Emerson Rosemount Foundation 8750W Reference Manual

Download

Page 1

00809-0500-4750, Rev AA

Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Reference manual

May 2019

Page 2

Page 3

Reference manual Contents

00809-0500-4750 May 2019

Chapter 1 Safety messages.............................................................................................................7

Chapter 2 Introduction.................................................................................................................11

2.1 System description.........................................................................................................................11

2.2 Product recycling/disposal............................................................................................................. 12

Chapter 3 Sensor Installation....................................................................................................... 13

3.1 Handling and Lifting Safety.............................................................................................................13

3.2 Location and Position..................................................................................................................... 13

3.3 Sensor installation ......................................................................................................................... 16

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....................................................................................................................................... 28

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

4.5 Cover jam screw............................................................................................................................. 51

Chapter 5 Basic Configuration...................................................................................................... 53

5.1 Communication methods...............................................................................................................53

5.2 FOUNDATION fieldbus configuration..................................................................................................53

5.3 Basic Setup.....................................................................................................................................55

Chapter 6 Advanced installation details........................................................................................57

6.1 Hardware switches......................................................................................................................... 57

6.2 Connect pulse output.....................................................................................................................60

6.3 Coil housing configuration............................................................................................................. 65

Chapter 7 Advanced Configuration Functionality......................................................................... 73

7.1 Introduction................................................................................................................................... 73

7.2 Configure outputs.......................................................................................................................... 73

7.3 Configure LOI/Display.....................................................................................................................80

7.4 Signal processing............................................................................................................................81

Chapter 8 Advanced Diagnostics Configuration............................................................................85

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

8.2 Licensing and enabling................................................................................................................... 86

8.3 Tunable empty pipe detection........................................................................................................87

8.4 Electronics temperature................................................................................................................. 88

8.5 Ground/wiring fault detection........................................................................................................ 89

8.6 High process noise detection..........................................................................................................90

Reference manual 3

Page 4

Contents Reference manual

May 2019 00809-0500-4750

8.7 Coated electrode detection............................................................................................................91

8.8 SMART™ Meter Verification.............................................................................................................92

8.9 Run manual SMART Meter Verification........................................................................................... 95

8.10 Continuous SMART Meter Verification..........................................................................................97

8.11 SMART Meter Verification test results...........................................................................................97

8.12 SMART Meter Verification measurements.................................................................................... 98

8.13 Optimizing the SMART Meter Verification.................................................................................. 100

Chapter 9 Digital Signal Processing............................................................................................ 103

9.1 Introduction................................................................................................................................. 103

9.2 Process noise profiles................................................................................................................... 103

9.3 High process noise diagnostic...................................................................................................... 103

9.4 Optimizing flow reading in noisy applications...............................................................................104

9.5 Explanation of signal processing algorithm...................................................................................107

Chapter 10 Maintenance..............................................................................................................109

10.1 Introduction............................................................................................................................... 109

10.2 Safety information......................................................................................................................109

10.3 Installing a LOI/Display (field mount)..........................................................................................110

10.4 Installing a LOI/Display (wall mount).......................................................................................... 111

10.5 Replacing electronics stack (field mount)................................................................................... 112

10.6 Replacing electronics stack (wall mount)....................................................................................113

10.7 Replacing a socket module/terminal block................................................................................. 115

10.8 Trims..........................................................................................................................................119

10.9 Review........................................................................................................................................120

Chapter 11 Troubleshooting........................................................................................................ 121

11.1 Introduction............................................................................................................................... 121

11.2 Safety information......................................................................................................................121

11.3 Installation check and guide....................................................................................................... 122

11.4 Diagnostic messages..................................................................................................................123

11.5 Basic troubleshooting.................................................................................................................132

11.6 Sensor troubleshooting.............................................................................................................. 135

11.7 Installed sensor tests.................................................................................................................. 138

11.8 Uninstalled sensor tests..............................................................................................................140

11.9 Technical support.......................................................................................................................142

11.10 Service..................................................................................................................................... 143

Appendix A Product Specifications................................................................................................145

A.1 Basic specifications.......................................................................................................................145

A.2 Transmitter specifications............................................................................................................ 148

A.3 Sensor specifications....................................................................................................................156

Appendix B Product Certifications................................................................................................ 161

Appendix C Transducer block........................................................................................................163

4 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 5

Reference manual Contents

00809-0500-4750 May 2019

Appendix D Resource block...........................................................................................................177

Appendix E Analog Input (AI) Function Block................................................................................ 187

Reference manual 5

Page 6

Contents Reference manual

May 2019 00809-0500-4750

6 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 7

Reference manual Safety messages

00809-0500-4750 May 2019

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 nuclear-qualified hardware or products may cause inaccurate readings. For information on Emerson nuclear-qualified products, contact your local sales representative.

Reference manual 7

Page 8

Safety messages Reference manual

May 2019 00809-0500-4750

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.

• 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.

• 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.

• 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.

