float flow meterThe requirement for the straight pipe section is usually that the length of the upstream straight pipe section is not less than 5 times the pipe diameter (5D), and the length of the downstream straight pipe section is not less than 250mm or 3 times the pipe diameter (3D), which needs to be adjusted according to the type of flowmeter, medium characteristics, and installation conditions. The following is an explanation of the special factors that affect the requirements for straight pipe sections:

medium characteristics

High viscosity medium: It is necessary to extend the upstream straight pipe section to more than 10D to reduce the influence of viscosity on the flow state.

Medium containing solid particles: A filter should be installed in front of the flowmeter, and the inner wall of the straight pipe section should be smooth to avoid particle deposition.

Ferromagnetic substance: A magnetic filter should be installed in front of the flowmeter to prevent impurities from adsorbing onto the float.

Installation direction

Vertical installation: Fluid flows from bottom to top, with stricter requirements for straight pipe sections (verticality better than 2 °).

Horizontal installation: Ensure that the horizontal angle is greater than 2 ° and that the fluid flow direction is consistent with the direction indicated on the flowmeter.

pipeline vibration

If there is vibration in the pipeline, fastening devices should be installed 2D upstream and downstream of the flowmeter to prevent sealing leakage or measurement errors caused by vibration.