1,V type throttling element for flow rate measurement of flow meter 2,eliminate the residuce area, to prevent stagnation BYM- ... 4. easy to installment and maintenance.5.high measuring precision, flow calibration uncertainty:± 0.5%~± 0.2% ( water calibration oil calibration)6, ... drift. sensors shall install and use at the same nominal diameter pipeline pipeline inner wall should be smooth, clean, no ...