Rosemount 8712 Operating Manual

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Reference manual

00809-0100-4445, Rev AA

December 2017

Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Contents

Chapter 1 Safety messages ............................................................................................................ 1

Chapter 2 Introduction .................................................................................................................. 5

2.1 System description ...................................................................................................................... 5

2.2 Product recycling/disposal ...........................................................................................................7

Chapter 3 Sensor Installation ......................................................................................................... 9

3.1 Handling and Lifting Safety ..........................................................................................................9

3.2 Location and Position ................................................................................................................ 10

3.3 Sensor Installation ..................................................................................................................... 12

3.4 Process reference connection ....................................................................................................20

Chapter 4 Remote Transmitter Installation .................................................................................. 25

4.1 Pre-installation .......................................................................................................................... 25

4.2 Transmitter symbols ..................................................................................................................28

4.3 Mounting .................................................................................................................................. 29

4.4 Wiring ....................................................................................................................................... 30

Chapter 5 Basic Configuration ......................................................................................................47

5.1 Basic Setup ................................................................................................................................ 47

5.2 Local operator interface (LOI) .................................................................................................... 48

5.3 Field Communicator interface ................................................................................................... 48

5.4 Measurement units ................................................................................................................... 49

Chapter 6 Advanced installation details ....................................................................................... 51

6.1 Hardware switches .................................................................................................................... 51

6.2 Additional loops ........................................................................................................................ 53

6.3 Coil housing configuration .........................................................................................................64

Chapter 7 Operation .................................................................................................................... 71

7.1 Introduction .............................................................................................................................. 71

7.2 Local operator interface (LOI) .................................................................................................... 71

7.3 Field Communicator interface ................................................................................................... 80

Chapter 8 Advanced Configuration Functionality ......................................................................... 85

8.1 Introduction .............................................................................................................................. 85

8.2 Configure outputs ..................................................................................................................... 85

8.3 Configure HART .......................................................................................................................100

8.4 Configure LOI .......................................................................................................................... 104

8.5 Additional parameters .............................................................................................................105

8.6 Configure special units ............................................................................................................ 106

Chapter 9 Advanced Diagnostics Configuration ..........................................................................109

9.1 Introduction ............................................................................................................................ 109

9.2 Licensing and enabling ............................................................................................................ 110

9.3 Tunable empty pipe detection .................................................................................................111

9.4 Electronics temperature .......................................................................................................... 113

9.5 Ground/wiring fault detection ................................................................................................. 113

9.6 High process noise detection ...................................................................................................114

9.7 Coated electrode detection .....................................................................................................115

9.8 4-20 mA loop verification ........................................................................................................ 117

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Contents

9.9 SMART™ Meter Verification ......................................................................................................118

9.10 Run manual SMART Meter Verification .................................................................................... 121

9.11 Continuous SMART Meter Verification .....................................................................................122

9.12 SMART Meter Verification test results ......................................................................................123

9.13 SMART Meter Verification measurements ............................................................................... 125

9.14 Optimizing the SMART Meter Verification ............................................................................... 127

Chapter 10 Digital Signal Processing ............................................................................................ 131

10.1 Introduction ............................................................................................................................ 131

10.2 Safety messages ......................................................................................................................131

10.3 Process noise profiles .............................................................................................................. 132

10.4 High process noise diagnostic ..................................................................................................133

10.5 Optimizing flow reading in noisy applications ..........................................................................133

10.6 Explanation of signal processing algorithm ..............................................................................136

Chapter 11 Maintenance ..............................................................................................................139

11.1 Introduction ............................................................................................................................ 139

11.2 Safety information ...................................................................................................................139

11.3 Installing a local operator interface (LOI) ................................................................................. 140

11.4 Replacing electronics stack ......................................................................................................141

11.5 Replacing a terminal block socket module ...............................................................................142

11.6 Replacing a terminal block with amp clips ............................................................................... 143

11.7 Trims ....................................................................................................................................... 144

Chapter 12 Troubleshooting ........................................................................................................ 149

12.1 Introduction ............................................................................................................................ 149

12.2 Safety information ...................................................................................................................150

12.3 Installation check and guide .................................................................................................... 150

12.4 Diagnostic messages ...............................................................................................................152

12.5 Basic troubleshooting ..............................................................................................................162

12.6 Sensor troubleshooting ........................................................................................................... 166

12.7 Installed sensor tests ............................................................................................................... 170

12.8 Uninstalled sensor tests ...........................................................................................................172

12.9 Technical support ....................................................................................................................174

12.10 Service .....................................................................................................................................175

Appendices and reference

Appendix A Product Specifications ................................................................................................177

A.1 Rosemount 8700M Flowmeter Platform specifications ........................................................... 177

A.2 Transmitter specifications ....................................................................................................... 182

A.3 8705-M Flanged Sensor Specifications .....................................................................................191

A.4 8711-M/L Wafer Sensor Specifications .....................................................................................196

A.5 8721 Hygienic (Sanitary) Sensor Specifications ........................................................................199

Appendix B Product Certifications ................................................................................................ 205

Appendix C Wiring Diagrams ........................................................................................................207

C.1 Wiring diagrams ...................................................................................................................... 208

C.2 775 Smart Wireless THUM™ Adapter wiring diagrams ..............................................................210

C.3 Field Communicator wiring diagrams ...................................................................................... 212

Appendix D Implementing a Universal Transmitter ....................................................................... 215

D.1 Safety messages ......................................................................................................................215

ii Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Contents

D.2 Universal capability ..................................................................................................................216

D.3 Three step process ...................................................................................................................216

D.4 Wiring the universal transmitter .............................................................................................. 217

D.5 Rosemount sensors ................................................................................................................. 217

D.6 Brooks sensors .........................................................................................................................221

D.7 Endress and Hauser sensors .....................................................................................................223

D.8 Fischer and Porter sensors ....................................................................................................... 224

D.9 Foxboro sensors ...................................................................................................................... 231

D.10 Kent Veriflux VTC sensor ..........................................................................................................235

D.11 Kent sensors ............................................................................................................................237

D.12 Krohne sensors ........................................................................................................................238

D.13 Taylor sensors ..........................................................................................................................239

D.14 Yamatake Honeywell sensors .................................................................................................. 241

D.15 Yokogawa sensors ...................................................................................................................242

D.16 Generic manufacturer sensor to 8712 Transmitter .................................................................. 244

Reference manual iii

Contents

iv Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

1 Safety messages

WARNING!

General hazards. Failure to follow these instructions could result in death or serious injury.

• 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.

• Installation and servicing instructions are for use by qualified personnel only. Do not

perform any servicing other than that contained in the operating instructions, unless qualified.

• Verify the installation is completed safely and is consistent with the operating

environment.

• Do not substitute factory components with non-factory compenents. Substitution of

components may impair Intrinsic Safety.

• Do not perform any services other than those contained in this manual.

• Process leaks may result in death or serious injury.

• Mishandling products exposed to a hazardous substance may result in death or serious

injury.

• The electrode compartment may contain line pressure; it must be depressurized before

the cover is removed.

• If the product being returned was exposed to a hazardous substance as defined by

OSHA, a copy of the required Material Safety Data Sheet (MSDS) for each hazardous substance identified must be included with the returned goods.

• The products described in this document are NOT designed for nuclear-qualified

applications. Using non-nuclear qualified products in applications that require nuclearqualified hardware or products may cause inaccurate readings. For information on Rosemount nuclear-qualified products, contact your local Emerson Process Management Sales Representative.

Safety messages

Reference manual 1

Safety messages

WARNING!

Explosion hazards. Failure to follow these instructions could cause an explosion, resulting in death or serious injury.

• If installed in explosive atmospheres [hazardous areas, classified areas, or an “Ex”

environment], it must be assured that the device certification and installation techniques are suitable for that particular environment.

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

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

• Do not disconnect equipment when a flammable or combustible atmosphere is present.

• Before connecting a HART-based communicator in an explosive atmosphere, make sure

the instruments in the loop are installed in accordance with intrinsically safe or nonincendive field wiring practices.

• Do not connect a Rosemount transmitter to a non-Rosemount sensor that is located in

an explosive atmosphere. The transmitter has not been evaluated for use with other manufacturers' magnetic flowmeter sensors in hazardous (Ex or Classified) areas. Special care should be taken by the end-user and installer to ensure the transmitter meets the safety and performance requirements of the other manufacturer’s equipment.

• Follow national, local, and plant standards to properly earth ground the transmitter and

sensor. The earth ground must be separate from the process reference ground.

• Rosemount Magnetic Flowmeters ordered with non-standard paint options or non-

metallic labels may be subject to electrostatic discharge. To avoid electrostatic charge build-up, do not rub the flowmeter with a dry cloth or clean with solvents.

WARNING!

Electrical hazards. Failure to follow these instructions could cause damaging and unsafe discharge of electricity, resulting in death or serious injury.

• Follow national, local, and plant standards to properly earth ground the transmitter and

sensor. The earth ground must be separate from the process reference ground.

• Disconnect power before servicing circuits.

• Allow ten minutes for charge to dissipate prior to removing electronics compartment

cover. The electronics may store energy in this period immediately after power is removed.

• Avoid contact with leads and terminals. High voltage that may be present on leads could

cause electrical shock.

• Rosemount Magnetic Flowmeters ordered with non-standard paint options or non-

metallic labels may be subject to electrostatic discharge. To avoid electrostatic charge build-up, do not rub the flowmeter with a dry cloth or clean with solvents.

2 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Safety messages

NOTICE

Damage hazards. Failure to follow these instructions could resulting damage or destruction of equipment.

• The sensor liner is vulnerable to handling damage. Never place anything through the

sensor for the purpose of lifting or gaining leverage. Liner damage may render the sensor inoperable.

• Metallic or spiral-wound gaskets should not be used as they will damage the liner face of

the sensor. If spiral wound or metallic gaskets are required for the application, lining protectors must be used. If frequent removal is anticipated, take precautions to protect the liner ends. Short spool pieces attached to the sensor ends are often used for protection.

• Correct flange bolt tightening is crucial for proper sensor operation and life. All bolts

must be tightened in the proper sequence to the specified torque specifications. Failure to observe these instructions could result in severe damage to the sensor lining and possible sensor replacement.

• In cases where high voltage/high current are present near the meter installation, ensure

proper protection methods are followed to prevent stray electricity from passing through the meter. Failure to adequately protect the meter could result in damage to the transmitter and lead to meter failure.

• Completely remove all electrical connections from both sensor and transmitter prior to

welding on the pipe. For maximum protection of the sensor, consider removing it from the pipeline.

• Do not connect mains or line power to the magnetic flowtube sensor or to the

transmitter coil excitation circuit.

Reference manual 3

Safety messages

4 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

2 Introduction

Topics covered in this chapter:

System description

•

Product recycling/disposal

•

2.1 System description

The 8700M Magnetic Flowmeter Platform consists of a sensor and a transmitter. The sensor is installed in-line with the process piping; the transmitter is remotely mounted to the sensor.

Wall mount transmitterFigure 2-1:

Introduction

There are three Rosemount® flow sensors available.

8705 flanged sensorFigure 2-2:

(1) Also available for use with 8707 High Signal sensor with dual calibration (option code D2).

(1)

Reference manual 5

Introduction

8711 wafer sensorFigure 2-3:

8721 hygienic sensorFigure 2-4:

The flow sensor contains two magnetic coils located on opposite sides of the sensor. Two electrodes, located perpendicular to the coils and opposite each other, make contact with the liquid. The transmitter energizes the coils and creates a magnetic field. A conductive liquid moving through the magnetic field generates an induced voltage at the electrodes. This voltage is proportional to the flow velocity. The transmitter converts the voltage detected by the electrodes into a flow reading. A cross-sectional view is show in Figure 2-5.

8705 Cross SectionFigure 2-5:

6 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

2.2 Product recycling/disposal

Recycling of equipment and packaging should be taken into consideration and disposed of in accordance with local and national legislation/regulations.

Introduction

Reference manual 7

Introduction

8 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

3 Sensor Installation

Topics covered in this chapter:

Handling and Lifting Safety

•

Location and Position

•

Sensor Installation

•

Process reference connection

•

This chapter provides instructions for handling and installing the flow sensor with a remotely mounted transmitter.

Related information

Remote Transmitter Installation

Sensor Installation

3.1 Handling and Lifting Safety

CAUTION!

To reduce the risk of personal injury or damage to equipment, follow all lifting and handling instructions.

• Handle all parts carefully to prevent damage. Whenever possible, transport the system

to the installation site in the original shipping container.

• PTFE-lined sensors are shipped with end covers that protect it from both mechanical

damage and normal unrestrained distortion. Remove the end covers just before installation.

• Keep the shipping plugs in the conduit ports until you are ready to connect and seal

them. Appropriate care should be taken to prevent water ingress.

• The sensor should be supported by the pipeline. Pipe supports are recommended on

both the inlet and outlet sides of the sensor pipeline. There should be no additional support attached to the sensor.

• Use proper PPE (Personal Protection Equipment) including safety glasses and steel toed

shoes.

• Do not lift the meter by holding the electronics housing or junction box.

• The sensor liner is vulnerable to handling damage. Never place anything through the

sensor for the purpose of lifting or gaining leverage. Liner damage can render the sensor useless.

• Do not drop the device from any height.

Reference manual 9

Sensor Installation

3.2 Location and Position

3.2.1 Environmental considerations

To ensure maximum transmitter life, avoid extreme temperatures and excessive vibration. Typical problem areas include the following:

• Tropical/desert installations in direct sunlight

• Outdoor installations in arctic climates

Remote mounted transmitters may be installed in the control room to protect the electronics from the harsh environment and to provide easy access for configuration or service.

3.2.2 Upstream and downstream piping

To ensure specified accuracy over widely varying process conditions, install the sensor with a minimum of five straight pipe diameters upstream and two pipe diameters downstream from the electrode plane.

3.2.3

Upstream and downstream straight pipe diametersFigure 3-1:

A. Five pipe diameters (upstream) B. Two pipe diameters (downstream) C. Flow direction

Installations with reduced upstream and downstream straight runs are possible. In reduced straight run installations, the meter may not meet absolute accuracy specifications. Reported flow rates will still be highly repeatable.

Flow direction

The sensor should be mounted so that the arrow points in the direction of flow.