NOTICE

Damage hazards

Failure to follow these instructions could result in damage or destruction of equipment.

8 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 9

Reference manual Safety messages

00809-0500-4750 May 2019

• 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 stated 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 9

Page 10

Safety messages Reference manual

May 2019 00809-0500-4750

10 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 11

Reference manual

00809-0500-4750 May 2019

Introduction

2 Introduction

2.1 System description

The flowmeter consists of a sensor and a transmitter. The sensor is installed in-line with the process piping; the transmitter can be integrally mounted to the sensor or remotely mounted away from the sensor.

Figure 2-1: Intergral field mount transmitter

Figure 2-2: Remote field mount transmitter

Figure 2-3: Wall mount transmitter

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 2-4.

Reference manual 11

Page 12

Introduction Reference manual

May 2019 00809-0500-4750

Figure 2-4: Sensor cross section

A. Electrode

B. Coils

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.

12 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 13

Reference manual Sensor Installation

00809-0500-4750 May 2019

3 Sensor Installation

Related information

Remote Transmitter 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.

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:

• High-vibration lines with integrally mounted transmitters

• Tropical/desert installations in direct sunlight

• Outdoor installations in arctic climates

Reference manual 13

Page 14

Sensor Installation Reference manual

May 2019 00809-0500-4750

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.

Figure 3-1: Upstream and downstream straight pipe diameters

3.2.3

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 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.

Figure 3-2: Flow direction arrow

14 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 15

Reference manual Sensor Installation

00809-0500-4750 May 2019

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.

Figure 3-3: Sensor orientation

3.2.5

A. Flow direction

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 Figure 3-4.

Reference manual 15

Page 16

Sensor Installation Reference manual

May 2019 00809-0500-4750

Figure 3-4: Electrode orientation

A. Correct orientation

B. Incorrect orientation

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

3.3 Sensor installation

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.

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.

16 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 17

Reference manual Sensor Installation

00809-0500-4750 May 2019

Figure 3-5: Gasket placement for flanged sensors

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.

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.

Reference manual 17

Page 18

Sensor Installation Reference manual

May 2019 00809-0500-4750

Figure 3-6: Flange bolt torquing sequence

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

Table 3-1: Lining material

Fluoropolymer liners Non-fluoropolymer liners

T - PTFE P - Polyurethane

Table 3-2: Suggested flange bolt torque values for Rosemount 8750W (ASME)

Size code

005 0.5 inch (15 mm) 8 8 N/A N /A

010 1 inch (25 mm) 8 12 6 10

015 1.5 inch (40 mm) 13 25 7 18

020 2 inch (50 mm) 19 17 14 11

025 2.5 inch (65 mm) 22 24 17 16

030 3 inch (80 mm) 34 35 23 23

Line size Fluoropolymer liners Other liners

Class 150 (lb‑ft) Class 300 (lb‑ft) Class 150 (lb‑ft) Class 300 (lb‑ft)

040 4 inch (100 mm) 26 50 17 32

050 5 inch (125 mm) 36 60 25 35

060 6 inch (150 mm) 45 50 30 37

080 8 inch (200 mm) 60 82 42 55

100 10 inch (250 mm) 55 80 40 70

120 12 inch (300 mm) 65 125 55 105

140 14 inch (350 mm) 85 110 70 95

160 16 inch (400 mm) 85 160 65 140

180 18 inch (450 mm) 120 170 95 150

200 20 inch (500 mm) 110 175 90 150

240 24 inch (600 mm) 165 280 140 250

300 30 inch (750 mm) 195 415 165 375

360 36 inch (900 mm) 280 575 245 525

18 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 19

Reference manual Sensor Installation

00809-0500-4750 May 2019

Table 3-3: Suggested flange bolt torque values for Rosemount 8750W sensors with fluoropolymer liners (EN 1092-1)

Size code

005 0.5 inch (15 mm) N/A N/A N/A 10

010 1 inch (25 mm) N/A N/A N/A 20

015 1.5 inch (40 mm) N/A N/A N/A 50

020 2 inch (50 mm) N/A 60 N/A 60

025 2.5 inch (65 mm) N/A 50 N/A 50

030 3 inch (80 mm) N/A 50 N/A 50

040 4 inch (100 mm) N/A 50 N/A 70

050 5.0 inch (125 mm) N/A 70 N/A 100

060 6 inch (150mm) N/A 90 N/A 130

080 8 inch (200 mm) 130 90 130 170

100 10 inch (250 mm) 100 130 190 250

120 12 inch (300 mm) 120 170 190 270

140 14 inch (350 mm) 160 220 320 410

160 16 inch (400 mm) 220 280 410 610

180 18 inch (450 mm) 190 340 330 420

Line size Fluoropolymer liners (in Newton-meters)

PN 10 PN 16 PN 25 PN 40

200 20 inch (500 mm) 230 380 440 520

240 24 inch (600 mm) 290 570 590 850

Table 3-4: Suggested flange bolt torque values for Rosemount 8750W sensors with non-fluoropolymer liners (EN 1092-1)

