Flow measurement

The accuracy of gas flow measurement directly depends on the flow profile at the installation point of the instrument. Any local flow disturbance — an elbow, tee, valve, or diameter transition — creates perturbations that distort the velocity profile. These distortions can persist for dozens of pipe diameters, and if a flow meter is installed in an unstabilized flow zone, measurement error can reach tens of percent. Therefore, the question of the required length of straight p