Rosemount 1495, Руководство по установке и эксплуатации

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Reference Manual
00809-0100-4792, Rev CA
August 2010
Rosemount 1495, 1496
A-4
Materials of Construction
1495 Orifice Plate
304/304L or 316/316L Stainless Steel ASTM A240; DIN 1.4571 (316Ti SST)
(1)
; Alloy C-276 ASTM
B575; or Alloy 400 ASTM B127.
Orifice Bore Sizes
Standard bore sizes are in
1
/
8
-in. (3.2 mm) increments from ½-in. (12.7 mm) to 4-in. (101.6 mm)
and in
1
/
4
-in. (6.3 mm) increments from 4
1
/
4
to 6-in. (107.95 mm to 152.4 mm).
If required, Emerson Process Management can determine the orifice bore. Basic flow data is
required at the time of order, see “Calculation Data Sheet” on page C-1.
Bore tolerances are within AGA and ASME specifications. Available options allow the user to
have the Rosemount 1495 sized for specific operating conditions. The “Orifice Plate Drawings” on
page 3-6 specifies the physical parameters of the orifice from a detailed sizing calculation.
1496 Flange Unions
Orifice Flanges (ANSI B16.36): Carbon Steel ASTM A105 / A350; Stainless Steel ASTM A182;
Alloy C-276 ASTM B564/575; or Alloy 400 ASTM B564/127; DIN 1.4571 (316Ti SST)
(1)
; DIN
1.0460 (carbon steel)
(1)
.
Flange Mounting Hardware
• Studs: Carbon Steel ASTM A193 Grade B7M
• Nuts: Carbon Steel ASTM A194 Gr 2H
• Gaskets: Non-asbestos ring type, Durlon
®
8500 Green, Klingersil C4400, or equivalent
• Pipe Plugs: Match flange material
Pressure Taps
Pressure tap connections are ½ -in. (12.7 mm) NPT and 180° apart as standard. The tap hole
diameter is ¼-in. (6.35 mm) for 2-in. (51 mm) size,
3 /
8
-in. (9.6 mm) for 2½ -in. (63.5 mm) size and
3-in. (76.2 mm), and ½-in. (12.7 mm) for 4-in. (101.6 mm) and larger sizes.
Return of Materials
To expedite the return process outside the United States, contact the nearest
sales representative.
Within the United States, call the Rosemount National Response Center using
the 1-800-654-RSMT (7768) toll-free number. This center, available 24 hours
a day, will assist you with any needed information or materials.
The center will ask for product model and serial numbers, and will provide a
Return Material Authorization (RMA) number. The center will also ask for the
name of the process material to which the product was last exposed.
The Rosemount National Response Center will detail the additional
information and procedures necessary to return goods exposed to hazardous
substances.
(1) May not be available in all world areas.
People who handle products exposed to a hazardous substance can avoid injury if they are
informed and understand the hazard. If the product being returned was exposed to a
hazardous substance as defined by OSHA, a copy of the required Material Safety Data
Sheet (MSDS) for each hazardous substance identified must be included with the returned
goods.