Abstract: The explanatory information about the debugging and use of positive displacement
flowmeters is provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. After the flowmeter is installed, it is extremely important to use and maintain the flowmeter correctly. Only by using the flowmeter correctly can the flowmeter work within the specified accuracy range; only by maintaining the flowmeter in use in time can the flowmeter operate normally. Trying out. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. Below are the details of the explanation articles on the debugging and use of positive displacement flowmeters. After the flowmeter is installed, it is extremely important to use and maintain the flowmeter correctly. Only by using the flowmeter correctly can the flowmeter work within the specified accuracy range; only by maintaining the flowmeter in use in time can the flowmeter operate normally. In the trial operation and normal operation, the use of positive displacement flowmeter should pay attention to the following issues: I. Trial operation - the newly designed or re-installed positive displacement flowmeter system, after the installation and inspection are correct, the trial operation should be carried out Work inspection. Trial operation should be carried out according to the following procedures. 1) Close the valves (on-off valve and regulating valve) before and after the flowmeter, and slowly open the bypass valve (for horizontally installed flowmeters, the bypass valve is on the bypass pipeline, and for vertically installed flowmeters, the bypass valve is on the main pipe). Flow through the bypass valve, flush the remaining debris in the pipeline and balance the pressure at the inlet and outlet of the flowmeter. If there is no bypass pipeline, a short tube can be installed in the pipeline instead of the flowmeter to allow the fluid to pass through. After the pipeline is flushed, remove the short tube and replace it with the flowmeter. 2) Start the flowmeter to work. For the flowmeter with electrical remote transmission, first connect the signal line and power line, and turn on the power for preheating. Then, slowly open the switch valve in front of the flowmeter, then slowly open the regulating valve behind the flowmeter, and finally slowly close the bypass valve, and use the regulating valve at the outlet of the flowmeter to adjust the flow, so that the flowmeter works under normal flow: if it is If the temperature of the measuring fluid is very high, and the temperature difference with the ambient temperature is large, the metering system should be preheated before the flowmeter is operated, so that the flowmeter and the pipeline system are slowly heated up to ensure the normal operation of the flowmeter. 3) Observe and record the changes of various operating parameters, such as temperature, pressure, etc. The system should be free of large vibration, noise and leakage. After a period of stable operation, the trial operation ends. 2. Normal operation After the metering system of the positive displacement flowmeter has been put into normal operation after normal trial operation, the operator should do a good job in using and maintaining it from the following aspects. 1) During operation, always pay attention to whether the flow, pressure, pressure, viscosity and other parameters of the medium on the side meet the use range of the flowmeter. If the deviation is large, the cause should be identified and compensation should be considered. 2) The work of starting and closing the flowmeter should still be carried out in the order of the test run. Generally, strict operating procedures and specifications should be formulated, including the use specifications of the flowmeter, the operation rules and verification cycle of the flowmeter inspection, the flowmeter fault handling procedure, the activation regulations of the standby flowmeter, and the seal of the flowmeter and the bypass valve, etc. 3) Regular inspection, maintenance and inspection of the entire measurement system. The content includes flowmeters, valves and piping systems, ancillary equipment such as filters and air eliminators, side measuring instruments such as thermometers, pressure gauges and density meters, protective equipment such as safety valves, limiting valves and alarms, as well as flow display instruments, Flow auxiliary equipment such as recording device and compensation device. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Explanation on the Commissioning and Use of Positive Displacement Flow Meters'
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