Rosemount 306 In-Line Manifold Installation Procedure; Rosemount 304 Conventional Manifold Installation Procedure - Emerson Rosemount 3051S Series Reference Manual

Installation
October 2016
Note
Always perform a zero trim on the transmitter/manifold assembly after installation to eliminate
mounting effects. See
2.8.2

Rosemount 306 In-line Manifold installation procedure

The Rosemount 306 is for use only with a Rosemount 3051S In-line Transmitter.
Assemble the Rosemount 306 to the Rosemount 3051S with a thread sealant.
1. Place transmitter into holding fixture.
2. Apply appropriate thread paste or tape to threaded instrument end of the manifold.
3. Count total threads on the manifold before starting assembly.
4. Start turning the manifold by hand into the process connection on the transmitter.
Note
If using thread tape, be sure the thread tape does not strip when the manifold assembly is started.
5. Wrench tighten manifold into process connection.
Note
Minimum torque value is 425 in-lb.
6. Count how many threads are still showing.
Note
Minimum engagement is three revolutions.
7. Subtract the number of threads showing (after tightening) from the total threads to calculate the
revolutions engaged. Further tighten until a minimum of three rotations is achieved.
8. For block and bleed manifold, verify the bleed screw is installed and tightened. For 2-valve manifold,
verify the vent plug is installed and tightened.
9. Leak-check assembly to maximum pressure range of transmitter.
2.8.3

Rosemount 304 Conventional Manifold installation procedure

To install a Rosemount 304 to a Rosemount 3051S:
1. Align the conventional manifold with the transmitter flange. Use the four manifold bolts for
alignment.
2. Finger tighten the bolts, then tighten the bolts incrementally in a cross pattern (see
final torque value. See
values. When fully tightened, the bolts should extend through the top of the module housing plane
of the flange web (i.e. bolt hole) but must not contact the module housing.
3. If applicable, install flange adapters on the process end of the manifold using the 1.75-in. flange bolts
supplied with the transmitter.
18
"Zero trim method" on page
Table 2-1 on page 8 for complete bolt installation information and for torque
54.
Reference Manual
00809-0200-4801, Rev DA
Figure 2-10) to
Installation