Rosemount The 285 Annubar Primary Element Series Manuals & Guides

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Reference Manual

Product Discontinued December 2009

00809-0100-4028, Rev AA October 2005

The 285 Annubar® Primary Element Series

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Reference Manual

00809-0100-4028, Rev AA October 2005

Rosemount 285

285 Annubar Primary Element Series

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.

The United States has two toll-free assistance numbers and one International number.

Customer Central

1-800-999-9307 (7:00 a.m. to 7:00 P.M. CST)

International

1-(952) 906-8888

National Response Center

1-800-654-7768 (24 hours a day) Equipment service needs

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 Rosemount Sales Representative.

This device is intended for use in temperature monitoring applications and should not be used in control and safety applications.

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Reference Manual

00809-0100-4028, Rev AA October 2005

Rosemount 285

SECTION 1 Introduction

SECTION 2 Installation

Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Section 2: Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Section 3: Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Section 4: Operation and Maintenance . . . . . . . . . . . . . . . . . . . 1-1

Appendix A: Specifications and Reference Data. . . . . . . . . . . . 1-1

Appendix B: Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Receiving and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Returning the Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Structural . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Functional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Access Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Process Flange Orientation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Optional Electronics Housing . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Cover Installations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Process Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Installation Flowchart and Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Tools and Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Mounting Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Bolt Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Instrument Manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Straight Run Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Direct Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Horizontal Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Vertical Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Remote Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Valves and Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Impulse Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Pak-Lok Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Step 1: Determine the Proper Orientation . . . . . . . . . . . . . . . . 2-12

Step 2: Drill a Hole into the Pipe . . . . . . . . . . . . . . . . . . . . . . . 2-12

Step 3: Weld the Mounting Hardware . . . . . . . . . . . . . . . . . . . 2-13

Step 4: Insert into the Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Step 5: Mount the Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Remote Mount Head – temperatures below 250 °F (121 °C) . 2-15

Remote Mount Head – temperature above 250 °F (121 °C) . . 2-16

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Rosemount 285

Reference Manual

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October 2005

Duct Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Step 1: Determine the Proper Orientation . . . . . . . . . . . . . . . . 2-17

Step 2: Drill a Hole into the Duct . . . . . . . . . . . . . . . . . . . . . . . 2-17

Step 3: Assemble and check Fit-Up . . . . . . . . . . . . . . . . . . . . 2-18

Step 4: Insert into Duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

Step 5: Mount the Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . 2-21

Remote Mount Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

SECTION 3 Commissioning

Commisioning the 951 transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Step 1: Mount the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Gas Flow Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Step 2: Connect Wiring and Power Up. . . . . . . . . . . . . . . . . . . . . . 3-2

Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Step 3: Configure the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Step 4: Trim the Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Zero Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Using the 275/375 HART Communicator . . . . . . . . . . . . . . . . . . . . 3-4

Local Re-ranging and Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Zero - 4 mA point. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Without an LCD meter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

With an LCD meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Span - 20 mA point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Without an LCD meter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

With an LCD meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Commissioning on the Bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Commissioning the 285 with the 2024 transmitter. . . . . . . . . . . . . . . . 3-6

Direct Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Liquid Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Liquid Service 3-Valve Manifold . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Gas Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Gas Service 3-Valve Manifold . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Wet Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Steam Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3-Valve Steam No Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Remote Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Zero the Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Check for System Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

“Calibrate Out” Temperature Effects . . . . . . . . . . . . . . . . . . . . 3-11

Gas Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Steam Service or Liquid Service above 250 °F (121 °C) . . . . 3-14

SECTION 4 Operation and Maintenance

APPENDIX A Reference Data

TOC-2

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Remove the Flowmeter from Service . . . . . . . . . . . . . . . . . . . . . . . 4-3

Rosemount 285 Annubar Primary Specifications . . . . . . . . . . . . . . . .A-1

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

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Rosemount 285

Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3

Optional Rosemount 2024 Transmitter Specifications. . . . . . . . . . . . . A-7

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-7

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-7

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-9

Optional Rosemount 951 Transmitter Specifications. . . . . . . . . . . . . . A-9

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-9

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-10

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11

Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-15

Rosemount 285 Annubar Primary Ordering Information . . . . A-15

Pipe I.D. Range Code–measured in inches (millimeters). . . . . . .A-17

APPENDIX B Approvals

Hazardous Locations Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Rosemount 2024 Product Certifications . . . . . . . . . . . . . . . . . . . . . . . B-1

Approved Manufacturing Locations . . . . . . . . . . . . . . . . . . . . . . . . B-1

European Directive Information . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Hazardous Locations Certifications . . . . . . . . . . . . . . . . . . . . . . . . B-2

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October 2005

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Rosemount 285

Section 1 Introduction

Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1

Receiving and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2

Returning the Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2

Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2

USING THIS MANUAL This product manual provides installation, configuration, calibration,

troubleshooting, and maintenance instructions for the Annubar Flowmeter Series.

Section 2: Installation

• Installation flowchart and checklist

• Orienting, mounting, and installing the flowmeter

• Commissioning the flowmeter according to the application

Section 3: Commissioning

• Commissioning on the Bench

• Commissioning the 285 with the 2024 transmitter

Section 4: Operation and Maintenance

• Troubleshooting information

• Disassembly

Appendix A: Specifications and Reference Data

• Specifications

• Dimensional drawings

Appendix B: Approvals

• Approvals certifications

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Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

RECEIVING AND INSPECTION

RETURNING THE PRODUCT

Annubar Primary Elements are available in different models and with different options, so it is important to inspect and verify that the appropriate model was delivered before installation.

Upon receipt of the shipment, check the packing list against the material received and the purchase order. All items are tagged with a model number, serial number, and customer tag number. Report any damage to the carrier.

To expedite the return process, call the Rosemount National Response Center toll-free at 800-654-7768. This center, available 24 hours a day, will assist you with any needed information or materials.

The center will ask for the following information:

• Product model

• Serial numbers

• The last process material to which the product was exposed

The center will provide

• A Return Material Authorization (RMA) number

• Instructions and procedures that are necessary to return goods that were exposed to hazardous substances

NOTE

If a hazardous substance is identified, a Material Safety Data Sheet (MSDS), required by law to be available to people exposed to specific hazardous substances, must be included with the returned materials.

CONSIDERATIONS Information in this manual applies to circular pipes and square or rectangular

ducts only. Consult Rosemount Customer Central for instructions regarding use in other duct configurations.

Limitations Structural

Structural limitations are printed on the sensor tag. Exceeding structural limitations may cause sensor failure.

Functional

The most accurate and repeatable flow measurement occurs in the following conditions:

• The structural limit differential pressure, as printed on the sensor tag, is not exceeded.

• The instrument is not used for two-phase flow or for steam service below saturation temperature.

Install the flowmeter in the correct location within the piping branch to prevent measurement inaccuracies caused by flow disturbances.

The flowmeter can be installation with a maximum misalignment of 3 degrees (see Figure 1-1). Misalignment beyond 3 degrees will cause flow measurement errors.

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Figure 1-1. Permissible Misalignment

Rosemount 285

3°

Environmental Mount the Annubar Primary Element in a location with minimal ambient

temperature changes. Appendix A: Reference Data lists the temperature operating limits. Mount to avoid vibration, mechanical shock, and external contact with corrosive materials.

Access Requirements

Consider the need to access the flowmeter when choosing an installation location and orientation.

Process Flange Orientation

Orient the process flanges on a remote mounted Annubar Primary Element so that process connections can be made. For safety reasons, orient the drain/vent valves so that process fluid is directed away from technicians when the valves are used. In addition, consider the possible need for a testing or calibration input.

Optional Electronics Housing

Terminal Side

The circuit compartment should not routinely need to be opened when the unit is in service. Wiring connections are made through the conduit openings on the top side of the housing. The field terminal side is marked on the electronics housing. Mount the flowmeter so that the terminal side is accessible. A 0.75-in. (19 mm) clearance is required for cover removal. Use a conduit plug on the unused side of the conduit opening. A 3-in. (76 mm) clearance is required for cover removal if a meter is installed.

15-490022-901A, 15-490022-902, 15-490022-903.EPS

Cover Installations

Always install the electronics housing covers metal-to-metal to ensure a proper seal.

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October 2005

Figure 1-2. Electronics Housing

ROSEMOUNT 951

ROSEMOUNT 2024

Process Considerations The process connections on the 2024 transmitter flange are 1/4–18 NPT.

These are Class 2 threads; use the plant-approved lubricant or sealant when making the process connections. The process connections on the transmitter flange are on 2 five-valve manifold. The process connections on the 951 transmitter are NPT. These are class 3 threads; use the plant-approved lubricant or sealant when making the process connections. The process connections on the transmitter are 1

/8–in. (54 mm) centers to allow direct mounting to a three- or

/2-in. (39 mm) apart.

/8-27

Electrical For the Rosemount 951 electrical installation see 00825-0100-4362.

For the Rosemount 2024 electrical installation see 00809-0100-4592.

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Rosemount 285

Section 2 Installation

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1

Installation Flowchart and Checklist . . . . . . . . . . . . . . . . page 2-2

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-4

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-12

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.

Explosions could result in death or serious injury:

• Do not remove the transmitter cover in explosive atmospheres when the circuit is live.

• Before connecting a Rosemount HART Communicator in an explosive atmosphere, make sure the instruments in the loop are installed in accordance with intrinsically safe or non-incendive field wiring practices.

• Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications.

• Both transmitter covers must be fully engaged to meet explosion-proof requirements.

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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Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

INSTALLATION FLOWCHART AND CHECKLIST

Figure 2-1. Installation Chart

Figure 2-1 is an installation flowchart that provides guidance through the installation process. Following the figure, an installation checklist has been provided to verify that all critical steps have been taken in the installation process. The checklist numbers are indicated in the flowchart.

Start.

Unpack Instrument

Review Product

Manual.

Verify proper location.

Hazardous

Location?

Bench

Configure?

Refer to transmitter

manuals for approvals

Refer to transmitter manual

for configuration

Verify

Remote

Mounted

Electronics?

Install flowmeter

Wire

Remote

Mounted

Electronics?

Commission

Finish.

Install hardware

Install electronics

Commission

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Rosemount 285

The following list is a summary of the steps required to complete a flowmeter installation. If this a new installation, begin with step 1. If the mounting is already in place, verify that the hole size and the fittings match the recommended specifications (see Table 2-3 on page 2-13) and begin with step 5.

1. Determine where the flowmeter is to be placed within the piping system.

2. Establish the proper orientation as determined by the intended application.

3. Review the transmitter manual and determine if the flowmeter is located in a hazardous location.

4. Confirm the configuration.

5. Drill the correct sized hole into the pipe.

For instruments equipped with opposite-side support, drill a second hole 180° from the first hole.

6. Weld the mounting and clean the burrs and welds.

7. Measure the pipe’s internal diameter (ID), preferably at 1 x ID from the hole (upstream or downstream).

NOTE

To maintain published flowmeter accuracy, provide the pipe ID when purchasing the flowmeter.

8. Check the fit-up of the instrument assembly to the pipe.

9. Install the flowmeter.

10. Wire the instrument.

11. Supply power to the flowmeter.

12. Perform a trim for mounting effects.

13. Check for leaks.

14. Commission the instrument

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Rosemount 285

MOUNTING

Tools and Supplies Tools required include the following:

• Open end or combination wrenches (spanners) to fit the pipe fittings

and bolts: 9/16-in., 5/8-in., 7/8-in.

