... Extensive measured mediums, can measure liquid, gas and steam; Vortex flowmeterTechnical parameters Nominal aperture: DN15, DN20, DN25, DN32, DN40 ... , DN250, DN300, DN350, DN400, DN450, DN500; Applicability: gas (air, oxygen, nitrogen, coal gas, natural gas, chemical gas and so ... LCD display: -25°C—+55°C;Material of meter body: 1Cr18Ni9Ti (other materials supplied by agreement). Vortex flow meter