Electromagnetic Flowmeter Quick Installation Skills Tips
Changzhou Chengfeng Instrument Intelligent Electromagnetic Flowmeter is developed based on the standard manufacturing system. Its advanced design concept ensures the high precision and high reliability of the product. Compared with the old electromagnetic flowmeter, it has high measurement accuracy and reliability. Strong, stable, functional, long life and other advantages.
First, the installation of straight pipe requirements <br> <br> first noted as a load of the sensor itself can not support point, it can not support the next working channel, it should clamp the pipe load. In order to obtain normal measurement accuracy, the electromagnetic flow sensor must also have a straight pipe section of a certain length upstream, but its length is lower than that of most other flow meters. 90o elbow, T-tube, concentric reducer, and full-opening valve shall be 5 times the diameter (5D) of the straight pipe section from the sensor's inlet flange connection surface. Valves with different opening degrees shall require 10D; the downstream straight pipe segment shall be (2 ~ 3) D; but to prevent the butterfly valve plate protruding into the sensor measuring tube. The lengths of the upstream and downstream straight pipe sections proposed by various standards or verification regulations are also inconsistent and are summarized in Table 2. The requirements are higher than usual. This is due to the requirement to achieve the current class 0.5 accuracy meter.
Second, the installation of the sensor
1, as much as possible to avoid the negative pressure in the measuring tube;
2. When measuring the mixed phase fluid, select the place that will not cause phase separation; when measuring the two-component liquid, avoid installing in the downstream where the mixing is not uniform; when measuring the chemical reaction pipeline, install it in the downstream of the fully completed reaction section;
3, as much as possible to avoid high concentrations of corrosive gases in the surrounding environment;
4, as far as possible to avoid direct sunlight;
5, to avoid nearby large motors, large transformers, etc., so as to avoid electromagnetic interference;
Third, the installation position and flow direction
1, the measurement pipeline must be completely filled with liquid;
2. The axis of the measuring electrode must be approximately horizontal;
3, there must be a vacuum inside the pipeline will damage the flow meter lining, need special attention;
4. The flow direction of the fluid is the same as the direction of the flowmeter arrow.
5. At least 5xD (D is the inner diameter of the flowmeter) straight pipe section in front of the flowmeter, and at least 3xD (D is the inner diameter of the flowmeter) straight pipe section at the rear; for easy installation and disassembly, after the flowmeter Add pipeline expansion joints, measuring the distance between the mixing point and the flowmeter when measuring mixed liquids of different media, at least 30 × D (D is the inner diameter of the flowmeter);
6. There should be no strong electromagnetic field near the flowmeter; there should be sufficient space near the flowmeter for installation and maintenance; if there is vibration in the measurement pipeline, there should be fixed bearings on both sides of the flowmeter.
Changzhou Chengfeng Instrument 's electromagnetic flowmeter is a high-precision, high-reliability and long-life instrument. It is very particular about every aspect of the structure, material selection, formulation process, production assembly, and factory testing. Electromagnetic production equipment and flow real-time calibration device, in the software and hardware to ensure product quality. Electromagnetic design with backlight wide Chinese LCD display, full-featured, intuitive display, easy to operate.
First, the installation of straight pipe requirements <br> <br> first noted as a load of the sensor itself can not support point, it can not support the next working channel, it should clamp the pipe load. In order to obtain normal measurement accuracy, the electromagnetic flow sensor must also have a straight pipe section of a certain length upstream, but its length is lower than that of most other flow meters. 90o elbow, T-tube, concentric reducer, and full-opening valve shall be 5 times the diameter (5D) of the straight pipe section from the sensor's inlet flange connection surface. Valves with different opening degrees shall require 10D; the downstream straight pipe segment shall be (2 ~ 3) D; but to prevent the butterfly valve plate protruding into the sensor measuring tube. The lengths of the upstream and downstream straight pipe sections proposed by various standards or verification regulations are also inconsistent and are summarized in Table 2. The requirements are higher than usual. This is due to the requirement to achieve the current class 0.5 accuracy meter.
Second, the installation of the sensor
1, as much as possible to avoid the negative pressure in the measuring tube;
2. When measuring the mixed phase fluid, select the place that will not cause phase separation; when measuring the two-component liquid, avoid installing in the downstream where the mixing is not uniform; when measuring the chemical reaction pipeline, install it in the downstream of the fully completed reaction section;
3, as much as possible to avoid high concentrations of corrosive gases in the surrounding environment;
4, as far as possible to avoid direct sunlight;
5, to avoid nearby large motors, large transformers, etc., so as to avoid electromagnetic interference;
Third, the installation position and flow direction
1, the measurement pipeline must be completely filled with liquid;
2. The axis of the measuring electrode must be approximately horizontal;
3, there must be a vacuum inside the pipeline will damage the flow meter lining, need special attention;
4. The flow direction of the fluid is the same as the direction of the flowmeter arrow.
5. At least 5xD (D is the inner diameter of the flowmeter) straight pipe section in front of the flowmeter, and at least 3xD (D is the inner diameter of the flowmeter) straight pipe section at the rear; for easy installation and disassembly, after the flowmeter Add pipeline expansion joints, measuring the distance between the mixing point and the flowmeter when measuring mixed liquids of different media, at least 30 × D (D is the inner diameter of the flowmeter);
6. There should be no strong electromagnetic field near the flowmeter; there should be sufficient space near the flowmeter for installation and maintenance; if there is vibration in the measurement pipeline, there should be fixed bearings on both sides of the flowmeter.
Changzhou Chengfeng Instrument 's electromagnetic flowmeter is a high-precision, high-reliability and long-life instrument. It is very particular about every aspect of the structure, material selection, formulation process, production assembly, and factory testing. Electromagnetic production equipment and flow real-time calibration device, in the software and hardware to ensure product quality. Electromagnetic design with backlight wide Chinese LCD display, full-featured, intuitive display, easy to operate.
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