Electromagnetic flowmeter measurement scale in the steel industry cooling water alarm by mistake

Abstract: the electromagnetic flowmeter measurement scale in the steel industry cooling water false alarm information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Electromagnetic flowmeter in the steel industry cooling water measurement error alarm, this is what want to? Through long-term practical experience, we found that the electromagnetic flowmeter false alarms are mostly caused by the bubble brush electrode. How to solve this problem? To be in the first place. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the electromagnetic flowmeter measurement scale in the steel industry cooling water false-negatives article details. Electromagnetic flowmeter in the steel industry cooling water measurement error alarm, this is what want to? Through long-term practical experience, we found that the electromagnetic flowmeter false alarms are mostly caused by the bubble brush electrode. How to solve this problem? First of all to meet the requirements of meter length of straight pipe upstream from the installation, standard instrument installation, select the installation place away from direct heat, reasonable use of pipe flow rate, choosing high degree of finish of PFA fluorine plastic lining and high purity alumina ceramic tube. These measures will help to prevent or reduce the vortex and gas separation. That is to say, to improve manufacturing process, the improvement of sensor using the instrument environment and installation condition, adopt measures, such as instrument equipped with exhaust valve upstream could avoid the happening of the problem. Increase the damping time instrument can effectively solve the effect of the pulse type bubble noise, at the same time also brought the disadvantage of slow, namely when the real flow fluctuation, instrument response slowly. The sensitive control of cooling water system is a difficult problem. In order to solve this problem, the intelligent electromagnetic flowmeter can use software logic is bulky error processing method [ 5] 。 In appear this kind of failure, by adjusting the flow limit is not sensitive to time and changes in these two conditions is to determine changes in the flow, or bubble brush electrode. If not bubble grazed the noise of the electrode, the CPU according to the normal sampling, computing and digital filtering; If the judge is bubble noise, removal of the measured value, keep in front of the flow measurement value. So, during normal flow measurement damping time is 3 ~ 6 s. Only when a bubble noise, according to the length of the pulse width will not be sensitive time lengthen, system control of the time will be longer. Second, reasonably set the instrument damping time and function, can also solve a bubble noise measurement of false alarms. The timing of the damping is bubbling noise in according to the traffic signal pulse width is selected. General should take damping time for 3 ~ 5 times of the width of the bubble pulse noise. Such as bubble noise pulse width of 10 s, damping time should be take 30 ~ 50 s. Specific choice according to the requirements of control accuracy, three times the pulse width control error in 5%, five times the pulse width control accuracy is higher than 1%. When we choose reasonable electromagnetic flow converter with gross error suppression function & other; Rate limit & throughout; And & other Is not sensitive to the time value & throughout; , the converter can not only inhibit bubbles of false alarm caused by noise, and response speed in normal work instrument can still keep the time set by the damping value. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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