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Instructions for using the five steps of the spiral vortex flowmeter

At present, the gas flowmeters frequently used by enterprises mainly include a spiral vortex flowmeter, a gas turbine flowmeter, a vortex flowmeter, an orifice flowmeter, a power meter flowmeter, a V-cone flowmeter, a metal tube float flowmeter, and a delta. Taba flow meter, etc. The vortex flow sensor is a sensor widely used in petroleum, chemical, electric power, metallurgy, urban gas supply and other industries. The correct use of the vortex flow sensor should follow the following five requirements. Accuracy.
1, the correct selection
The vortex flowmeter is widely used in natural gas, gas and other industries. It has stable performance, accurate measurement and convenient installation. In the case where it is determined that the vortex flowmeter should be selected, the flow sensor specification and its components are selected. It is vital. 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, three selection parameters must be implemented, namely the maximum, minimum and common instantaneous flow rates in the near and long term, the design pressure of the measured medium, and the working pressure.
2, before using the standard school
On the one hand, it is considered that there are still such difficulties in the field verification of such flow sensors. In addition, if the purchase intention is to prepare the flow sensor 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 on-site calibration conditions, In this case, it is too early to judge that the flow sensor is fully qualified only by a factory-provided 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 flow sensor in the future work, it is necessary to send the flow sensor 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 kind of flow sensor does not have too many special requirements for the process installation and use environment, any type of flow measuring instrument has such a commonality that vibration and high temperature environment are avoided as much as possible, and the flow sensor is kept away from the flow state. The inner wall of the straight pipe section is smooth and straight, ensuring that the measured medium is a clean single-phase fluid.
4. Strengthen post management
Although the vortex flowmeter has many automatic disposal functions and micro-power consumption characteristics, it still needs to be strengthened after being put into operation. For example, in order to ensure the accuracy and reliability of the long-term operation of the flow sensor, the system should be regularly calibrated, the meter data should be transcribed, the media parameters should be changed, and the battery condition should be checked occasionally, and the flow sensor coefficient and lead seal should be checked.
5, pay attention to internal maintenance
If the measuring chamber and its components of the flow sensor need to be regularly inspected or cleaned due to temperament or other reasons, then one must pay special attention to: for the same size of the vortex flow sensor, the vortex generator, the fluid guide The core components are not interchangeable. Otherwise, the metering factor must be recalibrated and the temperature and pressure sensors associated with it must be systematically calibrated.

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