Rosemount Manual: Rosemount 405 Compact Orifice Series and Rosemount 1595 Conditioning Orifice Plate Manuals & Guides

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Reference Manual

00821-0100-4810, Rev EB

May 2022

Rosemount™ 405 Compact Orifice Series and Rosemount 1595 Conditioning Orifice Plate

Flow Test Data Book and Flow Handbook

Safety messages

WARNING

Read this manual before working with the product. For personal and system safety, and for optimum product performance, ensure you 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-(952) 906-8888

NOTICE

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 Sales Representative.

WARNING

Physical access

Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end users’ equipment. This could be intentional or unintentional and needs to be protected against.

Physical security is an important part of any security program and fundamental to protecting your system. Restrict physical access by unauthorized personnel to protect end users’ assets. This is true for all systems used within the facility.

Emerson satisfies all obligations coming from legislation to harmonize product requirements in the European Union.

Reference Manual Contents

00821-0100-4810 May 2022

Chapter 1 Introduction.............................................................................................................. 5

1.1 Product features.......................................................................................................................... 5

1.2 Testing........................................................................................................................................ 5

1.3 Product specifications..................................................................................................................7

Chapter 2 Theory of operation................................................................................................... 9

2.1 Overview..................................................................................................................................... 9

2.2 Technical detail............................................................................................................................9

2.3 Compact orifice plate technology..............................................................................................10

2.4 Conditioning orifice plate technology........................................................................................11

Chapter 3 Test facilities and flow tests......................................................................................13

3.1 Overview................................................................................................................................... 13

3.2 Testing laboratories...................................................................................................................13

3.3 Gravimetric testing....................................................................................................................13

3.4 Flow tests.................................................................................................................................. 14

3.5 Run to run repeatability............................................................................................................. 16

3.6 Single elbow tests......................................................................................................................39

3.7 Double elbows in plane..............................................................................................................44

3.8 Double elbows out of plane....................................................................................................... 50

3.9 Swirl generator.......................................................................................................................... 57

3.10 8 x 6-in reduction.....................................................................................................................68

3.11 Butterfly valve at 75 percent open........................................................................................... 72

3.12 Gate valve................................................................................................................................76

Chapter 4 Flow calculations..................................................................................................... 79

4.1 Rosemount 405C and 1595 Conditioning Orifice Plate.............................................................. 79

4.2 Rosemount 405P Compact Orifice Plate.................................................................................... 83

4.3 Flow calculation tables...............................................................................................................85

Rosemount 405 and 1595 3

Contents Reference Manual

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Reference Manual Introduction

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1 Introduction

1.1 Product features

The Rosemount 405 Compact Orifice Series (standard and condition plate options) and Rosemount 1595 Conditioning Orifice Plate primary flow elements maintain the traditional strengths of orifice plate technology with improved features/performance.

The strengths of the Rosemount 405 include:

• More economical than a traditional orifice plate installation

• Accurate and repeatable

• Short straight run requirements (405C — 2D upstream and 2D downstream)

• Self centering mechanism

• Based on ASME/ISO corner tap design

The strengths of the Rosemount 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

• Short 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.

1.2 Testing

Tests performed on the Rosemount 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 ongoing and continue to be a part of the current Rosemount test program for the Rosemount 405/1595 primary flow elements.

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Introduction

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Reference Manual

1.2.1 Structural testing

Emerson 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

1.2.2

In-house performance testing

Emerson conducted extensive in-house testing on Rosemount 1595, 405C, and 405P Orifice Plate Primary Elements to verify performance standards.

Emerson performed flow tests in the Rosemount flow laboratory in 2 in (51 mm) to 10 in (254 mm) pipeline, using independently certified magnetic flow meters or the laboratory's gravimetric system as primary reference.

In house performance tests

• Straight run requirements

• Run to run repeatability (with and without disassembly/re-assembly)

• Pipe adjustment factors

• Sensitivity to centering

Testing was also performed to determine minimum straight run requirements after the following upstream disturbances:

• Single elbow

• Double elbows in plane

• Double elbows out of plane

• Reduction

• Expansion

• Butterfly valve

Emerson also evaluated performance with up to 20 degrees of induced swirl.

1.2.3

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Independent testing

Four independent laboratories tested the Rosemount 405 and 1595 primary flow element models.

• Colorado Engineering Experiment Station, Inc. (CEESI)

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Introduction

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• Southwest Research Institute (SwRI)

• Foxboro Co. Flow Lab

• Daniel Flow Lab

Each facility supplied certified flow data sheets.

