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Grounding requirements for electromagnetic flowmeters: 1. Based on the working principle of electromagnetic flowmeters and the circuit of the flow sensing signal current, the grounding terminals of the sensor and converter must be at the same potential as the medium being measured. 2. Grounding. Taking the ground as zero potential reduces external interference. Under normal circumstances, process pipes are metal pipes that are grounded by nature, so this requirement is easily met. However, in situations with significant interference from external electromagnetic fields, an additional grounding system should be installed for the electromagnetic flowmeter. The grounding wire should be made of multi-strand copper wire with a cross-sectional area of more than 5 mm2. The grounding wire of the sensor must not be connected to the common ground wire of the motor or other equipment, in order to avoid the effects of leakage current. The ground resistance should be less than 10Ω. a. The sensor is installed on a metal pipe (the inner wall of the metal pipe has no insulating coating). Tongchuang Instruments: b. The sensors are installed on plastic pipes or pipes with insulating linings; at both ends of the sensors, grounding rings, grounding flanges, or short tubes equipped with grounding electrodes should be installed. Only by short-circuiting the medium flowing inside the pipe to the ground, so that it has a zero potential, can an electromagnetic flowmeter function properly. Price of electromagnetic flowmeters: As a manufacturer of flowmeters, it is necessary to account for the cost of the flowmeter body material, the cost of the lining for the body, the cost of the electrodes, the cost of the display unit, labor costs, packaging costs, and transportation costs.