Technical standards for integrated electromagnetic flow meter manufacturers

Abstract: The technical standard information of integrated electromagnetic flow meter manufacturers is provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. Two-way measurement system of electromagnetic flowmeter, close the valve on the pipeline, use the GS8 calibration instrument to detect the output current of the integrated electromagnetic flowmeter converter, check the zero point of the integrated electromagnetic flowmeter under the condition of no liquid flow, when the The fixed flow is . More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the technical standard article details of integrated electromagnetic flowmeter manufacturers. Two-way measurement system of electromagnetic flowmeter, close the valve on the pipeline, use the GS8 calibration instrument to detect the output current of the integrated electromagnetic flowmeter converter, check the zero point of the integrated electromagnetic flowmeter under the condition of no liquid flow, when the When the constant flow is 0, the output current of the flowmeter should be: 4.00mA; remember that it is from the case of full liquid. The forward flow can be measured. When 100% flow is given, the output current should be: 20.00mA. The error of the output current value should be guaranteed to be around 1.5%. reverse traffic. Test Excitation Current Value Converter Terminals“7”and“8”Between, the positive and negative values ​​of the excitation current should be within the range of 137 (5%) mA. Special attention should be paid to the influence of the external environment of the integrated electromagnetic flowmeter on the test results in the detection: if the excitation line and the signal line are laid in the same pipeline, the excitation line and the signal line are parallel to the high-voltage cable, and there are large transformers or motors around, etc. The factors are used to observe whether the electromagnetic flowmeter in operation has sudden changes or fluctuations, and roughly judge whether the integrated electromagnetic flowmeter is disturbed by electromagnetic waves or other stray waves or whether there are air bubbles in the pipeline. The influence of the operation accuracy of the electromagnetic flowmeter is evaluated. This evaluation mainly uses visual inspection methods, such as whether there is a deposition layer attached to the electrode surface and the lining layer, and whether the deposition layer is conductive or insulating. Production technology and high-quality materials, measuring the excitation coil to ground (measuring line number“1”and“7”or“8”) insulation resistance to judge whether the integrated electromagnetic flowmeter sensor is damp, measure the contact resistance between the electrode and the liquid, and indirectly evaluate the condition of the electrode and the surface of the lining layer in the component. This resistor value should be greater than 20 megohms. Measuring the resistance value of the excitation coil is mainly to determine whether the excitation coil has a short circuit between turns. If the resistance value is the same as the factory record, then we consider the coil to be good, and then indirectly evaluate the integrated electromagnetic flowmeter. The resistance value between them It should be 1 kiloohm to 1 megohm, and the wire size“1”and“2”and“1”and“3”The resistor values ​​must be symmetrical. The magnetic field strength of the sensor has not changed. The resistance value of the excitation coil should generally be 30 ohms to 170 ohms. To ensure that the performance of the product remains stable over a long period of time. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Technical Standards for Integrated Electromagnetic Flow Meter Manufacturers'

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