Intelligent electromagnetic flowmeter is based on a standard manufacturing system and development, its advanced design concepts to ensure the high precision and high reliability of the product, compared with the old electromagnetic flowmeter, it has high measurement precision, high reliability, good stability, complete function, long life and other advantages. In the process of the use of any instrument, can appear early late debugging to normal operation and appear problem, split type electromagnetic flowmeter will also appear such problem, then the causes of flowmeter measurement problems in the operation of what? 1, install and use conditions change. Around is often done in the installation and debugging, and no interference sources affect the debugging process, and the interference source output signal at runtime to fluctuate, so in the installation and debugging phase will these factors into consideration, lest cause later in the process of using all kinds of problems. 2, lightning strike. From numerous instrument to use the site, not only electromagnetic flowmeter will appear in the event of a lightning when measuring error, other instruments could signal instability. So we need to find a lightning strike accordingly from which way the effects on the flow meter, can be better to take measures to avoid it. The study found that lightning strike can cause instantaneous high voltage and surge current in a circuit, and damage of electromagnetic flowmeter. The damage caused by way of split type flowmeter mainly through sensors and switches between traffic signal, the power cord, excitation lines. So in the split type flowmeter installation this situation need to be taken into account. 3, flow sensor wall adhesion layer. When using electromagnetic flowmeter in flow measurement, if measured medium containing suspended particles or other impurities, the produced on the inner wall of the sensors attached may affect the result of the flow measurement. If the adhesive layer conductivity and measuring the electrical conductivity of the liquid, the flow measurement of the adhesive layer produced stealth obstruction, and will not have too big impact to the normal flow meter output signal; Adhesive layer conductivity is higher, may cause short-circuit between electrodes; If adhesion layer insulation is good, will thus cause measurement circuit disconnection. Therefore, we in the installation and debugging stage of electromagnetic flowmeter, will need to consider the problems of late may be in use process, as soon as possible to make prevention to avoid late flow measurement problem.
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