Related information

Test facilities and flow tests

1.3 Product specifications

With testing, Emerson has confirmed that these products conform to the following specifications:

Table 1-1: Rosemount 405 Compact Orifice Flow Meter

Type Beta Discharge coefficient

uncertainty

Conditioning 0.4 ±0.50%

Conditioning 0.50 ±1.00%

Conditioning 0.65 ±1.00%

Standard (½ to 1½-in line size)

Standard (2 to 8-in line size) 0.4 ±1.25%

Standard (2 to 8-in line size) 0.50 ±1.25%

Standard (2 to 8-in line size) 0.65 ±1.25%

(1) Discharge coefficient uncertainty for ½-in units with Beta = 0.65 is ±2.25% (2.5% of flow).

(1)

Table 1-2: Rosemount 1595 Conditioning Orifice Plate

Beta ratio Discharge coefficient uncertainty

β = 0.40 ±0.50%

β = 0.50 ±1.00%

β = 0.65 ±1.00%

1.3.1 Straight pipe requirement

0.4 ±1.75%

0.50 ±1.75%

0.65 ±1.75%

Use the appropriate lengths of straight pipe upstream and downstream of the Rosemount 405 to minimize the effects of moderate flow disturbances in the pipe.

Table 1-4 lists recommended lengths of straight pipe per ISO 5167.

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Table 1-3: Rosemount 405C/1595 straight pipe requirements

Location of flow disturbance

(1)

Upstream (inlet) side of primary

Beta 0.40 0.50 0.65

Reducer (1 line size) 2 2 2

Single 90° bend or tee 2 2 2

Two or more 90° bends

2 2 2

in the same plane

Two or more 90° bends

2 2 2

in different plane

Up to 10° of swirl 2 2 2

Butterfly valve (75% to

2 N/A N/A

100% open)

Downstream (outlet) side

N/A 2 2 2

of primary

(1) Consult an Emerson representative if disturbance is not listed.

Table 1-4: Rosemount 405P straight pipe requirements

Location of flow disturbance

(1)(2)(3)

Upstream (inlet) side of primary

Beta 0.40 0.50 0.65

Reducer 5 8 12

Single 90° bend or tee 16 22 44

Two or more 90° bends

10 18 44

in the same plane

Two or more 90° bends

50 75 60

in different plane

Expander 12 20 28

Ball / gate valve fully open 12 12 18

Downstream (outlet) side

N/A 6 6 7

of primary

(1) Consult an Emerson representative if disturbance is not listed. (2) Recommended lengths represented in pipe diameters per ISO 5167. (3) Refer to ISO 5167 for recommended lengths when using flow straighteners.

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Reference Manual Theory of operation

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2 Theory of operation

2.1 Overview

The Rosemount 405 and 1595, based on orifice plate technology, are devices used to measure the flow of a liquid, gas, or steam fluid that flows through a pipe.

These devices enable flow measurement by creating a differential pressure (DP) that is proportional to the square of the velocity of the fluid in the pipe, in accordance with Bernoulli's theorem. This DP is measured and converted into a flow rate using a secondary device, such as a DP pressure transmitter.

The flow is related to DP through the following relationship.

Figure 2-1: Relationship of flow to differential pressure

where:

Q = Flow rate

K = Units conversion factor, discharge coefficient, and other factors

DP = Differential Pressure

ρ = Density

Related information

Flow calculations

2.2 Technical detail

Traditional orifice plate flow meters are based on Bernoulli's theorem, which states that along any one streamline in a moving fluid, the total energy per unit mass is constant, being made up of the potential energy (the pressure energy), and the kinetic energy of the fluid.

Figure 2-2: Bernoulli's theorem of differential pressure

where:

P1 = Upstream pressure

P2 = Downstream pressure

ρ1 = Upstream density

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ρ2 = Downstream density

V1 = Upstream velocity

V2 = Downstream velocity

When fluid passes through the orifice, the velocity of the fluid through the orifice increases. This increase in fluid velocity causes the kinetic energy of the fluid immediately downstream of the orifice plate to increase, while simultaneously decreasing the static pressure energy of the fluid at that same point. By sensing the static pressure on the upstream and downstream sides of the orifice plate, a flow meter can determine the fluid velocity.

Some assumptions were made in deriving the theoretical equation, which in practice are not valid:

1. Energy is conserved in the flow stream.

2. Pressure taps are at ideal locations.

3. Velocity profile is flat.

These items are corrected by the discharge coefficient which is derived from experimental data and is different for each primary element.

Figure 2-3: Discharge coefficient

Where:

A = Actual flow

T = Theoretical flow

C = Discharge coefficient

2.3 Compact orifice plate technology

The Rosemount 405P Compact Orifice Plate is a wafer style meter and has a traditional style orifice plate integrally machined into the wafer. The wafer is one inch thick. Meter inlet and outlet sections in this wafer are sized for schedule 40 pipe.

If the operator installs meter in a pipe where the schedule is something other than schedule 40, they must make adjustments in the flow calculations to accommodate the pipe schedule mismatch.

