Installation Procedures - Emerson Rosemount 3051S Series Reference Manual

Reference Manual
00809-0100-4801, Rev CB
January 2007
INSTALLATION
PROCEDURES
For dimensional drawing information refer to Appendix A: Specifications and
Reference Data on page A-16.
Process Flange Orientation
Mount the process flanges with sufficient clearance for process connections.
For safety reasons, place the drain/vent valves so the process fluid is directed
away from possible human contact when the vents are used. In addition,
consider the need for a testing or calibration input.
Housing Rotation
See "Consider Housing Rotation" on page 2-12.
Terminal Side of Electronics Housing
Mount the transmitter so the terminal side is accessible. Clearance of 0.75 in.
(19 mm) is required for cover removal. Use a conduit plug in the unused
conduit opening.
Circuit Side of Electronics Housing
Provide 0.75 in. (19 mm) of clearance for units with out an LCD display. Three
inches of clearance is required for cover removal if a meter is installed.
Cover Installation
Always ensure a proper seal by installing the electronics housing cover(s) so
that metal contacts metal. Use Rosemount O-rings.
Cover Jam Screw
For transmitter housings shipped with a cover jam screw, as shown in
Figure 2-2, the screw should be properly installed once the transmitter has
been wired and powered up. The cover jam screw is intended to disallow the
removal of the transmitter cover in flameproof environments without the use of
tooling. Follow these steps to install the cover jam screw:
1. Verify that the cover jam screw is completely threaded into the housing.
2. Install the transmitter housing cover and verify that the cover is tight
against the housing.
3. Using an M4 hex wrench, loosen the jam screw until it contacts the
transmitter cover.
4. Turn the jam screw an additional 1/2 turn counterclockwise to secure the
cover. (Note: Application of excessive torque may strip the threads.)
5. Verify that the cover cannot be removed.
Rosemount 3051S Series
2-5