• Adjustable wrench: 15-in. (1½-in. jaw).

• Nut driver: 3/8-in. for vent/drain valves (or 3/8-in. wrench).

• Phillip’s screwdriver: #1.

• Standard screwdrivers: ¼-in., and 1/8-in. wide.

• Pipe wrench: 14-in.

• Wire cutters/strippers

Supplies required include the following:

/4-in. tubing (recommended) or 1/4-in. pipe to hook up the electronics to

•

the sensor probe. The length required depends upon the distance between the electronics and the sensor.

• Fittings including (but not limited to)

• Two tube or pipe tees (for steam or high temperature liquid) and

• Six tube/pipe fittings (for tube)

• Pipe compound or Teflon (PTFE) tape (where local piping codes allow).

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Mounting Brackets Mounting bracket for the 951 transmitter will facilitate mounting to a panel or

wall.

Bolt Installation Guidelines

The following guidelines have been established to ensure a tight flange, adapter, or manifold seal. Only use bolts supplied with the instrument or sold by the factory.

The 2024 transmitter is shipped with the coplanar flange installed with four

1.75-in. (44.5 mm) flange bolts. The following bolts also are supplied to facilitate other mounting configurations:

• Four 2.25-in. (57.2 mm) manifold/flange bolts for mounting the coplanar

flange on a three-valve manifold. In this configuration, the 1.75-in. (44.5 mm) bolts may be used to mount the flange adapters to the process connection side of the manifold.

• (Optional) If flange adapters are ordered, four 2.88-in. (73.2 mm)

flange/adapter bolts for mounting the flange adapters to the coplanar flange.

Stainless steel bolts supplied by Emerson Process Management are coated with a lubricant to ease installation. Carbon steel bolts do not require lubrication. Do not apply additional lubricant when installing either type of bolt. Rosemount bolts are identified by the following head markings:

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Rosemount 285

Figure 2-2. Bolts

Carbon Steel Head

Markings (CS)

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October 2005

B7M

Stainless Steel Head

Markings (SST)

316

B8M

STM

316

SW 316

Figure 2-3. Coplanar Mounting Bolts and Bolting Configurations for Coplanar Flange.

Instrument Manifolds Figure 2-4 identifies the valves on a 3-valve manifold. Table 2-1 explains the

purpose of these valves.

An instrument manifold is recommended for all installations. A manifold allows an operator to equalize the pressures prior to the zero calibration of the electronics as well as to isolate the electronics from the rest of the system without disconnecting the impulse piping.

Figure 2-4. Valve Identification for a 3-Valve Manifold

NOTE

Some recently-designed instrument manifolds have a single valve actuator, but cannot perform all of the functions available on standard 5-valve units. Check with the manufacturer to verify the functions that a particular manifold can perform. In place of a manifold, individual valves may be arranged to provide the necessary isolation and equalization functions.

To P H To P L

DVLDVH

8900_8900_35A

2-5

Rosemount 285

Table 2-1. Description of Impulse Valves and Components

Reference Manual

00809-0100-4028, Rev AA

October 2005

Name Description Purpose

Manifold and Impulse Pipe Valves

PH Primary Sensor – High Pressure Isolates the flowmeter sensor from the PL Primary Sensor – Low Pressure DVH Drain/Vent Valve – High Pressure Drains (for gas service) or vents (for DVL Drain/Vent Valve – Low Pressure

MH Manifold – High Pressure Isolates high side or low side pressure ML Manifold – Low Pressure

Components

1 Electronics Reads Differential Pressure Isolates 2 Manifold 3 Vent Chambers Collects gases in liquid applications. 4 Condensate Chamber Collects condensate in gas

impulse piping system

liquid or steam service) the DP electronics chambers

from the process.

and equalizes electronics.

applications.

Straight Run Requirements

Use the following to aid in determining the straight run requirements

NOTE

• If longer lengths of straight run are available, position the mounting

such that 80% of the run is upstream and 20% is downstream.

• Straightening vanes may be used to reduce the required straight run

length.

• Row 5 in Table 2-2 is to be used if a “through type” valve will remain

open. Row 6 in Table 2-2 applies to gate, globe, plug, and other throttling valves that are partially opened, as well as control valves.

2-6

Rosemount 285

Table 2-2. Straight Run Requirements

Reference Manual

00809-0100-4028, Rev AA

October 2005

Upstream Dimensions

Without Vanes With Vanes

Out of

Plane

A’ C C’

—

Dimensions

Downstream

—

2-7

Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

Figure 2-5. Mounting Configuration

Table 1. Minimum straight duct requirements for the 285 Annubar

DAMPER

15W

Upstream Length Downstream Length

285/15-490028-901

285/15-490029-901

285/15-490030-90

285/15-490031-90

285/15-490032-901

7W 2W

15W 2W

7W 2W

15W 2W

Direct Mount Horizontal Pipes

Liquid or Steam Applications

Due to the possibility of air getting trapped in the probe, the sensor should be located according to Figure 2-6 for liquid or steam applications. The area between 0° and 30° angle should not be used unless full bleeding of air from the probe is possible.

For liquid applications, mount the side drain/vent valve upward to allow the gases to vent.

In steam applications, fill the lines with water to prevent the steam from contacting the electronics. Condensate chambers are not required because the volumetric displacement of the electronics is negligible.

Air and Gas Applications

Figure 2-6 illustrates the recommended location of the flowmeter in air or gas applications. The sensor should be located on the upper half of the pipe, at least 30° above the horizontal line.

For air and gas applications, mount the drain/vent valve downward to allow liquid to drain.

2-8

Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

Figure 2-6. Horizontal Pipe Applications

Liquid and Steam Gas

120

30°

120°

30°

Vertical Pipes

Liquid, Steam, Air, and Gas Applications

Figure 2-7 illustrates the recommended location of the flowmeter in liquid, air, or gas applications.

The sensor can be installed in any position around the circumference of the pipe, provided the vents are positioned properly for bleeding or venting. Vertical pipe installations require more frequent bleeding or venting, depending on the location.

15-490000-901, 15-490001-901

Figure 2-7. Vertical Pipe Applications

Liquid and Steam Gas

Remote Mount Valves and Fittings

Throughout the remote mounting process:

• Use only valves, fittings, and pipe thread sealant compounds that are

rated for the service pipeline design pressure and temperature as specified in Appendix A: Reference Data.

• Verify that all connections are tight and that all instrument valves are

fully closed.

• Verify that the sensor probe is properly oriented for the intended type of

service: liquid, gas or steam (see “Direct Mount” on page 2-8 and “Remote Mount” on page 2-9).

360

FLOW

360

15-490002-901,

15-490003-901

2-9

Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

Impulse Piping

Impulse piping connects remote mounted electronics to the sensor. Temperatures in excess of 250 °F (121 °C) at the electronics will damage electronics components; impulse piping allows service flow temperatures to decrease to a point where the electronics is no longer vulnerable.

The following restrictions and recommendations apply to impulse piping location.

• Piping used to connect the sensor probe and electronics must be rated

for continuous operation at the pipeline-designed pressure and temperature

• Impulse piping that runs horizontally must slope at least 1–in. per foot

(83mm/m).

It must slope downwards (toward the electronics) for liquid and steam applications.

It must slope up (away from the electronics) for gas applications.

• For applications where the pipeline temperature is below 250 °F (121

°C), the impulse piping should be as short as possible to minimize flow temperature changes. Insulation may be required.

• For applications where pipeline temperature is above 250 °F (121 °C),

the impulse piping should have a minimum length of 1-ft. (0.30 m) for every 100 °F (38 °C) over 250 °F (121 °C), which is the maximum operating electronics temperature. Impulse piping must be uninsulated to reduce fluid temperature. All threaded connections should be checked after the system comes up to temperature, because connections may be loosened by the expansion and contraction caused by temperature changes.

• A minimum of

tubing with a wall thickness of at least 0.035-in. (0.9 mm) is recommended.

• Outdoor installations for liquid, saturated gas, or steam service may

require insulation and heat tracing to prevent freezing.

• For installations where the electronics are more than 6-ft. (1.8m) from

the sensor probe, the high and low impulse piping must be run together to maintain equal temperature. They must be supported to prevent sagging and vibration.

• Threaded pipe fittings are not recommended because they create voids

where air can become entrapped and have more possibilities for leakage.

• Run impulse piping in protected areas or against walls or ceilings. If the

impulse piping is run across the floor, ensure that it is protected with coverings or kick plates. Do not locate the impulse piping near high temperature piping or equipment.

• Use an appropriate pipe sealing compound rated for the service

temperature on all threaded connections. When making threaded connections between stainless steel fittings, Loctite® PST® Sealant is recommended.

/4-in. (6.35 mm) outer diameter (OD) stainless steel

2-10

Rosemount 285

Horizontal Pipes Liquid or Steam Applications

Due to the possibility of air getting trapped in the probe, the sensor should be located according to Figures 2-8 and 2-10 for liquid or steam applications. The area between 0° and 30° angle should not be used unless full bleeding of air from the probe is possible.

Air and Gas Applications

Figure 2-9 illustrates the recommended location of the flowmeter in air or gas applications. The sensor should be located on the upper half of the pipe, at least 30° above the horizontal line.

Figure 2-8. Liquid Service

Reference Manual

00809-0100-4028, Rev AA

October 2005

Figure 2-9. Gas Service

30°

120°

120

2-11

Rosemount 285

Figure 2-10. Steam Service

Reference Manual

00809-0100-4028, Rev AA

October 2005

30°

120°

30°

INSTALLATION This manual contains the horizontal and vertical installation procedures for the

Pak-Lok and Duct Mount Annubar models.

Pak-Lok Model Figure 2-11 identifies the components of the Pak-Lok assembly.

Figure 2-11. Components

Direct Mount Electronics

Connection with Valves

One Piece

Nuts & Washers

Compression

Plate

String Packing

Follower

Studs

285 Annubar

Pak-Lok Body

Threaded Coupling

Step 1: Determine the Proper Orientation

Please refer to “Mounting” on page 2-4 for straight run requirements and orientation information.

Step 2: Drill a Hole into the Pipe

Follow the steps below to drill the hole in the pipe.

1. Depressurize and drain the pipe.

2. From the previous steps, select the location to drill the hole.

3. Determine the diameter of the hole to be drilled according to the specifications in Table 2-3 and drill the hole. Do not torch cut the

hole.

15-490023-901a.eps

2-12

Rosemount 285

Figure 2-12. Drill Hole into Pipe

Table 2-3. Sensor Size / Hole

Reference Manual

00809-0100-4028, Rev AA

October 2005

Note: Drill the appropriate diameter hole through the pipe wall.

Drill the hole 180 degrees from the first hole for opposite-side support models.

