June 2016
10
Quick Start Guide
3.0 Primary element installation
1. Orient the assembly according to the guidelines provided in
“Primary element
orientation” on page 5
. Ensure the flow arrow stamped on the
405 Primary Element is pointing in the same direction as the process flow.
Note
ANSI 150 - 600# alignment ring is included as standard when ordering for up to 8-in. line
sizes. For the 10-in. and 12-in. line size, the alignment ring must be ordered (Installation
Accessories). If a DIN or JIS alignment ring is required, it must be ordered as an option.
Contact an Emerson Process Management sales representative for additional information.
Note
For ease of installation, the gasket may be secured to the flange face with small pieces of
tape. Be sure the gasket or tape does not protrude into the pipe.
2. If using an alignment ring with through holes, proceed to
Step 9
.
3. Insert two studs through the flange holes located opposite the head of the
Rosemount 405.
4. Place the alignment ring on the Rosemount 405 body (see
Figure 10
).
5. Insert gaskets.
6. Insert the Rosemount 405 between the flanges so the indentations on the
alignment ring contact the installed studs. The studs must contact the
alignment ring in the indentation marked with the appropriate flange rating
to ensure proper alignment.
7. Install remaining studs and nuts (hand tight). Ensure three of the studs are in
contact with the alignment ring.
8. Lubricate studs and tighten nuts in a cross pattern to the appropriate torque
per local standards.
Step 9
through
Step 12
are for use with alignment rings that have through holes.
9. Place the alignment ring on the Rosemount 405 body (see
“Horizontal gas” on
page 6
).
10. Insert the Rosemount 405 between the flanges.
a. Starting on the side opposite the Rosemount 405 head, rotate the
alignment ring such that the radius corresponding to the alignment ring
marking matches that of the application flange rating.
b. Insert one stud through both the upstream and downstream flanges and
allow the ring to rest on the bolt. This will ensure proper alignment.
11. Repeat
Step 10
for the installation of the remaining bolts that will contact the
alignment ring.
12. Insert gaskets.
13. Install remaining studs and nuts (hand tight). Ensure three of the studs are in
contact with the alignment ring.
14. Lubricate studs and tighten nuts in a cross pattern to the appropriate torque
per local standards.
00825-0100-4810_RevHA.fm Page 10 Friday, June 17, 2016 3:15 PM
