Introduction: The use of mass flowmeters for a certain frequency of amplitude motion is a fundamental factor in the occurrence of Coriolis forces (Coriolis forces). It is also the fundamental way for mass flow meters to measure fluid quality. How to maintain the correct amplitude of motion must be analyzed from many aspects such as the installation, use of the environment and the measured medium, mass flow meter during the use of the process will interrupt the measurement phenomenon, then the quality of the flow meter interrupt metering reasons are there? What are the reasons for the mass meter interrupt metering?
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The movement of amplitude at a certain frequency during the use of a mass flow meter is a fundamental factor in the occurrence of Coriolis forces (Coriolis forces). It is also the fundamental way for mass flow meters to measure fluid quality. How to maintain the correct amplitude of motion must be analyzed from many aspects such as the installation, use of the environment and the measured medium, mass flow meter during the use of the process will interrupt the measurement phenomenon, then the quality of the flow meter interrupt metering reasons are there?
1. The outside shakes. The design of the double U-tube flowmeter greatly reduces the influence of external vibration on the flowmeter, but it does not completely eliminate the impact of common-mode vibration on the mass flowmeter. If the external vibration frequency is equal to or close to the frequency of the sensor drive system, then Introduced by the pipeline system, it will interfere with the sensor, destroy its natural vibration frequency, interfere with the instrument's drive control system, cause the sensor vibration instability or stop vibration.
2. Precipitates and suspended matter. The mass flow meter can calculate the mass content of a component in a two-component solution or slurry. Accurate density measurements must be avoided if the sediment adheres to the wall of the measuring tube or solid particles precipitate out of the suspension. The phenomenon of low flow rate should be minimized.
3. Entrainment air bubbles. When the flowmeter is used for liquid flow measurement, the mass flowmeter will generate vibration of the Coriolis force measuring tube when the amount of fogging-like gas reaches a certain proportion of volume, and the gas should be eliminated before the sensor, if it is difficult to achieve, Minimize the gas content, increase the pressure inside the sensor as much as possible, and maintain a high liquid flow rate to ensure that the air bubbles are evenly dispersed into smaller bubbles.
Mass flow meter is a kind of flow measurement instrument with high accuracy, fast response, stable and reliable operation, and flexible installation. It has wide application value in energy, chemical and other fields. As long as reasonable installation and use of mass flow meter, it can effectively improve Accuracy of measurement, cost savings, investment reduction, trade dispute reduction, and improved economic efficiency.