Thread Content
How to calibrate and test vortex flowmeters: 1. Issues related to selection. Some vortex flow meter sensors, either during the selection of the diameter or after the design phase due to changes in manufacturing conditions, end up having a diameter that is too large; in practice, the smallest possible diameter should be chosen to improve measurement accuracy. For example, a vortex flowmeter 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 gauge cannot provide accurate readings when the flow rate is low, but it still functions properly at higher flow rates, as redesigning the system can be very difficult in such cases. 2. Reasons for the parameter tuning direction. Due to incorrect parameters, the vortex flowmeter gives inaccurate readings. These parameter errors result in an incorrect calculation of the full-scale frequency for the secondary instrument. A significant difference in the full-scale frequency leads to inaccurate readings over time; when the actual full-scale frequency is much 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 re-calibrating and making comparisons between different values. 3. Issues related to the installation of vortex flowmeters. The main issue is that the length of the straight section in front of the sensor is insufficient, which affects the measurement accuracy. 4. Wiring connection issues. On the surface, the wiring in some circuits appears to be properly connected; however, upon closer inspection, it was found that the connectors of some vortex flowmeters were actually loose, resulting in a disruption in the circuit. In other cases, although the connectors were tightly fitted, issues with the auxiliary wires caused the tightening screws to grip the wire insulation instead, which also led to a disruption in the circuit. For more information, please visit the company’s official website at http://www.yb1518.com/. Please retain this link when reproducing the content! http://www.yb1518.com/UploadFiles/20175239314754.jpg