Emerson Rosemount 3051S Series Reference Manual page 21

Reference Manual
00809-0200-4801, Rev DA
Liquid flow measurement
Place taps to the side of the line to prevent sediment deposits on the process isolators.

Mount the transmitter beside or below the taps so gases vent into the process line.

Mount drain/vent valve upward to allow gases to vent.

Gas flow measurement
Place taps in the top or side of the line.

Mount the transmitter beside or above the taps so to drain liquid into the process line.

Steam flow measurement
Place taps to the side of the line.

Mount the transmitter below the taps to ensure that impulse piping will remain filled with condensate.

In steam service above 250 °F (121 °C), fill impulse lines with water to prevent steam from contacting

the transmitter directly and to ensure accurate measurement start-up.
Note
For steam or other elevated temperature services, it is important that temperatures at the process
connection do not exceed the transmitter's process temperature limits. See
limits" on page 111
Figure 2-4. Coplanar Installation Examples
Installation
for details.
Gas or liquid service Gas service
FLOW
Installation
October 2016
"Process temperature
Steam service
11