Rosemount 1495 User manual

www.rosemount.com
Reference Manual
00809-0100-4792, Rev CA
August 2010
Rosemount 1495 Orifice Plate, 1496 Orifice
Flange Union
Installation & Operation Manual
Rosemount 1495
Orifice Plate
Rosemount 1496
Orifice Flange Union

Reference Manual
00809-0100-4792, Rev CA
August 2010 Rosemount 1495, 1496
www.rosemount.com
Rosemount 1495 Orifice Plate
Rosemount 1496 Orifice Flange Union
Installation & Operation Manual
NOTICE
Read this manual before working with the product. For personal and system safety, and for
optimum product performance, make sure you thoroughly understand the contents before
installing, using, or maintaining this product.
Within the United States, Rosemount Inc. has two toll-free assistance numbers.
Customer Central: 1-800-999-9307 (7:00 a.m. to 7:00 p.m. CST)
Technical support, quoting, and order-related questions.
North American Response Center: 1-800-654-7768
24 hours a day – Includes Canada Equipment service needs.
For equipment service or support needs outside the United States, contact your local
Emerson Process Management representative.
The products described in this document are NOT designed for nuclear qualified
applications.
Using non-nuclear qualified products in applications that require nuclear qualified hardware
or products may cause inaccurate readings.
For information on Rosemount nuclear-qualified products, contact your local Emerson
Process Management Sales Representative.

Reference Manual
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August 2010
TOC-1
Rosemount 1495, 1496
SECTION 1
Introduction
Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Service Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Product Recycling/Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
SECTION 2
Installation,
Location, and
Orientation
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Receiving and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Installation Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Straight Run Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
SECTION 3
Hardware
Installation for
Rosemount 1495
Orifice Plate
1495 Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Bore Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Step 1: Determine the Proper Placement . . . . . . . . . . . . . . . . . . . 3-5
Step 2: Determine the Proper Orientation . . . . . . . . . . . . . . . . . . . 3-5
Step 3: Weld the Flange Union . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Step 4: Install the Orifice Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
1495 Dimensional Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
1495 Weights (estimated). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
SECTION 4
Hardware
Installation for
Rosemount 1496
Flange Union
1496 Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
1496 Flange Union Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Step 1: Determine the Proper Placement . . . . . . . . . . . . . . . . . . . 4-2
Step 2: Determine the Proper Orientation . . . . . . . . . . . . . . . . . . . 4-2
Step 3: Weld the Flange Union . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Step 4: Install the Orifice Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
1496 Dimensional Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
ASME B16.36-1996 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
1496 Weights (estimated). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
APPENDIX A
Specifications and
Reference Data
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Functional Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Sizing and How to Order. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
Rosemount 1495 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Options (Include with selected model number) . . . . . . . . . . . . . . . A-8
Rosemount 1496 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11
Options (Include with selected model number) . . . . . . . . . . . . . . A-12
Table of Contents

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TOC-2
APPENDIX B
Recommended
Installation
Requirements
Recommended Straight Run Requirements . . . . . . . . . . . . . . . . . . . .B-1
ISO 5167-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1
AGA Report No. 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-5
ASME MFC-3M-2004. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-9
Bolt Torque Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-12
APPENDIX C
Calculation Data Sheet

Reference Manual
00809-0100-4792, Rev CA
August 2010 Rosemount 1495, 1496
www.rosemount.com
Section 1 Introduction
Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 1-1
Service Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2
Product Recycling/Disposal . . . . . . . . . . . . . . . . . . . . . . .page 1-2
USING THIS MANUAL This product manual provides installation and configuration instructions forthe
Rosemount 1495 Orifice Plate, Rosemount 1496 Flange Union.
This section contains an explanation of each section of the manual and an
installation checklist.
Section 2: Installation, Location, and Orientation explains initial
inspection, operating limitations, and in what location and orientation to install
the orifice plate and associated hardware.
Section 3: Hardware Installation for Rosemount 1495 Orifice Plate
explains how to install the Orifice Plate in either existing orifice flanges or with
the Rosemount 1495 Orifice Plate.
Section 4: Hardware Installation for Rosemount 1496 Flange Union
explains how to install the 1496 Flange Union.
Appendix A: Specifications and Reference Data supplies reference and
specification data, as well as ordering information.
Appendix B: Recommended Installation Requirements shows the
recommended straight run requirementsand bolt torques used for orifice plate
installations.
Appendix C: Calculation Data Sheet

Reference Manual
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August 2010 Rosemount 1495, 1496
www.rosemount.com
SERVICE SUPPORT To expedite the return process outside of the United States, contact the
nearest Emerson Process Management 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
process material to which the product was last exposed.
Rosemount National Response Center representatives will explain the
additional information and procedures necessary to return goods exposed to
hazardous substances.
PRODUCT
RECYCLING/DISPOSAL
Recycling of equipment and packaging should be taken into consideration
and disposed of in accordance with local and national legislation/regulations.
Individuals who handle products exposed to a hazardous substance can avoid injury if they
are informed of 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.

