How to install the plug-in electromagnetic flow meter correctly

Abstract: The information on how to install the plug-in electromagnetic flowmeter correctly is provided by the excellent flowmeter and flowmeter manufacturers. 1. The straight pipe section requires 3D5D (D is the pipe diameter), all valve types, the elbow is in the front, after you install the instrument to confirm that there is a straight pipe enough, it is in line with the general principle for installing the flow patterndistribution pipe as much as possible tea is Inevitably, different. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to install the plug-in electromagnetic flowmeter correctly. 1. The straight pipe section requires 3D5D (D is the pipe diameter), all valve types, the elbow is in the front, after you install the instrument to confirm that there is a straight pipe enough, it is in line with the general principle for installing the flow patterndistribution pipe as much as possible tea is Inevitably, reducers, flow meters, should be placed before the pipeline, various valves 10D, 90°General requirements for elbows, straight tee 5D diameter pipes. 2. Installation position and direction The vertical installation of the sensor is ideal, but attention must be paid to the fluid flow. The electrode must be installed horizontally on the horizontal axis. As an electrode with a vertical axis, the gas is above the electrode, simple and dirt affects the contact electrode, the electrode includes the following scale, which is easy to set the error caused by fluid, ground, etc. The location is not liquid, is not at any time, the measuring tube is at zero. To prevent the illusion caused by the program, you need to select the measurement fluid-filled catheter. The design of the pipeline, it is necessary to ensure that you don't not produce bubbles, liquid flowmeter air bubbles, therefore, to prevent the effect of the throttle valve reducing the pressure in the pipeline, the upstream valve you need to install it. To avoid measurement errors around sensors, electromagnetic interference (eg, high-power motors, transformers, etc.) is not possible. 3. Grounding In order to measure the fluid circuit potential of the electromagnetic flowmeter as a zero-potential determination, most of the chances, the precession vortex flowmeter electrically connects the output signal of the sensor and the liquid measurement of the measured fluid through point grounding, and the grounding of the converter The midpoint of the potential input. In addition, the output signal of the electromagnetic flowmeter sensor is only very small at the full scale of the flow rate of 2.5 ~ 8.0mV, very small, the output is a slight disturbance, only a few millivolts, outside, affecting the accuracy of the meter and the world you. In order to reduce electrical interference to ensure the normal operation of the electromagnetic flowmeter, the electromagnetic flowmeter has a good earth [1]. Ground electromagnetic flowmeter, you should pay attention to the following points. (1) The measurement of the tube sensor, housing, shielded wire, converter and secondary instrument must be grounded [1]. (2) The sensor, must be grounded, with a separate converter, absolute, resistance connected to the ground of the motor, process piping, must be less than or equal to 10Ω[1]. (3) In the grounding of the converter in this field, the ground of the secondary side above the ground of the multi-terminal of the shielded equipment control room will not be necessary to avoid the possibility of introducing various interference [1]. (4) The sensor is installed in a metal pipe, and the sensor ground wire can be connected, depending on the manufacturer's requirements, to form a reliable ground loop on the side of the pipe flange (see Figure 1). The point of the ground equipment, it must be a separate ground, the ground wire and other electrical equipment connected together is not allowed. Fourth, piping (1) In order to eliminate flange beating and fracture, the misalignment or inclination of the pipeline should be corrected when installing the flowmeter, and the deviation of the installation distance between the plastic pipe float flowmeter and the two flanges should be corrected. If it is installed on a long overhead pipeline, there should be a support for the pipeline between the two flanges of the flowmeter to prevent the pipeline vibration from causing stress. (2) Eliminate foreign objects such as welding slag in the pipeline. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to install the plug-in electromagnetic flow meter correctly'
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