... of air,natural gas andgase to be measured. 1>Accuracy:1.0% 2>Display:LCD Air flow meter is ... 3.Low velocity min.velocity of flow:less than 1.5m/s4.Compensation with temperture and pressure compensation(option ... )6.LCD display7.Multi output pulse,4^20mADC8.spectrum15,25,40,50,80,100,150,200,250,300mm.SpecificationDN ... temperature: -20~50 Degree CentigradeHumidity:Less than 95% Model LWGQ Air flow meter