Size code

005 0.5 inch (15 mm) N/A N/A N/A 20

010 1 inch (25 mm) N/A N/A N/A 30

015 1.5 inch (40 mm) N/A N/A N/A 40

020 2 inch (50 mm) N/A 30 N/A 30

025 2.5 inch (65 mm) N/A 35 N/A 35

030 3 inch (80 mm) N/A 30 N/A 30

040 4 inch (100 mm) N/A 40 N/A 50

050 5.0 inch (125 mm) N/A 50 N/A 70

060 6 inch (150mm) N/A 60 N/A 90

080 8 inch (200 mm) 90 60 90 110

Line size Non-fluoropolymer liners (in Newton-meters)

PN 10 PN 16 PN 25 PN 40

Reference manual 19

Page 20

Sensor Installation Reference manual

May 2019 00809-0500-4750

Table 3-4: Suggested flange bolt torque values for Rosemount 8750W sensors with non-fluoropolymer liners (EN 1092-1) (continued)

Size code

100 10 inch (250 mm) 70 80 130 170

120 12 inch (300 mm) 80 110 130 180

140 14 inch (350 mm) 110 150 210 288

160 16 inch (400 mm) 150 190 280 410

180 18 inch (450 mm) 130 230 220 280

200 20 inch (500 mm) 150 260 300 350

240 24 inch (600 mm) 200 380 390 560

Line size Non-fluoropolymer liners (in Newton-meters)

PN 10 PN 16 PN 25 PN 40

Table 3-5: Suggested flange bolt torque values for Rosemount 8750W with fluoropolymer liners (AWWA C207)

Size code

300 30 inch (750 mm) 195 195 195

360 36 inch (900 mm) 280 280 280

Line size Class D (lb‑ft) Class E (lb‑ft) Class F (lb‑ft)

Table 3-6: Suggested flange bolt torque values for Rosemount 8750W with non-fluoropolymer liners (AWWA C207)

Size code

300 30 inch (750 mm) 165 165 165

360 36 inch (900 mm) 245 245 245

400 40 inch (1000 mm) 757 757 N/A

420 42 inch (1050 mm) 839 839 N/A

480 48 inch (1200 mm) 872 872 N/A

Line size Class D (lb‑ft) Class E (lb‑ft) Class F (lb‑ft)

3.4 Process reference connection

The figures shown in this section illustrate best practice installations for process reference connections only. For installations in conductive, unlined pipe it may be acceptable to use one ground ring or one lining protector to establish a process reference connection. 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.

Use Table 3-7 to determine which process reference option to follow for proper installation.

20 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 21

Reference manual Sensor Installation

00809-0500-4750 May 2019

Table 3-7: Process reference options

Type of pipe Grounding

straps

Conductive unlined pipe

Conductive lined pipe

Non-conductive pipe

See Figure 3-7 See Figure 3-8 See Figure 3-10 See Figure 3-8

Insufficient grounding

Grounding rings Reference

electrode

See Figure 3-8 See Figure 3-7 See Figure 3-8

See Figure 3-9 Not

recommended

Lining protectors

See Figure 3-9

Note

For line sizes 10-inch and larger the ground strap may come attached to the sensor body near the flange. See Figure 3-11.

Figure 3-7: Grounding straps in conductive unlined pipe or reference electrode in lined pipe

Reference manual 21

Page 22

Sensor Installation Reference manual

May 2019 00809-0500-4750

Figure 3-8: Grounding with grounding rings or lining protectors in conductive pipe

A. Grounding rings or lining protectors

Figure 3-9: Grounding with grounding rings or lining protectors in non-conductive pipe

A. Grounding rings or lining protectors

22 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 23

Reference manual Sensor Installation

00809-0500-4750 May 2019

Figure 3-10: Grounding with reference electrode in conductive unlined pipe

Figure 3-11: Grounding for line sizes 10-in. and larger

Reference manual 23

Page 24

Sensor Installation Reference manual

May 2019 00809-0500-4750

24 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 25

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

4 Remote Transmitter Installation

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:

• Set the hardware switches if necessary

• Consider mechanical, electrical, and environmental requirements

Note

Refer to Product Specifications for more detailed requirements.

Hardware switches

The electronics board is equipped with two user-selectable hardware switches. These switches set the Simulate Enable and Transmitter Security. The standard configuration for these switches when shipped from the factory are as follows:

Table 4-1: Hardware switch default settings

Setting Factory configuration

Simulate enable Off

Transmitter security Off

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 Hardware switches.

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

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).

