1. Selection of vortex flowmeter. In terms of the technology of vortex flowmeters, generally one diameter has one flow range, and it cannot be the same diameter as the rotameter. If I change the density of the float, I can make a lot of flow ranges. Therefore, when choosing a vortex, you must provide accurate parameters so that you can select a vortex flowmeter with a suitable caliber. If it is true that the diameter of the vortex street and the pipe cannot be matched, it is recommended to use a reduced diameter method to solve the problem.2. Flow fluctuations. Some customers have reported that the flowmeter fluctuates during measurement. First of all, when installing the vortex flowmeter, the front and rear straight pipes must be ensured. The straight pipe section of the first 10D and the rear of 5D can ensure the stability of the flow measurement.3. Factors in the direction of parameter setting: Because of parameter errors, the appearance indication is wrong. The parameter error makes the second appearance full-scale frequency calculation error. The full-scale frequency is similar and the indication is forbidden for a long time. The full-scale frequency made the indication shake in a wide range and could not be read, and the inconsistency of the parameters on the material affected the final determination of the parameters. Finally, the parameters were determined by comparison with each other through the re-calibration connection, and this question was solved.4. The influence of the accumulation of the vortex generator on the upstream surface of the vortex flowmeter. If there are viscous particles in the measured fluid, they may gradually accumulate on the upstream surface of the vortex generator, causing the shape and scale of the vortex generator to change slightly, so The flow coefficient also changes accordingly, so attention should be paid to sorting out in use.5. The influence of temperature and pressure on measurement is especially important when steaming. Steam is divided into superheated steam and saturated steam. Different temperature and pressure have different density of steam. Therefore, when measuring, it is recommended to equip temperature and pressure transmitters.
Post time: 21-09-21