Emerson Rosemount 3051 Quick Start Manual page 11

December 2019
2.1.6 Environmental seal for housing
For NEMA
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.
2.1.7 Inline gage transmitter orientation
The low side pressure port (atmospheric reference) on the inline gage
transmitter is located in the neck of the transmitter, behind the housing. The
vent path is 360 degrees around the transmitter between the housing and
sensor (see
Keep the vent path free of any obstruction, such as paint, dust, and
lubrication, by mounting the transmitter so that the process can drain away.
Figure 2-12: Inline Gage Low Side Pressure Port
A. Low side pressure port (atmospheric reference)
2.1.8 Install high pressure coned and threaded connection
The transmitter comes with an autoclave connection designed for pressure
applications. Follow the steps below to properly connect the transmitter to
your process.
Procedure
1. Apply a process-compatible lubricant to the gland nut threads.
2. Slip the gland nut onto the tube; then thread the collar onto the tube
end.
The collar is reverse threaded.
3. Apply a small amount of process-compatible lubricant to the tube
cone to help prevent galling and facilitate sealing. Insert the tubing
into the connection and use the fingers to tighten the bolts.
4. Tighten the gland nut to a torque of 25 ft-lb.
Quick Start Guide
®
4X, IP66, and IP68 requirements, use thread sealing (PTFE) tape
Figure 2-12).
Quick Start Guide
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