Reference manual 25

Page 26

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

Figure 4-1: Field mount transmitter dimensional drawing

7.49

[190,0]

6.48

[164,6]

3.07

[78,0]

8.81

[224,0]

10.5 [130]

5.0

[128]

1.94

[49,0]

3.00

[76,2]

1.97

[50,0]

A. Conduit entry

½–14 NPT or M20

B. LOI cover

C. Mounting screws

6.48

[164,6]

2.71

[76,2]

2.71 [68,8]

11.02

[280.0]

5.0

[128]

5.82

[148,0]

26 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 27

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

Figure 4-2: Wall mount transmitter dimensional drawing

9.0

2.81

[229]

[71]

3.12 [79]

3.51 [89]

11.15 [283]

12.03 [306]

17.68 [449]

1.94 [49]

1.70 [43]

1.94 [49]

11.36 [289]

1.59 [40]

3.90 [99]

7.80

[198]

A. Conduit entry, 1/2-14 NPT (4 places)

B. Ground lug C. Lower cover opens for electrical connections D. Standard electronics cover

Note

Dimensions are in inches [Millimeters]

Reference manual 27

Page 28

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

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.

Table 4-2: Electrical data

Wall mount and field mount transmitter

Power input AC power:

90–250VAC, 0.45A, 40VA

Standard DC power: 12–42VDC, 1.2A, 15W

Fieldbus Fieldbus segment requires a separate 9VDC to

32VDC power supply with a power conditioner to decouple the power supply output from the fieldbus wiring segment.

Environmental considerations

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

• High-vibration lines with integrally mounted transmitters

• 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.

4.2 Transmitter symbols

Caution symbol — check product documentation for details

Protective conductor (grounding) terminal

4.3 Mounting

Remote-mount transmitters are shipped wth a mounting bracket for use on a 2-in. pipe or a flat surface.

28 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 29

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

Figure 4-3: Rosemount 8750W field mount transmitter mounting hardware

A. U-bolt

B. Mounting bracket C. Transmitter D. Fasteners (example configuration)

Figure 4-4: Rosemount 8750W wall mount transmitter mounting hardware

A. U-bolt

B. Saddle clamp C. Fasteners

Reference manual 29

Page 30

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

1. Assemble the hardware as needed to accommodate the mounting configuration.

2. Secure the transmitter to the mounting hardware.

For field mount style transmitters, the LOI/Display can be rotated in 90 degree increments up to 180 degrees if desired. Do not rotate more than 180 degrees in any one direction.

4.4 Wiring

4.4.1 Conduit entries and connections

Transmitter conduit entry ports can be ordered with ½"-14NPT or M20 female threaded connections. 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.

• 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 4-5 and Figure 4-6.

• 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™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 31

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

Figure 4-5: Best practice conduit preparation (field mount)

A. Power

B. Output C. Coil D. Electrode

E. Safety ground

Reference manual 31

Page 32

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

Figure 4-6: Best practice conduit preparation (wall mount)

4.4.3

A. Safety ground

B. Power C. Coil D. Output

E. Electrode

C D E

Sensor to transmitter wiring

Integral mount transmitters

Integral mount transmitters ordered with a sensor will be shipped assembled and wired at the factory using an interconnecting cable. Use only the factory supplied cable provided with the instrument. For replacement transmitters use the existing interconnecting cable from the original assembly. Replacement cables, if applicable, are available (see Figure

4-7).

Figure 4-7: Replacement interconnecting cables

A. Socket module 08732-CSKT-0001

B. IMS cable 08732-CSKT-0004

32 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 33

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

Remote mount transmitters

Cable 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

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

Cable kit # Description Individual cable Alpha p/n

08732-0065-0001 (feet)

08732-0065-0002 (meters)

08732-0065-0003 (feet)

08732-0065-0004 (meters)

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

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

Cable kit # Description Individual cable Alpha p/n

08732-0065-1001 (feet)

08732-0065-1002 (meters)

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

Coil Electrode

Not available Not available

08732-0065-1003 (feet)

08732-0065-1004 (meters)

Reference manual 33

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

Coil Intrinsically Safe Blue

Electrode

Coil Intrinsically Safe Blue

Electrode

Not available Not available

Page 34

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

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

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)

Cable requirements

Shielded twisted pairs or triads must be used. For installations using the individual coil drive and electrode cable, see Figure 4-8. 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 4-9. Combination cable lengths should be limited to less than 330 feet (100 m).

34 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 35

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

Figure 4-8: Individual component cables

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

17 18 19

• 2 = Blue

• 3 = Drain

• 17 = Black

• 18 = Yellow

• 19 = White

Reference manual 35

Page 36

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

Figure 4-9: Combination coil and electrode cable

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 4-10. 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.

36 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 37

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

Figure 4-10: Cable ends

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).

Remote junction box terminal blocks

Figure 4-11: Remote junction box views (field mount)

A. Sensor

B. Transmitter

Reference manual 37

Page 38

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

Figure 4-12: Remote junction box views (wall mount)

A. Sensor

B. Transmitter

Table 4-6: Sensor/transmitter wiring

Wire color Sensor terminal Transmitter terminal

Red 1 1

Blue 2 2

Coil drain 3 or float 3

Black 17 17

Yellow 18 18

White 19 19

Electrode drain

or float

Note

For hazardous locations, refer to Product Certifications.

