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1. Common faults and solutions of metal tube rotor flowmeter
Common faults and solutions of metal tube rotor flowmeter During use, metal tube rotor flowmeter may encounter various faults. The following is an analysis of these common faults and corresponding solutions:
Firstly, the flowmeter has large errors. The gas medium is greatly affected by temperature and pressure. The reason is that the measured gas medium is affected by temperature and pressure, resulting in measurement errors. Solution: Use temperature and pressure compensation to obtain the true flow rate. Reason for loosening of moving parts: Long term use, pipeline vibration, and other factors have caused the sensor magnets, pointers, counterweights, rotating magnets, and other moving parts of the float flowmeter to loosen. Solution: First, verify the hunger vertical certificate by manually pushing the pointer. If the data does not match, adjust the relevant components. Adjustments need to be made by professionals, and non professionals may cause position loss and ultimately need to be returned to the manufacturer for calibration. Reasons for installation not meeting requirements: The flowmeter is not kept vertical or horizontal (inclination angle greater than 20 degrees), or there are ferromagnetic objects around the installation location, or the installation location is not far away from the variable diameter port, pump port, process pipeline turning point, etc., or does not meet the requirements of the straight pipe section of the first 5D and the second 250mm. Solution: Ensure that the flowmeter remains vertical or horizontal (with a tilt angle of no more than 20 degrees) and is kept away from ferromagnetic objects and unfavorable install
2. Slight pointer shaking Reason: Changes in the medium state.
. Solution: Adopt the method of increasing damping to overcome pointer shaking. Reason for moderate shaking: Changes in the flow state of the medium, such as unstable operating pressure of gas medium. Solution: Use a Zhaoxiao voltage stabilizer or current stabilizer, or increase the air damping of the rotor flowmeter. Reason for severe shaking: medium pulsation, unstable air pressure, or the gas operation state provided by the user does not match the actual state of the rotor flowmeter. Solution: Check the pulsation of the medium and the stability of the air pressure to ensure that the operating state provided by the user is consistent with the actual state of the flowmeter.Thirdly, the pointer stops at a certain position and does not move. Reason: The rotor is stuck, which may be due to the valve opening too quickly, causing the rotor to quickly impact the stopper and deform it, or the rotor guide rod and stop ring are not concentric.
. Solution: Remove the instrument panel, correct the deformed stopper, check if the guide rod is concentric, and if not, correct it. Reinstall the rotor to ensure that it can move up and down smoothly. At the same time, ensure that the flowmeter is installed vertically or horizontally to avoid tilting and causing the meter to get stuck. The