Sensor Width Sensor Size Hole Diameter

0.590-in. (14.99 mm) 1

1.060-in. (26.92 mm) 2 15/16-in. (34 mm) + 1/16-in. (1 mm)

4. If opposite-side support coupling is supplied, a second identically sized hole must be drilled opposite the first hole so that the sensor can pass completely through the pipe. (To determine a opposite-side support model, measure the distance from the tip of the first slot or hole. If the distance is greater than 1-in. (25.4 mm), it is the opposite-side model.) To drill the second hole, follow these steps:

a. Measure the pipe circumference with a pipe tape, soft wire, or

string (for the most accurate measurement the pipe tape needs to be perpendicular to the axis of flow).

b. Divide the measured circumference by two to determine the

location of the second hole.

c. Rewrap the pipe tape, soft wire, or string from the center of the first

hole. Then, using the number calculated in the preceding step, mark the center of what will become the second hole.

d. Using the diameter determined from Table 2-3, drill the hole into

the pipe with a hole saw or drill. Do not torch cut the hole.

e. Deburr the drilled hole(s) on the inside of the pipe.

/4-in. (19 mm) + 1/32-in (1 mm)

– 0.00

8900-8900_15A.EPS

2-13

Step 3: Weld the Mounting Hardware

1. Center the weld fitting over the mounting hole, gap 1/16-in. (1.5 mm) and place four 1/4-in. (6-mm) tack welds at 90° increments. Check alignment of the weld fitting both parallel and perpendicular to the axis of flow. If alignment of mounting is within tolerances (see Figure 1-1), finish weld per local codes. If alignment is outside of specified tolerance make adjustments prior to finish weld.

Rosemount 285

Figure 2-13. Alignment

Reference Manual

00809-0100-4028, Rev AA

October 2005

LMH

Tack

Welds

(1) LMH values are as follows:

Sensor Size 1: 2.89-in. (73 mm) Sensor Size 2: 3.92-in. (100 mm)

NOTE

To avoid serious burns, allow the mounting hardware to cool before continuing.

Step 4: Insert into the Pipe

After the mounting hardware has cooled, use the following steps for installation.

15-490024A-901.EPS

1. Apply appropriate thread sealant to Thread Pak-Lok body, insert into weld fitting and tighten.

2. Thread studs into the Pak-Lok body.

3. To ensure that the flowmeter contacts the opposite side wall, mark the tip of the sensor with a marker.

4. Rotating the flowmeter back and forth, insert the flowmeter into the Pak-Lok body until the sensor tip contacts the pipe wall (or support plug).

5. Remove the flowmeter.

6. Verify that the sensor tip made contact with the pipe wall by removing from the pipe and ensuring that some of the marker has been rubbed off. If the tip did not touch the wall, verify pipe dimensions and the height of mounting body from the OD of the pipe and re-insert.

7. Re-insert the flowmeter into the Pak-Lok body and install the string packing ring on the sensor between the lock ring and the packing follower. Do not damage the string packing.

8. Push the packing ring into the Pak-Lok body and against the weld lock ring.

2-14

Rosemount 285

Figure 2-14. Packing Ring Detail

Reference Manual

00809-0100-4028, Rev AA

October 2005

(3) THREE FULL

TURNS

NNUBAR ASSEMBLY

9. Tighten the nuts onto the studs:

Place the included split-ring lock washer between each of the nuts and the compression plate. Give each nut one half (1/2) turn in succession until the split-ring lock washer is flat between the nut and the compression plate. Inspect the unit for leakage; if any exists, tighten the nuts in one-quarter (1/4) turn increments until there is no leakage.

PACKING FROM ENVELOPE

Figure 2-15. Split-Ring Lock Washer Orientation

NOTE

On sensor size (1), failure to use the split-ring lock washers, improper washer orientation, or over-tightening the nuts may result in damage to the flowmeter.

Stud

Nut

Split ring

lock washer

Compression

Plate

Before Tightening After Tightening

Stud

Nut

Split ring lock washer

Compression Plate

NOTE

Pak-Lok sealing mechanisms generate significant force at the point where the sensor contacts the opposite pipe wall. Caution needs to be exercised on thin-walled piping (ANSI Schedule 10 and below) to avoid damage to the pipe.

28-490000_943A01A

2-15

Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

Step 5: Mount the Transmitter

Direct Mount Head

With Valves

• Place Teflon (PTFE) O-rings into grooves on the face of head.

• Align the high side of the transmitter to the high side of the probe

• (“Hi” is stamped on the side of the head) and install.

• Tighten the nuts in a cross pattern to 400 in•lb (45 N•m).

Without Valves

• Place Teflon (PTFE) O-rings into grooves on the face of head.

• Orient the equalizer valve or valves so they are easily accessible.

Install manifold with the smooth face mating to the face of the head. Tighten in cross pattern to a torque of 400 in•lb (45 N•m).

• Place Teflon (PTFE) O-rings into grooves on the face of the manifold.

• Align the high side of the transmitter to the high side of the probe

• (“Hi” is stamped on the side of the head) and install.

• Tighten the nuts in a cross pattern to 400 in•lb (45 N•m).

Figure 2-16.

Remote Mount Head – temperatures below 250 °F (121 °C)

See “Remote Mount” on page 2-9 for more information.

Liquid Applications Gas Applications

Secure the electronics below the sensor to ensure that air will not be introduced into the impulse piping or the electronics.

Secure the electronics above the sensor to prevent condensable liquids from collecting in the impulse piping and the DP cell.

28_490000_932A, 931A

2-16

Rosemount 285

Figure 2-17. Liquid or Steam Applications

Reference Manual

00809-0100-4028, Rev AA

October 2005

Remote Mount Head – temperature above 250 °F (121 °C)

Horizontal Line Vertical Line

28_490000_933A01A, 934A01A

2-17

Reference Manual

00809-0100-4028, Rev AA

Rosemount 285

October 2005

Duct Model Figure 2-18 identifies the components of the Duct Model assembly.

Figure 2-18. Components

Gasket or Sealant

#12 Sheet Metal Screws

for High Temperature

Nut

Lock Washer

Figure 2-19. Drill Hole into Duct

Duct

Annubar

Stud

Step 1: Determine the Proper Orientation

Please refer to “Mounting” on page 2-4 for straight run requirements and orientation information.

Step 2: Drill a Hole into the Duct

Follow the steps below to drill the hole in the duct.

1. Depressurize and drain the duct.

2. From the previous steps, select the location to drill the hole.

3. Determine the diameter of the hole to be drilled according to the specifications in Table 2-4 and drill the hole with a hole saw or a drill.

Do not torch cut the hole.

Table 2-4. Installation dimensions

2-18

Annubar Model Number B D

285xxxxxxxD1x1x 0.75 in (19.05 mm) 0.38 in (9.65 mm) 285xxxxxxxD1x2x 1.31 in (33.27 mm) 0.38 in (9.65 mm) 285xxxxxxxD2x1x 0.75 in (19.05 mm) not applicable 285xxxxxxxD2x2x 1.31 in (33.27 mm) not applicable

285/15-490014-901,

15-490035-901.EPS

Rosemount 285

Table 2-5. Hole drill size for #12 self-tapping screws (C-dimension) inches (mm)

Reference Manual

00809-0100-4028, Rev AA

October 2005

Hole Required

Duct Wall Thickness Hole Size Drill Size

less than 0.036 in (0.91 mm) 0.166 in (4.2 mm) #19

0.048 in (1.22 mm) 0.169 in (4.3 mm) #18

0.060 in (1.52 mm) 0.177 in (4.5 mm) #16

0.075 in (1.91 mm) 0.182 in (4.6 mm) #14

0.105 in (2.67 mm) 0.185 in (4.7 mm) #13

0.125 in (3.18 mm) 0.196 in (5.0 mm) #9

0.135 in (3.43 mm) 0.196 in (5.0 mm) #9

0.164 in (4.17 mm) 0.201 in (5.1 mm) #7

4. If opposite-side support is supplied, a second hole must be drilled opposite the first hole so that the sensor support can pass through the pipe. To drill the second hole, follow these steps:

a. Mark the mounting location of the Annubar, locating it along the

center line of the rectangular duct or anywhere on the circumference of a round duct. Mark horizontal and vertical center lines through the mounting location.

b. For duct mount Annubars without compression fitting (threaded

stud welded to tip of sensor), extend the center line to the opposite duct wall (or 180° around a circular duct).

c. Rewrap the pipe tape, soft wire, or string from the center of the first

hole. Then, using the number calculated in the preceding step, mark the center of what will become the second hole.

d. Using the diameter determined from Table 2-4, drill the hole into

the pipe with a hole saw or drill. Do not torch cut the hole.

5. Deburr the drilled hole or holes on the inside of the pipe.

Figure 2-20. Fit-up Check for Annubar with Opposite Side Support

Step 3: Assemble and check Fit-Up

1. Measure the Annubar Primary Element from the duct plate to the end of the probe shape.

2. Measure the duct from the far inside wall to the close outside wall and

/16-in. (1.5 mm).

add

3. Compare the numbers in steps 1 and 2.

Small discrepancies can be compensated for with the fit-up of the mounting hardware. Large discrepancies may cause installation problems or error.

2-19

Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

Step 4: Insert into Duct

Duct-Mount without Compression Fitting (Annubar type D1)

1. Place the gasket over the end of the probe and push it up against the mounting flange. Alternatively, a high-temperature gasket sealant may be used.

2. Insert the end of the Annubar through the mounting hole, and push it through the duct until the threaded stud protrudes through the hole on the opposite side of the duct.

Figure 2-21.

Figure 2-22.

GASKET OR SEALANT

5/16-18 STUD

ANNUBAR

FOR HIGH TEMPERATURE

5/16-18 STUD

NNUBAR

GASKET OR SEALANT FOR HIGH TEMPERATURE

3. Push the flange and gasket flush against the duct wall; align the flow arrow in the direction of flow and fasten the flange to the duct using the #12 sheet metal screws provided.

285/15-490015-901, 15-490036-901

STUD

#12 SHEET METAL SCREWS

285/15-490016-901,15-490017-901

2-20

Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

STUD

#12 SHEET

METAL SCREWS

4. On the opposite side of the duct, place the 5/16-in. lock washer over the stud, screw on the pressure in the duct, it may be necessary to add some high temperature gasket sealant where the stud protrudes through the duct wall.

/16 nut, and tighten. Depending on the

285/15-490037-901,15-490038-901

Figure 2-23.

Figure 2-24.

NUT

DUCT

STUD

LOCK WASHER

ANNUBAR

DUCT

STUD

NUT

LOCK WASHER

ANNUBA

Duct Mount With Compression Fitting (Annubar type D2)

1. Place gasket against the mounting flange. Alternatively, a high-temperature gasket sealant may be used.

2. Push the flange and gasket flush against the duct wall, and fasten the flange to the duct using the #12 sheet metal screws provided.

GASKET OR SEALANT FOR HIGH TEMPERATURE

DUCT MOUNT PLATE WITH THREADED COUPLING

285/15-490018-901, /15-490039-901

2-21

#12 SHEET

METAL SCREWS

285/15-490022-901

3. Remove the packing gland from the Annubar, and thread it into the threaded coupling, using teflon tape or pipe sealant.

Rosemount 285

Figure 2-25.

Figure 2-26.

Reference Manual

00809-0100-4028, Rev AA

October 2005

THREADED COUPLING

PACKING GLAND

TEFLON TAPE OR

PIPE SEALANT

4. Remove the packing from the envelope and wrap it around the Annubar three full turns. Insert the Annubar into the mounting until the packing is completely contained within the glad, and the tip of the Annubar is contacting the opposite side of the duct wall. Place the lock washers over the studs on the packing gland and hand tighten the nuts.