Reference Manual
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August 2010 Rosemount 1495, 1496
www.rosemount.com
Section 2 Installation, Location, and
Orientation
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
Receiving and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . page 2-2
Installation Configuration . . . . . . . . . . . . . . . . . . . . . . . . . page 2-2
Straight Run Requirements . . . . . . . . . . . . . . . . . . . . . . . . page 2-3
This section describes the orientation, location and alignment limits for
installing the Rosemount 1495 Orifice Plate, 1496 Flange Union. Read it
thoroughly before starting the installation.
SAFETY MESSAGES Instructions and procedures in this section may require special precautions to
ensure the safety of the personnel performing the operations. Please refer to
the following safety messages before performing any operation in this section.
INSTALLATION
CHECKLIST
The following list is a summary of the steps required to complete a
Rosemount 1495 Orifice Plate installation. If this is an entirely new
installation, begin with step 1. If the Flange Union is already in place, verify
that the orifice flange size and rating match the recommended specifications,
and begin with step 5.
1. Determine where the Rosemount 1495 Orifice Plate, 1496 Flange
Union is to be placed within the piping system.
2. Establish the proper orientation as determined by the intended
service for the orifice plate.
3. Review Appendix B Recommended Installation Requirements.
4. Confirm the Rosemount 1495 and/or 1496 configurations.
5. Measure the pipe’s internal diameter (ID), preferably at 1 x ID from
the orifice flange (upstream or downstream), or at the tap location for
flange taps.
NOTE
Providing the pipe internal diameter at the time of purchase is necessary to
maintain published orifice plate accuracy.
6. Install the hardware. Refer to Section 3 for 1495 Orifice Plate
installation and Section 4 for 1496 Orifice Flange Union installation.
7. Check for leaks.
8. Commission the orifice plate flowmeter.
Failure to follow these installation guidelines could result in death or serious injury:
* Make sure only qualified personnel perform the installation.

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RECEIVING AND
INSPECTION
Rosemount 1495 Orifice Plates, 1496 Flange Unions are available in different
models and with different options, so it is important to inspect and know which
model you have before beginning installation.
Upon receipt of the shipment, check the packing list against the material
received and the purchase order. Report any damage to the carrier.
INSTALLATION
CONFIGURATION
The Orifice Flowmeter Assembly must be installed in the proper orientation
relative to the pipe and the fluid measured.
Gas Applications
Mount hardware upward to allow moisture to drain out and not fill the impulse
piping:
• Slope impulse piping at least one inch per foot (8 centimeters per
meter) downward from the transmitter toward the process connection.
Liquid Applications
Mount hardware downward to allow the escape of trapped vapor in the
impulse piping:
• Slope impulse piping at least one inch per foot (8 centimeters per
meter) upward from the transmitter toward the process connection.
• Vent all gas from the liquid piping legs.
• Prevent sediment deposits in the impulse piping.
• Keep the liquid head balanced on both legs of the impulse piping.

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Rosemount 1495, 1496
Steam Applications
Mount hardware to allow for a water leg in the impulse piping:
• In steam or other elevated temperature services, do not allow the
temperatures at the transmitter process flanges to exceed 300 °F (149
°C).
• Do not blow down impulse piping through the transmitter. Flush the
lines with the blocking valves closed and refill the lines with water
before resuming measurement
• Keep the liquid head balanced on both legs of the impulse piping.
Other Installation Considerations:
• Orient the high side of transmitter to measure upstream of the DP
element.
• Orient the low side of transmitter to measure downstream of the DP
element.
• Temperature taps and thermowells should be located downstream of
the DP element.
• Flow Conditioners and Straighteners are always located upstream of
the DP element. Refer to Appendix B Recommended Installation
Requirements.
• The handle of the orifice plate has the word “Inlet” stamped on the side
that faces upstream.
• To correct for installation effects, the transmitter should be zeroed after
mounting.
STRAIGHT RUN
REQUIREMENTS
To obtain published accuracy, sufficient straight run is required to produce a
fully developed flow profile. Shorter straight run lengths are possible, but
accuracy will be affected. Consult the Factory for further information. Refer to
Appendix B Recommended Installation Requirements for recommended
straight pipe lengths.
Flow