38 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 39

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

4.4.4 Installation and wiring drawings

Reference manual 39

Page 40

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

40 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 41

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

Reference manual 41

Page 42

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

42 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 43

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

4.4.5 Power and fieldbus terminal blocks (field mount)

Remove the back cover of the transmitter to access the terminal block.

Note

To connect pulse output, see Connect pulse output.

Figure 4-13: Terminal blocks (field mount)

A. AC version

B. DC version

Table 4-7: Power and I/O terminals (field mount transmitter)

Terminal number AC version DC version

1 D1 / B D1 / B

2 D0 / A D0 / A

3 Pulse (–) Pulse (–)

4 Pulse (+) Pulse (+)

5 Not used Not used

6 Not used Not used

7 Not used Not used

8 Not used Not used

9 AC (Neutral)/L2 DC (–)

10 AC L1 DC (+)

4.4.6 Power and fieldbus terminal blocks (wall mount)

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

Note

To connect pulse output, see Connect pulse output.

Reference manual 43

Page 44

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

Figure 4-14: Terminal blocks (wall mount)

N 1 2 9 10 5 6 19 18

L1 3 11 12 7 8 17

Table 4-8: Power and fieldbus terminals (wall mount transmitter)

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 (–)

7 D0 / A D0 / A

8 D1 / B D1 / B

9 Not used Not used

10 Not used Not used

11 Not used Not used

12 Not used Not used

17 Not used Not used

18 Not used Not used

19 Not used Not used

N AC (Neutral)/L2 DC (–)

L1 AC L1 DC (+)

44 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 45

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

4.4.7 Powering the transmitter

Before connecting power to the transmitter, be sure to have the necessary electrical supplies and required power source:

• The AC powered transmitter requires 90–250V AC (50/60Hz).

• The DC powered transmitter requires 12–42V DC.

Wire the transmitter according to national, local, and plant electrical requirements.

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 top 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

Figure 4-15: AC current requirements

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)

Figure 4-16: Apparent power

22 20

110 130 150 170B190 210 230 250

A. Apparent power (VA)

B. Power supply (VAC)

Reference manual 45

Page 46

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

DC power supply requirements

Standard DC units powered by 12VDC power supply may draw up to 1.2A 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

Figure 4-17: DC current requirements

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2 12

17 22 27

32 37 42

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.

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 4-9.

Table 4-9: Fuse requirements

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

Power terminals (field mount transmitter)

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

46 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 47

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

• Connect AC Neutral to terminal 9 (AC N/L2) and AC Line to terminal 10 (AC/L1).

For DC powered transmitter:

• Connect negative to terminal 9 (DC -) and positive to terminal 10 (DC +).

• DC powered units may draw up to 1.2A.

Power terminals (wall mount transmitter)

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.

Cover jam screw (field mount transmitter)

For flow meters shipped with a cover jam screw, the screw should be installed after the instrument has been wired and powered up. Follow these steps to install the cover jam screw:

1. Verify the cover jam screw is completely threaded into the housing.

2. Install the housing cover and verify the cover is tight against the housing.

3. Using a 2.5 mm hex wrench, loosen the jam screw until it contacts the transmitter cover.

4. Turn the jam screw an additional ½ turn counterclockwise to secure the cover.

Note

Application of excessive torque may strip the threads.

5. Verify the cover cannot be removed.

Covers (wall mount transmitter)

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.

3. Verify the lower door is secure.

Reference manual 47

Page 48

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

4.4.8 Fieldbus wiring

Transmitter communication input

The FOUNDATION fieldbus communication requires a minimum of 9VDC and a maximum of 32VDC at the transmitter communication terminals. Do not exceed 32VDC at the transmitter communication terminals. Do not apply AC line voltage to the transmitter communication terminals. Improper supply voltage can damage the transmitter.

Field wiring

Power independent of the transmitter power supply must be supplied for FOUNDATION fieldbus communications. Use shielded, twisted pair for best results. In order to get maximum performance in new applications, twisted pair cable specifically designed for fieldbus communications should be used. The number of devices on a fieldbus segment is limited by the power supply voltage, the resistance of the cable, and the amount of current drawn by each device. See Table 4-10 for cable specifications.

Table 4-10: Ideal cable specifications for fieldbus wiring

Characteristic Ideal specification

Impedance 100 Ohms ± 20% at 31.25 kHz

Wire size 18 AWG (0.8 mm2)

Shield coverage 90%

Attenuation 3 db/km

Capacitive unbalance 2 nF/km

Power conditioning

Each fieldbus power supply requires a power conditioner to decouple the power supply output from the fieldbus wiring segment.

48 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 49

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

Figure 4-18: Power connections

A B

A. Power conditioner

B. Terminators C. Fieldbus segment D. Power supply

E. Trunk

F. Spurs G. Control room H. FOUNDATION fieldbus host

I. Devices 1 through 11

Transmitter wiring connection

• Use wire terminals 1 and 2 for field mount transmitters.