10 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Flow direction arrowFigure 3-2:

3.2.4 Sensor piping location and orientation

The sensor should be installed in a location that ensures it remains full during operation. Depending on where it is installed, orientation must also be considered.

• Vertical installation with upward process fluid flow keeps the cross-sectional area

full, regardless of flow rate.

• Horizontal installation should be restricted to low piping sections that are normally

full.

Sensor Installation

Sensor orientationFigure 3-3:

A. Flow direction

Reference manual 11

Sensor Installation

3.2.5 Electrode orientation

The electrodes in the sensor are properly oriented when the two measurement electrodes are in the 3 and 9 o’clock positions or within 45 degrees from the horizontal, as shown on the left side of Figure 3-4. Avoid any mounting orientation that positions the top of the sensor at 90 degrees from the vertical position as shown on the right of the Electrode Orientation figure.

Electrode orientationFigure 3-4:

A. Correct orientation B. Incorrect orientation

The sensor may require a specific orientation to comply with Hazardous Area T-code rating. Refer to the approrpirate reference manual for any potential restrictions.

3.3

Sensor Installation

3.3.1 Flanged sensors

Gaskets

The sensor requires a gasket at each process connection. The gasket material must be compatible with the process fluid and operating conditions. Gaskets are required on each side of a grounding ring (see Figure 3-5). All other applications (including sensors with lining protectors or a grounding electrode) require only one gasket on each process connection.

12 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Sensor Installation

Note

Metallic or spiral-wound gaskets should not be used as they will damage the liner face of the sensor. If spiral wound or metallic gaskets are required for the application, lining protectors must be used.

Gasket placement for flanged sensorsFigure 3-5:

A. Grounding ring and gasket (optional) B. Customer-supplied gasket

Bolts

Note

Do not bolt one side at a time. Tighten both sides simultaneously. Example:

1. Snug upstream

2. Snug downstream

3. Tighten upstream

4. Tighten downstream

Do not snug and tighten the upstream side and then snug and tighten the downstream side. Failure to alternate between the upstream and downstream flanges when tightening bolts may result in liner damage.

Suggested torque values by sensor line size and liner type are listed in Table 3-2 for ASME B16.5 flanges and Table 3-3 or Table 3-4 for EN flanges. Consult the factory if the flange rating of the sensor is not listed. Tighten flange bolts on the upstream side of the sensor in the incremental sequence shown in Figure 3-6 to 20% of the suggested torque values. Repeat the process on the downstream side of the sensor. For sensors with greater or fewer flange bolts, tighten the bolts in a similar crosswise sequence. Repeat this entire tightening sequence at 40%, 60%, 80%, and 100% of the suggested torque values.

Reference manual 13

Sensor Installation

If leakage occurs at the suggested torque values, the bolts can be tightened in additional 10% increments until the joint stops leaking, or until the measured torque value reaches the maximum torque value of the bolts. Practical consideration for the integrity of the liner often leads to distinct torque values to stop leakage due to the unique combinations of flanges, bolts, gaskets, and sensor liner material.

Check for leaks at the flanges after tightening the bolts. Failure to use the correct tightening methods can result in severe damage. While under pressure, sensor materials may deform over time and require a second tightening 24 hours after the initial installation.

Flange bolt torquing sequenceFigure 3-6:

Prior to installation, identify the lining material of the flow sensor to ensure the suggested torque values are applied.

Lining materialTable 3-1:

Fluoropolymer liners Other liners

T - PTFE P - Polyurethane

F - ETFE N - Neoprene

A - PFA L - Linatex (Natural Rubber)

K - PFA+ D - Adiprene

Suggested flange bolt torque values for Rosemount 8705 (ASME)Table 3-2:

Fluoropolymer liners Other liners

Size Code Line Size

005 0.5-in. (15 mm) 8 8 N/A N /A

010 1-in. (25 mm) 8 12 6 10

015 1.5-in. (40 mm) 13 25 7 18

020 2-in. (50 mm) 19 17 14 11

Class 150 (pound-feet)

Class 300 (pound-feet)

Class 150 (pound-feet)

Class 300 (pound feet)

14 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Sensor Installation

Table 3-2:

(continued)

Size Code Line Size

025 2.5-in. (65 mm) 22 24 17 16

030 3-in. (80 mm) 34 35 23 23

040 4-in. (100 mm) 26 50 17 32

050 5-in. (125 mm) 36 60 25 35

060 6-in. (150 mm) 45 50 30 37

080 8-in. (200 mm) 60 82 42 55

100 10-in. (250 mm) 55 80 40 70

120 12-in. (300 mm) 65 125 55 105

140 14-in. (350 mm) 85 110 70 95

160 16-in. (400 mm) 85 160 65 140

180 18-in. (450 mm) 120 170 95 150

200 20-in. (500 mm) 110 175 90 150

240 24-in. (600 mm) 165 280 140 250

300 30-in. (750 mm) 195 415 165 375

360 36-in. (900 mm) 280 575 245 525

Suggested flange bolt torque values for Rosemount 8705 (ASME)

Fluoropolymer liners Other liners

Class 150 (pound-feet)

Class 300 (pound-feet)

Class 150 (pound-feet)

Class 300 (pound feet)

Table 3-3:

Suggested flange bolt torque values for Rosemount 8705 sensors with

fluoropolymer liners (EN 1092-1)

Size code Line size

005 0.5-in. (15 mm) N/A N/A N/A 10

010 1-in. (25 mm) N/A N/A N/A 20

015 1.5-in. (40 mm) N/A N/A N/A 50

020 2-in. (50 mm) N/A N/A N/A 60

025 2.5-in. (65 mm) N/A N/A N/A 50

030 3-in. (80 mm) N/A N/A N/A 50

040 4-in. (100 mm) N/A 50 N/A 70

050 5.0-in. (125 mm) N/A 70 N/A 100

060 6-in. (150mm) N/A 90 N/A 130

080 8-in. (200 mm) 130 90 130 170

100 10-in. (250 mm) 100 130 190 250

120 12-in. (300 mm) 120 170 190 270

Fluoropolymer liners (in Newton-meters)

PN 10 PN 16 PN 25 PN 40

Reference manual 15

Sensor Installation

Table 3-3:

Suggested flange bolt torque values for Rosemount 8705 sensors with

fluoropolymer liners (EN 1092-1) (continued)

Size code Line size

140 14-in. (350 mm) 160 220 320 410

160 16-in. (400 mm) 220 280 410 610

180 18-in. (450 mm) 190 340 330 420

200 20-in. (500 mm) 230 380 440 520

240 24-in. (600 mm) 290 570 590 850

Table 3-4:

Suggested flange bolt torque values for Rosemount 8705 sensors with

Fluoropolymer liners (in Newton-meters)

PN 10 PN 16 PN 25 PN 40

non-fluoropolymer liners (EN 1092-1)

Size Code Line Size

005 0.5-in. (15 mm) N/A N/A N/A 20

010 1-in. (25 mm) N/A N/A N/A 30

015 1.5-in. (40 mm) N/A N/A N/A 40

020 2-in. (50 mm) N/A N/A N/A 30

025 2.5-in. (65 mm) N/A N/A N/A 35

030 3-in. (80 mm) N/A N/A N/A 30

040 4-in. (100 mm) N/A 40 N/A 50

050 5.0-in. (125 mm) N/A 50 N/A 70

060 6-in. (150mm) N/A 60 N/A 90

080 8-in. (200 mm) 90 60 90 110

100 10-in. (250 mm) 70 80 130 170

120 12-in. (300 mm) 80 110 130 180

140 14-in. (350 mm) 110 150 210 288

160 16-in. (400 mm) 150 190 280 410

180 18-in. (450 mm) 130 230 220 280

200 20-in. (500 mm) 150 260 300 350

240 24-in. (600 mm) 200 380 390 560

Non-fluoropolymer liners (in Newton-meters)

PN 10 PN 16 PN 25 PN 40

3.3.2 Wafer sensors

When installing wafer sensors, there are several components that must be included and requirements that must be met.

16 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Wafer sensors installation components and assembly requirementsFigure 3-7:

A. Ground ring (optional) B. Customer supplied gaskets C. Spacer installation (horizontal meters) D. Spacer installation (vertical meters) E. O-ring F. Installation studs, nuts, and washers (optional) G. Wafer alignment spacer H. Flow

Sensor Installation

Gaskets

The sensor requires a gasket at each process connection. The gasket material selected must be compatible with the process fluid and operating conditions. Gaskets are required on each side of a grounding ring. See Figure 3-7.

Note

Metallic or spiral-wound gaskets should not be used as they will damage the liner face of the sensor.

Alignment spacers

On 1.5 inch through 8 inch (40 through 200 mm) line sizes, Rosemount requires installing the alignment spacers to ensure proper centering of the wafer sensor between the process flanges. To order an Alignment Spacer Kit (quantity 3 spacers) use p/n 08711-3211-xxxx where xxxx equals the dash number shown in Table 3-5.

Rosemount alignment spacersTable 3-5:

Line size

Dash-no. (-xxxx)

0A15 1.5 40 JIS 10K-20K

0A20 2 50 JIS 10K-20K

0A30 3 80 JIS 10K

Flange rating(in) (mm)

Reference manual 17

Sensor Installation

Rosemount alignment spacers (continued)Table 3-5:

Line size

Dash-no. (-xxxx)

0B15 1.5 40 JIS 40K

AA15 1.5 40 ASME- 150#

AA20 2 50 ASME - 150#

AA30 3 80 ASME - 150#

AA40 4 100 ASME - 150#

AA60 6 150 ASME - 150#

AA80 8 200 ASME - 150#

AB15 1.5 40 ASME - 300#

AB20 2 50 ASME - 300#

AB30 3 80 ASME - 300#

AB40 4 100 ASME - 300#

AB60 6 150 ASME - 300#

AB80 8 200 ASME - 300#

DB40 4 100 EN 1092-1 - PN10/16

DB60 6 150 EN 1092-1 - PN10/16

DB80 8 200 EN 1092-1 - PN10/16

DC80 8 200 EN 1092-1 - PN25

DD15 1.5 40 EN 1092-1 - PN10/16/25/40

DD20 2 50 EN 1092-1 - PN10/16/25/40

DD30 3 80 EN 1092-1 - PN10/16/25/40

DD40 4 100 EN 1092-1 - PN25/40

DD60 6 150 EN 1092-1 - PN25/40

DD80 8 200 EN 1092-1 - PN40

RA80 8 200 AS40871-PN16

RC20 2 50 AS40871-PN21/35

RC30 3 80 AS40871-PN21/35

RC40 4 100 AS40871-PN21/35

RC60 6 150 AS40871-PN21/35

RC80 8 200 AS40871-PN21/35

Flange rating(in) (mm)

Studs

Wafer sensors require threaded studs. See Figure 3-8 for torque sequence. Always check for leaks at the flanges after tightening the flange bolts. All sensors require a second tightening 24 hours after initial flange bolt tightening.

18 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Sensor Installation

Stud specificationsTable 3-6:

Nominal sensor size Stud specifications

0.15–1-in. (4–25 mm) 316 SST ASTM A193, Grade B8M, Class 1 threaded mounted studs

1½–8-in. (40–200 mm) CS, ASTM A193, Grade B7, threaded mounting

studs

Flange bolt torquing sequenceFigure 3-8:

Installation

1. Insert studs for the the bottom side of the sensor between the pipe flanges and center the alignment spacer in the middle of the stud. See Figure 3-7 for the bolt hole locations recommended for the spacers provided. Stud specifications are listed in Table 3-6.

2. Place the sensor between the flanges. Make sure the alignment spacers are properly centered on the studs. For vertical flow installations slide the o-ring over the stud to keep the spacer in place. See Figure 3-7. Ensure the spacers match the flange size and class rating for the process flanges. See Table 3-5.

3. Insert the remaining studs, washers, and nuts.

4. Tighten to the torque specifications shown in Table 3-7. Do not over-tighten the bolts or the liner may be damaged.

Rosemount 8711 torque specificationsTable 3-7:

Size code Line size Pound-feet Newton-meter

015 1.5-in. (40 mm) 15 20

020 2-in. (50 mm) 25 34

030 3-in. (80 mm) 40 54

040 4-in. (100 mm) 30 41

060 6-in. (150 mm) 50 68

Reference manual 19

Sensor Installation

Rosemount 8711 torque specifications (continued)Table 3-7:

Size code Line size Pound-feet Newton-meter

080 8-in. (200 mm) 70 95

3.3.3 Sanitary senors

Gaskets

The sensor requires a gasket at each of its connections to adjacent devices or piping. The gasket material selected must be compatible with the process fluid and operating conditions.

Note

Gaskets are supplied between the IDF fitting and the process connection fitting, such as a Tri-Clamp fitting, on all Rosemount 8721 Sanitary sensors except when the process connection fittings are not supplied and the only connection type is an IDF fitting.

Alignment and bolting

Standard plant practices should be followed when installing a magmeter with sanitary fittings. Unique torque values and bolting techniques are not required.

Sanitary sensor gasket and clamp alignmentFigure 3-9:

A. User supplied clamp B. User supplied gasket

3.4

20 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Process reference connection

The figures shown in this chapter illustrate process reference connections only. Earth safety ground is also required as part of this installation, but is not shown in the figures. Follow national, local, and plant electrical codes for safety ground.

Sensor Installation

Use the Process reference options table to determine which process reference option to follow for proper installation.

Process reference optionsTable 3-8:

Grounding

Type of pipe

Conductive unlined pipe

Conductive lined pipe

Non-conductive pipe

Note

For line sizes 10-inch and larger the ground strap may come attached to the sensor body near the flange. See Figure 3-14.

Figure 3-10:

straps Grounding rings

See Figure 3-10 See Figure 3-11 See Figure 3-13 See Figure 3-11

Insufficient grounding

See Figure 3-11 See Figure 3-10 See Figure 3-11

See Figure 3-12 Not recommen-

Grounding straps in conductive unlined pipe or reference electrode in

Reference electrode

ded

Lining protectors

See Figure 3-12

lined pipe

Reference manual 21

Sensor Installation

Grounding with grounding rings or lining protectors in conductive pipeFigure 3-11:

A. Grounding rings or lining protectors

Figure 3-12:

Grounding with grounding rings or lining protectors in non-conductive pipe

A. Grounding rings or lining protectors

22 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Sensor Installation

Grounding with reference electrode in conductive unlined pipeFigure 3-13:

Grounding for line sizes 10-in. and largerFigure 3-14:

Reference manual 23

Sensor Installation

24 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Remote Transmitter Installation

4 Remote Transmitter Installation

Topics covered in this chapter:

Pre-installation

•

Transmitter symbols

•

Mounting

•

Wiring

•

This chapter provides instructions for installing and wiring a remotely mounted transmitter.

