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Reference Manual
00809-0100-4828, Rev AA
October 2003
INSTALLATION
Rosemount 1595 Types:
1595 P
1595 G
1595 U
Rosemount 1496 Types:
1496 WN
1496 SO
1496 RJ
Step 1: Determine the Proper Orientation
See "Location and Orientation" on page 2-2.
Step 2: Weld the Flange Union.
Follow these steps to weld the orifice flanges to the pipe.
1.
Depressurize the line using site-specific requirements
2.
Prepare the pipe ends.
a. For flanged models, ensure the pipe mounting flange is the same
size or rating.
a. For threaded models, ensure the pipe union or coupling is the
same size pipe thread as the meter section
3.
Ensure that the pipe mounting flange is the correct size and rating.
4.
Ensure that the flange taps are aligned and level.
5.
Weld the orifice flange to the pipe. To avoid serious burns, allow the
orifice flanges to cool before continuing.
Step 3: Install the Orifice Plate:
1.
Depressurize the line using site-specific requirements
2.
Loosen all studs and nuts.
3.
Remove the studs in one-half of the flange union.
4.
Spread flange union by turning jackscrews clockwise.
5.
Install the new plate or remove the existing plate for replacement or
inspection.
6.
Install the new gaskets when installing the plate. It is recommended
that new gaskets be installed each time the orifice flange union is
separated.
7.
Center the plate in the pipe I.D.
8.
Release the flange union by turning the jackscrews
counter-clockwise.
9.
Replace the studs.
10. Tighten studs in a star pattern.
Rosemount 1595
2-6
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