Pay attention to the following issues during the use of the precession vortex flowmeter :
① Paying attention to instrument selection is very important to the selection of instrument specifications and their supporting components. In a word, choose well before you can make good use of it. For this reason, two basic principles should be grasped in the selection process; that is, one must ensure the accuracy of use, and the other must ensure the safety of production. To achieve this, three selection parameters must be implemented, namely the maximum, minimum, and common instantaneous flow rates (mainly used for selecting the size of the instrument) and the design pressure of the measured medium (mainly used for The nominal pressure level of the selected instrument), working pressure (mainly used to select the pressure level of the instrument pressure sensor).
② On-the-spot calibration. On the one hand, considering the current on - site verification of precession vortex flowmeters , there are still such difficulties. In addition, if the purchase intention is to prepare to use the precession vortex flowmeter for more important measurement occasions, such as high-volume trade measurement or measurement points with prominent measurement disputes, and the application site does not have the conditions for online flow calibration, In this case, it is premature to simply determine that all the performance of the watch is qualified based on a piece of factory-qualified certificate provided by the manufacturer at the time of purchase. Therefore, in order to ensure the reliability and accuracy of the measurement results of the instrument in the future work process, it is necessary to send it to the department with the capability and qualification for this aspect to perform a system verification within the full flow range before the formal installation.
③ Do a good job of process installation Although the precession vortex flowmeter does not have too many special requirements for the process installation and use environment, any type of flow measurement instrument has a commonality, that is, to avoid as much as possible vibration and high temperature environment Interfering components (such as compressors, separators, pressure regulators, large and small headers and manifolds, elbows, etc.), keep the inner wall of the straight pipe section before and after the flowmeter smooth and straight, and ensure that the measured medium is a clean single phase fluid.
④ Strengthen the later stage management Although the rotary vortex flowmeter has a variety of automatic disposal functions and features of micro power consumption, it still needs to be strengthened after commissioning. For example, in order to ensure the accuracy and reliability of the meter's long-term work (to avoid accidental outages and data loss), the system calibration should be performed regularly (every 1 to 2 years), the header data should be copied (daily or weekly), and replaced. Media parameters (monthly or quarterly) and occasionally check battery status, check meter factor and lead seal, etc.
⑤ Pay attention to internal maintenance. If the measuring cavity and its components need to be regularly inspected or cleaned due to temperament or other reasons, then one point must be paid special attention to: for vortex flowmeters of the same specification, the vortex generator The core components, such as fluid guide, cannot be interchanged. Otherwise, the meter's metering coefficient must be re-calibrated and the temperature and pressure sensors must be calibrated.