Related information

Sensor Installation

4.1 Pre-installation

Before installing the transmitter, there are several pre-installation steps that should be completed to make the installation process easier:

• Identify options and configurations that apply to your application

• Set the hardware switches if necessary

• Consider mechanical, electrical, and environmental requirements

Note

Refer to Appendix A for more detailed requirements.

Identify options and configurations

The typical transmitter installation includes a device power connection, a 4-20mA output connection, and sensor coil and electrode connections. Other applications may require one or more of the following configurations or options:

• Pulse output

• Discrete input/discrete output

• HART multidrop configuration

Hardware switches

The transmitter may have up to four user-selectable hardware switches. These switches set the alarm mode, internal/external analog power, internal/external pulse power, and transmitter security. The standard configuration for these switches when shipped from the factory is as follows:

Reference manual 25

Remote Transmitter Installation

Setting Factory configuration

Alarm mode High

Internal/external analog power Internal

Internal/external pulse power External

Transmitter security Off

The analog power switch and pulse power switches are not available when ordered with intrinsically safe output, ordering code B.

In most cases, it is not necessary to change the setting of the hardware switches. If the switch settings need to be changed, refer to Section 6.1.

Be sure to identify any additional options and configurations that apply to the installation. Keep a list of these options for consideration during the installation and configuration procedures.

Mechanical considerations

Hardware switch default settingsTable 4-1:

The mounting site for the transmitter should provide enough room for secure mounting, easy access to conduit entries, full opening of the transmitter covers, and easy readability of the Local Operator Interface (LOI) screen (if equipped).

26 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Remote Transmitter Installation

Rosemount 8712EM Dimensional DrawingFigure 4-1:

2.81 [71]

9.0

[229]

3.12

11.15 [283]

3.90 [99]

[79]

12.03 [306]

17.68 [449]

1.94 [49]

3.51 [89]

1.70 [43]

1.94 [49]

11.36 [289]

1.59 [40]

7.80

[198]

A. Conduit entry, 1/2-14 NPT (4 places) B. Ground lug C. LOI keypad cover D. Lower cover opens for electrical connections

Note

Dimensions are in inches [Millimeters]

Electrical considerations

Before making any electrical connections to the transmitter, consider national, local, and plant electrical installation requirements. Be sure to have the proper power supply, conduit, and other accessories necessary to comply with these standards.

The transmitter requires external power. Ensure access to a suitable power source.

Reference manual 27

Remote Transmitter Installation

Rosemount 8712EM Flow Transmitter

Power input AC power:

Pulsed circuit Internally powered (Active): Outputs up to

4-20mA output circuit Internally Powered (Active): Outputs up to

Um 250V

Coil excitation output 500mA, 40V max, 9W max

Electrical DataTable 4-2:

90–250VAC, 0.45A, 40VA

Standard DC power:

12–42VDC, 1.2A, 15W

Low power DC:

12–30VDC, 0.25A, 3W

12VDC, 12.1mA, 73mW

Externally powered (Passive): Input up to 28VDC, 100mA, 1W

25mA, 24VDC, 600mW

Externally Powered (Passive): Input up to 25mA, 30VDC, 750mW

4.2

Environmental considerations

To ensure maximum transmitter life, avoid extreme temperatures and excessive vibration. Typical problem areas include the following:

• Tropical or desert installations in direct sunlight

• Outdoor installations in arctic climates

Remote mounted transmitters may be installed in the control room to protect the electronics from the harsh environment and to provide easy access for configuration or service.

Transmitter symbols

Caution symbol — check product documentation for details

Protective conductor (grounding) terminal

28 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

4.3 Mounting

Wall mount transmitters are shipped with mounting hardware for use on a 2-in. pipe or flat surface.

Mounting bracketFigure 4-2:

Remote Transmitter Installation

4.3.1

4.3.2

A. U-bolt B. Saddle clamp C. Fasteners

Pipe mounting

1. Attach the saddle clamp to the pipe using the U-bolt mounting hardware.

2. Attach the transmitter to the saddle clamp assembly with appropriate fasteners.

Surface mounting

Attach the transmitter to the mounting location using customer supplied mounting screws. The installation of the transmitter shall be rated for four (4) times the weight of the transmitter or 44lbs ( 20kgs).

Reference manual 29

Remote Transmitter Installation

4.4 Wiring

4.4.1 Conduit entries and connections

Transmitter conduit entries ports are ½"-14NPT as standard, M20 conduit connections will use an adapter. Conduit connections should be made in accordance with national, local, and plant electrical codes. Unused conduit entries should be sealed with the appropriate certified plugs. The plastic shipping plugs do not provide ingress protection.

4.4.2 Conduit requirements

• For installations with an intrinsically safe electrode circuit, a separate conduit for the

coil cable and the electrode cable may be required. Refer to Appendix B.

• For installations with non-intrinsically safe electrode circuit, or when using the

combination cable, a single dedicated conduit run for the coil drive and electrode cable between the sensor and the remote transmitter may be acceptable. Removal of the barriers for intrinsic safety isolation is permitted for non-intrinsically safe electrode installations.

• Bundled cables from other equipment in a single conduit are likely to create

interference and noise in the system. See Figure 4-3.

• Electrode cables should not be run together in the same cable tray with power

cables.

• Output cables should not be run together with power cables.

• Select conduit size appropriate to feed cables through to the flowmeter.

30 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Remote Transmitter Installation

Best practice conduit preparationFigure 4-3:

4.4.3

A. Safety ground B. Power C. Coil D. Output E. Electrode

C D E

Sensor to transmitter wiring

Wiring details

Cables kits are available as individual component cables or as a combination coil/electrode cable. Remote cables can be ordered directly using the kit numbers shown in Table 4-3,

Table 4-4, and Table 4-5. Equivalent Alpha cable part numbers are also provided as an

alternative. To order cable, specify length as quantity desired. Equal length of component cables is required.

Examples:

• 25 feet = Qty (25) 08732-0065-0001

• 25 meters = Qty (25) 08732-0065-0002

Component cable kits - standard temperature (-20°C to 75°C)Table 4-3:

Cable kit # Description Individual cable Alpha p/n

08732-0065-0001 (feet)

Kit, component cables, Std temp (includes Coil and Electrode)

Coil

Electrode

2442C

2413C

Reference manual 31

Remote Transmitter Installation

Cable kit # Description Individual cable Alpha p/n

08732-0065-0002 (meters)

08732-0065-0003 (feet)

08732-0065-0004 (meters)

Cable kit # Description Individual cable Alpha p/n

08732-0065-1001 (feet)

08732-0065-1002 (meters)

08732-0065-1003 (feet)

08732-0065-1004 (meters)

Component cable kits - standard temperature (-20°C to 75°C) (continued)Table 4-3:

Kit, component cables, Std temp (includes Coil and Electrode)

Kit, component cables, Std temp (includes Coil and I.S. Electrode)

Coil

Electrode

Coil

Instrinsically Safe Blue Electrode

Coil

Instrinsically Safe Blue Electrode

2442C

2413C

2442C

Not available

2442C

Not available

Component cable kits - extended temperature (-50°C to 125°C)Table 4-4:

Kit, Component Cables, Ext Temp. (includes Coil and Electrode)

Kit, Component Cables, Ext Temp. (includes Coil and I.S. Electrode)

Coil

Electrode

Coil

Electrode

Coil

Intrinsically Safe Blue Electrode

Coil

Intrinsically Safe Blue Electrode

Not available

Combination cable kits - coil and electrode cable (-20°C to 80°C)Table 4-5:

Cable kit # Description

08732-0065-2001 (feet) Kit, Combination Cable, Standard

08732-0065-2002 (meters)

08732-0065-3001 (feet) Kit, Combination Cable, Submersible

08732-0065-3002 (meters)

(80°C dry/60°C Wet)

(33ft Continuous)

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Remote Transmitter Installation

Cable requirements

Shielded twisted pairs or triads must be used. For installations using the individual coil drive and electrode cable, see Figure 4-4. Cable lengths should be limited to less than 500 feet (152 m). Consult factory for length between 500–1000 feet (152–304 m). Equal length cable is required for each. For installations using the combination coil drive/ electrode cable, see Figure 4-5. Combination cable lengths should be limited to less than 330 feet (100 m).

Individual component cablesFigure 4-4:

A B

1 2

A. Coil drive B. Electrode C. Twisted, stranded, insulated 14 AWG conductors D. Drain E. Overlapping foil shield F. Outer jacket G. Twisted, stranded, insulated 20 AWG conductors

• 1 = Red

• 2 = Blue

• 3 = Drain

• 17 = Black

• 18 = Yellow

• 19 = White

17 18 19

Reference manual 33

Remote Transmitter Installation

Combination coil and electrode cableFigure 4-5:

A. Electrode shield drain B. Overlapping foil shield C. Outer jacket

• 1 = Red

• 2 = Blue

• 3 = Drain

• 17 = Reference

• 18 = Yellow

• 19 = White

Cable preparation

Prepare the ends of the coil drive and electrode cables as shown in Figure 4-6. Remove only enough insulation so that the exposed conductor fits completely under the terminal connection. Best practice is to limit the unshielded length (D) of each conductor to less than one inch. Excessive removal of insulation may result in an unwanted electrical short to the transmitter housing or other terminal connections. Excessive unshielded length, or failure to connect cable shields properly, may also expose the unit to electrical noise, resulting in an unstable meter reading.

34 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Remote Transmitter Installation

Cable endsFigure 4-6:

A. Coil B. Electrode C. Combination D. Unshielded length

WARNING!

Shock hazard! Potential shock hazard across remote junction box terminals 1 and 2 (40V).

WARNING!

Explosion hazard! Electrodes exposed to process. Use only compatible transmitter and approved installation practices. For process temperatures greater than 284°F (140°C), use a wire rated for 257°F (125°C).

Reference manual 35

Remote Transmitter Installation

Remote junction box terminal blocks

Remote junction box viewsFigure 4-7:

A. Sensor B. Transmitter

Sensor/transmitter wiringTable 4-6:

Wire color Sensor terminal Transmitter terminal

Red 1 1

Blue 2 2

Shield 3 or Float 3

Black 17 17

Yellow 18 18

White 19 19

Note

For hazardous locations, refer to Appendix B.

36 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

4.4.4 Wiring diagrams

Wiring 8712EM using component cableFigure 4-8:

Remote Transmitter Installation

Reference manual 37

Remote Transmitter Installation

Wiring 8712EM using combination cableFigure 4-9:

38 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

4.4.5 Power and I/O terminal blocks

Open the bottom cover of the transmitter to access the terminal block.

Note

To connect pulse output and/or discrete input/output, refer to Chapter 6, and for installations with intrinsically safe outputs, refer to Appendix B.

8712EM Terminal blocksFigure 4-10:

N 1 2 9 10 5 6 19 18

L1 3 11 12 7 8 17

Remote Transmitter Installation

8712EM Power and I/O terminalsTable 4-7:

Terminal number AC version DC version

1 Coil Positive Coil Positive

2 Coil Negative Coil Negative

3 Coil Shield Coil Shield

5 + Pulse + Pulse

6 – Pulse – Pulse

(1)

(2)

17 Electrode Reference Electrode Reference

18 Electrode Negative Electrode Negative

19 Electrode Positive Electrode Positive

N AC (Neutral)/L2 DC (–)

L1 AC L1 DC (+)

(1) Note Polarity: Internally Powered, Terminal 7 (–) Analog HART, Terminal 8 (+) Analog HART. Externally

Powered, Terminal 7 (+) Analog HART, Terminal 8 (–) Analog HART

(2) Only available with ordering code AX.

Analog HART Analog HART

+ Discrete In/Out 2 + Discrete In/Out 2

– Discrete In/Out 2 – Discrete In/Out 2

+ Discrete In/Out 1 + Discrete In/Out 1

– Discrete In/Out 1 – Discrete In/Out 1

Reference manual 39

Remote Transmitter Installation

4.4.6 Powering the transmitter

The transmitter is available in three models. The AC powered transmitter is designed to be powered by 90–250VAC (50/60Hz). The DC powered transmitter is designed to be powered by 12–42VDC. The low power transmitter is designed to be powered by 12–30VDC. Before connecting power to the transmitter, be sure to have the proper power supply, conduit, and other accessories. Wire the transmitter according to national, local, and plant electrical requirements for the supply voltage.

If installing in a hazardous location, verify that the meter has the appropriate hazardous area approval. Each meter has a hazardous area approval tag attached to the side of the transmitter housing.

AC power supply requirements

Units powered by 90 - 250VAC have the following power requirements. Peak inrush is

35.7A at 250VAC supply, lasting approximately 1ms. Inrush for other supply voltages can

be estimated with: Inrush (Amps) = Supply (Volts) / 7.0

AC current requirementsFigure 4-11:

0.24

0.22

0.20

0.18

0.16

0.14

0.12 90

110 130 150 170B190 210 230 250

A. Supply current (amps) B. Power supply (VAC)

40 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Remote Transmitter Installation

Apparent powerFigure 4-12:

22 20

110 130 150 170B190 210 230 250

A. Apparent power (VA) B. Power supply (VAC)

DC power supply requirements

Standard DC units powered by 12VDC power supply may draw up to 1.2A of current steady state. Low power DC units may draw up to 0.25A of current steady state. Peak inrush is 42A at 42VDC supply, lasting approximately 1ms. Inrush for other supply voltages can be estimated with: Inrush (Amps) = Supply (Volts) / 1.0

DC current requirementsFigure 4-13:

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2 12

A. Supply current (amps) B. Power supply (VDC)

17 22 27

32 37 42

Reference manual 41

Remote Transmitter Installation

0.25

0.2

0.15

0.1

0.05

A. Supply current (amps) B. Power supply (VDC)

Supply wire requirements

Use 10–18 AWG wire rated for the proper temperature of the application. For wire 10–14 AWG use lugs or other appropriate connectors. For connections in ambient temperatures above 122 °F (50 °C), use a wire rated for 194 °F (90 °C). For DC powered transmitters with extended cable lengths, verify that there is a minimum of 12VDC at the terminals of the transmitter with the device under load.

