Electromagnetic flow meter scale special detection method

Abstract: the special test method of electromagnetic flow meter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Electromagnetic flowmeter is widely used in petroleum, chemical, metallurgical, textile, food, pharmaceutical, paper making industries and environmental protection, municipal administration, water conservancy construction and other fields. Sensor is the main component of: measuring tube, electrode, excitation coil, magnetic yoke iron core and shell. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a special electromagnetic flowmeter scale test method of the article details. Electromagnetic flowmeter is widely used in petroleum, chemical, metallurgical, textile, food, pharmaceutical, paper making industries and environmental protection, municipal administration, water conservancy construction and other fields. Sensor is the main component of: measuring tube, electrode, excitation coil, magnetic yoke iron core and shell. Products are mainly used to measure volume flow of conducting liquid and slurry in the closed pipeline, including acid, alkali, salt and other corrosive liquids. Electromagnetic flowmeter special detection: the determination of 1, signal cable interference signal cable from electrostatic induction and electromagnetic induction interference can make the electromagnetic flowmeter zero change. To determine whether changes in zero due to the effect of electric potential signal cable interference, to determine the influence degree of the interference range and the electromagnetic flowmeter. 2, electrode polarization voltage measurement of polarization voltage between electrodes and liquid will help to judge whether the fault of the unstable zero or output shaking caused by electrode is covered by pollution or. With 2 v dc digital multimeter, respectively measure the polarization between the two electrodes and ground voltage ( Electromagnetic flowmeter can not power, power measurement) 。 If two measured values close to nearly equal, electrode not contaminated or overwritten. Polarization voltage size depends on the electrode materials & other; Electrode potential & throughout; And the properties of the liquid measurements may be between a few mV to a few hundred mV. Because, in fact, in the operation of the two electrodes contamination situation can't be exactly the same symmetry, then the voltage on the electrode formed asymmetric common-mode voltage. Asymmetry of the common-mode voltage becomes differential mode signal, zero offset. 3, pipeline stray current flow to the discriminant sometimes for pipeline stray interference sources in the flow sensor of the upstream or downstream, in order to narrow your search, try to reduce or eliminate stray current interference effects. 4, electrode contact resistance measuring electrode spoon liquid contact resistance, can be not discharged from the pipe flow sensor and indirect assessment of electrode and lining layer surface conditions generally, help to analysis the cause of the problem. 5, determination of presence of grounding potential electromagnetic flow juice during normal use, such as sensors, near motor ( Force) State changes ( Such as leakage) , grounding potential changes caused by zero change. Check whether have the influence, the converter can be work terminal short circuit, grounding C terminal and protection of G to zero ( Or instruction value) Changes in judgment for ground potential. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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