• Use wire terminals 7 and 8 for wall mount transmitters.

• The transmitter fieldbus connection is polarity insensitive.

Reference manual 49

Page 50

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

Figure 4-19: Fieldbus wiring (field mount)

A. Fieldbus terminal (2)

B. Fieldbus terminal (1)

Figure 4-20: Fieldbus wiring (wall mount)

B A

A. Fieldbus terminal (7) D0 / A

B. Fieldbus terminal (8) D1 / B

50 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 51

Reference manual Remote Transmitter Installation

00809-0500-4750 May 2019

4.5 Cover jam screw

For flow meters shipped with a cover jam screw, the screw should be installed after the instrument has been wired and powered up. Follow these steps to install the cover jam screw:

1. Verify the cover jam screw is completely threaded into the housing.

2. Install the housing cover and verify the cover is tight against the housing.

3. Using a 2.5 mm hex wrench, loosen the jam screw until it contacts the transmitter

cover.

4. Turn the jam screw an additional ½ turn counterclockwise to secure the cover.

Note

Application of excessive torque may strip the threads.

5. Verify the cover cannot be removed.

Reference manual 51

Page 52

Remote Transmitter Installation Reference manual

May 2019 00809-0500-4750

52 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 53

Reference manual Basic Configuration

00809-0500-4750 May 2019

5 Basic Configuration

Once the magnetic flowmeter is installed and power has been supplied, the transmitter basic setup parameters must be configured with a FOUNDATION fieldbus host (See

Communication methods). Configuration settings are saved in nonvolatile memory within

the transmitter.

The standard transmitter configuration, without Option Code C1, Custom Configuration, is shipped with the following parameters:

• Engineering Units: ft/s

• Sensor Size: 3-in.

• Sensor Calibration Number: 100000501000000

Descriptions of more advanced functions are included in Advanced Configuration

Functionality.

5.1 Communication methods

You will see references to the transmitter "LOI" (Local Operator Interface) in the fieldbus parameter names and on configuration screens and tools. However this type of display povides only one-way communication from the transmitter to the user for process variables, status, and diagnostics.

All configuration and other communication from the user to the transmitter requires one of two types of FOUNDATION fieldbus host:

• On an enhanced FF host, the transmitter parameters are displayed either in the form of a

menu tree (for example, a Field Communicator) or in the form of tabbed display screens (for example, the AMS Intelligent Device Manager with DeltaV™ System). Both the menu tree and tabbed display screens are provided as part of the unique Device Description files specific to this transmitter.

• A basic FF host displays the transmitter parameters in the form of a list under the

Resource block and transducer blocks.

This document contains information for both types of host.

Note

Fieldbus configuration tools and hosts from some vendors may interpret device information differently than others. As a result, you may notice slight differences in the paths, locations, or parameter names on your host or configuration tool.

5.2 FOUNDATION fieldbus configuration

Assigning physical device tag and node address

The transmitter is shipped with a blank physical device tag and a temporary address to allow a host to automatically assign an address and a physical device tag. If the physical device tag or address need to be changed, use the features of the configuration tool. The tools do the following:

Reference manual 53

Page 54

Basic Configuration Reference manual

May 2019 00809-0500-4750

• Change the physical device tag to a new value.

• Change the address to a new address.

When the transmitter is at a temporary address, only the physical device tag and address can be changed or written to. The resource, transducer, and function blocks are all disabled.

Flow-specific AI block configuration

The factory configuration of the four Analog Input function blocks ("AI blocks") is the following:

• One of them is configured for flow: — CHANNEL parameter is set to 1

— XD_SCALE parameters are set to:

• EU_100: -39.37

• EU_0: -39.37

• UNITS_INDEX: ft/sec

• DECIMAL: 2

— L_TYPE parameter is set to Direct

• The other three are configured as Totalizer A, Totalizer B, and Totalizer C

For more information:

• For totalizer configuration, see Totalizer.

• For more information about AI block parameters, see Analog Input (AI) Function Block.

• For additional AI block configuration and troubleshooting, refer to FOUNDATION™ Fieldbus

Function Blocks, document 00809-0100-4783.

If you need to reconfigure the flow measurement AI block:

1. Set the CHANNEL parameter to 1 for flow.

2. Set the XD_SCALE parameters (EU_100, EU_0, UNITS_INDEX, and DECIMAL) to the

desired measurement scale from the flow measurement transducer.

3. Set the L_TYPE parameter to the desired linearization method, and then if

necessary, set the OUT_SCALE parameters:

• For direct measurement (the AI block output is the same as the XD_SCALE), set

L_TYPE to Direct. This completes the channel configuration.

• For indirect measurement (the AI block output is scaled from the XD_SCALE), set

L_TYPE to Indirect, and then set the OUT_SCALE parameters (EU_100, EU_0, UNITS_INDEX, and DECIMAL) to the scale required by the control/monitoring system.

