What is the problem with the steam vortex flowmeter?
(1) Installation problems. The main reason is that the length of the straight pipe in front of the
sensor is not enough, which affects the measurement accuracy. The reason for this is mainly related to the problem 1.
(2) The secondary instrument is faulty. There are many faults in this part, including: when the instrument board is disconnected, the range setting has individual bit display bad, and the K coefficient setting has individual bit display bad, which makes it impossible to determine the range setting and K factor setting. Part of the reason is mainly related to questions 1, 2. The problem is solved by fixing the corresponding fault.
(3) Problems in selection. Some vortex
sensors are selected on the caliber selection or after the design and selection, because the process conditions are changed, so that the selection is large—the actual selection should be as small as possible to improve the measurement accuracy. The reason for this is mainly the same. Questions 1, 3, and 6 are related. For example, a vortex pipeline is designed for use by several equipment. As some of the equipment is not used, the actual actual flow is reduced. The actual design results in too large an original design, which is equivalent to an increase in measurable flow. The lower limit, when the process pipe is small, the indication is not guaranteed, and it can be used when the flow is large, because it is too difficult to re-engineer (sometimes. The change of process conditions is only temporary). The re-tuning of the para
meters can be combined to improve the indication accuracy.
(4) Reasons for para
meter setting direction. The instrument is incorrectly indicated due to a para
meter error. The para
meter error makes the secondary instrument full-scale frequency calculation error, and the reason for this is mainly related to questions 1, 3. The full-scale frequency is similar, which indicates that the long-term inaccuracy is indicated. The full-scale frequency of the actual full-scale frequency and large-dry calculation indicates that the range is fluctuating and cannot be read. The inconsistency of the para
meters on the data affects the final determination of the para
meters, and finally passes. Recalibration combined with mutual comparison to determine the para
meters solves this problem.
(5) Four-way line connection problem. On the surface of some circuits, the line connection is very good. Careful inspection, some connectors are actually loose and the circuit is interrupted. Some connectors are tightly connected, but the fastening screws are fastened to the wire sheath due to the secondary line problem, which also makes the circuit Interruption, this part of the reason is mainly related to question 2. Solved the corresponding line problem, and the existing problems are solved accordingly.