Orifice plates work well when the velocity profile is symmetrical about the longitudinal axis of the pipe in which the fluid is flowing. In such cases, where the flow is conditioned or there is an adequate amount of straight run, the highest velocity fluid is along the central axis of the pipe, coaxial with the orifice of the conditioning plate. This is the situation under which the discharge coefficient was determined and is how most standard orifice plates are used. However, if you install an orifice plate immediately after an upstream fitting, the velocity profile will be skewed. This may take the form of profile distortion and/or swirl.

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Additionally, secondary flows may develop after the fitting. Any of these conditions will cause a subsequent change in the performance of the orifice plate. In general, profile distortion results in higher differential pressure being reported, and swirl results in lower differential pressure being reported. The differential pressure thus produced across the standard orifice plate will not be a true indication of the rate of fluid flow in this situation.

2.4 Conditioning orifice plate technology

The Rosemount 405C and 1595 Conditioning Orifice Plate has the added advantage of being able to operate with reduced straight run requirements.

With its multiple orifices in the flow stream, the plate much less susceptible to velocity profile distortion, swirl, and secondary flows. If the velocity profile is skewed, each of the orifices will conduct a part of the total fluid flow within the pipe. The fluid pressure on the downstream side of the conditioning plate that is attributable to each of the separate orifices will be averaged within the fluid to provide an average downstream pressure. The average downstream pressure is compared with the upstream pressure to provide an average differential pressure for whatever velocity profile is presented to the multiple orifice plate, resulting in an accurate measurement of the rate of fluid flow in the pipe.

Emerson flow calibrates every Rosemount 405C and 1595 as part of the manufacturing process. The purpose of this calibration is to determine a calibration factor which is applied to the flow calculations as an adjustment to correct for bias error from the ISO-5167 discharge coefficient equations. This results in an accurate flow meter which conforms to the ISO-5167 equations.

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Reference Manual Test facilities and flow tests

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3 Test facilities and flow tests

3.1 Overview

The following descriptions of tests and testing methods are abbreviated versions.

For detailed descriptions of the individual laboratories, contact the facility in question.

3.2 Testing laboratories

Rosemount Boulder, Colorado Flow Laboratory

Emerson tests and calibrates the Rosemount 405 and 1595 in water. Line sizes available for testing range from 0.5 in (13 mm) to 12 in (305 mm). A secondary set of reference magnetic flow meters, routinely calibrated against a gravimetric primary standard, provide an uncertainty of 0.25 percent. Calibrations that use the primary-measurement device, gravimetric method, can be calibrated with an uncertainty of 0.1 percent.

SwRI Gas Research Institute (GRI), Meter Research Facility (MRF)

Flow meters are tested and calibrated on a recirculating natural gas loop. A sonic nozzle bank provides secondary flow calibration. This permits high repeatability and excellent test accuracy's via calibration against the gravimetric primary standards. The sonic nozzle banks produce an accuracy on flow rate of 0.25 percent of reading.

Colorado Engineering Experiment Station (CEESI), Inc.

The flow lab uses critical flow venturis (CFV) for calibrations in air. The uncertainty in mass flow rate is estimated to be ±0.50 percent. Calibrations are traceable by the National Institute of Standards and Technology (NIST).

Foxboro Co. Flow Lab

The flow lab uses a gravimetric system for water calibrations. Calibrations are NIST traceable.

Daniel Flow Lab

The flow lab uses a dynamic weighing system for water calibrations. Calibrations are NIST traceable.

3.3 Gravimetric testing

The technician selects piping to match the inside diameter of the flow meter being tested. They normally use carbon steel piping for these tests. The technician also carefully installs and checks gaskets between pipe flanges to ensure that they not interfere with the flow. They make sure that proper alignment of the flow meter with the piping is maintained.

After all piping is secured with bolts, couplings, or clamps, the technician gradually introduces water into the line. They set flow to purge air from the system and to bring the flow meter to steady-state temperature. After operating the system for a period of time,

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they purge air from all instrumentation lines, instruments, and the flow meter. After air purging, they check all instrumentation for zero-flow indication.

Technicians set the flow rate by adjusting the control valve at the end of the test line to a desired flow. They allow this flow to stabilize and reach steady-state condition. This condition is achieved when the average flow-meter readout is constant with time. At this point, the technician begins the calibration run.

A calibration run consists of simultaneously recording the flow meter output while the weighing tank is filled and timing the filling process. The technician activates and deactivates electronic timers using electric eyes on the switch way. During this time, they record outputs at 1 Hz. The duration of the run is typically between 50 and 100 seconds.

In addition to recording weight and time, the technician also records the water temperature, air temperature at the weigh tank, and air temperature adjacent to the readout. They also record barometric pressure at the start and at the end of the test.

After a run is completed, the technician resets the control valve to another flow rate and repeats the process. They normally conduct runs at 10 different flow rates, approximately equally spaced from the maximum to the minimum flow rates. In some cases, the maximum flow obtainable by the test facility determines the upper flow limit of the test.