Low power DC current requirementsFigure 4-14:

15 20 25

Electrical disconnect requirements

Connect the device through an external disconnect or circuit breaker per national and local electrical code.

Installation category

The installation category for the transmitter is OVERVOLTAGE CAT II.

Overcurrent protection

The transmitter requires overcurrent protection of the supply lines. Fuse rating and compatible fuses are shown in Table 4-8.

Fuse requirementsTable 4-8:

Power system Power supply Fuse rating Manufacturer

AC power 90–250VAC 2 Amp quick acting Bussman AGC2 or

equivalent

DC power 12–42VDC 3 Amp quick acting Bussman AGC3 or

equivalent

DC low power 12–30VDC 3 Amp quick acting Bussman AGC3 or

equivalent

42 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Remote Transmitter Installation

Power terminals

For AC powered transmitter (90–250VAC, 50/60 Hz):

• Connect AC Neutral to Terminal N and AC Line to Terminal L1.

For DC powered transmitter:

• Connect negative to Terminal N and positive to Terminal L1.

• DC powered units may draw up to 1.2A.

Covers

Use the transmitter lower door screw to secure the terminal compartment after the instrument has been wired and powered up. Follow these steps to ensure the housing is properly sealed to meet ingress protection requirements:

1. Ensure all wiring is complete and close the lower door.

2. Tighten the lower door screw until the lower door is tight against the housing. Metal to metal contact of the screw bosses is required to ensure a proper seal.

Note

Application of excessive torque may strip the threads or break the screw.

4.4.7

3. Verify the lower door is secure.

Analog output

The analog output signal is a 4-20mA current loop. Depending on the IS output option, the loop can be powered internally or externally via a hardware switch located on the front of the electronics stack. The switch is set to internal power when shipped from the factory. Intrinsically safe analog output requires a shielded twisted pair cable. For HART communication, a minimum resistance of 250 ohms is required. It is recommended to use individually shielded twisted pair cable. The minimum conductor size is 24 AWG (0.51mm) diameter for cable runs less than 5,000 feet (1,500m) and 20 AWG (0.81mm) diameter for longer distances.

Note

For more information about the analog output characteristics, see Section A.2.3.

Reference manual 43

Remote Transmitter Installation

Internal Power

Analog output wiring, internal powerFigure 4-15:

A B

A. 4–20 mA (–) to Terminal #7 B. 4–20 mA (+) to Terminal #8

Note

Terminal polarity for the analog output is reversed between internally and externally powered.

44 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

External power

Analog output wiring, external powerFigure 4-16:

Remote Transmitter Installation

A. Power supply

• (+) to Terminal #7

• (–) to Terminal #8

Note

Terminal polarity for the analog output is reversed between internally and externally powered.

Reference manual 45

Remote Transmitter Installation

A. Load (ohms) B. Power supply (volts) C. Operating region

• R

• Vps = power supply voltage (volts)

• Rmax = maximum loop resistance (ohms)

Analog loop load limitationsFigure 4-17:

600

= 31.25 (Vps–10.8)

max

10.8 30

46 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

5 Basic Configuration

Topics covered in this chapter:

Basic Setup

•

Local operator interface (LOI)

•

Field Communicator interface

•

Measurement units

•

Once the magnetic flowmeter is installed and power has been supplied, the transmitter must be configured through the basic setup. These parameters can be configured through either an LOI or a HART communication device. Configuration settings are saved in nonvolatile memory within the transmitter. Descriptions of more advanced functions are included in Chapter 8.

Basic Configuration

5.1 Basic Setup

Tag

Tag is the quickest and shortest way of identifying and distinguishing between transmitters. Transmitters can be tagged according to the requirements of your application. The tag may be up to eight characters long as standard, or 32 characters long when ordered with HART 7.

Flow units (PV)

The flow units variable specifies the format in which the flow rate will be displayed. Units should be selected to meet your particular metering needs. .

Line size

The line size (sensor size) must be set to match the actual sensor connected to the transmitter. The size must be specified in inches.

Upper range value (URV)

The URV sets the 20 mA point for the analog output. This value is typically set to full-scale flow. The units that appear will be the same as those selected under the flow units parameter. The URV may be set between –39.3 ft/s to 39.3 ft/s (–12 m/s to 12m/s). There must be at least 1 ft/s (0.3 m/s) span between the URV and LRV.

Lower range value (LRV)

The LRV sets the 4 mA point for the analog output. This value is typically set to zero flow. The units that appear will be the same as those selected under the flow units parameter. The LRV may be set between –39.3 ft/s to 39.3 ft/s (–12 m/s to 12m/s). There must be at least 1 ft/s (0.3 m/s) span between the URV and LRV.

Reference manual 47

Basic Configuration

Calibration number

The sensor calibration number is a 16-digit number generated at the factory during flow calibration, is unique to each sensor, and is located on the sensor tag.

5.2 Local operator interface (LOI)

To access the transmitter menu, press the XMTR MENU key. Use the UP, DOWN, LEFT(E), and RIGHT arrows to navigate the menu structure.

The display can be locked to prevent unintentional configuration changes. The display lock can be activated through a HART communication device, or by holding the UP arrow for three seconds and then following the on-screen instructions.

When the display lock is activated, a lock symbol will appear in the lower right hand corner of the display. To deactivate the display lock, hold the UP arrow for three seconds and follow the on-screen instructions. Once deactivated, the lock symbol will no longer appear in the lower right hand corner of the display.

5.3 Field Communicator interface

Use the menu paths to configure basic setup of the transmitter using a field communicator.

Basic setup menu pathsTable 5-1:

Function Menu path

Basic Setup Configure > Manual Setup > Basic Setup

Flow Units Configure > Manual Setup > Basic Setup > Flow Units

PV Upper Range Value (URV) Configure > Manual Setup > Basic Setup > AO > URV

PV Lower Range Value (LRV) Configure > Manual Setup > Basic Setup > AO > LRV

Calibration Number Configure > Manual Setup > Basic Setup > Setup > Calibration

number

Line Size Configure > Manual Setup > Basic Setup > Setup > Line Size

Tag Configure > Manual Setup > Device Info > Identification > Tag

Long Tag Configure > Manual Setup > Device Info > Identification > Long

Tag

Overview Overview

48 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

5.4 Measurement units

Volumetric flow unitsTable 5-2:

gal/sec gal/min gal/hr gal/day

L/sec L/min L/hr L/day

ft3/sec ft3/min ft3/hr ft3/day

cm3/min

m3/sec m3/min m3/hr m3/day

Impgal/sec Impgal/min Impgal/hr Impgal/day

B31/sec (1 barrel = 31 gallons)

B42/sec (1 barrel = 42 gallons)

Mass flow unitsTable 5-3:

B31/min (1 barrel = 31 gallons)

B42/min (1 barrel = 42 gallons)

B31/hr (1 barrel = 31 gallons)

B42/hr (1 barrel = 42 gallons)

Basic Configuration

B31/day (1 barrel = 31 gallons)

B42/day (1 barrel = 42 gallons)

lbs/sec lbs/min lbs/hr lbs/day

kg/sec kg/min kg/hr kg/day

(s) tons/min (s) tons/hr (s) tons/day

(m) tons/min (m) tons/hr (m) tons/day

Velocity unitsTable 5-4:

ft/sec m/sec

Reference manual 49

Basic Configuration

50 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

6 Advanced installation details

Topics covered in this chapter:

Hardware switches

•

Additional loops

•

Coil housing configuration

•

6.1 Hardware switches

The electronics are equipped with four user-selectable hardware switches. These switches set the Alarm Mode, Internal/External Analog Power, Transmitter Security, and Internal/ External Pulse Power.

Definitions of these switches and their functions are provided below. To change the settings, see below.

Advanced installation details

6.1.1 Alarm mode

If an event occurs that would trigger an alarm in the electronics, the analog output will be driven high or low, depending on the switch position. The switch is set in the HIGH position when shipped from the factory. Refer to Table 8-1 and Table 8-2 for analog output values of the alarm.

6.1.2

6.1.3

Transmitter security

The SECURITY switch allows the user to lock out any configuration changes attempted on the transmitter.

• When the security switch is in the ON position, the configuration can be viewed but

no changes can be made.

• When the security switch is in the OFF position, the configuration can be viewed and

changes can be made.

The switch is in the OFF position when the transmitter is shipped from the factory.

Note

The flow rate indication and totalizer functions remain active when the SECURITY switch is in either position.

Internal/external analog power

The 4–20 mA loop can be powered internally by the transmitter or externally by an external power supply. The ANALOG switch determines the source of the 4–20 mA loop power.

Reference manual 51

Advanced installation details

• When the switch is in the INTERNAL position, the 4–20 mA loop is powered

internally by the transmitter.

• When the switch is in the EXTERNAL position, a 10-30 VDC external power supply is

required. For more information about 4–20 mA external power, see Section 4.4.7.

The switch is in the INTERNAL position when the transmitter is shipped from the factory.

Note

External power is required for multidrop configurations.

6.1.4 Internal/external pulse power

The pulse loop can be powered internally by the transmitter or externally or by an external power supply. The PULSE switch determines the source of the pulse loop power.

• When the switch is in the INTERNAL position, the pulse loop is powered internally by

the transmitter.

• When the switch is in the EXTERNAL position, a 5–28 VDC external supply is

required. For more information about pulse external power, see Section 6.2.1.

The switch is in the EXTERNAL position when the transmitter is shipped from the factory.

6.1.5 Changing hardware switch settings

Note

The hardware switches are located on the top side of the electronics board and changing their settings requires opening the electronics housing. If possible, carry out these procedures away from the plant environment in order to protect the electronics.

52 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Advanced installation details

Rosemount 8712EM Electronics Stack and Hardware SwitchesFigure 6-1:

6.2

Procedure

1. Place the control loop into manual control.

2. Disconnect power to the transmitter

3. Open the electronics compartment cover.

4. Identify the location of each switch (see Figure 6-1 ).

5. Change the setting of the desired switches with a small, non-metallic tool.

6. Close the electronics compartment cover. See Section 4.4.6 for details on the covers.

7. Return power to the transmitter and verify the flow measurement is correct.

8. Return the control loop to automatic control.

Additional loops

There are three additional loop connections available on the Transmitter:

• Pulse output - used for external or remote totalization.

• Channel 1 can be configured as discrete input or discrete output.

• Channel 2 can be configured as discrete output only.

Reference manual 53

Advanced installation details

6.2.1 Connect pulse output

The pulse output function provides a galvanically isolated frequency signal that is proportional to the flow through the sensor. The signal is typically used in conjunction with an external totalizer or control system. The default position of the internal/external pulse power switch is in the EXTERNAL position. The user-selectable power switch is located on the electronics board.

External

For transmitters with the internal/external pulse power switch (output option code A) set in the EXTERNAL position or transmitters with intrinsically safe outputs (output option code B) the following requirements apply:

• Supply voltage: 5 to 28 VDC

• Maximum current: 100 mA

• Maximum power: 1.0 W

• Load resistance: 200 to 10k Ohms (typical value 1k Ohms). Refer to the figure

indicated:

Output option code

A 5-28 VDC See Figure 6-2

B 5 VDC See Figure 6-3

B 12 VDC See Figure 6-4

B 24 VDC See Figure 6-5

• Pulse mode: Fixed pulse width or 50% duty cycle

• Pulse duration: 0.1 to 650 ms (adjustable)

• Maximum pulse frequency:

- Output option code A is 10,000 Hz

- Output option code B is 5000 Hz

• FET switch closure: solid state switch

Supply voltage Resistance vs cable length

54 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Advanced installation details

Output Option Code A—Maximum Frequency vs. Cable LengthFigure 6-2:

A. Frequency (Hz) B. Cable length (feet)

Reference manual 55

Advanced installation details

A. Resistance (Ω) B. Cable length (feet)

Output Option Code B—VDC SupplyFigure 6-3:

At 5000 Hz operation with a 5 VDC supply, pull-up resistances of 200 to 1000 Ohms allow cable lengths up to 660 ft (200 m).

56 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Output Option Code B—2 VDC SupplyFigure 6-4:

A. Resistance (Ω) B. Cable length (feet)

Advanced installation details

At 5000 Hz operation with a 12 VDC supply, pull-up resistances of 500 to 2500 Ohms allow cable lengths up to 660 ft (200 m). Resistances from 500 to 1000 Ohms allow a cable length of 1000 ft (330 m).

Reference manual 57

Advanced installation details

A. Resistance (Ω) B. Cable length (feet)

Output Option Code B—24 VDC SupplyFigure 6-5:

At 5000 Hz operation with a 24 VDC supply, pull-up resistances of 1000 to 10,000 Ohms allow cable lengths up to 660 ft (200 m). Resistances from 1000 to 2500 Ohms allow a cable length of 1000 ft (330 m).

58 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Connecting an external power supply

Advanced installation details

Figure 6-6:

Connecting an Electromechanical Totalizer/Counter with External Power Supply

+ +

A. Schematic showing FET between terminal 5 and 6 B. Electro-mechanical counter C. 5–24 VDC power supply

Note

Total loop impedance must be sufficient to keep loop current below maximum rating. A resistor can be added in the loop to raise impedance.

Reference manual 59

Advanced installation details

Figure 6-7:

Connecting to an Electronic Totalizer/Counter with External Power Supply

A. Schematic showing FET between terminal 5 and 6 B. Electronic counter C. 5–24 VDC power supply

Note

Total loop impedance must be sufficient to keep loop current below maximum rating.

Procedure

1. Ensure the power source and connecting cable meet the requirements outlined previously.

2. Turn off the transmitter and pulse output power sources.

3. Run the power cable to the transmitter.

4. Connect - DC to terminal 6.

5. Connect + DC to terminal 5.

Internal

When the pulse switch is set to internal, the pulse loop will be powered from the transmitter. Supply voltage from the transmitter can be up to 12 VDC. Refer to Figure 6-8 and connect the transmitter directly to the counter. Internal pulse power can only be used with an electronic totalizer or counter and cannot be used with an electromechanical counter.

