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1. Issues related to the selection of vortex flowmeters (http://www.yb1518.com/ProductShow_151.html). Some vortex flow meter sensors, either due to the choice of diameter or as a result of changes in manufacturing conditions after the initial design, end up having a diameter that is too large; in such cases, it is necessary to choose the smallest possible diameter in order to improve measurement accuracy. The reasons for this are mainly related to issues ①, ③, and ⑥. For example, a vortex flow meter pipeline is designed to serve several devices; since some of the equipment in the process system is not used at times, the actual flow rate in use is reduced. This results in the originally selected pipe diameter being too large, which in turn raises the lower limit of the flow rate that can be measured. The meter cannot provide accurate readings when the flow rate is low, but it still functions properly when the flow rate is high, as it would be too difficult to make modifications in such cases. Changes in process conditions are only temporary). The indication accuracy can be improved by adjusting the parameters. 2. Issues with installation. Mainly, the length of the straight section in front of the sensor is insufficient, which affects the measurement accuracy; this issue is primarily related to problem #1. For example: the straight section in front of the sensor is clearly insufficient; since it is not used for measurement but only for control, the current accuracy is acceptable (equivalent to using it at a reduced level). 3. Reasons for the parameter tuning direction. The instrument shows incorrect readings due to incorrect parameters. Parameter errors lead to incorrect calculation of the full-scale frequency of the secondary instrument; the causes of this are mainly related to issues ① and ③. A significant difference in the full-scale frequency leads to inaccurate readings over time; when the actual full-scale frequency is higher than the calculated value, the readings fluctuate greatly and become unreadable. Moreover, inconsistencies in the parameters listed in the documentation affect the final determination of these parameters. This issue was resolved by performing re-calibration and making comparisons between different values. 4. Fault in the secondary instrument of the vortex flow meter (http://www.yb1518.com/ProductShow_151.html). There are many faults in this area, including broken wires in the primary instrument circuit boards, faulty display of individual bits related to range setting, and faulty display of individual bits related to K-factor setting, which makes it impossible to determine the range setting and the K-factor value. These issues are mainly related to problems ① and ②. The problem was resolved by fixing the corresponding fault. 5. Issues with the connection of four circuits. On the surface, the wiring in some circuits appears to be properly connected; however, upon closer inspection, it is found that some connectors are actually loose, resulting in a disruption of the circuit. In other cases, although the connectors are tightly fitted, issues with the auxiliary wires cause the fastening screws to tighten around the wire insulation, which also leads to a disruption of the circuit. These problems are mainly related to issue #2. The corresponding wiring issues have been resolved, and the existing problems have also been fixed. 6. Issues related to the connection between secondary instruments and subsequent instruments. Due to issues with subsequent instruments or maintenance work on those instruments, the mA output circuit of the secondary instrument is interrupted. For this type of secondary instrument, this issue is mainly related to problem #2. Especially for subsequent recorders, when the recorder is permanently damaged and cannot be repaired, it is essential to short-circuit the output of the secondary instrument. 7. The circuit shows no indication at all due to a fault in the parallel axis cable of the secondary instrument. Due to long-term operation and the impact of dust, flat cable failures occurred; the problem was resolved by cleaning or replacing the flat cables. 8. Regarding issue No. 7, it was mainly caused by loose fixing screws of the gauge coil in the secondary instrument, which led to the gauge dropping downward; this resulted in excessive friction between the pointer and the gauge casing, causing abnormal operation. The problem was resolved by adjusting the gauge and re-fixing it. 9. Environmental usage issues. Especially the sensor part installed in the ground well suffers from moisture on the circuit boards due to high environmental humidity; this issue is primarily related to problems ② and ②. Through appropriate technical modifications, the probes of some sensors that operate in high humidity environments were separated from their conversion units, and separate-type sensors were used as a result; this improved the working conditions, and these instruments are now functioning well. 10. Vortex flowmeters (http://www.yb1518.com/ProductShow_151.html) suffer from problems due to inadequate on-site calibration, or as a result of further changes in the actual operating conditions after calibration. Due to poor adjustment of on-site vibration noise balance and sensitivity. Or, due to further changes in the on-site conditions after running for a period of time following the adjustments, indication problems may arise; this aspect is mainly related to issues ④ and ⑤. Use an oscilloscope, and adjust again in conjunction with the operation status of the process. For more information, please visit the company’s official website at http://www.yb1518.com/. Please keep this link when reproducing the content! http://www.yb1518.com/UploadFiles/20175239314754.jpg