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Reference Manual
00809-0100-4792, Rev CA
August 2010 Rosemount 1495, 1496
www.rosemount.com
Section 3 Hardware Installation for
Rosemount 1495 Orifice Plate
1495 Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-5
Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-5
1495 Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . page 3-8
1495 Weights (estimated) . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-11
1495 TYPES This section provides hardware installation instructions for the Rosemount
1495 Orifice Plate. Installation procedures are similar for all services.
Service-specific instructions are provided where necessary. Otherwise, all
instructions in this section apply to all services. For more information on 1495
Orifice Plate types, see page A-6.
• Refer to transmitter installation instructions where applicable.
Bore Types
Figure 3-1. Concentric
Square-Edged (Standard)

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Figure 3-2. Conical Entrance
Bore (Option Code TC)
Figure 3-3. Eccentric Bore
(Option Code TE)

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Rosemount 1495, 1496
Figure 3-4. Segmental Bore
(Option Code TS)
Figure 3-5. Quadrant Edged
Bore (Option Code TQ)

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3-4
Figure 3-6. Restriction Orifice -
Beveled Bore (Option Code RO)

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Rosemount 1495, 1496
SAFETY MESSAGES Instructions and procedures in this section may require special precautions to
ensure the safety of the personnel performing the operations. Please refer to
the following safety messages before performing any operation in this section.
INSTALLATION
INSTRUCTIONS
Step 1: Determine the
Proper Placement
Determine the proper placement by ensuring adequate straight run. See
Appendix B: Recommended Installation Requirements.
Step 2: Determine the
Proper Orientation
To determine the proper orientation, see “Installation Configuration” on
page 2-2.
Step 3: Weld the Flange
Union
To weld the flange union, see “Step 3: Weld the Flange Union” on page 4-2.
Failure to follow these installation guidelines could result in death or serious injury:
* Make sure only qualified personnel perform the installation.
Personal hazard! To prevent injury, remove pressure and drain pipe assembly before
installing or removing orifice plate.
If the process fluid is caustic or otherwise hazardous, the procedure outlined here must be
modified as required to prevent death or serious injury to personnel.

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Step 4: Install the Orifice
Plate
General installation instructions to install (or remove) the orifice plate are as
follows:
1. Make certain the pipeline is not under pressure and has been drained
or purged.
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 new plate or remove existing plate for replacement or
inspection.
6. Install new gaskets when installing plate. It is recommended to install
new gaskets each time orifice flange union is separated.
7. Release the flange union by turning Jackscrews counter clockwise.
8. Replace studs.
9. Tighten studs in a star pattern. See “Bolt Torque Recommendations”
on page B-12.
NOTE
Refer to published standards (AGA3, ASME MFC-3M, ISO 5167 for
installation guidelines.
Once the orifice plate is installed, proceed by installing connection systems,
manifolds, and/or transmitters per manufacturer’s recommended
specifications and plant standards.
NOTE
Universal style orifice plates are designed for installation into junior or senior
orifice fittings as well as into RTJ Plate Holders.

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Rosemount 1495, 1496
1495PC Orifice Paddle Type
(Paddle, Square edged, Concentric)
1495PG Orifice Paddle Type
(Paddle, Square edged, Concentric, Spiral finish)
Line
Size
Diameter for Paddle Type (1) Handle
Length
Handle
Width
150# 300# 600# 900# 1500# 2500#
2-in. 4.125
(104.78) 4.375 (111.13) 4.375 (111.13) 5.625 (142.875) 5.625 (142.875) 5.750 (146.05) 4.0 (101.6) 1.00 (25.4)
21/2-in. 4.875
(123.82) 5.125 (130.18) 5.125 (130.18) 6.500 (165.1) 6.500 (165.1) 6.625 (168.275) 4.0 (101.6) 1.00 (25.4)
3-in. 5.375
(136.53) 5.875 (149.23) 5.875 (149.23) 6.625 (168.275) 6.875 (174.625) 7.750 (196.85) 4.0 (101.6) 1.00 (25.4)
4-in. 6.875
(174.63) 7.125 (180.98) 7.625 (193.7) 8.125 (206.375) 8.250 (209.55) 9.250 (234.95) 4.0 (101.6) 1.00 (25.4)
6-in. 8.750
(222.25) 9.875 (250.83) 10.500 (266.7) 11.375 (288.925) 11.125 (282.575) 12.500 (317.5) 4.0 (101.6) 1.00 (25.4)
8-in. 11.000
(279.4) 12.125 (307.98) 12.625 (320.675) 14.125 (358.775) 13.875 (352.425) 15.250 (387.35) 6.0 (127) 1.5 (38.1)
10-in. 13.375
(339.73) 14.250 (361.95) 15.750 (400.05) 17.125 (434.975) 17.125 (434.975) 18.750 (476.25) 6.0 (152.4) 1.5 (38.1)
12-in. 16.125
(409.58) 16.625 (422.26) 18.000 (457.2) 19.625 (498.475) 20.500 (520.7) 21.625 (549.275) 6.0 (152.4) 1.5 (38.1)
14-in. 17.750
(450.85) 19.125 (485.78) 19.375 (339.725) 20.500 (520.7) 22.750 (577.85) —6.0 (152.4) 1.5 (38.1)
16-in. 20.250
(514.35) 21.250 (539.75) 22.250 (565.15) 22.625 (574.675) 25.250 (641.35) —6.0 (152.4) 1.5 (38.1)
18-in. 21.500
(546.1) 23.375 (593.725) 24.000 (609.6) 25.000 (635.00) 27.625 (701.675) —6.0 (152.4) 1.5 (38.1)
20-in. 23.750
(603.25) 25.625 (650.875) 26.750 (679.45) 27.375 (695.325) 29.625 (752.475) —6.0 (152.4) 1.5 (38.1)
24-in. 28.125
(714.375) 30.375 (771.525) 31.000 (787.4) 32.875 (835.025) 35.500 (901.7) —6.0 (152.4) 1.5 (38.1)
(1) Measurement is in inches (millimeters)
1495UC Orifice Universal Type
(Universal, Square edged, Concentric Line Size Diameter for Universal Type(1)
2-in. 2.437 (61.8998)
21/2-in. 2.812 (71.4248)
3-in. 3.437 (87.2998)
4-in. 4.406 (111.912)
6-in. 6.437 (163.5)
8-in. 8.437 (214.3)
10-in. 10.687 (271.45)
12-in. 12.593 (319.862)
14-in. 14.000 (355.6)
16-in. 16.000 (406.4)
18-in. 18.000 (457.2)
20-in. 20.000 (508)
24-in. 24.000 (609.6)
(1) Measurement is in inches (millimeters)
Diameter Handle
Length
Handle
Width
Diameter Handle
Length
Handle
Width
Diameter

