Grounding and installation requirements for the central control electromagnetic flow meter

Abstract: The information on the grounding and installation requirements of the electromagnetic flowmeter meter of the central control is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Abstract: In the installation of electromagnetic flowmeter, it should be noted that the sensor must be grounded separately, which requires the grounding ring to be reliably grounded and the grounding resistance to be less than 10, otherwise it may cause no indication or alarm. Some people are often grounded irregularly, leading to later appearances. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the details of the grounding and installation requirements of the central control electromagnetic flowmeter. In the installation of electromagnetic flowmeter, it should be noted that the sensor must be grounded separately, which requires the grounding ring to be reliably grounded and the grounding resistance to be less than 10Ω, otherwise it may cause no indication or alarm. Some people often have irregular grounding, which leads to some failures that cannot be detected in the future. Zhongkong Group has described some points of attention on the installation of electromagnetic flowmeters for readers' reference. In the installation of electromagnetic flowmeter, it should be noted that the sensor must be grounded separately, which requires the grounding ring to be reliably grounded and the grounding resistance to be less than 10Ω, otherwise it may cause no indication or alarm. This point should be paid special attention to when installing on site, and the grounding ring and the protective gasket should not be confused. In principle, the separate type of electromagnetic flowmeter should be grounded on the sensor side, and the grounding of the converter should be at the same grounding point. If the sensor is installed on a pipeline with cathodic corrosion protection, in addition to grounding the sensor and the grounding ring together, a thicker copper wire (16mm2) should be used to bypass the two connecting flanges of the sensor across the pipeline, so that the cathodic protection current is connected to the sensor. isolation. Requirements for the installation location of the central control electromagnetic flowmeter In the use environment, attention should be paid to avoid external electromagnetic interference, especially to avoid the interference of power frequency electromagnetic fields. Some on-site high-power motors, large transformers and other equipment will interfere with the measurement of the flowmeter, resulting in false indications. In addition, it should be noted that the signal cable attached to the instrument (or the specified model) by the manufacturer must be used, because the distance between the converter and the sensor is limited by the conductivity of the measured medium and the type of signal cable, that is, the distributed capacitance of the cable, the wire Cross-section and number of shielding layers, etc. Usually single-layer shielded cable is used for industrial water or acid and alkali liquid, and the transmission distance is 100m; while for liquid with low conductivity and long transmission distance, 3-layer shielded cable is required as required. In order to avoid interfering with the signal, the signal cable must be worn in the grounding protection steel pipe alone, and the signal cable and the power line cannot be installed in the same steel pipe. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Central Control Electromagnetic Flow Meter Grounding and Installation Requirements'
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