Emerson Rosemount 2051G - Impulse Piping

31
Reference Manual
00809-0100-4108, Rev BA
Hardware Installation
January 2018
Hardware Installation
3.4.2 Impulse piping
Mounting requirements
Impulse piping configurations depend on specific measurement conditions. Refer to Figure 3-3 on
page 31 through Figure 3-5 on page 32 for examples of the following mounting configurations:
Liquid measurement
 Place taps to the side of the line to prevent sediment deposits on the transmitter’s process isolator.
 Mount the transmitter beside or below the taps so gases can vent into the process line.
 Mount drain/vent valve upward to allow gases to vent.
Gas measurement
 Place tap in the top or side of the line.
 Mount the transmitter beside or above the tap so liquid will drain into the process line.
Steam measurement
 Place tap to the side of the line.
 Mount the transmitter below the taps to ensure that the impulse piping will stay filled with
condensate.
 In steam service above 250 °F (121 °C), fill impulse line 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.
Figure 3-3. Liquid Applications Installation Example