... %,special calibrated::±0.5%.3.Low velocity min.velocity of flow:less than 1.5m/s4.Compensation with temperture and pressure ... compensation(option)5.Lubricate with lubicated system(option)6.LCD display7.Multi output pulse,4^20mADC8.spectrum15 ... ,40,50,80,100,150,200,250,300mmSpecificationDN(mm)Normal Flow Range(Nm3/h)PN(mPa)Pressure loss(kPa)Error 1 ...