1 (other special ratio equipment can be made by order)Accuracy level: 1.5; 2.5Maximum working pressure ...