Rotary vortex flowmeter use note

Rotary vortex flowmeter
1 Emphasis on instrument selection In the case where the instrument type has been selected (for example, a smart spiral vortex flowmeter), it is crucial to the selection of the instrument specifications and their components. In a word, you can use it if you choose it. To this end, the two basic principles should be grasped in the selection process; that is, one must ensure the accuracy of use, and the other must ensure production safety. To do this, it is necessary to implement three selection parameters, namely the maximum, minimum and common instantaneous flow rates in the near and long term (mainly used for the size of the selected instrument) and the design pressure of the measured medium (mainly used for The nominal pressure level of the selected instrument) and the working pressure (mainly used to select the pressure level of the instrument pressure sensor).
    2 Pre-calibration on the one hand On the one hand, considering the current on-site verification of such instruments, there are still such difficulties. In addition, if the intention of the purchase is to prepare the instrument to be used in more important measurement occasions, such as the measurement points with large flow of trade measurement or measurement disputes, and the use of the site does not have the online conditions for the flow calibration, then In this case, it is too early to judge that all the performance of the watch is qualified by the one-factory certificate of proof 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, it is necessary to send it to the department with the verification capability and qualification in this aspect for a system verification within the full flow range before the formal installation.
    3 Do a good job in process installation Although this type of instrument does not have too many special requirements for the process installation and use environment, any type of flow measurement instrument has such a commonality, that is, avoid vibration and high temperature environment as much as possible with the flow disturbance component. (such as compressors, separators, pressure regulating valves, size heads and manifolds, elbows, etc.), keep the inner wall of the straight pipe section before and after the instrument smooth and straight, and ensure that the measured medium is a clean single-phase fluid.
    4 Strengthening post-management Although this kind of instrument has many automatic disposal functions and micro-power consumption characteristics, it still needs to be strengthened after operation. For example, in order to ensure the accuracy and reliability of the instrument's long-term work (to avoid accidental outages and data loss), the system should be regularly scheduled (every 1~~2 years), and the meter data (daily or weekly) should be transcribed. Change media parameters (monthly or quarterly) and check battery status, check meter factor and seals from time to time.
    5 Pay attention to internal maintenance If the measuring chamber and its components need to be regularly inspected or cleaned due to temperament or other reasons, then one must pay special attention: for the same size of the spiral vortex flowmeter, the vortex generator Core components such as fluid guides are not interchangeable. Otherwise, the metering factor must be recalibrated and the temperature and pressure sensors associated with it must be systematically calibrated.