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The anti-corrosion type intelligent turbine turbine electromagnetic flowmeter adopts new technology. The use of constant current low-frequency three-value rectangular wave or dual-frequency rectangular wave excitation not only has the advantages of rectangular wave magnetic field, but also overcomes the shortcomings of sine wave magnetic field; it can also eliminate power supply voltage fluctuations, power frequency changes and changes in excitation coil impedance. Error; and has excellent zero-point stability and is not affected by the interference of fluid noise. Thereby it has the characteristics of high stability and high reliability. The measurement principle of the anticorrosive intelligent turbine electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. The anticorrosive intelligent turbine electromagnetic flowmeter consists of a sensor and a converter. The sensor is installed on the measuring pipeline. The converter can be combined with the sensor to be called a In the case where the converter is installed within 30 meters or 100 meters from the sensor, the body-type turbine electromagnetic flowmeter is connected by a shielded cable, which is called a split-type turbine electromagnetic flowmeter. The main components of the anticorrosive intelligent turbine electromagnetic flowmeter sensor are: measuring tube, electrode, excitation coil, iron core and yoke shell.
    The anti-corrosion intelligent turbine electromagnetic flowmeter is mainly used to measure the volume flow of conductive liquid and slurry in closed pipelines. Such as water, sewage, mud, paper pulp, various acids, alkalis, salt solutions, food slurries, etc., are widely used in petrochemicals, iron and steel metallurgy, water supply and drainage, water conservancy irrigation, water treatment, environmental protection sewage total control, papermaking, medicine, food The flow measurement and control of the production process in the industrial and agricultural sectors; suitable for the total measurement of conductive liquids.
Features:
1. Programmable frequency low-frequency rectangular wave excitation improves the stability of flow measurement and has low power loss;
2. Using 16-bit embedded microprocessor, fast calculation speed and high precision;
3. Fully digital processing, strong anti-interference ability, reliable measurement, high precision, flow measurement range up to 150:1;
4. Ultra-low EMI switching power supply, suitable for a wide range of power supply voltage, and good anti-EMC performance;
5. Full Chinese character menu operation, easy to use, simple to operate, easy to learn and understand;
6. High-definition backlit LCD display;
7. With two-way flow measurement, two-way total accumulation function, current and frequency have two-way output function;
8. There are three totalizers inside which can respectively display the forward cumulative amount, the reverse cumulative amount and the difference cumulative amount;
9. With RS485 or RS232 digital communication signal output
10. With conductivity measurement function, it can judge whether the sensor is empty or not;
11. The constant current excitation current has a large range, which can be used in conjunction with different companies and different types of turbine electromagnetic flow sensors;
12. With self-inspection and self-diagnosis functions;
13. Using SMD devices and surface mount (SMT) technology, the circuit reliability is high;
14. The internal design of the meter has a non-power-down clock, which can record 16 power-down times.
Selection of Anticorrosive Intelligent Turbine Electromagnetic Flowmeter
◆Confirm the measuring range
    For general industrial explosion-proof flow meters, the measured medium flow rate should be 2～4m/s. Under special circumstances, the minimum flow rate should not be less than 0.2m/s, and the maximum
Should not be greater than 8m/s. If the medium contains solid particles, the usual flow rate should be less than 3m/s to prevent excessive friction between the lining and the electrode; for viscous fluids,
The flow rate can be selected to be greater than 2m/s, and a larger flow rate helps to automatically eliminate the effect of the sticky substance attached to the electrode, which is beneficial to improve the measurement accuracy.
    Under the condition that the range Q has been determined, the size of the flowmeter diameter D can be determined according to the range of the above-mentioned flow rate V, and its value is calculated by the following formula:
    Q=π*3600D²V/4
    Q: Flow rate (m³/h) D: Pipe inner diameter V: Flow velocity (m/s)
    The range Q of the explosion-proof intelligent turbine electromagnetic flowmeter should be greater than the expected maximum flow value, and the normal flow value should be slightly greater than 50% of the flowmeter's full scale scale.