Vortex flowmeter containing particles

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How much do you know about the reasons for inaccurate measurement of vortex flowmeters? The reasons and solutions for inaccurate measurement of vortex street flowmeters are as follows: 1. The installation environment affects the length of the straight pipe section. The length of the straight pipe section of the vortex street flowmeter needs to be determined according to the on-site pipeline direction and regulations. If the length of the straight pipe section is insufficient, it will damage the stability of the flow field and cause serious deviation in the measurement results. Pipeline vibration interference: If the frequency of the signal generated by pipeline vibration is close to the vortex frequency, it will form interference signals, causing measurement errors. Incorrect installation direction: Incorrect flow direction during vertical installation can alter fluid dynamics characteristics, directly affecting the measurement of precise vertical clearance. Response measures: Ensure that the length of the front and rear straight pipe sections meets the requirements, and avoid components such as elbows and valves that change the flow field distribution from approaching the flowmeter. Strengthen the pipeline support and adopt vibration reduction measures (such as rubber shock pads, spring supports, etc.) to reduce the impact of vibration. Recommend using LUB series seismic vortex flowmeter: optimized design of sensor conduction part to avoid vibration interference from the source; The circuit board adopts Fourier transform and seismic algorithm, which can recognize normal vortex signals and filter out interference signals; The anti vibration performance covers scenarios such as large pipeline vibration and abnormal flow, ensuring measurement accuracy.

Secondly, the influence of fluid characteristics on the presence of gas or solid particles in the fluid: The presence of gas or particles can alter the density distribution of the fluid, leading to unstable vortex signals.

. Temperature and pressure changes: Fluid density varies with temperature and pressure fluctuations, and uncompensated measurements may deviate from the true flow rate. Abnormal fluid viscosity: Excessive viscosity can inhibit the formation of vortex streets, while low viscosity may cause attenuation of vortex street signals, both of which affect measurement accuracy. Response measures: Install gas-liquid separators or filters to remove gases or solid particles from the fluid. Choose a flowmeter with temperature and pressure compensation function: automatically perform density compensation on saturated steam, integrate flow and temperature compensation sensors; Can simultaneously measure temperature, pressure, and flow rate, suitable for different installation environments; The table body is detachable and supports online replacement of sensing heads, making maintenance convenient; No mechanical moving parts, high reliability, and low maintenance. Select the appropriate instrument model based on the viscosity range of the fluid to ensure stable generation and detection of vortex signals.

3. Other interference factors: Incorrect settings of instrument parameters such as range and density compensation coefficient, which are not calibrated according to actual working conditions, can lead to indication deviation.

. Temperature impact: Extreme temperatures may alter the material properties of sensors and affect signal conversion accuracy. Inconsistent i

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