General, flow-specific block configuration

In general, only the transducer block and AI blocks have configurations for flow-specific parameters. All other function blocks are configured by linking the AI blocks to other blocks to be used for control and/or monitoring applications.

54 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 55

Reference manual Basic Configuration

00809-0500-4750 May 2019

5.3 Basic Setup

Descriptive tag

Enhanced FF host Configure > Device Information > Description

Basic FF host TB > TAG_DESC (OD Index 2)

The descriptive tag fieldbus parameter permits you to assign a 32 character identifier to a transmitter to distinguish it from others in your system. It is not the same as the physical device tag (see Assigning physical device tag and node address), which is used by the control scheme.

Flow units

Flow units must be configured from the AI block configured for flow measurement. See

FOUNDATION fieldbus configuration.

Line size

Enhanced FF host

Basic FF host TB > TUBE_SIZE (OD Index 36)

Configure > Basic Setup

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

Calibration number

Enhanced FF host

Basic FF host TB > FLOW_TUBE_CAL_NUM (OD Index 35)

Configure > Basic Setup

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

Reference manual 55

Page 56

Basic Configuration Reference manual

May 2019 00809-0500-4750

56 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 57

Reference manual Advanced installation details

00809-0500-4750 May 2019

6 Advanced installation details

6.1 Hardware switches

The electronics are equipped with two user-selectable hardware switches. These switches set the Transmitter Security and Simulate Enable.

6.1.1 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.

6.1.2

6.1.3

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.

Simulate mode

The Simulate Mode switch is used in conjunction with the Analog Input (AI) function block. The switch is used to enable flow measurement and diagnostic alert simulation. To enable the simulate enable feature, the switch must transition from OFF to ON after power is applied to the transmitter, preventing the transmitter from being accidentally left in simulate mode. Simulate Mode is set in the OFF position when shipped from the factory.

Changing hardware switch settings (field mount)

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.

Reference manual 57

Page 58

Advanced installation details Reference manual

May 2019 00809-0500-4750

Figure 6-1: Electronics Stack and Hardware Switches

6.1.4

1. Place the control loop into manual control.

2. Disconnect power to the transmitter

3. Remove the electronics compartment cover.

If the cover has a cover jam screw, this must be loosened prior to removal of the cover.

4. Remove the LOI/Display, if applicable.

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

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

7. Replace the LOI/Display, if applicable.

8. Replace the electronics compartment cover.

If the cover has a cover jam screw, this must be tightened to comply with installation requirements. See Cover jam screw for details on the cover jam screw.

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

10. Return the control loop to automatic control.

Changing hardware switch settings (wall mount)

Note

58 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 59

Reference manual Advanced installation details

00809-0500-4750 May 2019

Figure 6-2: Electronics stack and hardware switches

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 6-2 ).

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

6. Close the electronics compartment cover. See Powering the transmitter 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.

Reference manual 59

Page 60

Advanced installation details Reference manual

May 2019 00809-0500-4750

6.2 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 transmitter supports a pulse output with an external power supply that meets the following requirements:

• Supply voltage: 5 to 24 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:

Supply voltage Resistance vs cable length

5 VDC See Figure 6-3

12 VDC See Figure 6-4

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: 5,000 Hz

• FET switch closure: solid state switch

60 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 61

Reference manual Advanced installation details

00809-0500-4750 May 2019

Figure 6-3: 5 VDC Supply

A. Resistance (Ω)

B. Cable length (feet)

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).

Figure 6-4: 12 VDC Supply

A. Resistance (Ω)

B. Cable length (feet)

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 61

Page 62

Advanced installation details Reference manual

May 2019 00809-0500-4750

Figure 6-5: 24 VDC Supply

6.2.1

A. Resistance (Ω)

B. Cable length (feet)

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).

Connecting an external 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.

62 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 63

Reference manual Advanced installation details

00809-0500-4750 May 2019

Figure 6-6: Connecting an electromechanical totalizer/counter with external power supply (field mount)

B C

A. Schematic showing FET between terminal 3 and 4

B. 5–24 VDC power supply

C. Electro-mechanical counter

Figure 6-7: Connecting an electromechanical totalizer/counter with external power supply (wall mount)

+ +

A. Schematic showing FET between terminal 5 and 6

B. Electro-mechanical counter

C. 5–24 VDC power supply

Reference manual 63

Page 64

Advanced installation details Reference manual

May 2019 00809-0500-4750

Figure 6-8: Connecting to an electronic totalizer/counter with external power supply (field mount)

A. Schematic showing FET between terminal 3 and 4

B. Electronic counter

C. 5–24 VDC power supply

64 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 65

Reference manual Advanced installation details

00809-0500-4750 May 2019

Figure 6-9: Connecting to an electronic totalizer/counter with external power supply (wall mount)

A. Schematic showing FET between terminal 5 and 6

B. Electronic counter

C. 5–24 VDC power supply

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 3.

