When I get to the gas station, I always say dashingly: Fill up Have you ever wondered how does the fuel gun know that the fuel is full? The fuel gun is only placed in the fuel tank mouth, not deep enough, how do you know that it is full? Many friends will say, there are sensors or something, right? In short, they are only half-knowledgeable. How on earth, let's see It is found in the video that the mechanical structure is still used, so what will happen to the flowmeter that monitors the liquid flow? Today introduces a pulse type liquid turbine flowmeter GLWG pulse type liquid turbine flowmeter Shanghai Kanghui pulse type liquid turbine flowmeter is composed of turbine flow sensor and display instrument. It is one of the most ideal flowmeters for liquid measurement. The flowmeter has the characteristics of simple structure, high accuracy, easy installation and maintenance. This product is widely used in petroleum, chemical, metallurgy, water supply, papermaking, environmental protection, food and other fields. It is suitable for measuring liquids in closed pipelines without impurities such as fibers and particles. The product will remotely output the flow signal and use it in conjunction with computer control systems such as subsequent totalizers, secondary display meters, PLC, and DCS. If it is used in conjunction with a display instrument with special functions, it can be used for automatic quantitative control, overweight alarm and other purposes. Features: 1. The sensor is a hard alloy bearing thrust type, which not only guarantees accuracy, but also improves wear resistance. 2. The structure is simple, firm and easy to disassemble and assemble. 3. The measurement range is wide, and the lower limit flow rate is low. 4. The pressure loss is small, the repeatability is good, and the accuracy is high. 5. It has high resistance to electromagnetic interference and vibration. working principle: The fluid flows through the sensor housing. Because the blades of the impeller have a certain angle with the flow direction, the impulse of the fluid makes the blades have a rotational torque. After overcoming the friction torque and fluid resistance, the blades rotate. After the torque is balanced, the speed is stable. Under certain conditions, The speed is proportional to the flow rate. Because the blade is magnetically permeable, it is in the magnetic field of the signal detector (composed of permanent magnets and coils). The rotating blade cuts the magnetic lines of force and periodically changes the magnetic flux of the coil, thus making the two ends of the coil. The electric pulse signal is induced. This signal is amplified and shaped by the amplifier to form a continuous rectangular pulse wave with a certain amplitude, which can be transmitted to the display instrument remotely to display the instantaneous flow and cumulative amount of the fluid. Within a certain flow range, the pulse frequency f is proportional to the instantaneous flow Q of the fluid flowing through the sensor, The flow equation is: Q=3600×f/k; Where: f——pulse frequency [Hz]; k——The meter coefficient of the sensor [1/m3], which is given by the calibration sheet. If the unit is [1/L] Q——The instantaneous flow rate of fluid (under working condition) [m3/h]; 3600-conversion factor. The meter coefficient of each sensor is filled in the verification certificate by the manufacturer, and the k value is set in the matching display instrument to display the instantaneous flow and cumulative total. Main technical performance: 1. Nominal diameter: DN8 2. Flow range: 0.05～0.5m³/h 3. Maximum working pressure: 4MPa 4. Fluid medium: liquid with kinematic viscosity <5×10-6㎡/s at working temperature 5. Medium temperature: (-40~50)℃ (normal type), (-40～150)℃ (high temperature type); 6. Ambient temperature: (-20～55)℃; 7. Accuracy: ±0.2%, ±0.5%, ±1%; 8. Detector signal transmission line system: three-wire voltage pulse (three-core shielded cable); 9. Power supply: voltage: DC5~24V; 10. Output voltage amplitude: high level ≥ 8V, low level ≤ 0.8V; 11. Transmission distance: the distance from the sensor to the display instrument can reach 250 meters; 12. The explosion-proof grade is: ExdIIBT6 structure: Shanghai Kanghui's turbine flowmeter uses the turbine magnetic pole signal to directly isolate and collect. The turbine flowmeter is airtight as a whole without leakage. The turbine flowmeter has simple structure, convenient installation and maintenance, and strong anti-interference. Precautions for use 1. When using, keep the tested liquid clean and free of impurities such as fibers and particles. The purity of the fluid medium must pass through a 100mm filter; 2. When the sensor starts to use, the sensor should be slowly filled with liquid, and then the outlet valve should be opened (the valve should be installed at the back of the flowmeter). It is strictly forbidden that the sensor is impacted by high-speed fluid when it is in a liquid-free state; 3. The maintenance period of the sensor is generally half a year. During maintenance and cleaning, please be careful not to damage the parts in the measuring chamber, especially the impeller. When assembling, please pay attention to the position relationship between the guide and the impeller; 4. When the sensor is not in use, clean the internal liquid, dry it and add protective covers on both ends of the sensor to prevent dirt from entering, and then store it in a dry place; (this is very important) 5. The equipped filter should be cleaned regularly, and the internal liquid should be cleaned when not in use. Just like the sensor, add a dust cover and store it in a dry place; 6. The transmission cable of the sensor can be laid overhead or buried (the iron pipe should be covered when buried). Pv Branch Connector,Mc4 Y Type Connector,Mc4 Branch,Mc4 Branch Adapter Sowell Electric CO., LTD. , https://www.sowellsolar.com
