Emerson Rosemount 3051C - Environmental seal for housing; In-line gauge transmitter orientation

Figure 2-5: O-ring location: Rosemount 3051S/3051/2051
A. Flange adapter
B. O-ring
C. PFTE-based profile (square)
D. Elastomer profile (round)
Note
Whenever the flanges or adapters are removed, visually inspect the
O-rings. Replace them if there are any signs of damage, such as nicks
or cuts. If you replace the O-rings, re-torque the flange bolts and
alignment screws after installation to compensate for seating of the
PTFE O-ring.
2.7 Environmental seal for housing
For NEMA
®
4X, IP66, and IP68 requirements, use thread sealing PTFE
tape or paste on male threads of conduit to provide a water and
dust tight seal. Consult factory if other ingress protection ratings are
required.
For M20 threads, install conduit plugs to full thread engagement or
until mechanical resistance is met.
2.8
In-line gauge transmitter orientation
The low side pressure port (atmospheric reference) on the in-line
gauge transmitter is located in the neck of the transmitter, behind
the housing.
The vent path is 360° around the transmitter between the housing
and sensor. (See Figure 2-6.)
Keep the vent path free of any obstruction, including but not limited
to paint, dust, and lubrication, by mounting the transmitter so that
fluids can drain away.
February2024 Quick Start Guide
Quick Start Guide 11