The BETA value of the orifice plate
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What does the BETA value in the instrumentation specification sheet for orifice plates refer to?
In the standards for throttling devices, the Reynolds number relative to the pipe diameter D is denoted as ReD, while the Reynolds number relative to the orifice diameter d of the throttling element is denoted as Red. The relationship between the two is ReD = βRed, where β is the diameter ratio of the throttling element, that is, β = d/D; this factor must be taken into account when using such standards.
If the β value exceeds 0.75 or is less than 0.2, the measurement will be inaccurate
β is the ratio of the orifice diameter of the orifice plate to the inner diameter of the pipe, that is, β = d/D.
What does BETA mean? Could you explain its exact meaning in detail? What the person above meant is that BATE refers to the diameter ratio
It’s not the diameter ratio, it’s the aperture ratio!