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