60 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Advanced installation details

Figure 6-8:

A. Schematic showing FET between terminal 5 and 6 B. Electronic counter

Connecting to an Electronic Totalizer/Counter with Internal Power Supply

6.2.2

Procedure

1. Turn off the transmitter.

2. Connect - DC to terminal 6.

3. Connect + DC to terminal 5.

Connect discrete output

The discrete output control function can be configured to drive an external signal to indicate zero flow, reverse flow, empty pipe, diagnostic status, flow limit, or transmitter status. The following requirements apply:

• Supply Voltage: 5 to 28 VDC

• Maximum Voltage: 28 VDC at 240 mA

• Switch Closure: solid state relay

See Figure 6-9.

Reference manual 61

Advanced installation details

A. Control relay or input B. 5–28 VDC power supply

Connect Discrete Output to Relay or Control System InputFigure 6-9:

6.2.3

Note

Total loop impedance must be sufficient to keep loop current below maximum rating. A resistor can be added in the loop to raise impedance.

For discrete output control, connect the power source and control relay to the transmitter. To connect external power for discrete output control, complete the following steps:

Procedure

1. Ensure the power source and connecting cable meet the requirements outlined previously.

2. Turn off the transmitter and discrete power sources.

3. Run the power cable to the transmitter.

4. Channel 1: Connect -DC to terminal 11, connect +DC to terminal 12.

5. Channel 2: Connect -DC to terminal 9, connect +DC to terminal 10.

Connect discrete input

• For HART version 5.4 firmware, the discrete input can provide positive zero return

(PZR) or net totalizer reset.

• For HART version 5.5 or 7.1 firmware, the discrete input can provide positive zero

return (PZR) or reset totalizer (A, B, C, or all totals).

Note

If a particular totalizer is configured to be not resettable, the totalizer will not be reset with this function.

62 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

The following requirements apply:

Advanced installation details

Supply Voltage

Current

Input Impedance

5 to 28 VDCControl

1.5 - 20mA

2.5 k plus 1.2V Diode drop. See Figure 6-11.

Connecting Discrete InputFigure 6-10:

A. Relay contactor control system output B. 5–28 VDC power supply

Discrete Input Operating RangeFigure 6-11:

2.5

A. Supply voltage B. series resistance Ωin + Ω

7.5 10

12.5 15

(KΩ)

ext

Reference manual 63

Advanced installation details

To connect the discrete input, complete the following steps.

Procedure

1. Ensure the power source and connecting cable meet the requirements outlined previously.

2. Turn off the transmitter and discrete power sources.

3. Run the power cable to the transmitter.

4. Connect -DC to terminal 11.

5. Connect +DC to terminal 12.

6.3 Coil housing configuration

The coil housing provides physical protection of the coils and other internal components from contamination and physical damage that might occur in an industrial environment. The coil housing is an all-welded and gasket-free design.

The 8705 model is available in four coil housing configurations. Configurations are identified by the M0, M1, M2, or M4 options codes found in the model number. The 8711 and 8721 models are only available in one coil housing coil configuration; a separate option code is not available.

6.3.1

Standard coil housing configuration

The standard coil housing configuration is a factory sealed all-welded enclosure and is available for the following models (see Figure 6-12):

• 8705 with option code M0 - 8705xxxxxxxxM0

• 8711 with option code M/L - 8711xxxxxxM/L

• 8721 with option code R/U - 8721xxxxxxR/U

64 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Standard Housing Configuration (8705 Shown)Figure 6-12:

A. Conduit connection B. No relief port (welded shut)

Advanced installation details

6.3.2 Process leak protection (option M1)

The 8705 is available with process leak detection through the use of a threaded connection and pressure relief valve (PRV). This coil housing configuration is a factory sealed all-welded enclosure. The M1 configuration is available for the 8705 only.

• 8705 with option code M1 - 8705xxxxxxxxM1

A PRV can be installed in the threaded connection to prevent possible over-pressuring of the coil housing caused by a primary seal failure. The PRV is capable of venting fugitive emissions when pressure inside the coil housing exceeds five psi. Additional piping may be connected to the PRV to drain any process leakage to a safe location (see Figure 6-13).

In the event of a primary seal failure, this configuration will not protect the coils or other internal components of the sensor from exposure to the process fluid.

Note

The PRV is supplied with the meter to be installed by the customer. Installation of the PRV and any associated piping must be performed in accordance with environmental and hazardous area requirements.

Reference manual 65

Advanced installation details

8705 with M1 Coil Housing Configuration and PRVFigure 6-13:

A. Conduit connection B. M6 threaded pressure relief port with removable cap screw C. Optional: Use relief port to plumb to safe area (supplied by user).

6.3.3 Process leak containment (Option M2 or M4)

The 8705 is available with process leak containment. The coil housing configuration is a factory sealed all-welded enclosure with the addition of sealed electrode compartments. The M2/M4 configuration is available for the 8705 only.

• 8705 with option code M2/M4 - 8705xxxxxxxxM2/M4

This configuration divides the coil housing into separate compartments, one for each electrode and one for the coils. In the event of a primary seal failure, the fluid is contained in the electrode compartment. The sealed electrode compartment prevents the process fluid from entering the coil compartment where it may damage the coils and other internal components. The electrode compartments are designed to contain the process fluid up to a maximum pressure of 740 psig.

• Code M2 - sealed, welded coil housing with separate sealed and welded electrode

compartments (see Figure 6-14).

• Code M4 - sealed, welded coil housing with separate sealed and welded electrode

compartments with a threaded port on the electrode tunnel cap, capable of venting fugitive emissions (see Figure 6-15).

Note

To properly vent process fluid from the electrode compartment to a safe location, additional piping is required and must be installed by the user. Installation of any associated piping must be performed in accordance with environmental and hazardous area requirements. In the event of primary seal failure, the electrode compartment may be pressurized. Use caution when removing the cap screw.

66 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

8705 with M2 Coil Housing ConfigurationFigure 6-14:

A. 2x fused glass seal B. 2x sealed electrode compartment

Advanced installation details

8705 with M4 Coil Housing ConfigurationFigure 6-15:

A B С

A. 2x fused glass seal B. 2x sealed electrode compartment C. M6 threaded pressure relief port with removable cap screw D. Optional: Use relief port to plumb to safe area (supplied by user).

Reference manual 67

Advanced installation details

6.3.4 Process leak containment with electrode access (option M3)

The 8705 is available with Process Leak Containment and Electrode Access. The coil housing configuration is a factory sealed, all-welded enclosure with the addition of sealed electrode compartments that include access covers. The M3 configuration is available on the 8705 only.

• 8705 with option code M3 - 8705xxxxxxxxM3

CAUTION!

A. 2X fused glass seal B. 2X M6 threaded pressure relief port C. Optional: use relief port to plumb to safe area (supplied by user) D. Threaded electrode access cover

68 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Advanced installation details

6.3.5 Higher temperature applications and sensor insulation best practices

Insulation of the magnetic flowmeter sensor is not typically recommended. However, in applications with higher temperature process fluids (above 150°F / 65°C), plant safety, sensor reliability, and sensor longevity can be improved with careful attention to proper insulation.

Procedure

1. In applications where process fluid permeation of the liner has been observed or

may be expected, the rate of permeation can be reduced by decreasing the temperature gradient between the process fluid and the outside of the meter body. In these applications only the space between the process flanges and the coil housing should be insulated (see Figure 6-16).

Insulating a Rosemount Magnetic Flowmeter for PermeationFigure 6-16:

A. Process piping B. Coil housing C. Insulation

2. When insulation of the magnetic flowmeter sensor is required due to plant safety

standards designed to protect personnel from contact burns, extend the insulation up to the coil housing, covering both ends of the sensor and flanges (Figure 6-17).

The insulation should NOT cover the coil housing or the terminal junction box. Insulating the coil housing and the terminal junction box can result in overheating of the coil compartment and terminals, resulting in erratic/erroneous flow readings and potential damage or failure of the meter.

Reference manual 69

Advanced installation details

Figure 6-17:

A. Process piping B. Coil housing C. Insulation

Insulating a Rosemount Magnetic Flowmeter for Safety/Plant Standards

70 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

7 Operation

Topics covered in this chapter:

Introduction

•

Local operator interface (LOI)

•

Field Communicator interface

•

7.1 Introduction

The transmitter features a full range of software functions, transmitter configurations, and diagnostic settings. These features can be accessed through the Local Operator Interface (LOI), a handheld Field Communicator, AMS® Device Manager, ProLink III software, or a host control system. Configuration variables may be changed at any time; specific instructions are provided through on-screen instructions.

This section covers the basic features of the LOI (optional) and provides general instructions on how to navigate the configuration menus using the buttons. The section also covers the use of a Field Communicator and provides menu trees to access each function. For detailed LOI configuration refer to Chapter 8.

Operation

7.2

7.2.1

Local operator interface (LOI)

The optional LOI provides a communications center for the transmitter.

The LOI allows an operator to:

• Change transmitter configuration

• View flow and totalizer values

• Start/stop and reset totalizer values

• Run diagnostics and view the results

• Monitor transmitter status

Basic features

The basic features of the LOI include totalizer control, diagnostics, basic config, and menu navigation. These features provide control of all transmitter functions.

Reference manual 71

Operation

Local Operator Interface and Character DisplayFigure 7-1:

VIEW

TOTAL

SENSOR

CAL NO.

FLOW

UNITS

BASIC CONFIG

Totalizer Control

TOTALIZER CONTROL

START

READ

SENSOR

SIZE

RANGE

STOP

RESET

HOME

FLOW

RATE

DIAGNOSTICS

ADV

DIAG

MENU NAVIGATION

METER VERIFY

XMTR MENU

The totalizer control buttons enable you to view, start, stop, read, and reset the totalizer.

—VIEW TOTAL. Scroll through the totalizer values in aphabetical

order (Totalizer A, Totalizer B, Totalizer C).

—START/READ. This functionality applies to the currently displayed

totalizer value.

• If the totalizers are not running, pressing this button starts ALL

totalizers counting.

• If the totalizers are running, pressing this button pauses the

display, enabling the user to read the total value. It does NOT stop the totalizer value from accumulating in the background. Pressing the button while the display is paused returns the display to the accumulating totalizer value

—STOP/RESET. This functionality applies to the currently displayed

totalizer value.

• If the totalizers are running, pressing this button stops ALL

totalizers from accumulating.

• If the totalizer is stopped, pressing this button resets the total value

to a value of zero.

Note

If you attempt to reset the totalizer from the LOI when it is configured as non-resetable from the LOI, a notification appears.

72 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Operation

Diagnostics

Basic Config

The diagnostics buttons provide direct access to the advanced diagnostic functions of the transmitter and meter verification.

—ADV DIAG. Access the advanced diagnostic menu.

—METER VERIFY. Run Meter Verification.

The basic config buttons provide direct access to the most common transmitter parameters.

—SENSOR CAL NO. Access the sensor calibration number

parameter. Press , , and to modify the sensor calibration number. Press to store the new value as the sensor calibration number.

—SENSOR SIZE. Access the Line Size parameter. Press or to

select the sensor line size. Press to increment the line size. Press to store the new value as the sensor line size.

—FLOW UNITS. Access the Flow Units parameter. Press or to

select the flow units. Press to increment the flow units. Press will store the selection.

Menu Navigation

—RANGE. Access the PV URV parameter. Press , , and to

modify the upper range value. Press to store the new value as the PV Upper Range Value.

The menu navigation buttons enable you to move the display cursor, incrementally increase the value, enter the selected value, display the home screen, or access the transmitter menu.

—HOME/FLOW RATE. Access the flow rate display screen.

—XMTR MENU. Access the transmitter menu structure.

—(Up). Increment a numerical or list value.

—(Left) or E. Back out or enter/store parameters to the transmitter

memory.

—(Down). Decrement a numerical or list value.

—(Right). Highlight a numerical or text character, or increment a

list value.

Reference manual 73

Operation

Press XMTR MENU to access the menu. Use , , , and to navigate the menu structure. A map of the LOI menu structure is shown in Section 7.2.11.

7.2.2 Data entry

The LOI keypad does not have alphanumeric keys. Alphanumeric and symbolic data is entered by the following procedure. Use the steps below to access the appropriate functions.

Procedure

1. Use , , , and to navigate the menu (Section 7.2.11) and access the appropriate alphanumeric parameter.

2. Use

3. Use to highlight each character you want to change and then use and to

, or to begin editing the parameter.

• Press to go back without changing the value.

• For numerical data, scroll through the digits 0-9, decimal point, and dash.

• For alphabetical data, scroll through the letters of the alphabet A-Z, digits 0-9,

and the symbols ?, &, +, -, *, /, $, @,%, and the blank space.

select the value.

7.2.3

If you go past a character that you wish to change, keep using arrive at the character you want to change.

4. Press when all changes are complete to save the entered values.

5. Press again to navigate back to the menu tree.

to wrap around and

Data entry examples

Parameter values are classified as table values or select values.

• Table values are available from a predefined list for parameters such as line size or

flow units.

• Select values are integers, floating point numbers, or character strings and are

entered one character at a time using the arrow keys for parameters such as PV URV and calibration number.

Table value example

Setting the sensor size:

Procedure

1. Press XMTR MENU to access the menu. See Section 7.2.11.

2. Use

3. Use or to increase/decrease the sensor size.

4. When you reach the desired sensor size, press .

5. Set the loop to manual if necessary, and press again.

, , , and to select line size from the basic setup menu.

74 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Operation

After a moment, the LOI will display VALUE STORED SUCCESSFULLY and then display the selected value.

Select value example

Changing the upper range limit:

Procedure

1. Press XMTR MENU to access the menu. See Section 7.2.11.

2. Use

3. Press to position the cursor.

4. Press or to set the number.

5. Repeat steps 3and 4 until desired number is displayed, press .

6. Set the loop to manual if necessary, and press again.

After a moment, the LOI will display VALUE STORED SUCCESSFULLY and then display the selected value.

, , , and to select PV URV from the basic setup menu.

7.2.4 Dynamic variable display pause

To make dynamically changing variables easier to read and record, a pause feature has been built into the LOI.

When viewing a dynamic variable (such as a totalizer value) from the view variable screen, press to pause the display value. To return the screen to the dynamic display mode, press again, or exit the screen by pressing .

Note

It is important to note this feature pauses only the display. While the display is paused, the transmitter continues to measure all variables dynamically, and continues to increment the totalizer.

7.2.5

Totalizer functionality

Totalizer selection

• To view the totalizer values, press to access the LOI menu structure.