3.4 Flow tests

3.4.1 Run to run repeatability

Meter section was assembled, tested, disassembled, re-assembled and re-tested.

• Rosemount 405P, water, 06442, 1.5-in, 0.40 beta

• Rosemount 405P, water, 13443, 2-in, 0.65 beta

• Rosemount 405P, water, 26171, 4-in, 0.65 beta

• Rosemount 405C, water, 08261, 2-in, 0.40 beta

• Rosemount 405C, water, 12402, 2-in, 0.60 beta

• Rosemount 405C, water, 16261, 4-in, 0.40 beta

• Rosemount 405C, water, 24061, 4-in, 0.60 beta

• Rosemount 1595, water, AT24261, 6-in, 0.40 beta

• Rosemount 1595, water, AT39422, 6-in, 0.65 beta

• Rosemount 1595, water, AT48003, 12-in, 0.40 beta

Related information

Run to run repeatability

3.4.2

14 Emerson.com/Rosemount

Meter installed 2D downstream of the following fittings

Single elbow

• Rosemount 405C, water, 08261, 2-in, 0.40 beta

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• Rosemount 405C, natural gas, 08261, 2-in, 0.40 beta

Double elbows in plane

• Rosemount 405C, water, 08261, 2-in, 0.40 beta

• Rosemount 405C, natural gas, 08261, 2-in, 0.40 beta

• Rosemount 405C, water, 12402, 2-in, 0.60 beta

Double elbows out of plane

• Rosemount 405C, water, 08261, 2-in, 0.40 beta

• Rosemount 405C, natural gas, 08261, 2-in, 0.40 beta

• Rosemount 405C, water, 12402, 2-in, 0.60 beta

Swirl generator

• Rosemount 405C, water, 08261, 2-in, 0.40 beta

• Rosemount 405C, air, 08261, 2-in, 0.40 beta

• Rosemount 405C, natural gas, 08261, 2-in, 0.40 beta

• Rosemount 405C, water, 04D407574, 4-in, 0.40 beta

• Rosemount 1595, Water, AT24261, 6-in, 0.40 beta

8 × 6-in reduction

• Rosemount 1595, water, A24261, 6-in, 0.40 beta

• Rosemount 1595, water, A39421, 6-in, 0.65 beta

Butterfly valve at 75% open

• Rosemount 405C, water, 12402, 2-in, 0.60 beta

• Rosemount 1595, water, A24261, 6-in, 0.40 beta

Gate valve

• Rosemount 1595, water, 04D407574, 4-in, 040 beta

Related information

Single elbow tests Double elbows in plane Double elbows out of plane Swirl generator 8 x 6-in reduction Butterfly valve at 75 percent open Gate valve

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3.5 Run to run repeatability

Sensor serial number 06442

Test laboratory

Model

Fluid

Sensor serial number

Beta ratio

Pipe size

Pipe inner dimension

Test date

Rosemount Boulder, Colorado flow lab

Rosemount 405P

Water

06442

0.40

1.5 in (38 mm) schedule 40

1.61 in (40.9 mm)

March 8, 2001

Figure 3-1: Sensor 06442 test results

Table 3-1: Test 1, sensor serial number 06442

Data point number

1 66.7 19.3 28.2 1.95 1.0204 62.3168 254.354 22.88 4.40E +040.6009

2 66.7 19.3 28.2 1.94 1.0202 62.3167 254.120 22.88 4.40E +040.6010

3 66.7 19.2 28.2 1.95 1.0306 62.3169 156.639 17.98 3.46E +040.6016

4 66.7 19.3 28.2 1.95 1.0203 62.3167 137.781 16.87 3.24E +040.6018

16 Emerson.com/Rosemount

Temperature Pressure Viscos-

ity

°F °C psig barg cP lb/ft

Density Differen

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

Reference Manual Test facilities and flow tests

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Table 3-1: Test 1, sensor serial number 06442 (continued)

