Electromagnetic flow meter As a high-precision, high-reliability flow measurement instrument, it has been widely used in industrial production. However, in order to ensure the accuracy and stability of its measurement, a series of matters and key points need to be noted during use. As a well-known Electromagnetic flow meter manufacturer eletta, we will reveal these key factors in detail for you.

I. Preparation work before installation

Before installing the electromagnetic flow meter, it is necessary to fully understand and evaluate the process pipeline on site. Ensure that there are no sundries, welding slag, etc. in the pipeline to avoid damaging the sensor of the flow meter. At the same time, ensure that the straight pipe section length of the pipeline meets the installation requirements of the electromagnetic flow meter. Generally speaking, the upstream straight pipe section length should be no less than 5 times the pipe diameter, and the downstream straight pipe section length should be no less than 2 times the pipe diameter.

Choosing the right installation location is also crucial. Avoid installing the electromagnetic flow meter in areas prone to vibration, strong electromagnetic field interference, or drastic temperature changes. In addition, it is necessary to consider the convenience of future maintenance and repair, and reserve sufficient operating space.

II. Correct installation method

The installation methods of electromagnetic flow meters usually include horizontal installation and vertical installation. During horizontal installation, the electrodes should be kept horizontal to prevent bubbles from accumulating near the electrodes and affecting the measurement accuracy. During vertical installation, the fluid should flow from bottom to top to ensure measurement accuracy.

During installation, ensure that the flow meter is tightly connected to the pipeline without leakage. For flanged electromagnetic flow meters, pay attention to the selection of appropriate materials for the gaskets between the flanges to prevent them from affecting the measurement. At the same time, install the sensor and converter correctly according to the manufacturer's installation instructions, and ensure that the cable connection between the two is firm and reliable.

III. Grounding and shielding

Good grounding and shielding are important conditions to ensure the normal operation of the electromagnetic flow meter. Grounding can effectively eliminate the interference of external electromagnetic fields and improve the stability and accuracy of measurement. The grounding terminal of the electromagnetic flow meter should be reliably connected to the factory's grounding system, and the grounding resistance should be less than 4 ohms.

In addition, in order to reduce signal interference, it is also necessary to shield the cable. The shield layer should be grounded at one end to avoid forming a grounding loop to generate interference current. During wiring, the signal cable should be separated from the power cable to avoid parallel wiring to reduce electromagnetic coupling interference.

IV. Parameter setting and calibration

Before using the electromagnetic flow meter, it is necessary to correctly set the parameters of the flow meter according to the actual measured medium and process parameters. For example, parameters such as the conductivity, temperature, and pressure of the measured medium, as well as the range and output signal type of the flow meter.

In order to ensure the accuracy of the measurement, the electromagnetic flow meter needs to be calibrated after installation. Calibration can use the actual flow calibration method or the simulated signal calibration method. During the calibration process, follow the operating procedures strictly to ensure the accuracy and reliability of the calibration results.

V. Daily maintenance and maintenance

Regular maintenance and maintenance of the electromagnetic flow meter can extend its service life and improve measurement accuracy. Regularly check the working status of the flow meter's sensor and converter, and check for any abnormal alarm information. At the same time, clean the dirt and debris on the surface of the sensor to prevent it from affecting the measurement accuracy.

For electromagnetic flow meters that are not used for a long time, the measured medium inside should be drained, and moisture-proof and dust-proof measures should be taken for proper storage.

VI. Troubleshooting

During use, if the electromagnetic flow meter malfunctions, it should be checked and handled in time. Common faults include abnormal measured values, signal loss, and unstable output. For these faults, you can first check whether the power supply is normal, whether the cable connection is loose, and whether the grounding is good. If the problem still exists, you can contact the manufacturer's technical support personnel for further diagnosis and repair.

In summary, the correct use of electromagnetic flow meters requires sufficient preparation work before installation, choosing the appropriate installation method and location, ensuring good grounding and shielding, correctly setting parameters and calibration, and performing daily maintenance and maintenance. Only in this way can the performance advantages of the electromagnetic flow meter be fully utilized to provide accurate and reliable flow measurement data for industrial production.

As an eletta brand electromagnetic flow meter manufacturer we are always committed to providing customers with high-quality products and professional technical services. If you encounter any problems during the use of the electromagnetic flow meter, please feel free to contact us, and we will be happy to answer your questions and provide assistance.