Direction of the pressure tap for orifice plates used in steam flow measurement?
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In horizontal pipeline measurements, can the pressure tapping for steam flow measurement using an orifice plate be oriented vertically upward?
Yes, it is acceptable to take pressure readings from within a 45-degree angle around the horizontal centerline of the pipeline. For liquids, pressure is taken within a 45-degree angle below.
One more thing: a condensation tank needs to be added!
It’s possible, but 1) a condensate tank must be added, and 2) the transmitter should be installed below the orifice plate
When measuring steam flow with a measuring orifice plate, the pressure tap location must be above the horizontal centerline of the pipeline. Refer to standard SHX3104-2000. Also, a condensation tank is essential
No, GB2050093 requires that the steam flow measurement port be located in the upper half, at an angle of 45 degrees to the horizontal line
Pressure can be taken in this way: the transmitter is installed at the bottom of the pipeline, or there is a condensation coil or condensation tank.
The specific installation methods have already been explained by those upstairs; I’d like to share my own opinion. When using orifice plates to measure steam flow for general flow measurement purposes, temperature and pressure compensation can help, but the accuracy isn’t very high when such devices are used as meters.