Data point number

Temperature Pressure Viscos-

Density Differen

ity

°F °C psig barg cP lb/ft

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

5 66.7 19.3 28.2 1.94 1.0204 62.3169 91.223 13.74 2.64E +040.6026

6 66.9 19.4 28.1 1.94 1.0172 62.3151 56.368 10.82 2.09E +040.6035

7 66.8 19.4 28.1 1.94 1.0179 62.3154 57.750 10.95 2.11E +040.6034

8 67.0 19.5 28.1 1.93 1.0155 62.3142 30.006 7.91 1.53E +040.6046

9 67.1 19.5 28.0 1.93 1.0137 62.3132 17.030 5.97 1.15E +040.6055

10 67.3 19.6 28.0 1.93 1.0116 62.3124 7.628 4.01 7.77E +030.6073

11 67.5 19.7 28.0 1.93 1.0091 62.3104 4.359 3.03 5.90E +030.6088

12 67.5 19.7 28.0 1.93 1.0085 62.3103 4.342 3.03 5.89E +030.6089

Table 3-2: Test 2, sensor serial number 06442

Data point number

1 72.7 22.6 28.2 1.94 0.9415 62.2692 248.988 22.65 4.72E +040.6009

2 72.7 22.6 28.1 1.94 0.9409 62.2688 255.919 22.95 4.78E +040.6006

3 72.8 22.7 28.1 1.93 0.9394 62.2677 156.139 17.96 3.75E +040.6015

4 72.9 22.7 28.0 1.93 0.9385 62.2671 146.624 17.40 3.63E +040.6015

5 73.1 22.8 28.0 1.93 0.9359 62.2653 91.484 13.77 2.88E +040.6026

6 73.4 23.0 27.9 1.92 0.9330 62.2633 57.017 10.89 2.29E +040.6035

7 73.3 22.9 27.9 1.92 0.9337 62.2637 57.898 10.97 2.30E +040.6035

8 73.7 23.2 27.9 1.92 0.9283 62.2598 30.126 7.93 1.67E +040.6049

Temperature Pressure Viscos-

Density Differen

ity

°F °C psig barg cP lb/ft

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

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Table 3-2: Test 2, sensor serial number 06442 (continued)

Data point number

9 74.2 23.4 27.8 1.92 0.9230 62.2558 17.114 5.98 1.27E +040.6054

10 75.1 23.9 27.8 1.91 0.9122 62.2480 7.602 4.00 8.59E +030.6070

11 76.0 24.5 27.7 1.91 0.9017 62.2395 4.403 3.05 6.62E +030.6077

12 76.1 24.5 27.7 1.91 0.9008 62.2384 4.347 3.03 5.59E +030.6079

Temperature Pressure Viscos-

ity

°F °C psig barg cP lb/ft

Density Differen

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

Sensor serial number 13443

Test laboratory

Model

Fluid

Sensor serial number

Beta ratio

Pipe size

Rosemount Boulder, Colorado flow lab

Rosemount 405P

Water

13443

0.65

2 in (51 mm) schedule 40

Pipe inner dimension

Test date

2.067 in (52.50 mm)

January 17, 2001

Figure 3-2: Sensor 13443 test results

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Table 3-3: Test 1, sensor serial number 13443

Data point number

Temperature Pressure Viscos-

Density Differen

ity

°F °C psig barg cP lb/ft

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

1 66.3 19.1 28.8 1.92 1.0250 62.3192 248.526 109.75 1.64E +050.6046

2 66.4 19.1 28.2 1.94 1.0247 62.3190 182.047 93.84 1.40E +050.6041

3 66.4 19.1 28.4 1.96 1.0238 62.3186 106.591 71.81 1.07E +050.6041

4 66.5 19.2 28.5 1.96 1.0228 62.3180 61.849 54.84 8.19E +040.6057

5 66.5 19.2 28.5 1.96 1.0224 62.3178 61.803 84.83 8.19E +040.6058

6 66.5 19.2 28.4 1.96 1.0220 62.3176 51.317 49.97 7.47E +040.6059

7 66.6 19.2 28.4 1.96 1.0207 62.3169 31.492 39.19 5.86E +040.6066

8 67.8 19.3 28.3 1.95 1.0188 62.3159 15.869 27.99 4.20E +040.6103

9 67.0 19.4 28.2 1.94 1.0160 62.3145 5.781 17.00 2.55E +040.6140

10 67.2 19.6 28.1 1.94 1.0129 62.3129 3.783 13.80 2.08E +040.6161

11 67.2 19.5 28.1 1.94 1.0135 62.3130 3.820 13.86 2.09E +040.6160

Table 3-4: Test 2, sensor serial number 13443

Data point number

1 66.5 19.2 27.8 1.92 1.0228 62.3180 248.957 109.62 1.64E +050.6034

2 66.5 19.2 28.2 1.94 1.0222 62.3177 181.498 93.71 1.40E +050.6041

3 66.6 19.2 28.5 1.96 1.0214 62.3173 106.147 71.85 1.07E +050.6057

4 66.7 19.3 28.5 1.96 1.0205 62.3168 62.069 55.05 8.24E +040.6069

5 66.7 19.3 28.5 1.96 1.0201 62.3166 61.437 54.72 8.19E +040.6064

Temperature Pressure Viscos-

Dens-ity Differen

ity

°F °C psig barg cP lb/ft

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

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Table 3-4: Test 2, sensor serial number 13443 (continued)

