How to use pitot tubes correctly

Abstract: The information on the correct use of pitot tubes is provided by excellent flowmeter and flowmeter manufacturers. How to use Pitot tube: 1. To correctly select the measuring point section, make sure that the measuring point is in a straight pipe section with smooth airflow. For this reason, the local components such as elbows, valves, and variable-diameter special-shaped pipes that measure the direction of the outgoing flow of the cross-section should be larger than 4 times the diameter of the pipe. away from the downstream direction. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following are the details of the article on the correct use of pitot tubes. Pitot tube usage: 1. To correctly select the measuring point section, make sure that the measuring point is in a straight pipe section with smooth airflow. For this reason, the local components such as elbows, valves, and variable-diameter special-shaped pipes that measure the direction of the outgoing flow of the cross-section should be larger than 4 times the diameter of the pipe. The local elbow and reducing structure from the downstream direction should be larger than 2 times the diameter of the pipe. 2. The selection principle of the diameter specification of the pitot tube is the ratio of the diameter of the pipe under test, which is not greater than 0.02. In order to avoid interference and increase the error. Do not allow the pitot tube to be close to the tube wall when measuring. 3. When measuring, the full pressure hole should be aligned with the direction of the airflow, as indicated by the pointing rod. Air leakage should be avoided at the insertion hole of the measuring point to prevent airflow interference on the section. According to the technical specifications of pipeline measurement, the measurement points of the measurement section should be reasonably selected. 4. The pitot tube can only measure the flow velocity at a certain point on the pipe section, but the average flow velocity is used when calculating the flow rate. Since the flow distribution of the section is not uniform, more points should be measured on the section to obtain the average value. The measuring point shall be in accordance with the provisions of the flue (pipe) measurement method,“log-linear”It can also be divided according to the commonly used equal division area. 5. The S-type pitot tube static pressure joint is marked with a mark number, and the pitot tube coefficient is indicated on the identification sheet. The identification form should be kept for a long time for calculation. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to Use Pitot Tube Correctly'

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