• To view the totalizer values, press VIEW TOTAL to access the LOI menu structure.

The first option is the totalizers. Under this section, you can view and configure the totalizers. See Section 8.2.3 for more information on the totalizer functionality.

Start all / Stop all

Totalizers can be started or stopped simultaneously. See Section 8.2.3.

Reference manual 75

Operation

Reset totalizer

The totalizers can be configured to be reset through the LOI. They can be reset individually, or simultaneously through a global command. For details on configuring the reset functionality and on resetting the totalizers, refer to Section 8.2.3.

7.2.6 Display lock

The transmitter has display lock functionality to prevent unintentional configuration changes. The display can be locked manually or configured to automatically lock after a set period of time. When locked, the LOI will display the flow screen.

Manual display lock

To activate, hold the UP arrow for 3 seconds and follow the on-screen instructions. When the display lock is activated, a lock symbol will appear in the lower right hand corner of the display. To deactivate, hold the UP arrow for 3 seconds and follow the on-screen instructions. When the display lock is deactivated, the lock symbol will no longer appear in the lower right hand corner of the display.

7.2.7

Auto display lock

The transmitter can be configured to automatically lock the LOI. Follow the instructions below to access configuration.

Procedure

1. Press XMTR MENU to access the menu. See Section 7.2.11.

2. Scroll to and select LOI Config from the Detailed Setup menu.

3. Press

4. Press or to select the auto lock time.

5. When you reach the desired time, press .

6. Set the loop to manual if necessary, and press .

After a moment, the LOI will display VALUE STORED SUCCESSFULLY and then display the selected value.

to highlight Disp Auto Lock and press to enter the menu.

Security

The transmitter uses two types of protection to prevent users from making changes to the transmitter configuration. Only one security setting is needed to be ON to prevent changes, both security settings need to be OFF to allow changes.

Write protect

Read-only informational variable that reflects the setting of the hardware security switch. If Write Protect is ON, configuration data are protected and cannot be changed from the LOI , a HART-based communicator or control system. If Write Protect is OFF, configuration data may be changed.

76 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

HART Lock (HART 7 only)

Read-only informational variable that reflects the setting of the software security. If HART Lock is ON, configuration data are protected and cannot be changed from the LOI or a HART-based communicator or control system. If HART Lock is OFF, configuration data may be changed.

7.2.8 Locate device

For HART 7 devices with LCD displays, enabling Locate Device displays the characters "0-0-0-0-0-0-0-0-" on the LCD display. This allows for easy field identification of the device during commissioning or service.

7.2.9 Diagnostic messages

Diagnostic messages may appear on the LOI. See Chapter 9 for a complete list of messages, potential causes, and corrective actions for these messages.

7.2.10 Display symbols

Operation

When certain transmitter functions are active, a symbol will appear in the lower-right corner of the display. The possible symbols include the following:

Display Lock

Totalizer

Reverse flow

Continuous meter verification

Reference manual 77

Operation

7.2.11 LOI Menu trees

LOI menu tree for HART rev 5.5 and HART rev 7.1, part 1Figure 7-2:

Test Criteria

Sim Velocity

Flow Sim Dev

Xmtr Cal Verify

Sensor Cal Dev

Sensor Cal

Coil Circuit

Test Condition

Test Criteria

MV Results

Sim Velocity

Actual Velocity

Electrode Ckt

Actual Velocity

Test Condition

Test Criteria

MV Results

Sim Velocity

Actual Velocity

Flow Sim Dev

Xmtr Cal Verify

Sensor Cal Dev

Sensor Cal

Coil Circuit

Electrode Ckt

Test Criteria

Sim Velocity

Actual Velocity

Flow Sim Dev

Coil Inductnce

Sensor Cal Dev

Coil Resist

Electrode Res

4-20mA Expect

4-20mA Actual

Flow Sim Dev

Coil Inductnce

AO FB Dev

Sensor Cal Dev

Coil Resist

Electrode Res

4-20mA Expect

4-20mA Actual

Coil Resist

Coil Inductnce

Electrode Res

Coil Resist

Coil Inductnce

Actual Velocity

Electrode Res

Flow Sim Dev

4-20mA Expect

4-20mA Actual

Coil Resist

Coil Inductnce

AO FB Dev

Electrode Res

Actual Velocity

AO FB Dev

Elec Coating

Empty Pipe

Sensr Baseline

Meter Verif

Continual

Test Criteria

ontinual Meas

Process Noise

Ground/Wiring

Manual Measure

ense Key

License Status

Measurements

4-20 mA Verify

Lic

Empty Pipe

Licensing

Elect Temp

Device ID

Software Rev

Elec Coating

Meter Verif

Line Noise

5Hz SNR

License Key

DI/DO

EC Current Val

EC Max Value

Manual Results

Continual Res

D/A Trim

Digital Trim

37Hz Auto Zero

37Hz SNR

Elec Coating

Signal Power

37Hz Auto Zero

Coil Current

MV Results

Universal Trim

Value

EP Trig Level

EP Counts

EP Control

Control 1

Mode 1

High Limit 1

Low Limit 1

Hysteresis

Control 2

Mode 2

WP Start/Stop

WP Reset

LOI Start/Stop

LOI Reset

TotC Direction

TotC Units

TotA Direction

TotA Units

TotA Reset Cfg

TotB Direction

TotB Units

Reset Total A

Total A Config

Reset Total B

Total B Config

Status All

Start All

Stop All

View Total A

TotC Reset Cfg

TotB Reset Cfg

Coils

Electrodes

Transmitter

Reset Total C

Total C Config

Reset All

Total A

View Total B

View Total C

LOI Control

Write Protect

Empty Pipe

Process Noise

Total B

Total C

Security

Config/Control

Total Control

Total Mode

High Limit 2

Low Limit 2

Analog Output

Ground/Wiring

Elec Coating

Tot Hi Limit

Hysteresis

Elect Temp

Reverse Flow

Cont Meter Ver

Manual Results

Continual Res

Values

Reset Baseline

Recall Values

No Flow

Tot Low Limit

Hysteresis

EC Current Val

EC Limit 1

EC Limit 2

EC Max Value

Self Test

AO Loop Test

Pulse Out Test

Empty Pipe

Elect Temp

Flow Limit 1

Flow Limit 2

Total Limit

Diag Controls

Basic Diag

Advanced Diag

Variables

Flowing, Full

Run Meter Ver

View Results

Reset Max Val

Ground/Wiring

Process Noise

Trims

Status

Totalizers

Diagnostics

78 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Operation

LOI menu tree for HART rev 5.5 and HART rev 7.1, part 2Figure 7-3:

DI/O 1 Control

DI 1

DO 1

Control 1

Mode 1

High Limit 1

Low Limit 1

Hysteresis

Control 2

Mode 2

High Limit 2

Low Limit 2

ess Noise

Empty Pipe

Proc

Grouond/Wiring

Elec Coating

Elect Temp

Reverse Flow

Cont Meter Ver

Flow Limit 1

Flow Limit 2

Total Limit

LRV

PV URV

PV AO

Alarm Type

Test

Alarm Level

AO Diag Alarm

Hysteresis

Pulse Scaling

al Mode

Total Control

Tot

Tot Hi Limit

Tot Low Limit

Hysteresis

Elec Failure

Coil Open Ckt

Empty Pipe

Reverse Flow

Ground/Wiring

Process Noise

Elect Temp

Elec Coat 1

Elec Coat 2

Cont Meter Ver

Coil Over Curr

Sensr Elec Sat

Coil Power Lim

PVSVTV

Simulate Mode

Flow Value

TotA Units

TotB Units

TotC Units

Variable Map

Poll Address

Pulse Width

Pulse Mode

Test

DI/O 1

DO 2

Flow Limit 1

Flow Limit 2

Total Limit

Diag Alert

Analog

Pulse

DI/DO Config

Totalizer

Reverse Flow

Coil Frequency

Proc Density

PV LSL

PV USL

PV Min Span

Alarm Level

Loop Curr Mode

HART

Flow Display

Language

Burst Command

Req Preams

Resp preams

Burst Mode

Simulate Flow *

Software Rev

Tag

Long Tag *

LOI Err Mask

Disp Auto Lock

Backlight

Operating Mode

SP Config

Coil Frequency

PV Damping

Lo-Flow Cutoff

7.3 Field Communicator interface

The transmitter can be configured with a Field Communicator using HART® Protocol gaining access to the software functions, transmitter configurations, and diagnostic settings. Refer to the Field Communicator Manual for detailed instructions on how to connect to the device.

7.3.1 Field Communicator user interface

The device driver uses conditional formatting menus. If the diagnostic is not active, the diagnostic will not be displayed as a menu item in the Field Communicator, and menu trees will be resequenced accordingly.

The device dashboard interface is shown in Figure 7-4. The corresponding menu trees are shown in Section 7.3.2 .

Device Dashboard InterfaceFigure 7-4:

80 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

7.3.2 Field Communicator menu trees

1 Overview

2 Configure

3 Service Tools

1 Device Status 2 Flow Rate 3 Totalizer Values 4 Analog Output 5 Upper Range Value 6 Lower Range Value 7 Run Meter Verif 8 View Report

9 Device Information

1 Identification

2 Revisions 3 Sensor 4 Alarm Type and Security 5 Licenses

1 Guided Setup 2 Manual Setup

3 Alert Setup 4 Calibration

1 Initial Setup 2 Outputs 3 Diagnostics 4 Alerts

5 Optimize Signal Process

1 Basic Setup 2 Configure Display 3 Special Units

1 Analog Output 2 Pulse Output 3 Discrete Input/ Output 4 Totalizers 5 Reverse Flow 6 Alarm Type 7 Burst Mode 8 Variable Mapping

1 Configure Basic Diagnostics 2 License Diagnostics 3 Configure Process Diagnostics 4 Configure Meter Verification 5 Re-Baseline Sensor

1 User Alert Configuration

2 Analog Alert Configuration

1 Basic Setup 2 Outputs 3 HART 4 Discrete IO 5 Diagnostics

6 License Status

7 Signal Processing 8 Totalizers 9 Device Information

1 Primary Var

2 Analog Output 3 Setup 4 Limits 5 Display Setup 6 Special Units

1 Loop Current 2 PV LRV 3 PV URV 4 Damping

1 Language 2 Flow Display 4 Display Lock

1 Tag 2 Model 3 Final Asmbly Num 4 Device ID 5 Date 6 Descriptor 7 Message

1 Calibration Number 2 Line Size

1 Enable Diagnostics 2 License Status

3 Empty Pipe

4 Ground/Wiring Fault 5 High Process Noise

6 Electrode Coating

7 Electronics Temp 8 Coil Current 9 Diag Analog Alert

1 Empty Pipe Value 2 Trigger Level 3 Counts

1 Config Flow Limit 1 2 Config Flow Limit 2 3 Config Total Limit 4 Diagnostic Status

1 Analog Output 2 Pulse Output 3 Totalizer Values

4 Reverse Flow Mode

1 Analog Output Value 2 PV URV 3 PV LRV 4 Damping 5 Density

1 Output Value 2 Mode 3 Scaling 4 Pulse Width

1 Total A Value 2 Tota B Value 3 Total C Value

1 Variable Mapping

2 Communication Settings

3 Burst Mode

1 Electrode Coat Val 2 Level 1 Limit 3 Level 2 Limit 4 Maximum Value 5 Reset Max Coat Val

1 Process Data 2 Operation

3 DSP

4 Coil Drive Frequency 5 Auto Zero

1 DSP 2 Samples 3 Percent of Rate 4 Time Limit

1 Identification

2 Revisions

3 Information 4 Sensor 5 Security Info

1 Tag 2 Manufacturer 3 Model 4 Final Asmbly Num 5 Device ID 6 Write Protect

1 Date 2 Description 3 Message

1 Serial Number 2 Sensor Tag 3 Materials

1 AO Alrm typ 2 Alarm Type 3 High Alarm 4 High Saturation 5 Low Saturation 6 Low Alarm

1 Lower Sensor Limit 2 Upper Sensor Limit 3 Minimum Span

1 Totalizer A 2 Totalizer B 3 Totalizer C 4 Settings 5 Control

1 Direction 2 Units 3 Total A Value 4 Reset Options

1 Direction 2 Units 3 Total B Value 4 Reset Options

1 Direction 2 Units 3 Total C Value 4 Reset Options

1 Start/Stop Security 2 Reset Security 3 Start/Stop from LOI 4 Reset From LOI

1 Reset Totalizer A 2 Reset Totalizer B 3 Reset Totalizer C 4 Reset All Totals 5 Start All Totals 6 Stop All Totals

1 Alarm / Saturation Levels

1 Poll Address 2 Universal Rev 3 Change HART rev

Field Communicator Dashboard Menu Tree (HART v5.5, part 1)Figure 7-5:

Operation

Reference manual 81

1 Overview

2 Configure

3 Service

Tools

1 Guided Setup 2 Manual Setup

3 Alert Setup 4 Calibration

1 Flow/Totalizer Limits 2 Diagnostics 3 Flow Limit 1 4 Flow Limit 2 5 Totalizer Limit 6 Analog Alert 7 Discrete Output Alert

1 Flow Limit 1 2 Flow Limit 2 3 Totalizer Limit

1 AO Alrm typ 2 Alarm Type 3 High Alarm 4 High Saturation 5 Low Saturation 6 Low Alarm

1 Alerts 2 Variables 3 Trends 4 Maintenance 5 Simulate

1 Direction 2 Discrete Input 1 3 Discrete Output 1

1 Discrete I/O 1

2 DO 2 Mode 3 Diag Status Alert

1 Flow 2 Empty Pipe Value 3 Electronics Temp 4 Line Noise 5 5 Hz SNR 6 37 Hz SNR 7 Coil Inductance 8 Coil Resistance 9 Electrode Resistance