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1495 DIMENSIONAL
DRAWINGS
1495PC Paddle Type Orifice Plate
(DIN, Paddle, Square edged, Concentric)
TABLE 1. 1495 Orifice Plate Dimensions(1)
DN
Diameter (max) – by flange rating Handle
Width
Handle
Length
PN 10 PN 16 PN 25 PN 40 PN 63/64 PN 100
DN 50 4.21 (107) 4.21 (107) 4.21 (107) 4.21 (107) 4.45 (113) 4.69 (119) 1.5 (40) 6.3 (160)
DN 65 5 (127) 5 (127) 5 (127) 5 (127) 5.43 (138) 5.67 (144) 1.5 (40) 6.3 (160)
DN 80 5.6 (142) 5.6 (142) 5.6 (142) 5.6 (142) 5.82 (148) 6.06 (154) 1.5 (40) 6.3 (160)
DN 100 6.38 (162) 6.38 (162) 6.61 (168) 6.61 (168) 6.85 (174) 7.09 (180) 1.5 (40) 6.3 (160)
DN 125 7.56 (192) 7.56 (192) 7.64 (194) 7.63 (194) 8.27 (210) 8.54 (217) 1.5 (40) 6.3 (160)
DN 150 8.58 (218) 8.58 (218) 8.82 (224) 8.82 (224) 9.72 (247) 10.12 (257) 1.5 (40) 6.3 (160)
DN 200 10.74 (273) 10.74 (273) 11.18 (284) 11.42 (290) 12.17 (309) 12.76 (324) 1.5 (40) 6.3 (160)
DN 250 12.91 (328) 12.95 (329) 13.39 (340) 13.86 (352) 14.33 (364) 15.39 (391) 1.5 (40) 6.3 (160)
DN 300 14.88 (378) 15.11 (384) 15.75 (400) 16.42 (417) 16.69 (424) 18.03 (458) 1.5 (40) 6.3 (160)
DN 350 17.24 (438) 17.48 (444) 17.99 (457) 18.66 (474) 19.13 (486) 20.16 (512) 1.5 (40) 6.3 (160)
DN 400 19.25 (489) 19.49 (495) 20.24 (514) 21.49 (546) 21.38 (543) 22.52 (572) 1.5 (40) 6.3 (160)
DN 450 21.22 (539) 21.85 (555) 22.24 (565) 22.48 (571) Not Applicable Not Applicable 1.5 (40) 6.3 (160)
DN 500 23.39 (594) 24.29 (617) 24.57 (624) 24.72 (628) 25.87 (657) 27.72 (704) 1.5 (40) 8.0 (200)
DN 600 27.36 (695) 28.9 (734) 28.78 (731) 29.41 (747) 30.08 (764) 32.01(813) 1.5 (40) 8.0 (200)
(1) Measurement is in inches (millimeters)
Handle Width
Diameter Handle
Length