Data point number

6 66.7 19.3 28.4 1.96 1.0195 62.3163 52.008 50.32 7.54E +040.6061

7 66.7 19.3 28.4 1.96 1.0184 62.3157 30.888 38.87 5.83E +040.6074

8 66.9 19.4 28.3 1.95 1.0165 62.3147 15.937 28.01 4.21E +040.6094

9 67.0 19.4 28.3 1.95 1.0160 62.3145 5.821 17.01 2.56E +040.6123

10 67.1 19.5 28.2 1.95 1.0140 62.3134 3.759 13.71 2.06E +040.6142

11 67.1 19.5 28.2 1.95 1.0139 62.3134 3.815 13.81 2.08E +040.6141

Temperature Pressure Viscos-

ity

°F °C psig barg cP lb/ft

Dens-ity Differen

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

Sensor serial number 26171

Test laboratory

Model

Rosemount Boulder, Colorado flow lab

Rosemount 405P

Fluid

Sensor serial number

Beta ratio

Pipe size

Pipe inner dimension

Test date

Water

26171

0.65

4 in (102 mm) schedule 40

4.026 in (102.26 mm)

February 12, 2001

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Figure 3-3: Sensor 26171 test results

Table 3-5: Test 1, sensor serial number 26171

Data point number

Temperature Pressure Viscos-

Density Differen

ity

°F °C psig barg cP lb/ft

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

1 67.1 19.5 39.1 2.70 1.0145 62.3137 239.216 401.62 3.11E +050.6024

2 67.1 19.5 39.1 2.70 1.0138 62.3133 239.236 401.59 3.11E +050.6023

3 67.1 19.5 36.3 2.51 1.0148 62.3138 165.292 333.92 2.58E +050.6025

4 67.5 19.7 39.8 2.75 1.0092 62.3108 96.979 255.97 1.99E +050.6030

5 67.6 19.8 40.2 2.77 1.0068 62.3095 56.898 196.54 1.53E +050.6044

6 67.7 19.8 40.2 2.77 1.0061 62.3091 56.884 196.50 1.53E +050.6044

7 67.4 19.7 36.2 2.50 1.0097 62.3111 46.432 177.61 1.38E +050.6046

8 67.5 19.7 36.8 2.54 1.0081 62.3102 27.880 137.90 1.07E +050.6058

9 67.7 19.8 37.3 2.57 1.0062 62.3092 14.235 98.76 7.70E +040.6072

10 67.8 19.9 37.6 2.59 1.0042 62.3081 5.057 59.23 4.63E +040.6109

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Table 3-5: Test 1, sensor serial number 26171 (continued)

Data point number

11 68.0 20.0 37.8 2.60 1.0022 62.3069 3.538 49.53 3.88E +040.6108

12 68.0 20.0 37.8 2.60 1.0015 62.3066 3.557 49.71 3.89E +040.6114

Temperature Pressure Viscos-

ity

°F °C psig barg cP lb/ft

Density Differen

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

Table 3-6: Test 2, sensor serial number 26171

Data point number

1 66.8 19.3 39.1 2.69 1.0188 62.3160 238.770 401.39 3.09E +050.6026

2 66.8 19.3 39.0 2.69 1.0182 62.3156 238.510 401.34 3.09E +050.6028

3 66.8 19.3 36.7 2.53 1.0188 62.3159 164.445 333.38 2.57E +050.6031

4 67.0 19.4 38.1 2.62 1.0162 62.3146 96.245 255.27 1.97E +050.6036

Temperature Pressure Viscos-

ity

°F °C psig barg cP lb/ft

Density Differen

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

5 67.2 19.5 39.0 2.69 1.0135 62.3131 56.888 196.62 1.52E +050.6047

6 67.2 19.6 39.0 2.69 1.0129 62.3128 56.943 196.52 1.52E +050.6041

7 67.1 19.5 36.0 2.48 1.0137 62.3132 46.106 177.19 1.37E +050.6053

8 67.3 19.6 36.6 2.52 1.0119 62.3123 27.775 137.87 1.07E +050.6068

9 67.4 19.7 37.2 2.56 1.0100 62.3113 14.234 98.94 7.69E +040.6083

10 67.6 19.8 37.5 2.58 1.0079 62.3101 5.058 59.22 4.61E +040.6109

11 67.6 19.8 37.6 2.60 1.0077 62.3100 3.535 49.56 3.86E +040.6115

12 67.6 19.8 37.6 2.59 1.0079 62.3101 3.530 49.56 3.89E +040.6119

Sensor serial number 08261

Test laboratory

Model

Rosemount Boulder, Colorado flow lab

Rosemount 405C

22 Emerson.com/Rosemount

Reference Manual Test facilities and flow tests

00821-0100-4810 May 2022

Fluid

Sensor serial number

Beta ratio

Pipe size

Pipe inner dimension

Test date

Water

08261

0.40

2 in (51 mm) schedule 40

2.066 in (52.48 mm)