(3) THREE FULL

TURNS

PACKING FROM ENVELOPE

285/ 15-490040-901

NNUBAR ASSEMBLY

5. Align the flow arrow on the Annubar with the flow direction in the duct and tighten the nuts on the packing.

NOTE

Do not over tighten the packing, as this can lead to deforming the opposite wall of the duct.

6. Observe the opposite side of the duct and ensure that the ducting has not deformed.

Step 5: Mount the Transmitter

Direct Mount Head

With Valves

1. Place Teflon (PTFE) O-rings into grooves on the face of head.

2. Align the high side of the transmitter to the high side of the probe (“Hi” is stamped on the side of the head) and install.

3. Tighten the nuts in a cross pattern to 400 in•lb (45 N•m).

285/ 15-490041-901

2-22

Rosemount 285

Reference Manual

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October 2005

Without Valves

1. Place Teflon (PTFE) O-rings into grooves on the face of head.

2. Orient the equalizer valve or valves so they are easily accessible. Install manifold with the smooth face mating to the face of the head. Tighten in cross pattern to a torque of 400 in•lb (45 N•m).

3. Place Teflon (PTFE) O-rings into grooves on the face of the manifold.

4. Align the high side of the transmitter to the high side of the probe (“Hi” is stamped on the side of the head) and install.

5. Tighten the nuts in a cross pattern to 400 in•lb (45 N•m).

Remote Mount Head

See “Remote Mount” on page 2-9 for more information.

Gas Applications

Secure the electronics above the sensor to prevent condensable liquids from collecting in the impulse piping and the DP cell.

2-23

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October 2005

2-24

Reference Manual

00809-0100-4028, Rev AA October 2005

Section 3 Commissioning

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-5

Commissioning on the Bench . . . . . . . . . . . . . . . . . . . . . . page 3-5

Commissioning the 285 with the 2024 transmitter . . . . . page 3-6

COMMISIONING THE 951 TRANSMITTER

Rosemount 285

Step 1: Mount the Transmitter

Gas Flow Applications

• Non-corrosive, non-combustible, and non-condensing gas only.

•Restrain

• Process connections should be mounted horizontally or vertically for best performance.

• Pressure maximum may be limited by connector.

Figure 1. Rosemount 951 Transmitter

Figure 2. Rosemount 951 Transmitter Flush Mount

/8 Hex when torquing process adaptors or connections.

Power ±signal 4-20 mA Connection

* or factory installed adaptors

Process Connections

/8 inch NPT fitting *

H = High Pressure

L = Low Pressure

Bracket Screws

951/951_01ae.eps

www.rosemount.com

Figure 3. Rosemount 951 Transmitter Panel Mount

Note: Screws provided by installer depending on surface.

951/951_02a.eps

Rosemount 285

Figure 4. Rosemount 951 Transmitter Side Mount

Note: Screws provided by installer depending on surface.

951/951_04ab.eps

Note: Screws provided by installer depending on surface.

951/951_03a.eps

Reference Manual

00809-0100-4028, Rev AA

October 2005

Step 2: Connect Wiring and Power Up

1. Connect the positive lead to the "+" terminal, and the negative lead to the "–" terminal.

NOTE

Twisted pairs yield best results; shielded signal wiring is not necessary. Use 24 AWG or larger wire and do not exceed 5,000 feet (1,500 meters).

Figure 5 shows the wiring connections necessary to power a Rosemount 951 and enable communications with a hand-held HART communicator.

Figure 5. Rosemount 951 Wiring

Rosemount

951

RL ≥ 250 Ω

HART Communicator

Power Supply

951/951_05ab.eps

Power Supply

The dc power supply should provide power with less than two percent ripple. The total resistance load is the sum of the resistance of the signal leads and the load resistance of the controller, indicator, and related pieces.

Figure 6. Power Supply Load Limitations, 4–20 mA Transmitters

3-2

Reference Manual

00809-0100-4028, Rev AA October 2005

Max. Loop Resistance = 43.5 ⫻ (Power Supply Voltage – 10.5)

1388

1109

1000

500

Load (Ohms)

Operating Region

Rosemount 285

Step 3: Configure the Transmitter

10.5

Communication requires a minimum loop resistance of 250 ohms.

Voltage (V dc)

951-0103c

A check (⻫) indicates the basic configuration parameters. At minimum, these parameters should be verified as part of the configuration and startup procedure if a HART Communicator is used.

Function HART Fast Key Sequence

Alarm Level Config. 1, 4, 2, 7, 6 Alarm and Saturation Levels 1, 4, 2, 7 Analog Output Alarm Direction 1, 4, 2, 7, 1 Analog Output Trim 1, 2, 3, 2 Burst Mode On/Off 1, 4, 3, 3, 3 Burst Options 1, 4, 3, 3, 4

⻫ Damping 1, 3, 6

Date 1, 3, 4, 1 Descriptor 1, 3, 4, 2 Digital To Analog Trim (4-20 mA Output) 1, 2, 3, 2, 1 Field Device Information 1, 4, 4, 1 Loop Test 1, 2, 2 Lower Sensor Trim 1, 2, 3, 3, 2 Message 1, 3, 4, 3 Number of Requested Preambles 1, 4, 3, 3, 2 Poll Address 1, 4, 3, 3, 1 Poll a Multidropped Transmitter Left Arrow, 4, 1, 1 Rerange- Keypad Input 1, 2, 3, 1, 1 Saturation Level Config. 1, 4, 2, 7, 7 Scaled D/A Trim (4–20 mA Output) 1, 2, 3, 2, 2 Self Test (Transmitter) 1, 2, 1, 1 Sensor Information 1, 4, 4, 2 Sensor Temperature 1, 1, 4 Sensor Trim 1, 2, 3, 3 Sensor Trim Points 1, 2, 3, 3, 5 Status 1, 2, 1, 2

⻫ Tag 1, 3, 1 ⻫ Transfer Function (Setting Output Type) 1, 3, 5 ⻫ Units (Process Variable) 1, 3, 2

Upper Sensor Trim 1, 2, 3, 3, 3 Zero Trim 1, 2, 3, 3, 1

Step 4: Trim the Transmitter

NOTE

Transmitters are shipped from Rosemount Inc. fully calibrated per request or by the factory default of full scale (span = upper range limit.)

Zero Trim

A zero trim is a single-point adjustment used for compensating mounting position. When performing a zero trim, ensure that the equalizing valve is open (if present).

If zero offset is less than 3% of true zero, follow the “Using the 275/375 HART Communicator” instructions below to perform a zero trim. If zero offset is greater than 3% of true zero, follow the “Local Re-ranging and Trim” instructions below to rerange.

3-3

Rosemount 285

Reference Manual

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October 2005

Using the 275/375 HART Communicator

HART Fast Keys Steps

1, 2, 3, 3, 1

Local Re-ranging and Trim

Both 4 and 20 mA points can be adjusted at the transmitter to a desired zero and full scale using the adjustment key or LCD adjustment buttons while powered.

Caution: Make sure no high voltage is present.

NOTE:

More comprehensive adjustment is possible with a HART Communicator.

Zero - 4 mA point

Without an LCD meter

1. Using an appropriate quality pressure source, apply a pressure equivalent to the desired lower range value to the transmitter. If zero, make sure the High (H) and Low (L) pressure ports are at the same pressure.

2. Touch the key to the terminals, as shown in Figure 7, for at least two seconds but no longer than ten seconds.

With an LCD meter

2. Push and hold the zero LCD adjustment button for at least two seconds but no longer than ten seconds.

Figure 7. Zero 4 mA

1. Equalize or vent the transmitter and connect HART communicator.

2. At the menu, input the HART Fast Key sequence.

3. Follow the commands to perform a zero trim.

Span 20 mA

Zero 4 mA

951/951_01ac.eps

Span - 20 mA point

Without an LCD meter

1. Using an appropriate quality pressure source, apply a pressure equivalent to the desired upper range value.

2. Touch the key to the terminals, as shown in Figure 8, for at least two seconds but no longer than ten seconds.

With an LCD meter

1. Using an appropriate quality pressure source, apply a pressure equivalent to the desired upper range value.

2. Push and hold the span LCD adjustment button for at least two seconds but no longer than ten seconds.

NOTE:

The Span is maintained when the 4 mA point is set. The span changes only when the 20 mA point is set. Changing the span should not be required as a result of installation.

Figure 8. Span 20 mA

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Span 20 mA

Zero 4 mA

951/951_01ad.eps

October 2005

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.

COMMISSIONING ON THE BENCH

Explosions could result in death or serious injury:

• Do not remove the transmitter cover in explosive atmospheres when the circuit is live.

• Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications.

• Both transmitter covers must be fully engaged to meet explosion-proof requirements.

Failure to follow these installation guidelines could result in death or serious injury:

• Make sure only qualified personnel perform the installation.

• If the line is pressurized, serious injury or death could occur by opening valves.

Commissioning consists of testing the flowmeter, testing the loop, and verifying the flowmeter configuration data. The flowmeter can be commissioned either before (on the bench) or after (in the field) installation. Commissioning on the bench ensures that all flowmeter components are in good working order and acquaints the user with the operation of the device.

To avoid exposing the flowmeter electronics to the environment after installation, set the failure mode and flowmeter security switches while commissioning the flowmeter on the bench.

Figure 2-4 on page 2-5 identifies the valves on a 3-valve manifold. Table 2-1 on page 2-6 explains the purpose of these valves.

3-5

Complete the following tasks before beginning the commissioning procedure:

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1. Connect an appropriate readout instrument so the differential pressure signal can be monitored.

2. Identify the manifold equalizer valves by their ME prefix. 3-valve manifolds have one equalizer valve, ME.

3. Close all valves before commissioning the system.

COMMISSIONING THE

For complete 2024 transmitter information, refer to manual 00809-0100-4592.

285 WITH THE 2024 TRANSMITTER

Direct Mount Liquid Service

1. Open the high and low manifold valves MH and ML.

2. Open the equalizer valve ME.

3. Open the drain/vent valves on the electronics DVL and DVH; bleed until no air is apparent in the liquid.

4. Close both drain/vent valves DVL and DVH.

5. Close the high and low manifold valves MH and ML.

6. Check the electronics zero by noting the output—this is called a wet zero. If the signal reads outside of the range 3.98 mA to 4.02 mA, air is probably still in the system; repeat step 2, and trim zero if necessary.

7. Open the high and low manifold valves ML and MH.

8. Close equalizer valve ME. The system is now operational.

Liquid Service 3-Valve Manifold

Dry Zero

1. Prior to commissioning the flowmeter a dry zero should be performed to eliminate any positional effects to the transmitter.

2. Keeping both the high and low main valves closed MH and ML open the equalizer valve ME.

3. Perform a zero trim

4. Check the electronics zero by noting the output. If the signal reads outside of the range 3.98 mA to 4.02 mA then repeat step 3 and 4.

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Wet Zero

1. Open the High and Low manifold valves MH and ML.

2. Open the Equalizer valve ME.

3. Open the drain/vent valves on the electronics DVH and DVL; bleed until no air is apparent in the liquid.

4. Close both drain/vent valve DVH and DVL.

5. Close the High side valve MH.

6. Check the electronics zero by noting the output. If the signal reads outside of the range 3.98 mA to 4.02 mA then perform a zero trim.

