Rosemount 405 User manual

www.rosemount.com
Reference Manual
00821-0100-4810, Rev AA
March 2004
405 Compact Orifice Series and
1595 Conditioning Orifice Plate
Flow Test Data Book and Flow Handbook

Reference Manual
00821-0100-4810, Rev AA
March 2004
www.rosemount.com
405 and 1595
405 Compact Orifice Series and
1595 Conditioning Orifice Plate
Flow Test Data Book
Emerson Process Management satisfies all obligations coming from legislation to
harmonize product requirements in the European Union
NOTICE
Read this manual before working with the product. For personal and system safety, and for
optimum product performance, make sure to thoroughly understand the contents before
installing, using, or maintaining this product.
Customer Central
1-800-999-9307 (7:00 a.m. to 7:00 P.M. CST)
National Response Center
1-800-654-7768 (24 hours a day)
Equipment service needs
International
1-[phone]
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 an Emerson Process
Management Sales Representative.

Reference Manual
00821-0100-4810, Rev AA
March 2004 405 and 1595
www.rosemount.com
Table of Contents
SECTION 1
405 Compact Orifice
Series and 1595
Conditioning Orifice
Plate
Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Structural Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
In-House Performance Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Independent Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
SECTION 2
Theory of Operation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Technical Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Compact Orifice Plate Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Conditioning Orifice Plate Technology. . . . . . . . . . . . . . . . . . . . . . . . . 2-2
SECTION 3
Test Facilities and Flow
Tests
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Testing Laboratories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Gravimetric Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Flow Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Run to Run Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Meter Installed 2D Downstream of the Following Fittings . . . . . . . 3-3
Run to Run Repeatability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Single Elbow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
Double Elbows In Plane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Double Elbows Out of Plane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34
Swirl Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40
8 x 6-in. Reduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-48
Butterfly Valve at 75% Open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52
SECTION 4
Flow Calculations
Rosemount 405C and 1595 Conditioning Orifice Plate . . . . . . . . . . . . 4-1
Calculated Values and Variables Designations . . . . . . . . . . . . . . . 4-1
Equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Rosemount 405P Compact Orifice Plate . . . . . . . . . . . . . . . . . . . . . . . 4-4
Calculated Values and Variables Designations . . . . . . . . . . . . . . . 4-4
Equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Flow Calculation Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Reference Manual
00821-0100-4810, Rev AA
March 2004
405 and 1595
TOC-2

Reference Manual
00821-0100-4810, Rev AA
March 2004
www.rosemount.com
405 and 1595
Section 1 405 Compact Orifice Series and
1595 Conditioning Orifice Plate
Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2
Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-3
PRODUCT FEATURES The Rosemount 405 Compact Orifice Series (standard and condition plate
options) and 1595 Conditioning Orifice Plate primary flow elements maintain
the traditional strengths of orifice plate technology with improved features /
performance.
The strengths of the 405 include:
• More Economical than a Traditional Orifice Plate Installation
• Machined from a Single Cast Part
• Accurate and Repeatable
• Shorter Straight Run Requirements (405C - 2D Upstream and 2D
Downstream)
• Self Centering Mechanism
• Based on ASME/ISO Corner Tap Design
The strengths of the 1595 include:
• Based on the most common primary element in the world with
established standards for manufacture and installation.
• Easy to use, prove, and troubleshoot
• Accurate and Repeatable
• Shorter Straight Run Requirements (2D Upstream and 2D
Downstream)
• Based on ASME/ISO/AGA standards
The Rosemount 405 and 1595 primary flow elements are sized using
Rosemount's Instrument Toolkit sizing program. This program provides
accurate flow calculations using installation details and fluid properties for the
flowmeter and presents this on a calculation data sheet or specification sheet.

Reference Manual
00821-0100-4810, Rev AA
March 2004
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405 and 1595
TESTING Tests performed on the 405 / 1595 primary flow elements are divided into
three major categories:
• Mechanical and structural testing
• In-house performance testing
• Independent laboratory testing
All categories are on going and continue to be a part of the current
Rosemount test program for the 405 / 1595 primary flow elements.
Structural Testing Rosemount performed integrity testing for:
• Allowable stress limits
• Hydrostatic Pressure
• Thermal Effects
•Vibration
At the following labs:
• Hauser Laboratories, Boulder, CO
• Rosemount Vibration Laboratory, Eden Prairie, MN
In-House Performance
Testing
Hundreds of flow tests were performed in the Rosemount flow laboratory in 2
to 10-in. (50.8 to 254 mm) pipeline, using independently certified magnetic
flowmeters or the laboratory's gravimetric system as primary reference.
Straight run requirements, run to run repeatability (w/ and w/o disassembly /
re-assembly), pipe schedule, and sensitivity to centering are some of the
in-house performance tests that were performed on the Rosemount 405P
Compact Orifice Plate primary element.
Baseline straight run, run to run repeatability (w/ and w/o disassembly /
re-assembly), straight run requirements, pipe schedule, sensitivity to
centering, and gaskets are just a few of the in-house performance tests that
were conducted on the Rosemount 405C and 1595 Conditioning Orifice Plate
primary elements. Extensive testing was also performed to determine
minimum straight run requirements after the following upstream fittings; single
elbow, double elbows in plane, double elbows out of plane, reduction,
expansion, and butterfly valve. Performance was also evaluated with up to 20
degrees of swirl induced.
Every Rosemount 405C and 1595 Conditioning Orifice Plate primary element
is flow calibrated as part of the manufacturing process. A calibration report for
either a 3 point (option code WC) or 10 point (option code WD) calibration can
be provided for shipment with the product.
Independent Testing Rosemount 405 and 1595 primary flow element models were tested at three
independent laboratories:
• Colorado Engineering Experiment Station, Inc. (CEESI)
• Southwest Research Institute (SwRI)
• Foxboro Co. Flow Lab
Certified flow-data sheets were supplied from each of these facilities.
Representative samples of tests conducted at Rosemount and independent
laboratories are in Section 3: Test Facilities and Flow Tests.

Reference Manual
00821-0100-4810, Rev AA
March 2004
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405 and 1595
PRODUCT
SPECIFICATIONS
The above testing has enabled Rosemount to provide product which
conforms to the following specifications:
TABLE 1. Rosemount 405 Compact Orifice Flowmeter
Type Beta Discharge Coefficient Uncertainty
Conditioning 0.4 0.50%
Conditioning 0.65 0.75%
Standard (1/2to 11/2-in. line size)(1)
(1) Discharge Coefficient Uncertainty for 1/2-in. units with Beta = 0.65 is ±2.25% (2.5% of flow).
0.4 1.75%
Standard (1/2to 11/2-in. line size)(1) 0.65 1.75%
Standard (2 to 8-in. line size) 0.4 1.25%
Standard (2 to 8-in. line size) 0.65 1.25%
TABLE 2. Rosemount 1595 Discharge Coefficient Uncertainty
Beta Ratio Accuracy
β= 0.40 0.50%
β= 0.65 0.75%

Reference Manual
00821-0100-4810, Rev AA
March 2004
1-4
405 and 1595