The measurement of water flow is not very difficult. Most of the liquid flow meters of different principles can be used to measure the flow of water, but it is certainly not good if you just install one. This is because the same is the water flow measurement proposition. Due to the different cleanliness of the water, the fluid conditions are different, the flow measurement range is very different, the reliability requirements are different, the measurement accuracy requires high bottom and the cost tolerance is different. The selection is different. Strictly speaking, it is not an easy task to select an instrument that is both good and economical among the many types of instruments that can be selected. This not only requires engineers to have a full understanding of the characteristics of various liquid flow meters, but also for measurement objects for process monitoring and control. For water flow meters for process monitoring and control, the requirements for measurement accuracy of turbine liquid flow meters are generally not as high as those used for trade settlement. The main considerations are reliability, price, and type of output signal.
In the old equipment of industrial and mining enterprises, the most used is still the throttle type differential pressure liquid flow meter. In the new installation, people prefer to use the vortex liquid flow meter. This is because the throttle type differential pressure liquid flowmeter has complicated installation, large maintenance workload, large pressure loss, and the open-air installation instrument needs to consider antifreeze, etc. The installation and maintenance of the liquid flow meter is very simple, so the throttle type differential pressure liquid flow meter is greatly squeezed out of the market in the water flow measurement. However, the vortex liquid flowmeter can only solve part of the water flow measurement problem, because the vortex liquid flowmeter with larger diameter is more expensive than the electromagnetic liquid flowmeter of the same diameter, and the vortex liquid flowmeter with the largest diameter can only do it. DN300~DN400 . The smallest diameter vortex liquid flowmeter is now DN15, its minimum measurable water flow is 0.32/m3h , while the electromagnetic liquid flowmeter has a diameter of DN2.5~DN3000, and the measurable flow rate is from 0.0053 to 305000m3/h . The coverage is much wider than the vortex liquid flow meter. The vortex can only reach about 0.4 m/s in terms of the lowest flow rate that can be measured, and the electromagnetic liquid flow meter can measure normally at 0.1 m/s .
There is sufficient research on its price, and more importantly, it has sufficient understanding of the specific requirements of the measurement object, working condition parameters and the use environment. Horizontal installation should be such that the electrode axis is parallel to the horizon, not to hang down to the horizon, because the electrode at the bottom is easily covered by deposits, the top electrode is easily wiped by bubbles that may be present in the liquid, covering the surface of the electrode, making the output Signal fluctuations.
Introduction:
 He liquid liquid flowmeter is also a product of electromagnetic liquid flowmeter. It is designed with the latest Chinese liquid crystal display screen to make the reading more clear, and the function is more complete. The operation is also relatively simple. The latest Chinese liquid crystal display solves the English. The inconvenience brought by the display, the technicians of Huaneng Automation Instrument Co., Ltd. also developed a new 4-6 multi-electrode structure, which ensures the measurement accuracy and does not require a grounding ring in any place, greatly reducing The trouble with the volume and maintenance of the liquid flow meter. The stability of the measurement accuracy of the liquid liquid flowmeter is not affected by the density, viscosity, temperature and pressure. The induced voltage signal of the sensor is linear with the average flow velocity, which ensures high-precision measurement. There is no obstruction in the measuring tube that hinders the fluid. Therefore, there is no additional pressure loss, and there are no moving parts inside the measuring tube, which greatly increases the service life of the sensor. The induced voltage signal of the liquid liquid flowmeter is formed in the entire space filled with the magnetic field and is the average value of the cross section of the pipeline. Therefore, the straight pipe section required by the sensor cannot be short, and should be 5 times the diameter of the pipe. The type can be selected according to the medium of the liquid to resist corrosion or wear-resistant materials.
Installation method:
1 : The instrument is installed with flange connection, threaded connection and clip-on type;
2 : The direction of liquid flow during installation should be consistent with the direction of the arrow indicating the flow direction on the sensor casing, and the upstream straight pipe section should be ≥20dn , and the downstream straight pipe section should be ≥5dn , where d is the pipe inner diameter.