7. Check the electronics zero by noting the output. If the signal reads outside of the range 3.98 mA to 4.02 mA then repeat steps 1 - 6.

8. Close the Equalizer valve ME.

9. Open the High side valve MH and ensure that the Low side valve ML is open.

10. The system is now operational.

Figure 3-1. Valve Identification for Direct Mounted Annubar model in Liquid Service

DVL

DVH

Gas Service

1. Ensure that the pipe is pressurized.

2. Open both high and low side main valves MH and ML.

3. Open equalization valve ME.

4. Open the drain valves DVL and DVH on the electronics to ensure that no liquid is present.

5. Close drain valves DVL and DVH.

6. Check the electronics for the 4 mA signal. Trim zero if necessary.

7. Close the equalizer valve ME. The system is now operational.

2024/2024A24A.EPS

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Gas Service 3-Valve Manifold

Dry Zero

1. Prior to commissioning the flowmeter a dry zero should be performed to eliminate any positional effects to the transmitter.

2. Keeping both the high and low main valves closed MH and ML open the equalizer valve ME.

3. Perform a zero trim.

4. Check the electronics zero by noting the output. If the signal reads outside of the range 3.98 mA to 4.02 mA then repeat step 3.

Zero 4 mA

Span 20 mA

951/951_01ad.eps

Wet Zero

1. Open the High and Low manifold valves MH and ML.

2. Open the Equalizer valve ME.

3. Open the drain/vent valves on the electronics DVH and DVL; bleed to ensure that no liquid is present.

4. Close both drain/vent valve DVH and DVL.

5. Close the High side valve MH.

6. Check the electronics zero by noting the output. If the signal reads outside of the range 3.98 mA to 4.02 mA then perform a zero trim.

7. Check the electronics zero by noting the output. If the signal reads outside of the range 3.98 mA to 4.02 mA then repeat steps 1 - 6.

8. Close the Equalizer valve ME.

9. Open the High side valve MH, ensure that the Low side valve ML is open. The system is now operational.

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Figure 3-2. Valve Identification for Direct Mounted Model in Gas Service

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DVH

DVL

Steam Service

1. Ensure that the steam line is depressurized with no steam.

2. Check the electronics for a dry zero of 4 mA with no water loss.

3. Open the high and low main valves MH and ML and equalizer valve ME.

4. Close low side vent DVL on the electronics.

5. Close the high MH for 30 seconds to force water to the ML side.

6. Re-open the MH valve.

7. Open low side vent DVL on the electronics until no air is observed.

8. Close the vent.

9. Close the hose connect valve.

10. Close both MH and ML.

11. Check the instrument zero by noting the electronics output. If the signal reads outside of the range 3.98 mA to 4.02 mA, air is probably still in the system; repeat this procedure from step 2, and trim sensor if necessary.

12. Open MH and ML.

13. Close equalizer valve ME. The system is now operational.

2024/2024A24A.EPS

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3-Valve Steam No Flow

1. Prior to commissioning the flowmeter a dry zero should be performed to eliminate any positional effects to the transmitter.

2. Keeping both the high and low main valves closed MH and ML open the equalizer valve ME.

3. Perform a zero trim (see “Trim the Transmitter” on page 3-26).

4. Check the electronics zero by noting the output. If the signal reads outside of the range 3.98 mA to 4.02 mA then repeat step 3.

5. Verify that the line is depressurized with no steam.

6. Open the High and Low main valves as well as the equalizer valve MH, ML and ME.

7. Close low side vent DVL on the electronics.

8. Open the hose connect valve for a minimum of 30 seconds. Water will flow through both the high and low chambers and into the pipe.

9. Close the high valve MH for 30 seconds to force water to the Low side.

10. Re-open the main High valve MH.

11. Open the low side vent DVL on the electronics until no air is observed.

12. Close the low side vent DVL.

13. Open both the high and low main valves MH and ML and close the equalizer valve ME.

14. The sensor is ready for flow.

15. After flow has been started and allowed to reach operating conditions a wet zero needs to be performed.

16. Using the drain/vent valves on the electronics DVH and DVL; burp (carefully crack vents open and closed to ensure that no air is present, this may need to be done more than one time.)

17. Close the High side main valve MH.

18. Open the Equalizer valve ME.

19. Check the electronics zero by noting the output. If the signal reads outside of the range 3.98 mA to 4.02 mA then perform a zero trim.

20. After zero trim is done check the electronics zero by noting the output. If the signal reads outside of the range 3.98 mA to 4.02 mA. Set sensor back to flow by closing the Equalizer valve ME and opening the High side valve MH. Repeat steps 14 - 17.

21. Close the Equalizer valve ME.

22. Open the High side valve MH, ensure that the Low side valve ML is open. The system is now operational

Remote Mount Zero the Electronics

Before the electronics are exposed to line pressure, check the “zero” calibration (or, “dry” zero) by using the following procedure.

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1. Open first the equalizer valve(s) MEL and MEH or ME.

2. Close valves MH and ML.

3. Read the Annubar output. It should read within the range 3.98 mA to

4.02 mA. If the output is outside of this range, zero trim.

Check for System Leaks

Check the system for leaks after installation is complete. A leak in a differential pressure instrument system can produce a difference in pressure that is larger than the signal itself.

Before the system is filled and/or commissioned, it is a simple matter to use compressed air or another inert, compressed gas to check for leaks. The gas pressure must be below the maximum allowed, but at least equal to the normal operating pressure in order to reveal potential leaks. A typical pressure used is 100 psig (690 kPa).

Before pressurizing the system, check for leaks by doing the following:

1. Open equalizer valve(s) MEH, MEL or ME to prevent overpressuring the DP.

2. Close valves PH, PL (unless the piping system is also being pressure-checked), MV, DVH, DVL.

If present, also close valves BH and BL or DH and DL.

3. Open valves MH and ML.

4. Install all appropriate tapped plugs.

5. Install a current meter to read the signal, if necessary.

Apply pressure at a convenient point on either the high or low side of the system. Use a suitable leak detection solution and apply to all of the impulse piping, valves, manifold, and connections. A leak is indicated by a continuous stream of bubbles.

“Calibrate Out” Temperature Effects

NOTE

Do not begin this procedure until the system leak check has been completed and all leaks have been fixed.

The flowmeter’s proportional output-to-flow ratio makes a true “zero” calibration critical for producing accurate measurements. The “zero” calibration procedure is affected by static pressure and ambient temperature, but these effects can be removed by calibrating them “out.”

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The effect of static pressure is calibrated out by exposing the Annubar electronics to the line pressure and performing a “zero” or wet calibration, as described below. In order to calibrate out the effect of ambient temperature, two aspects should be taken into consideration:

• The electronics should be located where the ambient temperature does

not change rapidly or vary by more than 10 to 15 °F (26 to 29 °C).

• When commissioning the electronics, the flowing fluid

(condensate/water for steam service) could bring the sensor to a temperature significantly different than the temperature during normal operations. In this situation, perform another “zero” calibration at least 60 minutes after the Annubar Primary Element has been commissioned.

Although the above effects are relatively small, they significantly affect the accuracy of the Annubar when used with low flows.

Periodic “zero” calibration and/or commissioning is recommended to maintain the accuracy of Annubar. The frequency of this type of maintenance should be established for each individual application.

Zero or Wet Calibration

Follow this procedure to obtain a true zero at static or “pipe” pressure:

1. Open ME and high side MH equalizer valves:

2. Close low side valve ML to prevent generating differential pressure.

Liquid Service below 250 °F (121 °C)

1. Ensure that primary instrument valves PH and PL are closed.

2. Open valves ME, ML, and MH.

3. Slowly open valve PL and then PH, which are the primary instrument valves.

4. Open drain/vent valves DVL and DVH to bleed air out of system. Bleed until no air is apparent in the liquid.

5. Close valves DVL and DVH.

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NOTE

For the alternate electronics location, open vent valves VH and VL and bleed until no air is apparent in the liquid.

6. Slowly open vent valve MV to bleed out any entrapped air in manifold. Bleed until no air is apparent in the liquid.

7. Close vent valve MV.

8. Gently tap the electronics body, valve manifold, and impulse piping with a small wrench to dislodge any remaining entrapped air.

9. Repeat steps 2, 2A, and 3.

10. Close valve PH.

11. Check the Annubar zero by noting the electronics output — this is called a wet zero. The electronics should indicate a zero DP (Differential Pressure) signal. If the signal reads outside the range

3.98 mA to 4.02 mA, air is probably still in the system; repeat the procedure from step 2. Trim zero if necessary.

12. Close ME equalizer valve(s).

13. Slowly open valve PH. The system is now operational.

Gas Service

1. For an impulse piping arrangement as shown in Figure (vertical pipe) only, open primary instrument valves PH and PL.

2. Open drain valves DH and DL slowly to allow the condensate to drain.

3. Close valves DH and DL.

4. Ensure that primary instrument valves PH and PL closed.

5. Open valves ME, ML and MH.

6. Slowly open valve PL, the primary high pressure instrument valve.

7. Check electronics zero by noting the electronics reading. The electronics should indicate a “zero” DP signal. If the signal reads outside of the range 3.98 mA to 4.02 mA, condensate may be in the DP electronics or system; repeat the procedure from step 1 to remove any condensate. A signal outside the range 3.98 mA to 4.02 mA can also be caused by system leaks; check for leaks in system.

8. Close ME equalizer valve(s).

9. Slowly open valve PH. The system is now operational.

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Figure 3-3. Valve Identification for Direct Mounted Annubar model in Steam Service or Liquid Service above 250 °F (121 °C)

Valve Identification for Direct Mounted Annubar

DVL

DVH

Steam Service or Liquid Service above 250 °F (121 °C)

1. Ensure that primary instrument valves PH and PL closed; ME, ML and MH are closed; and DVL and DVH are closed.

2. Fill tees with water on each side until water overflows.

3. Open valves MH, ML and equalizer valve ME.

4. Open valves DVL and DVH.

5. Tap manifold until no air bubbles are visible.

6. Close both valves DVL and DVH.

7. Refill tees with water.

8. Gently tap electronics body, valve manifold, and impulse piping with a small wrench to dislodge any remaining entrapped air.

9. Check Annubar zero by noting the electronics output — this is called a wet zero. The electronics should indicate a “zero” DP signal. If the signal reads outside of the range 3.98 mA to 4.02 mA, air is probably still in the system; repeat this procedure from step 2. Trim zero if necessary.

10. Close equalizer valve ME.

11. Replace plugs in tees.

12. Slowly open valves PH and PL. The system is now operational.

2024/2024A24A.EPS

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Section 4 Operation and Maintenance

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-2

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3

SAFETY MESSAGES Procedures and instructions in this section may require special precautions to

ensure the safety of the personnel performing the operations. Information that raises potential safety issues is indicated by a warning symbol ( ). Refer to the following safety messages before performing an operation preceded by this symbol.

Explosions can result in death or serious injury.

• Do not remove the instrument cover in explosive environments when the circuit is live.

• Both transmitter covers must be fully engaged to meet explosion-proof requirements.

