Daily Question on Automation Theory Knowledge (8.25)

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This post was last edited by 18663069001 on 2017-8-25 at 15:36. Process and instrumentation are inseparable; to help everyone gain a better understanding of the basics of instrumentation, we have launched the \"One Question per Day\" campaign – just reply to view it. To encourage continued participation from everyone! You get 3 wealth rewards just for participating! Higher rewards for correct answers! I hope everyone will participate actively, learn together, and make progress together! ! ! Multiple-choice question: 40. If an orifice plate installed on a pipeline is placed in the wrong orientation, it will cause ( ). A. The differential pressure gauge to show the opposite reading B. The differential pressure gauge’s reading to decrease C. The differential pressure gauge’s reading to increase D. No effect on the differential pressure gauge’s reading. The reading decreases. Because if the flow direction of the orifice plate is reversed, the resistance at the inlet decreases, resulting in an increased flow coefficient and a lower reading on the instrument. The answer to this question is: B