May 29, 2002

Figure 3-4: Sensor 08261 test results

Table 3-7: Test 1, sensor serial number 08261

Data point number

1 85.0 29. 4 28.3 1.95 0.8074 62.1497 246.390 37.87 7.15E +050.6049

2 85.1 29.5 28.3 1.95 0.8062 62.1484 246.087 37.84 7.15E +050.6048

3 85.1 29.5 28.3 1.95 0.8057 62.1479 173.118 31.76 6.01E +050.6052

4 85.2 29.6 28.2 1.94 0.8050 62.1470 105.641 24.83 4.70E +050.6056

5 85.1 29.5 28.3 1.95 0.8059 62.1480 61.992 19.05 3.60E +050.6066

6 85.1 29.5 28.2 1.95 0.8062 62.1484 62.056 19.06 3.60E +050.6065

7 85.1 29. 5 28.2 1.95 0.8061 62.1483 48.369 16.83 3.18E +050.6069

Temperature Pressure Viscos-

ity

°F °C psig barg cP lb/ft

Dens-ity Differen

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

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Test facilities and flow tests Reference Manual

May 2022 00821-0100-4810

Table 3-7: Test 1, sensor serial number 08261 (continued)

Data point number

Temperature Pressure Viscos-

Dens-ity Differen

ity

°F °C psig barg cP lb/ft

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

8 85.1 29.5 28.1 1.94 0.8060 62.1481 27.581 12.73 2.41E +050.6078

9 85.2 29.6 28.2 1.94 0.8054 62.1475 16.431 9.85 1.86E +040.6095

10 85.2 29.6 28.1 1.94 0.8050 62.1471 6.005 5.98 1.13E +040.6122

Table 3-8: Test 2, sensor serial number 08261

Data point number

1 67.5 19.7 28.4 1.96 1.0088 62.3106 240.299 37.41 5.67E +040.6060

2 67.4 19.7 28.4 1.95 1.0099 62.3112 240.572 37.43 5.66E +040.6060

3 67.5 19.7 28.3 1.95 1.0094 62.3109 177.971 32.21 4.88E +040.6064

Temperature Pressure Viscos-

Density Differen

ity

°F °C psig barg cP lb/ft

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

4 67.6 19.8 28.2 1.95 1.0079 62.3101 107.432 25.05 3.80E +040.6068

5 67.6 19.8 28.3 1.95 1.0075 62.3099 60.460 18.84 2.86E +040.6084

6 67.6 19.8 28.3 1.95 1.0073 62.3097 60.423 18.83 2.86E +040.6084

7 67.6 19.8 28.3 1.95 1.0070 62.3096 50.926 17.29 2.62E +040.6085

8 67.7 19.8 28.2 1.94 1.0057 62.3089 28.372 12.93 1.97E +040.6098

9 67.9 19.9 28.2 1.95 1.0038 62.3078 17.078 10.06 1.53E +040.6111

10 68.0 20.0 28.1 1.94 1.0014 62.3066 6.160 6.07 9.26E +030.6140

24 Emerson.com/Rosemount

Reference Manual Test facilities and flow tests

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Table 3-9: Test 3, sensor serial number 08261

Data point number

1 66.6 19.2 28.4 1.96 1.0218 62.3175 242.040 37.55 5.62E +040.6060

2 66.6 19.2 28.4 1.96 1.0216 62.3174 241.797 37.52 5.61E +040.6060

3 66.6 19.2 28.3 1.95 1.0207 62.3170 174.615 31.92 4.78E +040.6067

4 66.8 19.3 28.3 1.95 1.0190 62.3160 107.910 25.11 3.77E +040.6070

5 66.9 19.4 28.3 1.95 1.0173 62.3151 61.892 19.06 2.86E +040.6084

6 66.9 19.4 28.3 1.95 1.0168 62.3149 62.009 19.08 2.87E +040.6086

7 67.0 19.4 28.2 1.95 1.0161 62.3145 48.438 16.87 2.54E +040.6087

8 67.2 19.5 28.2 1.94 1.0131 62.3129 27.870 12.83 1.94E +040.6102

9 67.4 19.7 28.2 1.94 1.0105 62.3115 16.348 9.84 1.49E +040.6112

Temperature Pressure Viscos-

ity

°F °C psig barg cP lb/ft

Density Differen

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

10 67.6 19.8 28.1 1.94 1.0071 62.3095 5.917 5.95 9.02E +030.6139

Sensor serial number 12402

Test laboratory

Model

Fluid

Sensor serial number

Beta ratio

Pipe size

Pipe inner dimension

Test date

Rosemount Boulder, Colorado flow lab

Rosemount 405C

Water

12402

0.60

2 in (51 mm) schedule 40

2.066 in (52.48 mm)