3 : The sensor should be kept away from the external magnetic field. If it cannot be avoided, the necessary measures should be taken;
4 : In order to prevent the normal transportation of the liquid during maintenance, the bypass pipe should be installed outside the straight pipe section at both ends of the sensor;
5 : When the sensor is installed in the open air, please make the waterproof treatment of the amplifier plug;
6 : The wiring of the sensor and the display instrument should be selected according to the power supply of the amplifier. For details, please refer to the “ Instructions for Use †.
7 : The liquid liquid flowmeter sensor can be installed horizontally and vertically, and the fluid direction must be upward when hanging. The liquid should be filled with tubing and must be free of air bubbles. When installing, the direction of liquid flow should be the same as the direction of the arrow on the sensor housing indicating the direction of flow. The upstream end of the sensor shall have at least 20 times the straight pipe length of the nominal diameter, and the downstream end shall be not less than 5 times the straight pipe section of the nominal diameter. The inner wall shall be smooth and clean without defects such as dents, scale and skin.
8 : If the fluid is unstable and there is pulsating flow, a buffer can be installed to ensure good measurement of the rotor liquid flow meter to eliminate the pulsating flow. When the rotor liquid flow meter is in use, the control valve on the upstream pipe of the liquid flow meter should be slowly unscrewed, and then the flow rate should be adjusted by the regulating valve to avoid the sudden opening of the float causing the float to rise and damage the cone.
Steel pipes are long, hollow tubes that are used for a variety of purposes. They are produced by two distinct methods which result in either a welded or seamless pipe. In both methods, raw steel is first cast into a more workable starting form. It is then made into a pipe by stretching the steel out into a seamless tube or forcing the edges together and sealing them with a weld. The first methods for producing Steel Pipe were introduced in the early 1800s, and they have steadily evolved into the modern processes we use today. Each year, millions of tons of steel pipe are produced. Its versatility makes it the most often used product produced by the steel industry.
Steel pipes are found in a variety of places. Since steel pipes are strong, they are used underground for transporting water and gas throughout cities and towns. They are also employed in construction to protect electrical wires. While steel pipes are strong, they can also be lightweight. This makes them perfect for use in bicycle frame manufacture. Other places they find utility is in automobiles, refrigeration units, heating and plumbing systems, flagpoles, street lamps, and medicine to name a few.
| Outer Diameter | 12mm-720mm |
| Wall Thickness | 0.5mm-20mm |
| Length | 1m-5.8m/6m/11.8m/12m, or random length as client's requests |
| Tolerence | ±5% |
| Surface Treatment | Black or oiled or galvanized |
| Standards | ASTM A53,BS1387-85,GB/T3091-08,DIN2440,JIS-G3444,EN10255 |
| Material | Q195, Q215, Q235, Q345 ,16Mn,10#,20# |
| Certificate | IS0 9001:2000,SGS,BV,CCIC,ETC |
| End Treatment | Plain end; Beveled; Threaded with sockets/coupling and plastic caps |
| Packaging | As client's requests |
| Usage | Scaffolding pipe; Structure pipe; Fence/Door pipe; Furniture; |
| Low pressure fluid pipe for water, oil or gas; Boiler pipe | |
| Delivery Time | 10 days from stock; 20-30 days produced according to the qty |
| Payment Term | T/T; L/C |
| Price Term | CIF; CFR; FOB Qingdao, Tianjin, Shanghai, China |
| Loading Port | Qingdao, Tianjin, Shanghai, China |
| Others | 1. All the pipes is high-frequency welded. |
| 2. Both inner and outer welded stab can be removed. | |
| 3. Special design available according to requirement. | |
| 4. Steel pipe can be necked down and punched holes. | |
| 5. Supplying BV or SGS Inspection if client need. |
Application:
structural pipe; oil or gas transportation; fluid pipe; line pipe; drill pipe; boiler pipe
If you have any questions, please contact with us directly.
Our company is solemnly committed to the majority of customers: reasonable price, short production cycle, considerate service. We look forward to cooperating with you.
Steel Pipe
Steel Pipe,Galvanized Welded Steel Pipes,Steel Plumbing Pipe,Round Steel Pipe
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