Uniform velocity tube flowmeter

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1. The three simplest steps for installing a counter blowing system on a averaging tube flowmeter can be summarized into three points: gas source preparation, system connection, and debugging and inspection. 1. The preparation work first needs to confirm the characteristics of the blowback air source: use a dry and clean air source, and ensure stable pressure, generally 0.1-0.3 MPa higher than the pipeline medium pressure. At the same time, prepare all materials, such as gas pipes that match the flowmeter interface, ball valves that control the flow of air, etc.
2. System connection: Connect the gas source to the inlet end of the ball valve through the gas pipe, and connect the outlet end of the ball valve to the dedicated anti blowing interface of the flowmeter.
. During the process, it is necessary to check the sealing performance, such as using clamps or sealant to prevent air leakage. 3. Debug and verify the slow opening of the ball valve and adjust the pressure, and set the parameters according to the flow meter. After completion, observe the operating status of the equipment, such as numerical stability, and check for air leaks, such as using soapy water to detect whether there is bubbling at the interface.

2. Construction of a uniform velocity tube flowmeter

The core of the uniform velocity tube flowmeter construction consists of three parts: an integrated sensor, a differential pressure transmitter, and an accumulator.

. 1. The integrated power bar sensor of the core measurement unit adopts a streamlined dual cavity stainless steel structure, and the surface is roughened to form a turbulent boundary layer. The high-pressure tapping hole is set on the metal curved surface at the fron Uniform velocity tube flowmeter

t end of the probe, forming a high-pressure barrier to prevent particles from entering; The low-pressure tapping hole is located in front of the side rear airflow separation point, and the double row symmetrical layout greatly reduces the risk of blockage. The differential pressure transmitter of the signal conversion module precisely senses the pressure difference between the total pressure of the high-pressure chamber and the static pressure of the low-pressure chamber, which directly reflects the average flow velocity of the fluid. After temperature compensation and linearization processing within the module, the standard electrical signal is output to the data processing stage. 3. The data analysis terminal integrator has a built-in fluid density compensation algorithm, combined with operating parameters such as pipe diameter size and Reynolds number, to achieve dual calculation of instantaneous flow rate and accumulated flow rate through Bernoulli equation. The built-in storage unit supports historical data traceability, and the communication interface supports standard protocols such as Modbus for accessing DCS systems. The anti-interference design of the measurement system is reflected in the overall hard alloy welding process of the sensor and the fluid dynamics self-cleaning structure, which ensures long-term stable operation in particulate media. The unique drainage groove design of the low-pressure hole can carry out trace impurities that enter with the main airflow. The measured data shows that after continuous operation for 300 days, the blockage rate of the pressure hole is less than 0.3%.

3. Who knows the characteristics of intelligent averaging tube flowmeter?

1. Features and functions ● I

2. Construction of a uniform velocity tube flowmeter

3. Who knows the characteristics of intelligent averaging tube flowmeter?

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