May 29, 2002

Rosemount 405 and 1595 25

Test facilities and flow tests Reference Manual

May 2022 00821-0100-4810

Figure 3-5: Sensor 12402 test results

Table 3-10: Test 1, sensor serial number 12402

Data point number

1 66.6 19.2 28.2 1.95 1.0215 62.3174 265.761 93.08 1.39E +050.6112

2 66.6 19.2 28.2 1.94 1.0218 62.3175 269.224 93.66 1.40E +050.6110

3 66.6 19.2 28.4 1.96 1.0217 62.3175 200.526 80.84 1.21E +050.6111

4 66.6 19.2 28.5 1.96 1.0210 62.3171 125.494 64.00 9.57E +040.6115

5 66.6 19.2 28.4 1.96 1.0210 62.3171 125.292 63.97 9.57E +040.6117

6 66.6 19.2 28.4 1.96 1.0208 62.3170 86.271 53.10 7.95E +040.6120

7 66.7 19.3 28.4 1.96 1.0197 62.3164 56.759 43.08 6.45E +040.6121

8 66.8 19.4 28.4 1.96 1.0178 62.3154 34.709 33.77 5.07E +040.6136

Temperature Pressure Viscos-

Density Differen

ity

°F °C psig barg cP lb/ft

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficie nt

9 67.0 19.4 28.3 1.95 1.0159 62.3145 17.529 24.01 3.61E +040.6137

26 Emerson.com/Rosemount

Reference Manual Test facilities and flow tests

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Table 3-11: Test 2, sensor serial number 12402

Data point number

1 67.0 19.4 28.2 1.94 1.0160 62.3145 263.666 92.83 1.40E +050.6119

2 67.0 19.4 28.2 1.94 1.0162 62.3146 264.049 92.87 1.40E +050.6118

3 67.0 19.4 28.3 1.95 1.0159 62.3144 200.742 81.05 1.22E +050.6123

4 67.1 19.5 28.4 1.96 1.0148 62.3139 124.906 63.99 9.63E +040.6129

5 67.1 19.5 28.4 1.96 1.0149 62.3139 124.940 63.98 9.63E +040.6127

6 67.1 19.5 28.4 1.96 1.0146 62.3137 84.779 52.74 7.94E +040.6132

7 67.1 19.5 28.3 1.95 1.0137 62.3132 57.319 43.38 6.54E +040.6133

8 67.3 19.6 28.3 1.95 1.0115 62.3120 35.026 33.96 5.13E +040.6142

9 67.4 19.7 28.2 1.95 1.0095 62.3109 17.140 23.78 3.60E +040.6149

Temperature Pressure Viscos-

ity

°F °C psig bar cP lb/ft

Density Differen

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

Sensor serial number 16261

Test laboratory

Model

Fluid

Sensor serial number

Beta ratio

Pipe size

Pipe inner dimension

Test date

Rosemount Boulder, Colorado flow lab

Rosemount 405C

Water

16261

0.40

4 in (102 mm) schedule 40

2.066 in (52.48 mm)

October 31, 2002

Rosemount 405 and 1595 27

Test facilities and flow tests Reference Manual

May 2022 00821-0100-4810

Figure 3-6: Sensor 16261 test results

Table 3-12: Test 1, sensor serial number 16261

Data point number

1 68.0 20.0 36.4 2.51 1.0025 62.3071 243.769 144.92 1.13E +050.6107

2 68.0 20.0 36.4 2.51 1.0025 62.3072 243.604 144.93 1.13E +050.6109

3 67.9 20.0 35.8 2.47 1.0028 62.3073 195.795 130.02 1.02E +050.6114

4 67.9 20.0 35.9 2.48 1.0028 62.3073 155.412 115.82 9.06E +040.6113

5 67.9 20.0 36.0 2.48 1.0028 62.3073 118.376 101.13 7.91E +040.6115

6 67.9 20.0 36.0 2.48 1.0028 62.3073 118.489 101.18 7.91E +040.6116

7 67.9 20.0 36.1 2.49 1.0028 62.3073 88.385 87.29 6.83E +040.6109

8 67.9 20.0 36.2 2.50 1.0028 62.3073 61.124 72.65 5.68E +040.6114

Temperature Pressure Viscos-

ity

°F °C psig barg cP lb/ft

Density Differen

-tial pressure

in water GPM

Flow rate

Pipe Reynolds number

Discharge coefficient

9 67.9 20.0 36.3 2.50 1.0027 62.3073 38.574 57.84 4.52E +040.6128

10 67.9 20.0 36.4 2.51 1.0028 62.3073 22.125 43.81 3.43E +040.6128

28 Emerson.com/Rosemount

+ 64 hidden pages

Rosemount Manual: Rosemount 405 Compact Orifice Series and Rosemount 1595 Conditioning Orifice Plate Manuals & Guides

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

1 Introduction

1.1 Product features

1.2 Testing

1.2.1 Structural testing

In-house performance testing

Independent testing

1.3 Product specifications

1.3.1 Straight pipe requirement

2 Theory of operation

2.1 Overview

2.2 Technical detail

2.3 Compact orifice plate technology

2.4 Conditioning orifice plate technology

3 Test facilities and flow tests

3.1 Overview

3.2 Testing laboratories

3.3 Gravimetric testing

3.4 Flow tests

3.4.1 Run to run repeatability

Meter installed 2D downstream of the following fittings

3.5 Run to run repeatability