Emerson Rosemount 2088 Reference Manual page 44

Hardware Installation
April 2021
3.4.2 Impulse piping
Mounting requirements
Impulse piping configurations depend on specific measurement conditions. Refer to
Figure 3-5
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 startup.
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.
Figure 3-5: Liquid Applications Installation Example
44
for examples of the following mounting configurations:
Rosemount 2088, 2090P, and 2090F Pressure Transmitter Reference Manual
Reference Manual
00809-0100-4108