• Before connecting a communicator in an explosive atmosphere, make sure the instruments in the loop are installed in accordance with intrinsically safe or nonincendive field wiring practices.

Electrical shock can result in death or serious injury.

• Avoid contact with the leads and the terminals.

www.rosemount.com

Reference Manual

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Rosemount 285

October 2005

TROUBLESHOOTING If a malfunction is suspected despite the absence of a diagnostic messages

on the communicator display, follow the procedures described below to verify that the flowmeter hardware and process connections are in good working order. Always approach the most likely and easiest-to-check conditions first.

Table 4-1. 285 Troubleshooting

Symptom Possible Cause Corrective Action

Questionable accuracy or erroneous flow signal

Improper installation

System leaks

Contamination/plugging

Closed valve

Calibration

Connections (remote mount only)

Entrapped air (liquid applications)

Annubar Primary Element misalignment

Opposite-side support duct mount

Operating conditions

• Is the flow arrow pointed in the direction of the flow?

• Verify that the cross reservoirs are perfectly level with one another

• Is there sufficient straight run upstream and downstream of the flowmeter?

• Check for leaks in instrument piping. Repair and seal all leaks.

• Remove the flowmeter and check for contamination.

• Verify that both manifold (MH & ML) valves are open. Verify that vent, equalizer, and line valves are properly positioned per the “start up procedure.”

• Is the calibration too high or low for the flow rate?

• Verify that the high side of the electronics is connected to the high side of the flowmeter. Check the same for the low side.

• Are there uneven water legs caused by air entrapment in the instrument connections? If so, bleed air.

• Misalignment of the flowmeter beyond 3 degrees will cause an erroneous signal.

• If the flowmeter is an opposite-side support model, is it installed through the pipe wall and into the nut?

• Are the operating conditions in compliance with those given at the time the flowmeter was purchased? Check the flow calculation and the fluid parameters for accuracy. Double-check pipe inside diameter for proper sizing.

Spiking flow signal Two-phase flow

Spiking flow signal (Stream Service)

Vibration of sensor or leakage at Pak-Lok fitting

No response to changes in applied flow

Low reading/high reading

Erratic reading for pressure variable

4-2

Improper insulation (Vertical pipes only) Excessive vibration

Pak-Lok Compression nut(s) loose

Note: For the multipoint flow calibrated flowmeter, refer to the Handbook for corrections.

• The flowmeter is a head measurement device and will not accurately measure a two-phase flow.

• Added insulation may be required to ensure that a phase change occurs at the cross reservoirs.

• Check the impulse piping for vibration.

• Tighten compression nut(s) until condition is corrected and then ½ turn more only.

• Check test equipment

• Check impulse piping for blockage

• Check for disabled span adjustment

• Check electronics security switch

• Verify calibration settings (4 and 20 mA points)

• Contact factory for replacement

• Check impulse piping for blockage

• Check test equipment

• Contact factory for replacement

• Check impulse piping for blockage

• Check damping

• Check for EMF interference

• Contact factory for replacement

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DISASSEMBLY

Rosemount 285

Remove the Flowmeter from Service

NOTE

Once you have determined a that flowmeter is inoperable, remove it from service.

Be aware of the following:

• Isolate and vent the process from the flowmeter before removing the flowmeter from service.

• Remove all electrical leads and conduit.

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Appendix A Reference Data

Rosemount 285 Annubar Primary Specifications . . . . . . page A-1

Optional Rosemount 2024 Transmitter Specifications . . page A-7 Optional Rosemount 951 Transmitter Specifications . . . page A-9

Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . .page A-12

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-15

ROSEMOUNT 285 ANNUBAR PRIMARY SPECIFICATIONS

Rosemount 285

Performance Specifications

Table A-1. Reynolds Number and Probe Width

Performance Statement Assumptions

Measured pipe I.D.

Repeatability

±0.1%

Line Sizes

• Sensor Size 1: 2-in. to 8-in. (50 to 200 mm)

• Sensor Size 2: 8-in. to 36 in (915mm) For larger line sizes, consult factory.

Sensor Size Minimum Rod Reynolds Number (Rd) Probe Width (d) (inches)

1 6500 0.590-in. (14.99 mm) 2 12500 1.060-in. (26.92 mm)

Where

dv× p×

--------------------- -=

d = Probe width (feet) v = Velocity of fluid (ft/sec)

p = Density of fluid (lbm/ft

μ = Viscosity of the fluid (lbm/ft-sec)

)

Sizing

Contact an Emerson Process Management representative for assistance. A Configuration Data Sheet is required prior to order for application verification.

www.rosemount.com

Flow Turndown

10:1or better

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Functional Specifications

Service

•Liquid

•Gas

• Steam (limited)

Temperature Limits

• -40 to 300°F

• -40 to 850°F for Duct Mount Version (D1) only

Pressure Limits

• Pak-Lok: 150# ANSI

• Duct Mount (D1 & D2): 10 PSIG

Pressure and Temperature Limits

Direct Mount Electronics

• Up to 150# ANSI (275 psig at 100 °F (19 bar at 38 °C))

• Integral temperature measurement is not available.

Remote Mount Electronics

• Up to 150# ANSI (275 psig at 100 °F (19 bar at 38 °C)).

• Integral temperature measurement is not available.

(1)

Physical Specifications Annubar Sensor Material

• 316 Stainless Steel

Pak-Lock

See “Dimensional Drawings” on page A-12 Pak-Lok Model (option P1)

• Provided with a compression sealing mechanism rated up to 150# ANSI (275 psig at 100 °F (19 bar at 38 °C))

• Teflon Packing (–40 to 300 °F (–40 to 149 °C))

Duct Mount

See “Dimensional Drawings” on page A-13. Duct Mount without Compression Fitting Model (option D1)

• Provided with duct mounting rated up to 10 psig at 850°F (0.6 bar at 454°C).

Duct Mount with Compression Fitting

See “Dimensional Drawings” on page A-14. Duct Mount with Compression Fitting Model (option D2)

• Provided with duct mount compression fitting rated up to 10 psig at 300°F (0.6 bar at 38°C).

A-2

(1) Annubar option selections may effect pressure and temperature limitations.

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Table A-2. Minimum / Maximum Temperature Range

Rosemount 285

Instrument Connections Temperature Ranges

Code Description Temperature

G1 Needle Valves, Carbon Steel -40 to 500°F (-40 to 260°C) G2 Needle Valves, Stainless Steel -40 to 500°F (-40 to 260°C) B1 Ball Valve, Carbon Steel -40 to 300°F (-40 to 149°C) B2 Ball Valve, Stainless Steel -40 to 300°F (-40 to 149°C)

Installation Considerations

Straight Run Requirements

(1)

Upstream Dimensions

Without Vanes

Plane

—

Out of

Plane

—

(2)

A’ C C’

—8—4—44

With

Vanes

(3)

Dimensions

Downstream

—

—8—4—44

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Straight Run Requirements

(1)

Upstream Dimensions

Without Vanes

Plane

—

Out of

Plane

—

(2)

A’ C C’

—8—4—44

With

Vanes

(3)

Dimensions

Downstream

—

(1) Consult the factory for instructions regarding use in

square or rectangular ducts.

(2) “In Plane A” means the bar is in the same plane as the elbow. “Out of Plane A” means the bar is

perpendicular to the plane of the elbow.

(3) Use straightening vane to reduce the required straight run length.

—

—8—4—44

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Rosemount 285

Table 1. Minimum straight duct requirements for the 285 Annubar

Upstream Length Downstream Length

15W

285/15-490028-901

285/15-490029-901

7W 2W

15W 2W

285/15-490030-90

7W 2W

15W

285/15-490031-90

15W 2W

DAMPER

285/15-490032-901

A-5

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Flowmeter Orientation

Gas (Horizontal)

120

Liquid and Steam (Horizontal)

30°

120°

Gas (Vertical)

FLOW

360

15-490000-901

30°

15-490001-901

15-490002-901

A-6

Steam (Vertical)

360

Drill Hole Size According to Sensor Size

Sensor Size Diameter

1 2 15/16-in. (33 mm)

/4-in. (19 mm)

FLOW

15-490003-901

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OPTIONAL ROSEMOUNT 2024 TRANSMITTER SPECIFICATIONS

Rosemount 285

Performance Specifications

(Zero-based spans, reference conditions, and 316L SST isolating diaphragms)

Accuracy

±0.25% of calibrated span. Includes combined effects of linearity, hysteresis, and repeatability.

Dead Band

None

Stability

±0.25% of upper range limit for six months

Temperature Effect (Total)

Less than ±1.5% of upper range limit per 100 °F (55 °C)

Static Pressure Effect

Zero Error

• Less than ±0.5% of upper range limit per 1,000 psi (6.9 MPa). Correctable through rezeroing at line pressure

Span Error

• Less than ±0.5% of reading per 1,000 psi (6.9 MPa)

Vibration Effect

Less than ±0.1% of upper range limit shift per test condition of SAMA PMC

31.1 Section 5.3

Functional Specifications

Power Supply Effect

Less than ±0.01% of calibrated span per volt

Load Effect

Output Code A

• No load effect other than the change in voltage supplied to the transmitter

Mounting Position Effect

Zero shift of up to 3.0 inH

Service

Liquid, gas, and vapor

Range

Code 2: 0–50 to 0–250 inH

Output

Code A: 4–20 mA dc, linear to DP

Power Supply

External power supply required

O (0.75 kPa), which can be calibrated

O (0–12.4 to 0–62.2 kPa)

A-7

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Output Code A: Operates on 12 to 36 V dc, with no load

Load Limitations

Output Code A

Maximum Load = 50 ⫻ (Power Supply Voltage – 12)

Span and Zero

Continuously adjustable

Temperature Limits

Process

• –20 to 220 °F (–29 to 104 °C)

Ambient

• –40 to 185 °F (–40 to 85 °C)

Storage

• –50 to 185 °F (–46 to 85 °C)

1200 1000

800 600 400

Load (Ohms)

200

12 16 20 24 28 32 36

Power Supply (V dc)

(1)

Operating

Region

October 2005

Static Pressure and Overpressure Limits

0 psia to 2,000 psig (0 to 13.79 MPa) on either side without damage to the transmitter. Operates within specifications between static line pressures of

14.7 psia and 2,000 psig (0.1 to 13.79 MPa). 6,000 psig (41.37 MPa) burst pressure

Humidity Limits

0 to 100% relative humidity

Damping

Fixed at a maximum of 0.2 second at reference conditions

Turn-on Tim e

Output Code A

• 1.5 seconds maximum at reference operating conditions

A-8

(1) Electronics temperature limits decrease three degrees for every one degree increase in pro-

cess temperature above 185 °F (85 °C).

Reference Manual

00809-0100-4028, Rev AA October 2005

Optional 2024 Specifications Continued

Physical Specifications Process Connections

/4–18 NPT on 21/8-inch (54 mm) center

Electrical Connections

/2–14 NPT conduit connection, screw terminals, and internal grounding stud

Weight

6 lb. (2.7 kg) excluding options

Materials of Construction

Isolating Diaphragms

• 316L SST

Drain/Vent Valves

•316 SST

Flange

•316 SST

Wetted O-rings

• Glass filled TFE

Fill Fluid

• Silicone oil

Bolts

• Plated carbon steel

Electronics Housing

• Low-copper aluminum. NEMA 4X

Paint

• Polyurethane

Rosemount 285

Calibration Transmitters are factory calibrated to customer's specified range. If calibration

is not specified, transmitters are calibrated at maximum range. Calibration is at ambient temperature and pressure.