1 Alarm/Saturation Levels

2 Diag Analog Alert

1 High Limit 1 2 Low Limit 1 3 Limit 1 Control 4 Status Alert 5 Config Flow Limit 1 6 Flow Hysteresis 7 Alert Image

1 Status Alert 2 Config Flow Limit 1

1 Enable Diagnostics 2 Cont Verif Limits

1 Sensor Baseline 2 Sensor Measurements 3 Transmitter Measurements 4 Analog Output Measurements

1 Simulated Velocity 2 Actual Velocity 3 Velocity Deviation

1 Coil Resistance 2 Coil Inductance 3 Electrode Resistance 4 Coil Baseline Dev

1 Manual Meter Verification 2 Continuous Meter Verification 3 4-20 mA Verification 4 Analog Calibration

5 Electronics Trim 6 Reset/Restore

1 Coil Resistance 2 Coil Inductance 3 Electrode Resistance 4 Re-Baseline Sensor 5 Recall Last Baseline

1 Coil Resistance 2 Coil Inductance 3 Electrode Resistance

1 Analog Output 2 Pulse Output

1 Sensor Baseline

2 Continuous Meter Verification

3 Continuous Sensor Meas 4 Transmitter Measurements

1 Loop Current 2 PV % rnge 3 PV LRV 4 PV URV 5 Analog Trim 6 Scaled Analog Trim

1 Run 4-20 mA Verif

2 Measurements

1 Status Alert 2 Config Flow Limit 2

1 Status Alert 2 Config Total Limit

1 High Limit 2 2 Low Limit 2 3 Limit 2 Control 4 Status Alert 5 Config Flow Limit 2 6 Flow Hysteresis 7 Alert Image

1 High Limit 2 Low Limit 3 Limit Control 4 Status Alert 5 Config Total Limit 6 Totalizer Hysteresis 7 Alert Image

1 Universal Trim

1 Refresh Alerts 2 Active Alerts

1 Variable Summary 2 Mapped Variables 3 Device Variables

4 Basic Diagnostics 5 Process Diagnostics 6 Continuous Meter Verification

1 Flow Rate 2 Loop Current 3 PV % Range 4 Total A Value 5 Total B Value 6 Total C Value

1 Empty Pipe Value 2 Electronics Temp 3 Coil Current

1 Line Noise 2 Electrode Coat Val

3 Process Noise

1 5 Hz SNR 2 37 Hz SNR 3 Signal Power

1 Coil Resistance 2 Coil Inductance 3 Electrode Resistance

1 Expected mA Value 2 Actual mA Value 3 mA Deviation

1 Sensor Baseline 2 Manual Sensor Measurements

3 License Status

4 Manual Meter Verification Limits

5 Continuous Meter Verification 6 Run Meter Verification 7 View Report

1 No Flow Limit 2 Flowing Limit 3 Empty Pipe Limit

1 Coil Resistance 2 Coil Inductance 3 Electrode Resistance 4 Re-Baseline Sensor 5 Recall Last Baseline

1 Coil Resistance 2 Coil Inductance 3 Electrode Resistance

1 Velocity Deviation 2 mA Deviation

1 Test Conditions

2 Configuration

3 Sensor Health 4 Sensor Calibration 5 Transmitter Cal 6 Final Results

1 Coil Resistance 2 Meas Coil Resist 3 Coil Circuit Test 4 Electrode Resistance 5 Meas Elect Resist 6 Electrode Circuit Test

1 Coil Inductance 2 Meas Coil Induct 3 Sensor Deviation 4 Result

1 Simulated Velocity 2 Actual Velocity 3 Trans Deviation 4 Result

1 Flowing Limit 2 Overall Result

1 4 mA 2 12 mA 3 20 mA 4 Lo Alert 5 Hi Alert

Operation

Field Communicator Dashboard Menu Tree (HART v5.5, part 2)Figure 7-6:

82 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

1 Overview

2 Configure

3 Service Tools

1 Device Status 2 Comm Status 3 Flow Rate 4 Totalizer Values 5 Analog Output 6 PV URV 7 PV LRV 8 Run Meter Verif 9 View Report

10 Device Information

1 Identification

2 Revisions 3 Sensor 4 Alarm Type and Security 5 Licenses

1 Guided Setup 2 Manual Setup

3 Alert Setup 4 Calibration

1 Initial Setup 2 Outputs 3 Diagnostics 4 Alerts

5 Optimize Signal Process

1 Basic Setup 2 Configure Display 3 Special Units

1 Analog Output 2 Pulse Output 3 Discrete Input/ Output 4 Totalizers 5 Reverse Flow 6 Alarm Type 7 Burst Mode 8 Variable Mapping

1 Configure Basic Diagnostics 2 License Diagnostics 3 Configure Process Diagnostics 4 Configure Meter Verification 5 Re-Baseline Sensor

1 User Alert Configuration

2 Analog Alert Configuration

1 Basic Setup 2 Outputs 3 HART 4 Discrete IO 5 Diagnostics

6 License Status

7 Signal Processing 8 Totalizers 9 Device Information

1 Primary Process Variable

2 Analog Output 3 Setup 4 Limits 5 Display Setup

6 Special Units

1 Loop Current 2 PV LRV 3 PV URV 4 Damping 5 Density

1 Language 2 Flow Display 3 Display Lock

1 Tag 2 Long Tag 3 Model 4 Final Asmbly Num 5 Device ID 6 Date 7 Descriptor 8 Message

1 Calibration Number 2 Line Size

1 Enable Diagnostics 2 License Status

3 Empty Pipe

4 Ground/Wiring Fault 5 High Process Noise

6 Electrode Coating

7 Electronics Temp 8 Coil Current 9 Diag Analog Alert

1 Empty Pipe Value 2 Trigger Level 3 Counts

1 Config Flow Limit 1 2 Config Flow Limit 2 3 Config Total Limit 4 Diagnostic Status

1 Analog Output 2 Pulse Output 3 Totalizer Values

4 Reverse Flow Mode

1 Loop Current 2 PV URV 3 PV LRV 4 Damping 5 Density

1 Output Value 2 Mode 3 Scaling 4 Pulse Width

1 Total A Value 2 Total B Value 3 Total C Value

1 Variable Mapping

2 Communication Settings

3 Burst Mode Config

1 Electrode Coat Val 2 Level 1 Limit 3 Level 2 Limit 4 Maximum Value 5 Reset Max Coat Val

1 Process Data 2 Operation

3 DSP

4 Coil Drive Frequency 5 Auto Zero

1 Control 2 Samples 3 Percent of Rate 4 Time Limit

1 Identification

2 Revisions

3 Information 4 Sensor

5 Security Info

1 Tag 2 Long Tag 3 Manufacturer 4 Model 5 Final asmbly num 6 Device iD 7 Write protect

1 Date 2 Descriptor 3 Message

1 Serial Number 2 Sensor Tag 3 Materials

1 AO Alrm typ 2 Alarm Type 3 High Alarm 4 High Saturation 5 Low Saturation 6 Low Alarm

1 Lower Sensor Limit 2 Upper Sensor Limit 3 Minimum Span

1 Totalizer A 2 Totalizer B 3 Totalizer C 4 Settings 5 Control

1 Direction 2 Units 3 Total A Value 4 Reset Options

1 Direction 2 Units 3 Total B Value 4 Reset Options

1 Direction 2 Units 3 Total C Value 4 Reset Options

1 Start/Stop Security 2 Reset Security 3 Start/Stop from LOI 4 Reset From LOI

1 Reset Totalizer A 2 Reset Totalizer B 3 Reset Totalizer C 4 Reset All Totals 5 Start All Totals 6 Stop All Totals

1 Alarm Saturation Levels 2 Security

1 Poll addr 2 Change Poll Address 3 Universal rev 4 Change HART Rev

1 Write protect 2 HART Lock

Operation

Field Communicator Dashboard Menu Tree (HART v7.1, part 1)Figure 7-7:

Reference manual 83

1 Overview

2 Configure

3 Service

Tools

1 Guided Setup 2 Manual Setup

3 Alert Setup 4 Calibration

1 Flow/Totalizer Limits 2 Diagnostics 3 Flow Limit 1 4 Flow Limit 2 5 Totalizer Limit 6 Analog Alert 7 Discrete Output Alert

1 Flow Limit 1 2 Flow Limit 2 3 Totalizer Limit

1 AO Alrm typ 2 Alarm Type 3 High Alarm 4 High Saturation 5 Low Saturation 6 Low Alarm

1 Alerts 2 Variables 3 Trends 4 Maintenance 5 Simulate

1 Direction 2 Discrete Input 1 3 Discrete Output 1

1 Discrete I/O 1

2 DO 2 Mode 3 Diag Status Alert

1 Flow 2 Empty Pipe 3 Electronics Temp 4 Line Noise 5 5 Hz SNR 6 37 Hz SNR 7 Coil Inductance 8 Coil Resistance 9 Electrode Resistance

1 Alarm/Saturation Levels

2 Diag Analog Alert

1 High Limit 1 2 Low Limit 1 3 Limit 1 Control 4 Status Alert 5 Config Flow Limit 1 6 Flow Hysteresis 7 Alert Image

1 Status Alert 2 Config Flow Limit 1

1 Enable Diagnostics 2 Cont Verif Limit

1 Sensor Baseline 2 Sensor Measurements 3 Transmitter Measurements 4 Analog Output Measurements

1 Simulated Velocity 2 Actual Velocity 3 Velocity Deviation

1 Coil Resistance 2 Coil Inductance 3 Electrode Resistance 4 Coil Baseline Dev

1 Manual Meter Verification 2 Continuous Meter Verification 3 4-20 mA Verification 4 Analog Calibration

5 Electronics Trim

6 Reset/Restore

1 Coil Resistance 2 Coil Inductance 3 Electrode Resistance 4 Re-Baseline Sensor 5 Recall Last Baseline

1 Coil Resistance 2 Coil Inductance 3 Elec Resistance

1 Analog Output 2 Pulse Output

1 Sensor Baseline

2 Continuous Meter Verification

3 Continuous Sensor Meas 4 Transmitter Measurements

1 Loop Current 2 PV % rnge 3 PV LRV 4 PV URV 5 Analog Trim 6 Scaled Analog Trim

1 Run 4-20 mA Verif

2 Measurement

1 Status Alert 2 Config Flow Limit 2

1 Status Alert 2 Config Total Limit

1 High Limit 2 2 Low Limit 2 3 Limit 2 Control 4 Status Alert 5 Config Flow Limit 2 6 Flow Hysteresis 7 Alert Image

1 High Limit 2 Low Limit 3 Limit Control 4 Status Alert 5 Config Total Limit 6 Totalizer Hysteresis 7 Alert Image

1 Universal Trim

1 Refresh Alerts 2 Active Alerts

1 Variable Summary 2 Mapped Variables 3 Device Variables

4 Basic Diagnostics 5 Process Diagnostics 6 Continuous Meter Verification

1 Flow Rate 2 Status 3 Loop Current 4 PV % rnge 5 Total A Value 6 Total B Value 7 Total C Value

1 Empty Pipe Value 2 Status 3 Electronics Temp 4 Status 5 Coil Current

1 Line Noise 2 Status 3 Electrode Coat Val 4 Status

5 Process Noise

1 5 Hz SNR 2 Status 3 37 Hz SNR 4 Status 5 Signal Power 6 Status

1 Coil Resistance 2 Coil Inductance 3 Electrode Resistance

1 Expected mA Value 2 Actual mA Value 3 mA Deviation

1 Sensor Baseline 2 Manual Sensor Measurements

3 License Status

4 Manual Meter Verification Limits

5 Continuous Meter Verification 6 Run Meter Verification 7 View Report

1 No Flow Limit 2 Flowing Limit 3 Empty Pipe Limit

1 Coil Resistance 2 Coil Inductanice 3 Electrode Resistance 4 Re-Baseline Sensor 5 Recall Last Baseline

1 Coil Resistance 2 Coil Inductance 3 Electrode Resistance

1 Velocity Deviation 2 mA Deviation

1 Test Conditions 2 Configuration 3 Sensor Health 4 Sensor Calibration 5 Transmitter Cal 6 Final Results

1 Coil Resistance 2 Meas Coil Resist 3 Coil Circuit Test 4 Electrode Resistance 5 Meas Elect Resist 6 Electrode Circuit Test

1 Coil Inductance 2 Meas Coil Induct 3 Sensor Deviation 4 Result

1 Simulated Velocity 2 Actual Velocity 3 Trans Deviation 4 Result

1 Flowing Limit 2 Overall Result

1 4 mA 2 12 mA 3 20 mA 4 Lo Alert 5 Hi Alert

1 Master Reset 2 Locate Device

Operation

Field Communicator Dashboard Menu Tree (HART v7.1, part 2)Figure 7-8:

84 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

8 Advanced Configuration

Functionality

Topics covered in this chapter:

Introduction

•

Configure outputs

•

Configure HART

•

Configure LOI

•

Additional parameters

•

Configure special units

•

8.1 Introduction

Advanced Configuration Functionality

8.2

8.2.1

This section contains information for advanced configuration parameters.

The software configuration settings for the transmitter can be accessed through a HART®based communicator, Local Operator Interface (LOI), AMS, or through a control system. Before operating the transmitter in an actual installation, you should review all of the factory set configuration data to ensure that they reflect the current application.

Configure outputs

LOI menu path Detailed Setup > Output Config

The configure outputs functionality is used to configure advanced features that control the analog, pulse, auxiliary, and totalizer outputs of the transmitter.

Analog output

LOI menu path Detailed Setup > Output Config > Analog

The analog output function is used to configure all of the features of the 4-20 mA output.

Upper range value

LOI menu path

Reference manual 85

Detailed Setup > Output Config > Analog > PV URV

Advanced Configuration Functionality

The upper range value (URV) sets the 20 mA point for the analog output. This value is typically set to full-scale flow. The units that appear will be the same as those selected under the units parameter. The URV may be set between –39.3 ft/s to 39.3 ft/s (–12 m/s to 12 m/s) or the equivalent range based on the selected flow units. There must be at least 1 ft/s (0.3 m/s) span or equivalent between the URV and LRV.

Lower range value

LOI menu path Detailed Setup > Output Config, > Analog > PV LRV

The lower range value (LRV) sets the 4 mA point for the analog output. This value is typically set to zero flow. The units that appear will be the same as those selected under the units parameter. The LRV may be set between –39.3 ft/s to 39.3 ft/s (–12 m/s to 12 m/s) or the equivalent range based on the selected flow units. There must be at least 1 ft/s (0.3 m/s) span or equivalent between the URV and LRV.

