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Daily maintenance methods for turbine flowmeters

2020-02-28 View Original

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  The turbine flowmeter sensor can measure the instantaneous flow rate and the total cumulative volume of a liquid, as well as enable quantitative control of the liquid. Sensors feature high precision, long service life, and simple operation and maintenance. They are widely used in industries such as factories, oil fields, chemicals, metallurgy, and papermaking, and are ideal instruments for flow measurement and energy conservation. How should users maintain turbine flowmeters? The following outlines the routine maintenance methods for turbine flowmeters. I. Solutions for no flow display on the flow meter: (1) First, check whether there are any issues with the wiring, such as loose signal wires or broken connections. (2) Separate the sensor from the signal amplifier, connect the signal amplifier to the instrument, and move an iron object back and forth at a distance of 2–3 mm from the bottom of the amplifier where the signal is taken. If the instrument displays a reading, it indicates that there is no problem with the display section. Please remove the flow sensor from the pipeline and check whether the impeller of the turbine flowmeter is tangled or damaged. II. Large fluctuations in flow rate The reasons for large fluctuations in flow rate can be considered from the following aspects: 1. Presence of interference – There may be sources of interference such as motors, frequency converters, or high-voltage devices near the flow meter. Solution: Ground the flow meter instrument, or add a filtering capacitor. If it cannot be resolved, one should stay away from the source of interference. 2. Is the water flow pulsating? (1) Generally, when raw materials are pumped, if the installation location of the flow meter is close to the pump, pulsating flow is likely to occur, resulting in significant fluctuations in flow rate. In such cases, the solution is to increase the distance of the straight pipe between the pump and the flow meter in order to stabilize the flow rate. (2) The turbine flowmeter is installed too close to a valve or elbow, causing flow fluctuations as the material passes through those components. At this time, one should stay away from valves and elbows to ensure a certain length of straight pipe section in front of and behind. III. The flow meter shows a relatively large error. (1) First, check whether the coefficient of the flow sensor, namely the K value, and other parameters of the instrument are set correctly. (2) If the customer has the means, use an electronic scale for actual calibration. IV. The flow meter indicates a low flow rate, while the actual flow rate is relatively high. Generally, the cause of this problem is that the impeller of the turbine flow meter does not rotate smoothly or the blades are broken. Remove the flow meter from the pipeline and check whether it is tangled or damaged. For more information, please visit the company’s official website at http://www.yb1518.com/. Please keep this link when reproducing the content! http://www.yb1518.com/UploadFiles/20101111113351160.jpg

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