The function of the throttle hole is mainly to adjust the flow rate, which is a thin-walled small hole. The role of the throttle hole in the gas momentum meter system is calibration, so it is also one of the important factors affecting the measurement degree of the gas momentum meter. The size of the throttle hole should be adjusted according to the size of the probe hole and the initial gap of the measurement. Improper aperture will make the measurement in different working conditions, and the result will be inaccurate.
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Why does the pneumatic measuring head affect the measuring accuracy of the pneumatic momentum meter?