... , DN300, DN350, DN400, DN450, DN500; Applicability: gas (air, oxygen, nitrogen, coal gas, natural gas, chemical gas and ... 5 grade, gas, steam 1.0 grade;Range of flow rate: liquid: 0.6-6 m/s, gas ... level≤1V, higher electrical level ≥6V, width of impulse 0.4ms, load resistance>150Ω;Standard current ... : -25°C—+55°C;Material of meter body: 1Cr18Ni9Ti (other materials supplied by agreement). Vortex flow meter