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1. Wiring method of electromagnetic flowmeter
The wiring of electromagnetic flowmeter is divided into two parts, internal wiring and external wiring. The internal wiring generally consists of 5 wires, and the connection between the sensor and the conversion amplifier. XY，ACB， Two wires are connected to the magnetic coil, XY， Electrode wiring ACB, two are electrode wiring AB, and one is grounded C. External wiring is generally the power supply connection terminal. Two wires, signal output lines: six, usually two 4-20mA output lines, two RS232 communication lines, and two RS485 communication lines. There is also a grounding terminal wire on the cylinder. When purchasing and installing a product, it is generally easy to simply open the watch cover and follow the instructions for external wiring, which is not complicated. But if the pipeline is made of all plastic and non-conductive, proper grounding should be done to avoid inaccurate flow or drift. This Laughing Year Extended Information: The DC magnetic circuit is implemented using permanent magnets, which has the advantage of a relatively simple structure and less interference from AC magnetic fields. However, it is prone to polarize the electrolyte liquid inside the measuring tube, causing the positive electrode to be surrounded by negative ions and the negative electrode to be surrounded by positive ions, resulting in electrode polarization and an increase in internal resistance between the two electrodes, which seriously affects the normal operation of the instrument. When the diameter of the pipeline is large, the permanent magnet is also large, bulky, and uneconomical. Therefore, electromagnetic flow meters generally use alternating magnetic fields and are
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2. Wiring diagram of split type sewage electromagnetic flowmeter
The wiring of split type sewage electromagnetic flowmeter is divided into two parts: internal wiring and external wiring. The following is a detailed explanation: The internal wiring is the connection between the sensor and the conversion amplifier, with a total of 5 wires, as follows: Excitation coil wiring: 2 wires, marked as XY, used to provide current to the excitation coil and generate a stable magnetic field. Electrode wiring: 2 wires, labeled AB, used to collect induced electromotive force signals generated by fluid flow. Grounding wire: 1, marked as C, used to connect the sensor housing to the ground, ensuring equipment safety and reducing int