Precession vortex flowmeters are primarily used to measure the flow of gases and liquids. It can actively and accurately check the temperature, pressure, and flow values ​​of the media, and directly show the cumulative volume of the media in the normal state. It can display various parameters on the spot and can transmit a variety of signals far. It selects advanced skills, realizes intelligent processing of multiple functions and uses dual sensors, new signal processing amplifiers and common filtering skills, effectively eliminating the disturbing signals generated by pressure oscillation and pipeline oscillation, and greatly improving the flowmeter. The ability to resist turbulence makes it superbly stable and accurate.
Fault scene and processing 2.1 No output signal factor: No media or flow rate below the lower limit of the pipeline; Check whether the power and output lines are connected correctly; Check whether the preamplifier circuit is damaged; Check if the input amplifier circuit is damaged.
Treatment methods: to improve the media flow to make it satisfied with the flow request; accurate wiring; replace the preamplifier; replace the output amplifier circuit damaged components.
2.2 Flow-rate flowmeter has output factors: flowmeter bad grounding or strong electric ground and other ground disturbances; amplifier sensitivity is too high or self-excited; piezoelectric sensor and preamplifier bad touch or open circuit; power supply instability , poor filtering and other electrical interference. 〔2〕
Treatment methods: Accurately connect the ground wire, eliminate interference; replace the preamplifier; check the circuit, make it normal; repair or replace the power supply, remove the disturbance.
2.3 The flowmeter shows instability: the amplifier sensitivity is too high or too low, there is a phenomenon of leakage pulse; piezoelectric sensor depth azimuth adjustment is inaccurate; device flowmeter has unstable oscillation or electrical interference; bad grounding; device orientation is not Accurate, before the flow meter turns. Treatment method: replace the preamplifier; readjust the depth of the piezoelectric sensor; eliminate unstable oscillations and disturbances; check the grounding circuit to make it normal; change the orientation of the device.
2.4 Accumulation of flow indication and actual flow does not meet the following factors: flow meter appearance factor input is not normal; user's normal flow is lower or higher than the normal flow range of the selected flow meter; flow meter itself is poor; fluid cavitation scene; pipeline tired The No. is not in the range of 2×104 to 7×106.
Treatment method: From scratch, set the adjustment with the function button to make it accurate; Adjust the flow of the pipe to make it normal; From the head calibration; The pressure of the falling fluid is lost to prevent the occurrence of air bubbles.
2.5 Switch to reveal error factors: Check the wiring is not accurate; view the toggle button touch is not outstanding; view the display screen wiring is not outstanding; admit that the display screen is not.
Treatment methods: accurate wiring; replacement button; accurate access to the screen display line; replace the display screen.
3 Conclusion There are many factors that lead to swirling vortex flowmeter problems. It is difficult to comprehensively analyze and analyze. This article only clarifies the precession vortex flowmeter from the above several common problems, analyzes the factors and the process of the flowmeter, hoping to help everyone use it very well.
Fault scene and processing 2.1 No output signal factor: No media or flow rate below the lower limit of the pipeline; Check whether the power and output lines are connected correctly; Check whether the preamplifier circuit is damaged; Check if the input amplifier circuit is damaged.
Treatment methods: to improve the media flow to make it satisfied with the flow request; accurate wiring; replace the preamplifier; replace the output amplifier circuit damaged components.
2.2 Flow-rate flowmeter has output factors: flowmeter bad grounding or strong electric ground and other ground disturbances; amplifier sensitivity is too high or self-excited; piezoelectric sensor and preamplifier bad touch or open circuit; power supply instability , poor filtering and other electrical interference. 〔2〕
Treatment methods: Accurately connect the ground wire, eliminate interference; replace the preamplifier; check the circuit, make it normal; repair or replace the power supply, remove the disturbance.
2.3 The flowmeter shows instability: the amplifier sensitivity is too high or too low, there is a phenomenon of leakage pulse; piezoelectric sensor depth azimuth adjustment is inaccurate; device flowmeter has unstable oscillation or electrical interference; bad grounding; device orientation is not Accurate, before the flow meter turns. Treatment method: replace the preamplifier; readjust the depth of the piezoelectric sensor; eliminate unstable oscillations and disturbances; check the grounding circuit to make it normal; change the orientation of the device.
2.4 Accumulation of flow indication and actual flow does not meet the following factors: flow meter appearance factor input is not normal; user's normal flow is lower or higher than the normal flow range of the selected flow meter; flow meter itself is poor; fluid cavitation scene; pipeline tired The No. is not in the range of 2×104 to 7×106.
Treatment method: From scratch, set the adjustment with the function button to make it accurate; Adjust the flow of the pipe to make it normal; From the head calibration; The pressure of the falling fluid is lost to prevent the occurrence of air bubbles.
2.5 Switch to reveal error factors: Check the wiring is not accurate; view the toggle button touch is not outstanding; view the display screen wiring is not outstanding; admit that the display screen is not.
Treatment methods: accurate wiring; replacement button; accurate access to the screen display line; replace the display screen.
3 Conclusion There are many factors that lead to swirling vortex flowmeter problems. It is difficult to comprehensively analyze and analyze. This article only clarifies the precession vortex flowmeter from the above several common problems, analyzes the factors and the process of the flowmeter, hoping to help everyone use it very well.
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