The electromagnetic flowmeter measurement principle is Faraday's law of electromagnetic induction. It is an instrument for measuring the flow of conductive fluid according to the electromotive force induced by the conductive fluid through the applied magnetic field. The main components of the sensor are: measuring tube, electrode, excitation coil, iron core and magnetic Yoke housing. The product is mainly used to measure the volume flow in conductive liquids and slurries in closed pipes, including highly corrosive liquids such as acids, bases and salts. HJ-LDG electromagnetic flowmeter is widely used in petroleum, chemical, metallurgy, textile, food, pharmaceutical, paper and other industries as well as environmental protection, municipal management, water conservancy construction and other fields.
Electromagnetic flowmeter converter installation specification:
1. The signal cable length between the converter and the sensor cannot be greater than 50M, and the signal cable must be sheathed with a galvanized pipe. If the galvanized pipe is in the air, the galvanized pipe should be grounded reliably with a grounding resistance of less than 10 ohms.
2. The power supply is 220v one-way AC, and an air switch is installed inside the instrument box. The arrester and the air switch are connected in parallel. The wire is connected from the air switch and then connected to a three-terminal socket.
3. The arrester is grounded. The length of the grounding wire of the arrester should not exceed 1M, and the multi-strand copper insulated wire with a cross-sectional area greater than 6MM. If there is no ground net nearby, a simple net should be made near the arrester. The method is as follows: three flat steels or angle steels with a length of 1.5M are used to drive into the ground in a regular triangle arrangement, and the flat steel bars are used to weld the three flat steels. In one of the corners, the bolts are welded, and then the grounding wire of the arrester is connected to the 220 VAC lightning grounding plane to install the panel.
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