Vortex flowmeters are simple to produce and cost-effective. They have been used by many customers. The technical Xiaobian of Shunda Flowmeter has been working on vortex flowmeters for many years and has summarized its common faults and treatment methods for your reference:
1. After the power is turned on, no secondary instrument is displayed
Analysis of the reasons for the power supply wiring error or power disconnection; wiring voltage greater than 220V, electric furnace burnout; supply voltage and the instrument requires the supply voltage does not match; sensor failure or amplifier board failure; the road is too small or no flow in the pipeline. The solution is to check the wiring and correct the wiring; if it is damaged, find the damaged parts, replace the original parts; supply the power supply as required; replace the faulty parts of the secondary meter; adjust the flow of the pipeline.
2. Signal output when there is no flow
Analysis of Causes An interference signal is introduced into the shield of the instrument lead or poor grounding; there is interference with strong electrical equipment or power lines around the instrument; the pipeline is strongly shaken. The solution is to strengthen the lead shielding to ensure that the line is well grounded; to keep the meter away from sources of interference; to jump high to trigger levels or to reduce shocks.
3. Indication error deviation is too large and repeatability is too large
The reason is that the vortex of the primary component is damaged; the lengths of the upstream and downstream straight sections are not enough; the instrument constant K is only set incorrectly; the probe is heavily contaminated; the fluid disturbance in the pipeline is too large. The solution is to replace the vortex generator; change the installation location; recalibrate the meter to obtain the correct meter constant K; clean the probe; replace the installation site and increase the inlet pressure.
4 flow is not accurate, and the process parameters vary widely
The reason analysis was that the process parameters were entered incorrectly; the instrument range did not meet the actual flow requirements. The solution is: correctly enter the instrument parameters; adjust the process or select the instrument that fits the actual flow range.
5. Remote signal output is abnormal
The reason analysis is that if it is a frequency or pulse signal output, the receiving circuit is compatible with the output circuit; if it is (4 ~ 20) mA current output, the flow setting range does not correspond to the output current. The solution is an external electrical component (such as a resistor in series with a certain resistance) to make the output and input circuits compatible; the parameter settings for flow upper and lower limit values ​​correspond to 4mA and 20mA.
The above is an introduction to the common faults and treatment methods of vortex flowmeters. We hope that we can provide them with help. If you have any other questions or needs related to the flowmeter, you can contact Shunda Flowmeter manufacturers. We will be happy to help you. service.
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