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technical article
Some suggestions for the use and maintenance of glass rotor flowmeters
2012-3-3 11:29:28

为国内统设通用性强、结构简单、维修方便。 Jinhu Dongxiang LZB glass rotor flowmeter is universally designed in China, with simple structure and convenient maintenance. Segmented measurement, flexible measurement range, and small flow can be measured. The test body is made of various materials and can measure corrosive media. With a regulating valve below DN10, it is convenient for users. There are the following requirements during installation and use: 1. Before using the glass rotor flowmeter, check the technical parameters such as: measurement range, accuracy level, rated working pressure, temperature and other parameters that meet the requirements for use. 2. Before installation, remove the top lining which is used for transportation protection. And check the cone tube for damage, whether the float can move up and down freely, and it can be installed only after it is normal. 3. The newly installed pipeline should be flushed clean. 4. Make the minimum graduation value of the rotor flow meter below and install it vertically on a pipe without vibration. The angle between the center line of the rotor flow meter and the plumb line should not exceed 5 degrees. Large-caliber flowmeters are heavy. To avoid pipe bending, measures such as reinforcement and support can be taken if necessary. 5. During installation, the rotor flowmeter should be protected from excessive external force, such as pressure and torque. 6. If necessary, install a filter upstream of the rotor flowmeter to block the rotor flowmeter according to different working conditions in use to prevent contamination by impurities. 7. If the fluid is unstable and has a pulsating flow, a buffer can be installed to ensure the good measurement of the rotor flowmeter to eliminate the pulsating flow. 8. When the rotor flowmeter is in use, slowly open the control valve on the upstream pipe of the flowmeter, and then use the regulating valve to adjust the flow rate, so as to avoid the sudden rise of the float and the damage to the cone tube. 9. In order to obtain accurate measurement accuracy, it is recommended that the common flow rate of the measured fluid should be more than 60% of the graduated flow rate of the rotor flow meter.

由于流量计本体大部分为玻璃材质,使用及运输就要必须要小心。 Since the glass tube rotor flowmeter is mostly made of glass, care must be taken in its use and transportation. Jinhu Dongxiang sends glass rotor flowmeters to customers for express delivery in wooden cases. If there is any problem during transportation, we promise to replace it. Ensure that customers can use our products with satisfaction.

使用及维护的一些小建议,供大家参考: The following are some suggestions for the use and maintenance of glass rotor flow meters for your reference:
1. When you get the glass rotor flowmeter, first observe whether the glass tube in the glass rotor flowmeter is intact, because the glass tube is easily damaged. The second is to remove the fixed object, and gently tilt it to see if the rotor can slide up and down freely. If you cannot slide freely, you need to gently vibrate the support plate so that it can generally slide. If you can no longer slide, you need to ask a professional technician to disassemble the machine. 2. When installing to the pipeline, firstly check whether the upstream and downstream pipelines are in a straight line. If it is not on a straight line, it will not only affect the measurement accuracy of the meter, but also damage the meter. 3. The first two points must be correct before they can be used. The operator should read the manual in detail before using it. When opening the valve, you must open it slowly. If it is estimated that the flow can float the rotor and the rotor does not move upwards, immediately stop and continue to open the valve at the same time, and gently tap the pipe to make the rotor slowly rise. Many operators have opened the valve too fast and just installed new equipment. The sudden opening of the valve caused damage to the glass tube in the glass rotor flowmeter. This should be brought to the attention of the user. 4, safe use, some operators like to remove the front cover, this is not allowed, because the glass tube is easy to burst, remove the cover, the cover plays a protective role. Therefore, you cannot remove the cover and use it. 5. It should be kept warm during winter use. If it is not used at night, the residual liquid in the flow meter must be discharged, so as not to freeze the glass tube.