... gas, and air etc. And it is the ideal flow measuring device of departments as urban combustion gas, oil field, chemical industry ... °C - +85 °CRelative humidity: 5% -95% Atmospheric pressure: 70Pa-106kPaNominal diameter: DN25-DN200, if there are special requirements, could provide a ... larger diameter of the flow meter.Flow Range :1-1600m3 / hPN : ...