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1. Detailed explanation of the usage steps of Cologne metal tube rotor flowmeter
The use of Cologne metal tube rotor flowmeter requires strict adherence to operating specifications, with the core being installation compliance, flow control stability, and continuous operation monitoring. 1. Preparation for appearance and matching inspection before installation: Before use, it is necessary to confirm that the appearance of the flowmeter is not damaged or deformed, and that the flange or threaded interface is not loose. Special attention should be paid to whether the medium type, temperature, and pressure range on the flowmeter label match the on-site working conditions, in order to avoid damage caused by excessive use. Flow direction and verticality calibration: The flow direction of the medium must be consistent with the direction marked on the flowmeter. During installation, a level should be used to assist in ensuring that the verticality deviation of the measuring tube is ≤ 2 °. Tilting can cause the float to rub against the tube wall, affecting measurement accuracy. 2. Installation implementation points: Pipeline layout specifications: A straight pipe section with a diameter of ≥ 5 times the diameter should be reserved upstream of the flowmeter, and a diameter of ≥ 3 times the diameter should be reserved downstream. If the medium contains impurities, a 40 mesh filter should be installed at the inlet to prevent particles from sticking to the float. Sealing operation details: When connecting flanges, diagonal cross fastening bolts are required, and 0.5mm thick graphite composite gaskets are used. For pipe diameters above DN50, it is recommended to use the segmented pre tightening method and incr
4. Daily maintenance rules Periodic lubrication maintenance: Every 3000 hours or half a year of operation, add ISO VG32 turbine oil through the grease injection port, and the amount of oil injected each time should not exceed 1/3 of the chamber volume. After oil injection, manually adjust the float 5-10 times to evenly distribute the oil. Sealing test method: Increase the pressure to 1.5 times the working pressure while the machine is stopped, and maintain the pressure for 15 minutes. When the pressure drop exceeds 5%, a fluorescent leak detector should be used to locate the leakage point, with a focus on inspecting the joint surface between the shaft seal and the flange.
2. Introduction to the Third Generation Metal Tube Float Flow Meter
The third generation metal tube float flow meter is developed and manufactured by Chengfeng Instrument, which further improves the usability and advantages of the metal tube float flow meter through the use of rubber fibers.
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