Metal tube rotor flowmeterThere are ordinary and anti-corrosion types, both of which are divided into on-site indication type and electric remote transmission type. The instrument material is (1Cr18Ni9Ti), and the anti-corrosion type is (1Cr18Ni9Ti) lined with PTEF. If the measured medium is prone to crystallization or freezing, a metal tube rotor flowmeter with steam tracing can also be used. If the measured medium contains magnetic objects, a magnetic filter can be installed at the inlet of the flowmeter, which is made of the same material as the corresponding flowmeter.

Pipeline installation requirements

1. The flowmeter must be installed vertically, and the measured fluid passes through the flowmeter from bottom to top. The inlet and outlet must have a straight pipe section of 5 times the diameter of the instrument. For newly installed pipelines, the pipeline should be flushed clean before installing the flowmeter.

2. For the convenience of maintenance and replacement of flow meters, a bypass pipeline needs to be connected during instrument installation.

3. Valves should be installed upstream of the flowmeter, and flow regulating valves should be installed downstream at 5-10 times the instrument diameter. For small-diameter instruments, a filter should be installed upstream. If the measured medium contains magnetic substances, a magnetic filter should be installed before the flowmeter.

4. When the measured medium is dirty, the tube and float should be cleaned in a timely manner.

5Metal tube rotor flowmeterThe measurement accuracy is generally 2.5 levels. When high measurement accuracy is required, it is not advisable to choose a metal rotor flowmeter.

6. For angular metal float flow meters with import and export not in a straight line, when used for liquids, pay attention to whether there is any residual air in the extended sleeve of the external float displacement, and it must be drained completely; If the liquid contains tiny bubbles that are prone to accumulate inside the casing during flow, it is even more important to exhaust them regularly. This is more important for small caliber instruments, otherwise it will significantly affect the flow indication.

7. Instruments with LCD displays should avoid direct sunlight as much as possible to avoid reducing the lifespan of the LCD

8. Avoid vibration. Including vibrations caused by external and internal factors of the pipeline network

9. When multiple instruments are densely installed or carbon steel process pipelines pass near the instruments, the metal tube rotor flowmeter should maintain a distance of at least 100mm from the instruments to avoid magnetic field interference.