Electromagnetic flow meter scale output do not tally with the actual zero shake, unstable

Abstract: the electromagnetic flow meter scale output do not tally with the actual zero shake, unstable information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. In the gasification device using many sets of electromagnetic flowmeter, gasification unit commissioning operation encountered during the period of failure are as follows: 1, traffic signal suddenly drop or no order process operating personnel reflect, grey water flows from the circulating ash water cooler suddenly under flow value. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the electromagnetic flow meter scale output do not tally with the actual zero shake, unstable article details. In the gasification device using many sets of electromagnetic flowmeter, gasification unit commissioning operation encountered during the period of failure are as follows: 1, traffic signal suddenly down or no order process operators, grey water flows from the circulating ash water cooler flow value suddenly drops, in accordance with the instrument maintenance experience for many years, judgment, appear this kind of situation is the main reason of the insulation deterioration or between electrodes were short circuit, causing signal is sent out. After carefully checked, found that the signal socket is corrosion, then clean with clear water and drying, back to normal after loading. Of course, in addition to the above reasons, it is also possible that measure dirt deposited in pipe wall measuring pipe lining was damaged, specific processing specific reasons. 2, the output signal when rock instrumentation personnel inspection found that the electromagnetic flow meter output signal shake, check be no fluctuations or pulsating flow to full pipe and the pipe under the condition of the liquid, after careful examination, electromagnetic flowmeter itself trouble-free, found a equipment maintenance personnel are not welded joint, judged to be produced in electromagnetic interference caused by electric welding machine to work, indicating the flowmeter are normal after away from electromagnetic interference. 3, zero unstable process when parking, strong mortar flowmeter zero point is not stable, measured by the inspection found that the table of the pipeline with dirt deposition and adhesion on the inner wall of the measuring tube, which cause a change in the zero point of the flowmeter, remove the stolen goods near electrode and electrode, dirt, find some changes, or zero use bt200 to zero, this showed normal. A zero, of course, in addition to the above analysis of the reasons for the unsteady also may be the following four reasons: pipe is not filled with liquid or there are air bubbles in the liquid; Pipe whether there is leakage; No outside the influence of electromagnetic interference; 4, measured values do not tally with the actual values in the test liquid in the pipeline has been full of sensor and the stillness of the cases, with bt200 set-up to the table after the zero point, measured value and the actual value and error, after careful examination revealed find converter set error range, reset the conform to the table after the correct range of indication is normal, the reasons of the discrepancy may also have the following several aspects: inappropriate sensor installation location, under the pipe or bubbles in the liquid to be tested, this kind of fault is mainly network engineering design, and related equipment is not perfect cause; The signal cable insulation ability. First the scene and the master control room inter-school confirm the cable connection is correct, then check whether terminals or cable shall be affected with damp be affected with damp, led to the decrease of the cable insulation ability; Sensors upstream flow conditions do not conform to requirements. Upstream flow sensor is often restricted by the installation space, does not conform to specified requirements, such as close to produce turbulence choke a not enough long straight section, these are introducing the factors influencing the measurement accuracy, measurement of tube wall is deposition layer or wall wear, thereby change the circulation area, affect the measured values; The sensor electrode resistance changes or electrode insulation. This failure is often terminal rainwater into making of be affected with damp be affected with damp. Ruled out the moisture can restore insulation. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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