The plastic tube rotor flowmeter is a flow measurement instrument based on the float principle, which indicates the flow rate by the position change of the float inside the conical plastic tube,
Installation and structure of plastic tube rotor flowmeter
Installation direction
It must be installed vertically, with fluid flowing from bottom to top to ensure the stability of the float. Tilting installation can lead to increased friction between the float and the cone tube, resulting in a significant increase in measurement error.
A straight pipe section (5D in front and 3D in back) should be left before and after the instrument to eliminate the influence of eddy currents. If space is limited, a rectifier can be installed.
connection method
Plug in: Suitable for quick installation of small diameters (below DN15), but with poor sealing performance.
Thread: Good sealing performance, suitable for DN15-DN50 pipelines, thread specifications need to be confirmed (such as G1/2, G1).
Flange: Suitable for large-diameter (DN50 or above) or high-pressure scenarios, it needs to be matched with pipeline flange standards (such as PN16, PN25).
Welding: connection, best sealing, but difficult to disassemble and maintain after installation.
structural type
Transparent tube: Made of PC or PMMA material, it allows direct observation of the float position and fluid state, making it easy to debug and troubleshoot.
Opaque tube: Made of PVDF or PP material, it has stronger corrosion resistance but cannot be visually observed inside.
Split type: The sensor and converter are separated, suitable for high temperature, high pressure, or vibration environments, reducing interference.