OPTIONAL ROSEMOUNT 951 TRANSMITTER SPECIFICATIONS

Performance Specifications

Reference Accuracy

±0.25% of span for spans 1:1 to 6:1 ±0.04% of URL for spans 6:1 to 40:1

Ambient Temperature Effect

±0.25% URL + 0.05% of Span per 50°F (28°C)

Mounting Effect

Zero shifts up to ± 0.01 inH No span effect.

O which can be calibrated out.

A-9

Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

Time Response

Less than 200 milliseconds

Stability

0.125% of URL for 12 months

Power Supply Effect

Less than ±0.01% of calibrated span per volt

Functional Specifications

Figure A-1. Power Supply Load Limitations, 4–20 mA Transmitters

DP/GP Pressure Ranges

Range and Sensor Limits

Range Minimum Span

1 1.25 inH2O

(3.10 mbar)

Upper (URL) Lower (LRL)

25 inH2O (62.3 mbar)

-25 inH2O (-62.3 mbar)

Service

Non-condensing (0-95% relative humidity), non-combustible, non-corrosive, and clean gases.

Output

2-wire 4-20 mA; linear or square root

HART

digital communication and configuration

Power Supply & Load Limits

External Power Supply required 10.5 to 36 V Minimum 250 Ohms loop resistance for digital communications

Max. Loop Resistance = 43.5 ⫻ (Power Supply Voltage – 10.5)

1388

1109

1000

A-10

500

Load (Ohms)

10.5

Voltage (V dc)

Communication requires a minimum loop resistance of 250 ohm

Operating Region

951/0103C

Process and Ambient Temperature Limits

-40 to 185°F (-40 to 85°C)

Static and Overpressure Limit

100 psi (6,89 bar)

Reference Manual

00809-0100-4028, Rev AA October 2005

Table A-3. Alarm Configuration

Rosemount 285

Burst Pressure

500 psi (34,47 bar)

Humidity Limits

0-95% relative humidity

Damping

Analog output response to a step input change is user-selectable from 0 to 60 seconds for one time constant. This software damping is in addition to sensor module response time.

Failure Mode Alarm

If self-diagnostics detect a gross transmitter failure, the analog signal will be driven offscale to alert the user.

High Alarm Low Alarm

Default - High Alarm ≥ 21.75 mA ≤ 3.75 mA

Turn-On Time

Performance within specifications less than 2.0 seconds after power is applied to the transmitter

Physical Specifications Process Connections

/8 inch NPT stainless fittings to accommodate

any process connection Process Connections include HDPE internal filter

Housing

NEMA 4X Delrin IP 65 Anodized aluminum side mount bracket

Materials Exposed to Gases

•HAVAR

•Nitronic® 32

• Hastelloy C-276

• Ceramic

• Silicon Dioxide

Sensor Module Fill Fluid

None

Acetal

Shipping Weight

Approximately 1 lb. (0,45 kg.)

Electrical Connections

Terminal block with HART interface connections

A-11

Rosemount 285

DIMENSIONAL DRAWINGS

Reference Manual

00809-0100-4028, Rev AA

October 2005

Pak-Lok Rosemount 285 Annubar Primary

Front View Side View Top View

(1)

REMOTE MOUNT HEAD OPTION

(1) The Pak-Lok Annubar model is available up to 150# ANSI (275 psig at 100 °F (19 bar at 38 °C)).

TABLE 2. Rosemount 285 Annubar Primary - Pak-Lok

Sensor Size A (Max) B (Max) C (Max)

1 8.50 (215.9) 5.00 (127.0) 9.00 (228.6) 2 11.00 (279.4) 5.00 (127.0) 9.00 (228.6)

Dimensions are in inches (millimeters)

/4-in. NPT

Connection

A-12

Reference Manual

00809-0100-4028, Rev AA October 2005

Front View Side View Top View

Rosemount 285

Dimensional Drawings (continued)

Duct Mount 285 Annubar Primary

TABLE 3. Rosemount 285 Annubar with Duct Mount

Sensor Size A (Max)

1 7.00 (177.8) 2 9.00 (228.6)

Dimensions are in inches (millimeters)

DIRECT MOUNT HEAD OPTION

WITH VALVES

285/15-49006-901,/15-49006-902, 15-49006-903

A-13

Rosemount 285

Duct Mount with Compression Fitting 285 Annubar Primary

Front View Side View Top View

Reference Manual

00809-0100-4028, Rev AA

October 2005

Dimensional Drawings (continued)

Note Maximum opposite side stud length is 1

Sensor Size A (Max)

1 8.50 (215.9) 2 11.00 (279.4)

/2-in. (38 mm) long.

TABLE 4. Duct Mount with Compression Fitting

Dimensions are in inches (millimeters)

DIRECT MOUNT HEAD OPTION

WITH VALVES

A-14

Reference Manual

00809-0100-4028, Rev AA October 2005

Rosemount 285

ORDERING INFORMATION

Rosemount 285 Annubar Primary Ordering Information

Model DP Flow Primary Type

285 Economy Annubar

Code Fluid Type

LLiquid G Gas S Steam

Code Line Size

020 2-in. (50 mm) 025 21/2-in. (63.5 mm) 030 3-in. (80 mm) 035 31/2-in. (89 mm) 040 4-in. (100 mm) 050 5-in. (125 mm) 060 6-in. (150 mm) 080 8-in. (200 mm) 100 10-in. (250 mm) 120 12-in. (300 mm) 140 14-in. (350 mm) 160 16-in. (400 mm) 180 18-in. (450 mm) 200 20-in. (500 mm) 240 24-in. (600 mm) 300 30-in. (750 mm) 360 36-in. (900 mm) 420 42-in. (1066 mm) 480 48-in. (1210 mm) 600 60-in. (1520 mm) 720 72-in. (1820 mm)

Code Pipe I.D. Range (Refer to Pipe ID Range Table for Code)

A Range A from the Pipe I.D. table B Range B from the Pipe I.D. table C Range C from the Pipe I.D. table D Range D from the Pipe I.D. table E Range E from the Pipe I.D. table Z Non-standard Pipe I.D. Range or Line Sizes greater than 12 inches (sensor size 2) or greater than 8 inches (sensor size 1).

Code Piping Configuration

CCircular R Rectangular or Square

Code Pipe Material/Mounting Assembly Material

C Carbon Steel S 316 Stainless Steel 0 No Mounting (Customer Supplied)

Code Annubar Typ e

P1 Pak-Lok D1 Duct Mount Plate without Compression Fitting D2 Duct Mount Plate with Compression Fitting

Continued on Next Page

A-15

Reference Manual

00809-0100-4028, Rev AA

Rosemount 285

Code Sensor Material

S 316 Stainless Steel

Code Sensor Size

1 Sensor Size 1 2 Sensor Size 2

Code Electronics Connection Platform

3 Direct-mount 7 Remote-mount NPT Connections

Code Options

Instrument Connections for Remote Mount Option

G1 Needle Valves, CS G2 Needle Valves, SS B1 Ball Valves, CS B2 Ball Valves, SS

Variable Mount Height

VM Variable Mounting Height for Customer Supplied Mounting

(1)

X01

(2)

X12

(2)

X22

(2)

X32

(3)

QC1 Visual and Dimensional Inspection w/Cert QC7 Inspection and Performance Certificate

Q8 Material Cert per ISO 10474 3.1.B and EN 10204 3.1.B

Y1 Mounting Hardware Shipped Separately

(1) Available with electronics connection platform code '7' and fluid type 'G' only. Transmitter is supplied with mounting bracket. (2) Minimum span is 50-in. (1270 mm) (3) Applies to 285 Primary Element only (3) If F2 option is ordered with Electronic Connections Platform Code '3' (Direct Mount), manifold is integral to head. If F2 is ordered with Code '7' (Remote

Mount), the manifold is supplied loose.

Transmitter

951 Dry Gas Pressure Transmitter 2024D Range 2 D.P. Transmitter (4-20 mA output) 2024D Range 2 D.P. Transmitter (4-20 mA output) with CSA E.P. / I.S. 2024D Range 2 D.P. Transmitter (4-20 mA output) with FM E.P. / I.S.

Manifold

3-Valve Manifold, SST Special Inspection

Material Traceability Certification

(3)

Special Shipment

October 2005

A-16

Reference Manual

00809-0100-4028, Rev AA October 2005

Rosemount 285

Pipe I.D. Range Code– measured in inches (millimeters)

Line Size

Nominal

2-in. (50 mm)

2 (63.5 mm)

3-in. (80 mm)

3 (89 mm)

4-in.

Size 1

(100 mm)

Sensor

5-in. (125 mm)

6-in. (150 mm)

8-in. (200 mm)

10-in. (250 mm)

Size 2

Sensor

12-in. (300 mm)

/2-in.

Max. O.D.

2.625-in.

(66.68 mm)

3.188-in.

(80.98 mm)

3.75-in.

(95.25 mm)

4.25-in.

(107.95 mm)

5.032-in.

(127.81 mm)

6.094-in.

(154.79 mm)

6.93-in.

(176.02 mm)

9.688-in.

(246.08 mm)

9.688-in.

(246.08 mm)

11.75-in.

(298.45 mm)

13.0375-in.

(331.15 mm)

Option

Code

020

025

030

035

040

050

060

080

100

120

See “Rosemount 285 Annubar Primary Ordering Information” on page A-15 For pipes with an Inner Diameter (I.D.) Range / Pipe Wall Thickness not found

in this table or with a line size greater than 12-in. (300 mm), choose option code Z and specify the exact pipe dimensions (I.D. and Pipe Wall Thickness) on the Configuration Data Sheet (00813-0100-4028). The Emerson process Management sizing program will determine this code, based on the application piping.

Pipe Wall Thickness

Inner Diameter (I.D.) Range

1.784 to 1.841-in. (45.31 to 46.76 mm) 0.065 to 0.545-in.

1.842 to 1.938-in. (46.79 to 49.23 mm) 0.065 to 0.449-in. (1.7 to 11.4 mm) B

1.939 to 2.067-in. (49.25 to 52.50 mm) 0.065 to 0.417-in. (1.7 to 10.6 mm) C

2.068 to 2.206-in. (52.53 to 56.03 mm) 0.065 to 0.407-in. (1.7 to 10.3 mm) D

2.207 to 2.322-in. (56.06 to 58.98 mm) 0.083 to 0.563-in.

2.323 to 2.469-in. (59.00 to 62.71 mm) 0.083 to 0.417-in. (2.1 to 10.6 mm) C

2.470 to 2.598-in. (62.74 to 65.99 mm) 0.083 to 0.435-in. (2.1 to 11.0 mm) D

2.599 to 2.647-in. (66.01 to 67.23 mm) 0.083 to 0.515-in. (2.1 to 13.1 mm) E

2.648 to 2.751-in. (67.26 to 69.88 mm) 0.083 to 0.563-in.

