What is the length of the upstream and downstream straight section of the Precession Vortex Flowmeter?
In general, if the pipe is not expanding and other conditions affecting the flow of the fluid, the minimum distance is the front 3D and the back 1D, that is to say, the vortex precession flowmeter
Vortex flowmeter for straight pipe requirements, relatively speaking more stringent, or should be the first 10, after 5.
The upstream and downstream straight pipe requirements are: upstream is larger than 3D, the downstream straight pipe is larger than 1D, where D is the diameter of the pipe, in order to ensure the accuracy of the measurement point as far as possible, to have long straight section