Alarm type

LOI menu path Detailed Setup > Output Config > Analog > Alarm Type

The analog output alarm type displays the position of the alarm switch on the electronics board. There are two available positions for this switch:

• High

• Low

Alarm level

LOI menu path

Detailed Setup > Output Config > Analog > Alarm Level

The alarm level configuration will drive the transmitter to preset values if an alarm occurs. There are two options:

• Rosemount Alarm and Saturation Values (see table Table 8-1 for specific values)

• NAMUR-Compliant Alarm and Saturation Values (see Table 8-2 for specific values)

Rosemount ValuesTable 8-1:

Level 4-20 mA saturation 4-20 mA alarm

Low 3.9 mA 3.75 mA

High 20.8 mA 22.5 mA

NAMUR ValuesTable 8-2:

Level 4-20 mA saturation 4-20 mA alarm

86 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Advanced Configuration Functionality

NAMUR Values (continued)Table 8-2:

Low 3.8 mA 3.5 mA

High 20.5 mA 22.6 mA

AO diagnostic alarm

LOI menu path Detailed Setup > Output Config > Analog > AO Diag Alarm

There are diagnostics that, when under active conditions, do not drive the analog output to alarm level. The AO diagnostic alarm menu enables selection of these diagnostics to be associated with an analog alarm. If any of the selected diagnostics are active, it will cause the analog output to go to the configured alarm level. For a list of diagnostic alarms that can be configured to drive an analog alarm, see Table 8-3.

Analog Alarm Diagnostic OptionsTable 8-3:

Diagnostic Description

Empty Pipe

Reverse Flow Drive to an alarm state when reverse flow is detected.

Grounding / Wiring Fault Drive to an alarm state when grounding or wiring fault is detec-

High Process Noise Drive to an alarm state when the transmitter detects high levels

Electronics Temperature Out of Range

Electrode Coating Limit 2 Drive to an alarm state when electrode coating reaches a point

Totalizer Limit 1 Drive to an alarm state when the totalizer value exceeds the pa-

Flow Limit 1 Drive to an alarm state when the flow rate exceeds the parame-

Flow Limit 2 Drive to an alarm state when the flow rate exceeds the parame-

(1)

Drive to an alarm state when empty pipe is detected.

ted.

of process noise.

Drive to an alarm state when the temperature of the electronics exceeds allowable limits

where it impacts the flow measurement

rameters set in the totalizer limit configuration (see page 5-x for more details on this functionality)

ters set in the flow limit 1 configuration (see page 5-x for more details on this functionality)

ters set in the flow limit 2 configuration (see page 5-x for more details on this functionality)

Reference manual 87

Advanced Configuration Functionality

Analog Alarm Diagnostic Options (continued)Table 8-3:

Diagnostic Description

Continuous Meter Verification Drive to an alarm state when the continuous meter verification

(1) See Chapter 12 for more details on each of the diagnostics

8.2.2 Pulse output

LOI menu path Detailed Setup > Output Config > Pulse

Under this function the pulse output of the transmitter can be configured.

Pulse scaling

LOI menu path Detailed Setup > Output Config > Pulse > Pulse Scaling

diagnostic detects a failure of one of the tests

Transmitter may be commanded to supply a specified frequency between 1 pulse/ day at

39.37 ft/sec (12 m/s) to 10,000Hz at 1 ft/sec (0.3 m/s).

Note

Line size, special units, and density must be selected prior to configuration of the pulse scaling factor.

The pulse output scaling equates one transistor switch closure pulse to a selectable number of volume units. The volume unit used for scaling pulse output is taken from the numerator of the configured flow units. For example, if gal/min had been chosen when selecting the flow unit, the volume unit displayed would be gallons.

Note

The pulse output scaling is designed to operate between 0 and 10,000Hz. The minimum conversion factor value is found by dividing the minimum span (in units of volume per second) by 10,000Hz.

Note

The maximum pulse scaling frequency for transmitters with an intrinsically safe output (output option code B) is 5000Hz.

When selecting pulse output scaling, the maximum pulse rate is 10,000Hz. With the 110 percent over range capability, the absolute limit is 11,000Hz. For example, if you want the transmitter to pulse every time 0.01 gallons pass through the sensor, and the flow rate is 10,000 gal/min, you will exceed the 10,000Hz full-scale limit:

88 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Advanced Configuration Functionality

10,000 gal

1 min

(60 sec)

××

1 pulse

0.01 gal

= 16,666.7 Hz

The best choice for this parameter depends upon the required resolution, the number of digits in the totalizer, the extent of range required, and the maximum frequency limit of the external counter.

Pulse factor units

The pulse factor unit assigns the unit of measure to the pulse scaling factor. The default read-only value is the unit of measure from the configured flow units. For example, if gal/min is selected when configuring the flow units, the pulse factor unit will be gallons.

Pulse width

LOI menu path Detailed Setup > Output Config > Pulse > Pulse Width

The factory default pulse width is 0.5 ms.

The width, or duration, of the pulse can be adjusted to match the requirements of different counters or controllers (see Figure 8-1). These are typically lower frequency applications (< 1000Hz). The transmitter will accept values from 0.1 ms to 650 ms.

For frequencies higher than 1000Hz, it is recommended to set the pulse mode to 50% duty cycle by setting the pulse mode to frequency output.

The pulse width will limit the maximum frequency output, If the pulse width is set too wide (more than 1/2 the period of the pulse) the transmitter will limit the pulse output. See example below.

Pulse OutputFigure 8-1:

A. Open B. Pulse width C. Period D. Closed

Example

Reference manual 89

Advanced Configuration Functionality

If pulse width is set to 100 ms, the maximum output is 5Hz; for a pulse width of 0.5 ms, the maximum output would be 1000Hz (at the maximum frequency output there is a 50% duty cycle).

Pulse width

100 ms 200 ms

Minimum period (50% duty cycle) Maximum frequency

1 cycle

200 ms

= 5 Hz

0.5 ms 1.0 ms

1 cycle

1.0 ms

= 1000 Hz

To achieve the greatest maximum frequency output, set the pulse width to the lowest value that is consistent with the requirements of the pulse output power source, pulse driven external totalizer, or other peripheral equipment.

The maximum flow rate is 10,000 gpm. Set the pulse output scaling such that the transmitter outputs 10,000Hz at 10,000 gpm.

Pulse Scaling =

Pulse Scaling = 0.0167

1 pulse = 0.0167 gal

Flow Rate (gpm)

sec

(60 ×)

min

10,000 gpm

sec

(60 ×)

min

gal

pulse

(frequency)

(10,000 Hz)

Note

Changes to pulse width are only required when there is a minimum pulse width required for external counters, relays, etc.

The external counter is ranged for 350 gpm and pulse is set for one gallon. Assuming the pulse width is 0.5 ms, the maximum frequency output is 5.833Hz.

Frequency =

Pulse Scaling =

Frequency = 5.833 Hz

Flow Rate (gpm)

sec

(60 ×) )(

min

(60 ×)

pulse scaling

350 gpm

sec

min

pulse

gal

pulse

gal

The upper range value (20mA) is 3000 gpm. To obtain the highest resolution of the pulse output, 10,000Hz is scaled to the full scale analog reading.

90 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Advanced Configuration Functionality

Frequency =

Pulse Scaling =

Pulse Scaling = 0.005

Flow Rate (gpm)

sec min

3,000 gpm

sec

(60 ×)

min

pulse

pulse scaling

gal

(60 ×) )(

1 pulse = 0.005 gal

10,000 Hz

gal

pulse

Pulse mode

LOI menu path Detailed Setup > Output Config > Pulse > Pulse Mode

The pulse mode configures the frequency output of the pulse. It can be set to either 50% duty cycle, or fixed. There are two options that pulse mode can be configured to:

• Pulse Output (user defines a fixed pulse width)

• Frequency Output (pulse width automatically set to 50% duty cycle)

To use pulse width settings, pulse mode must be set to pulse output.

8.2.3 Totalizer

The totalizer provides the total amount of fluid that has passed through the meter. There are three available totalizers: Total A, Total B, and Total C. They can be independently configured for one of the following options:

• Net - increments with forward flow and decrements with reverse flow (reverse flow

must be enabled).

• Reverse total - will only increment with reverse flow if reverse flow is enabled

• Forward total - will only increment with forward flow

All totalizer values will be reset if line size is changed. This will happen even if the totalizer reset control is set to non-resettable.

The totalizers have the capability to increment the total to a maximum value of 50 feet per second of flow (or the volumetric equivalent) for a period of 20 years before roll-over occurs.

View Totals

LOI menu path

Totalizer A: Totalizers > View Total A

Totalizer B: Totalizers > View Total B

Totalizer C: Totalizers > View Total C

Displays the current value for each totalizer and shows the totalizer incrementing/ decrementing based on totalizer configuration and flow direction.

Reference manual 91

Advanced Configuration Functionality

Configure totalizers

LOI menu path Totalizers > Config/Control

Start, stop, and reset all totalizers, configure the independent totalizers, and security controls for write protecting and resetting the individual totalizers.

Note

If an individual totalizer is configured as non-resettable, the global totalizer reset command will not affect that totalizer.

Note

If an individual totalizer is configured as write protected, the global totalizer start/stop/reset commands will not affect that totalizer.

Totalizer direction

LOI menu path Totalizer A: Totalizers > Config/Control > Total A > Total A Config

> Direction

Totalizer B: Totalizers > Config/Control > Total B > Total B Config > Direction

Totalizer C: Totalizers > Config/Control > Total C > Total C Config > Direction

Configure the direction for the totalizers as either Net, Forward, or Reverse.

Totalizer units

LOI menu path

Totalizer A: Totalizers > Config/Control > Total A > Total A Config > TotA Units

Totalizer B: Totalizers > Config/Control > Total B > Total B Config > TotB Units

Totalizer C: Totalizers > Config/Control > Total C > Total C Config > TotC Units

Configure the units for totalizers.

Totalizer unitsTable 8-4:

Volume units Mass units Other units

LOI abbreviation Units LOI abbreviation Units LOI abbreviation Units

gal Gallons KG Kilograms ft Feet

l Liters Mton Metric tons m Meters

92 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Advanced Configuration Functionality

Totalizer units (continued)Table 8-4:

Volume units Mass units Other units

LOI abbreviation Units LOI abbreviation Units LOI abbreviation Units

Igal Imperial gallons lb Pounds Special Special Units

m3 Cubic meters Ston Short tons

B42 Barrels (42 gal-

lonsJ)

ft3 Cubic feet

cm3 Cubic centimeters

B31 Barrels (31 gal-

lons)

Mgal Million gallons

(1) See Section 8.6.

Reset configuration

(1)

LOI menu path Totalizer A: Totalizers > Config/Control > Total A > Total A Config

> TotA Reset Config

Totalizer B: Totalizers > Config/Control > Total B > Total B Config > TotB Reset Config

Totalizer C: Totalizers > Config/Control > Total C > Total C Config > TotC Reset Config

Configure if the totalizer is non-resettable, or if it can be reset through the reset commands.

Reset individual totalizer

LOI menu path

Totalizer A: Totalizers > Config/Control > Total A > Reset Total A

Totalizer B: Totalizers > Config/Control > Total B > Reset Total B

Totalizer C: Totalizers > Config/Control > Total C > Reset Total C

Independently reset the totalizers. This requires the reset option to be configured as resettable.

Reset all totalizers

LOI menu path

Totalizers > Config/Control > Reset All

This global command will reset totalizer values to zero for all totalizers that have been configured as resettable.

Reference manual 93

Advanced Configuration Functionality

Totalizer security

LOI menu path Totalizers > Config/Control > Security

Configure totalizer security capabilities for the Local Operator Interface and write protection.

LOI control

LOI menu path Totalizers > Config/Control > Security > LOI Control

Configure the ability to start, stop, and reset the totalizers through the LOI.

LOI totalizer start/stop

LOI menu path Totalizers > Config/Control > Security > LOI Control > LOI Start/

Stop

Enable/disable the ability to start or stop totalizers through the LOI.

LOI totalizer reset

LOI menu path

Totalizers > Config/Control > Security > LOI Control > LOI Reset

Enable/disable the ability to reset the totalizers through the LOI.

Totalizer write protection

LOI menu path

Totalizers > Config/Control > Security > Write Protect

In addition to controlling the LOI capability to start/stop and reset the totalizers, specific write protect functionality can also be configured adding an additional level of security to the totalizers.

Start/stop write protect

LOI menu path

Totalizers > Config/Control > Security > Write Protect > WP Start/ Stop

Configure write protection on the ability to start or stop the totalizers. This is a global command and applies to all totalizers.

94 Rosemount® 8712EM Transmitter with HART Protocol Reference Manual

Rosemount 8712 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Safety messages

System description

Introduction

2.2 Product recycling/disposal

Handling and Lifting Safety

Sensor Installation

3.2 Location and Position

3.2.1 Environmental considerations

3.2.2 Upstream and downstream piping

Flow direction

3.2.4 Sensor piping location and orientation

Sensor Installation

Electrode orientationFigure 3-4:

3.3.1 Flanged sensors

3.3.2 Wafer sensors

Installation

3.3.3 Sanitary senors

Process reference connection

Remote Transmitter Installation

Pre-installation

Transmitter symbols

4.3 Mounting

Pipe mounting

Surface mounting

4.4 Wiring

4.4.1 Conduit entries and connections

4.4.2 Conduit requirements

Sensor to transmitter wiring

4.4.4 Wiring diagrams

4.4.5 Power and I/O terminal blocks

4.4.6 Powering the transmitter

Analog output

Basic Setup

Basic Configuration

5.2 Local operator interface (LOI)

5.3 Field Communicator interface

5.4 Measurement units

Hardware switches

Advanced installation details

6.1.1 Alarm mode

Transmitter security

Internal/external analog power

6.1.4 Internal/external pulse power

6.1.5 Changing hardware switch settings

Additional loops

6.2.1 Connect pulse output

External

Connecting an external power supply

Internal

Connect discrete output

Connect discrete input

6.3 Coil housing configuration

Standard coil housing configuration

6.3.2 Process leak protection (option M1)

6.3.3 Process leak containment (Option M2 or M4)

6.3.4 Process leak containment with electrode access (option M3)

6.3.5 Higher temperature applications and sensor insulation best practices

Introduction

Local operator interface (LOI)

Operation

Basic features

7.2.2 Data entry

Data entry examples

Table value example

Select value example

7.2.4 Dynamic variable display pause

Totalizer functionality

Totalizer selection

Start all / Stop all

Reset totalizer

7.2.6 Display lock

Manual display lock

Auto display lock

Security

7.2.8 Locate device