Radius pressure tapping
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I would like to ask the experts here: is the standard for taking pressure readings at a distance of 1D in front and 1/2D behind acceptable, or can it be more than that? ? ?
The standard is the distance from the pressure tap to the orifice plate
This post was last edited by ZhiGE on 2020-5-26 08:23. Pressure tapping method for throttle devices: ≤DN25 (1") – corner tapping; DN40 (1-1/2") to DN300 (12") – flange tapping; ≥DN350 (14") – pitch tapping or equalizing ring tapping
This post was last edited by cqdfwy on 2020-6-15 at 17:42. It’s clear from this that the medium flow rate and pressure vary depending on the location; as a result, the differential pressure also changes. In other words, if the pressure measurement point is not fixed, different differential pressure signals will be obtained, which in turn leads to different flow rates. Only by specifying a fixed pressure measurement point can corresponding differential pressure signals and flow rates be determined. Therefore, pressure must be taken at the specified standard locations; it cannot be too large, nor too small.