Emerson Rosemount 3051S Reference Manual page 31

Reference Manual
00809-0100-4804, Rev AA
January 2011
Rosemount 306 Manifold
Installation Procedure
Manifold Valve
Configurations
Rosemount 3051S ERS System
To install a 306 In-Line Manifold to a 3051S ERS sensor:
1. Place the 3051S ERS sensor into holding fixture.
2. Apply appropriate thread paste or tape to the threaded instrument
end of the manifold.
3. Count the total threads on the manifold before starting assembly.
4. Start turning the manifold by hand into the process connection on the
transmitter. Be sure the thread tape does not strip.
5. Wrench-tighten the manifold into the process connection. The
minimum torque value is 425 in-lbs.
6. Count how many threads are still showing. The minimum thread
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 3 rotations is achieved.
8. For block and bleed manifold, verify the bleed screw is installed and
tightened. For two-valve manifold, verify the vent plug is installed and
tightened.
9. Leak-check assembly to maximum pressure range of transmitter.
Block-and-Bleed Manifold
The block-and-bleed configuration is available on the Rosemount 306
Manifold for use with In-Line gage and absolute pressure transmitters. A
single block valve provides instrument isolation, and a plug provides
draining/vent capabilities.
Transmitter
Isolate
Process
Bleed Screw
2-23