The liquid flow meter is a precision instrument for measuring the flow of liquid, gas and steam in the sealed pipe according to the Karman vortex principle. Since the detecting element is sealed in the detecting body, the medium is not measured, and there is no movable part inside, and no on-site maintenance is required. Therefore, it is highly praised by the majority of users.
When using the liquid flow meter on a daily basis, the user should pay attention to the following points:
1. Do not press the instrument: When repairing the instrument, if you want to assemble the instrument, you need to reflect on whether there is pressure in the pipeline. If there is pressure, you must close the upstream and downstream valves, and open the pressure relief valve to relieve pressure. No pressure can stop the unloading task.
2. If the original pipeline is corrosive medium or toxic medium, it is necessary to take maintenance measures during assembly, which cannot damage the personnel and purify the environment.
3. If the pipeline is flammable and explosive, protective measures should be taken during installation and assembly.
4. Pulsation and vibration: In order not to affect the mass flow meter in the process of attack and internal machine vibration.
5. Pipe stress and distortion: The flange of the flowmeter and the pipe flange should be evenly connected when tightening the bolts. Do not stress the mass flowmeter. If the short pipe of the same length as the mass flow meter is pre-connected when the pipe is laid, the stress caused by the bad pipe can be avoided.
6. Avoid the mutual influence of mass flowmeters: Since the two mass flowmeters of the same model are connected in series, or multiple mass flowmeters are close to the parallel device, especially when mounted on the same support gantry, the vibration of the measuring tube will cause the mass flowmeters. Interacting with each other, causing disturbances and causing abnormal vibrations. In severe cases, the instrument cannot be tasked. Precautions should be taken when installing the device.
In addition, when debugging the liquid flow meter , it is also necessary to pay attention to the measurement of the strong abrasive slurry. Generally, the straight tube single tube type is adopted and the measuring tube is placed in a vertical position to avoid uneven wear of the tube wall and prolong the service life. However, the thinner wall thickness will reduce the rigidity of the measuring tube and change the flow measurement value. Therefore, it is necessary to check the operation period during the operation period of this place to confirm the operation cycle.
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