2.752 to 2.899-in. (69.90 to 73.63 mm) 0.083 to 0.416-in. (2.1 to 10.6 mm) B

2.900 to 3.068-in. (73.66 to 77.93 mm) 0.083 to 0.395-in. (2.1 to 10.0 mm) C

3.069 to 3.228-in. (77.95 to 81.99 mm) 0.083 to 0.404-in (2.1 to 10.3 mm) D

3.229 to 3.333-in. (82.02 to 84.66 mm) 0.120 to 0.600-in.

3.334 to 3.548-in. (84.68 to 90.12 mm) 0.120 to 0.386-in. (3.0 to 9.8 mm) C

3.549 to 3.734-in. (90.14 to 94.84 mm) 0.120 to 0.415-in. (3.0 to 10.5 mm) D

3.735 to 3.825-in. (94.87 to 97.16 mm) 0.120 to 0.600-in.

3.826 to 4.026-in. (97.18 to 102.26 mm) 0.120 to 0.400-in. (3.0 to 10.2 mm) C

4.027 to 4.237-in. (102.29 to 107.62 mm) 0.120 to 0.390-in. (3.0 to 9.9 mm) D

4.238 to 4.437-in. (107.65 to 112.70 mm) 0.120 to 0.401-in. (3.0 to 10.2 mm) E

4.438 to 4.571-in. (112.73 to 116.10 mm) 0.134 to 0.614-in.

4.572 to 4.812-in. (116.13 to 122.22 mm) 0.134 to 0.374-in. (3.4 to 9.5 mm) B

4.813 to 5.047-in. (122.25 to 128.19 mm) 0.134 to 0.380-in. (3.4 to 9.7 mm) C

5.048 to 5.249-in. (128.22 to 133.32 mm) 0.134 to 0.413-in. (3.4 to 10.5 mm) D

5.250 to 5.472-in. (133.35 to 138.99 mm) 0.134 to 0.614-in.

5.473 to 5.760-in. (139.01 to 146.30 mm) 0.134 to 0.327-in. (3.4 to 8.3 mm) B

5.761 to 6.065-in. (146.33 to 154.05 mm) 0.134 to 0.310-in. (3.4 to 7.9 mm) C

6.066 to 6.383-in. (154.08 to 162.13 mm) 0.134 to 0.297-in. (3.4 to 7.5 mm) D

7.393 to 7.624-in. (187.78 to 193.65 mm) 0.250 to 0.73-in.

7.625 to 7.981-in. (193.68 to 202.72 mm) 0.250 to 0.374-in. (6.4 to 9.5 mm) C

7.982 to 8.400-in. (202.74 to 213.36 mm) 0.250 to 0.312-in. (6.4 to 7.9 mm) D

8.401 to 8.766-in. (213.39 to 222.66 mm) 0.250 to 0.364-in. (6.4 to 9.2 mm) E

7.393 to 7.624-in. (187.78 to 193.65 mm) 0.250 to 1.47-in.

7.625 to 7.981-in. (193.68 to 202.72 mm) 0.250 to 1.114-in. (6.4 to 28.3 mm) C

7.982 to 8.400-in. (202.74 to 213.36 mm) 0.250 to 1.052-in. (6.4 to 26.7 mm) D

8.401 to 8.766-in. (213.39 to 222.66 mm) 0.250 to 1.104-in. (6.4 to 28.0 mm) E

8.767 to 9.172-in. (222.68 to 232.97 mm) 0.250 to 1.470-in.

9.173 to 9.561-in. (232.99 to 242.85 mm) 0.250 to 1.082-in. (6.4 to 27.5 mm) B

9.562 to 10.020-in. (242.87 to 254.51 mm) 0.250 to 1.012-in. (6.4 to 25.7 mm) C

10.021 to 10.546-in. (254.53 to 267.87 mm) 0.250 to 0.945-in. (6.4 to 24.0 mm) D

10.547 to 10.999-in. (267.89 to 279.37 mm) 0.250 to 1.018-in. (6.4 to 25.9 mm) E

11.000 to 11.373-in. (279.40 to 288.87 mm) 0.250 to 1.470-in.

11.374 to 11.938-in. (288.90 to 303.23 mm) 0.250 to 0.906-in. (6.4 to 23.0 mm) C

11.939 to 12.250-in. (303.25 to 311.15 mm) 0.250 to 1.159-in. (6.4 to 29.4 mm) D

ANSI Pipes Non-ANSI Pipes

(1.7 to 13.8 mm)

(2.1 to 14.3 mm)

(3.0 to 15.2 mm)

(3.4 to 15.6 mm)

(6.4 to 18.5 mm)

(6.4 to 37.3 mm)

0.065 to 0.488-in. (1.7 to 12.4 mm) A

0.083 to 0.448-in. (2.1 to 11.4 mm) B

0.083 to 0.460-in. (2.1 to 11.7 mm) A

0.120 to 0.496-in. (3.0 to 12.6 mm) B

0.120 to 0.510-in. (3.0 to 13.0 mm) B

0.134 to 0.481-in. (3.4 to 12.2 mm) A

0.134 to 0.392-in. (3.4 to 9.9 mm) A

0.250 to 0.499-in. (6.4 to 12.6 mm) B

0.250 to 1.239-in. (6.4 to 31.4 mm) B

0.250 to 1.065-in. (6.4 to 27.1 mm) A

0.250 to 1.097-in. (6.4 to 27.9 mm) B

I.D.

Range

Code

A-17

Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

A-18

Reference Manual

00809-0100-4028, Rev AA October 2005

Appendix B Approvals

Hazardous Locations Installations . . . . . . . . . . . . . . . . . . page B-1

Rosemount 2024 Product Certifications . . . . . . . . . . . . . page B-1

Rosemount 285

HAZARDOUS LOCATIONS INSTALLATIONS

ROSEMOUNT 2024 PRODUCT CERTIFICATIONS

Approved Manufacturing Locations

European Directive Information

The flowmeter is designed with explosion-proof housings and circuitry suitable for intrinsically safe and non-incendive operation. Each flowmeter is clearly marked with a tag indicating the approvals. To maintain certified ratings for installed transmitters, install in accordance with all applicable installation codes and approval drawings. Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications. Both transmitter covers must be fully engaged to meet explosion proof requirements.

Rosemount Inc. — Chanhassen, Minnesota USA Fisher-Rosemount GmbH & Co. — Wessling, Germany Emerson Process Management Asia Pacific

Private Limited — Singapore Beijing Rosemount Far East Instrument Co., LTD — Beijing, China

The EC declaration of conformity for all applicable European directives for this product can be found on the Rosemount website at www.rosemount.com. A hard copy may be obtained by contacting our local sales office.

ATEX Directive (94/9/EC)

Emerson Process Management complies with the ATEX Directive.

www.rosemount.com

Ordinary Location Certification for Factory Mutual

As standard, the transmitter has been examined and tested to determine that the design meets basic electrical, mechanical, and fire protection requirements by FM, a nationally recognized testing laboratory (NRTL) as accredited by the Federal Occupational Safety and Health Administration (OSHA).

Rosemount 285

Reference Manual

00809-0100-4028, Rev AA

October 2005

Hazardous Locations Certifications

North American Certifications

Factory Mutual (FM) Approvals

E5 Explosion Proof for Class I, Division 1, Groups B, C, and D; Dust-Ignition

Proof for Class II, Division 1, Groups E, F, and G. Suitable for Class III, Division 1, indoor and outdoor (NEMA 4X) hazardous locations.

I5 Intrinsically safe for use in Class I, Division 1, Groups A, B, C, and D;

Class II Division 1, Groups E, F, and G; and Class III, Division 1 when connected in accordance with Rosemount drawing 02024-0150. Temp. Code T4. Non-incendive for Class I, Division 2, Groups A, B, C, and D.

K5 Combined E5 and I5. Standard Offering

Canadian Standards Association (CSA) Approvals

C6 Explosion Proof for Class I, Division 1, Groups C and D; Dust-ignition

Proof for Class II, Division 1, Groups E, F, and G; Suitable for Class III, indoor and outdoor hazardous locations, CSA enclosure 4x. Approved for Class I, Division 2, Groups A, B, C, and D.

Intrinsically safe for Class I, Division I, Groups A, B, C, and D when connected in accordance with Rosemount drawing 02024-1064. Temp. Code T3C.

B-2

Annubar Flowmeter Series

Reference Manual

00809-0100-4809, Rev AA

May 2002

Rosemount, the Rosemount logotype, Annubar, and ProBar are registered trademarks of Rosemount Inc. HART is a registered trademark of the HART Communication Foundation.

OUNDATION is a trademark of the Fieldbus Foundation.

F Loctite and PST are registered trademarks of the Loctite Corporation. Hastelloy is a registered trademark of Haynes International. Teflon (PTFE) is a registered trademark of E.I du Pont de Nemours & Co. All other marks are the property of their respective owners.

Emerson Process Management

Rosemount Inc.

8200 Market Boulevard Chanhassen, MN 55317 USA T (U.S.) 1-800-999-9307 T (International) (952) 906-8888 F (952) 949-7001

www.rosemount.com

¢00809-0100-4809g¤

Rosemount The 285 Annubar Primary Element Series Manuals & Guides

Specifications and Main Features

Frequently Asked Questions

User Manual

The 285 Annubar® Primary Element Series

Table of Contents

SECTION 1 Introduction

SECTION 2 Installation

SECTION 3 Commissioning

SECTION 4 Operation and Maintenance

APPENDIX A Reference Data

APPENDIX B Approvals

Section 1 Introduction

USING THIS MANUAL This product manual provides installation, configuration, calibration,

RECEIVING AND INSPECTION

RETURNING THE PRODUCT

CONSIDERATIONS Information in this manual applies to circular pipes and square or rectangular

Section 2 Installation

SAFETY MESSAGES Instructions and procedures in this section may require special precautions to

INSTALLATION FLOWCHART AND CHECKLIST

MOUNTING

INSTALLATION This manual contains the horizontal and vertical installation procedures for the

Section 3 Commissioning

COMMISIONING THE 951 TRANSMITTER

SAFETY MESSAGES Instructions and procedures in this section may require special precautions to

COMMISSIONING ON THE BENCH

Section 4 Operation and Maintenance

SAFETY MESSAGES Procedures and instructions in this section may require special precautions to

TROUBLESHOOTING If a malfunction is suspected despite the absence of a diagnostic messages

DISASSEMBLY

Appendix A Reference Data

ROSEMOUNT 285 ANNUBAR PRIMARY SPECIFICATIONS

Performance Specifications

Functional Specifications

Physical Specifications Annubar Sensor Material

Installation Considerations

OPTIONAL ROSEMOUNT 2024 TRANSMITTER SPECIFICATIONS

Performance Specifications

Functional Specifications

Physical Specifications Process Connections

Calibration Transmitters are factory calibrated to customer's specified range. If calibration

OPTIONAL ROSEMOUNT 951 TRANSMITTER SPECIFICATIONS

Performance Specifications

Functional Specifications

Physical Specifications Process Connections

DIMENSIONAL DRAWINGS

ORDERING INFORMATION

Appendix B Approvals

HAZARDOUS LOCATIONS INSTALLATIONS

ROSEMOUNT 2024 PRODUCT CERTIFICATIONS

Approved Manufacturing Locations

European Directive Information

Hazardous Locations Certifications