Emerson Rosemount 3051 Quick Start Manual page 8

Quick Start Guide
In-line gage transmitter orientation
The low side pressure port (atmospheric reference) on the in-line gage
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 4.)
Keep the vent path free of any obstruction, including but not limited to paint,
dust, and lubrication by mounting the transmitter so fluids can drain away.
Figure 4. In-line Gage Low Side Pressure Port
A. Pressure port location
Installing high pressure coned and threaded connection
The transmitter comes with an autoclave connection designed for high pressure
applications. Follow the steps below to properly connect the transmitter to your
process:
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 applied to the tube
cone to help prevent galling and facilitate sealing. Insert the tubing into the
connection and tighten finger tight.
4. Tighten the gland nut to a torque of 25 ft-lb.
Note
A weep hole has been designed into the transmitter for safety and leak detection. If fluid
begins to leak from the weep hole, isolate the process pressure, disconnect the transmitter,
and reseal until the leak is resolved.
8
August 2016
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