5. Connect - DC to terminal 6.

6. Connect + DC to terminal 4.

7. Connect + DC to terminal 5.

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, M3, 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.

Reference manual 65

Page 66

Advanced installation details Reference manual

May 2019 00809-0500-4750

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 6-10):

• 8705 with option code M0 - 8705xxxxxxxxM0

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

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

Figure 6-10: Standard Housing Configuration (8705 Shown)

6.3.2

A. Conduit connection

B. No relief port (welded shut)

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 6-11).

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.

66 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 67

Reference manual Advanced installation details

00809-0500-4750 May 2019

Figure 6-11: 8705 with M1 Coil Housing Configuration and PRV

6.3.3

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).

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 6-12).

• 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 6-13).

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.

Reference manual 67

Page 68

Advanced installation details Reference manual

May 2019 00809-0500-4750

Figure 6-12: 8705 with M2 Coil Housing Configuration

A. 2x fused glass seal

B. 2x sealed electrode compartment

6.3.4

Figure 6-13: 8705 with M4 Coil Housing Configuration

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).

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

68 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 69

Reference manual Advanced installation details

00809-0500-4750 May 2019

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

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,

Reference manual 69

Page 70

Advanced installation details Reference manual

May 2019 00809-0500-4750

sensor reliability, and sensor longevity can be improved with careful attention to proper insulation.

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 6-14).

Figure 6-14: Insulating a Rosemount Magnetic Flowmeter for Permeation

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 6-15).

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.

70 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 71

Reference manual Advanced installation details

00809-0500-4750 May 2019

Figure 6-15: Insulating a Rosemount Magnetic Flowmeter for Safety/Plant Standards

A. Process piping

B. Coil housing

C. Insulation

Reference manual 71

Page 72

Advanced installation details Reference manual

May 2019 00809-0500-4750

72 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 73

Reference manual Advanced Configuration Functionality

00809-0500-4750 May 2019

7 Advanced Configuration

Functionality

7.1 Introduction

The transmitter features a full range of software functions, transmitter configurations, and diagnostic settings. These features can be accessed and configured using a basic or enhanced FF host.

7.2 Configure outputs

7.2.1 Pulse output

Enhanced FF host

Basic FF host TB > PULSE CONFIGURATION (OD Index #38)

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

Pulse scaling

Enhanced FF host

Basic FF host TB > PULSE CONFIGURATION (OD Index #38)

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

39.37 ft/sec (12 m/s) to 5000 Hz at 1 ft/sec (0.3 m/s).

Note

The maximum pulse scaling frequency for transmitters with an intrinsically safe output is 5000 Hz.

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.

Pulse Output

Pulse Output > Factor

FACTOR

Note

The pulse output scaling is designed to operate between 0 and 5000 Hz. The minimum conversion factor value is found by dividing the minimum span (in units of volume per second) by 5000 Hz.

Reference manual 73

Page 74

Advanced Configuration Functionality Reference manual

May 2019 00809-0500-4750

When selecting pulse output scaling, the maximum pulse rate is 5000 Hz. With the 10 percent over range capability, the absolute limit is 5500 Hz. For example, if you want the transmitter to pulse every time 0.01 gallons pass through the sensor, and the flow rate is 5000 gal/min, you will exceed the 5000 Hz full-scale limit:

5000 gal

1 min

(60 sec)

××

1 pulse

0.01 gal

= 8,333.3 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

Enhanced FF host

Basic FF host TB > PULSE CONFIGURATION (OD Index #38)

Pulse Output > Factor Units

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.

Table 7-1: Pulse factor volume units

Fieldbus unit code Units

1048 US Gallons

1038 Liters

1049 Imperial gallons

1034 Cubic meters

1051 Barrels (42 gallons)

1042 Cubic feet

1036 Cubic centimeters

1052 Barrels (31 gallons)

Table 7-2: Pulse factor mass units

Fieldbus unit code Units

1088 Kilograms

1092 Metric tons

1094 Pounds

1095 Short tons

Table 7-3: Pulse factor other units

Fieldbus unit code Units

1018 Feet (default)

74 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 75

Reference manual Advanced Configuration Functionality

00809-0500-4750 May 2019

Table 7-3: Pulse factor other units (continued)

Fieldbus unit code Units

1010 Meters

Pulse width

Enhanced FF host Pulse Output > Pulse Width

Basic FF host TB > PULSE CONFIGURATION (OD Index #38)

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 7-1). 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.

Figure 7-1: Pulse Output

A. Open

B. Pulse width C. Period D. Closed

Example

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

0.5 ms 1.0 ms

Reference manual 75

Minimum period (50% duty cycle)

Maximum frequency

1 cycle

1.0 ms

200 ms

= 5 Hz

= 1000 Hz

Page 76

Advanced Configuration Functionality Reference manual

May 2019 00809-0500-4750

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 5000 Hz at 10,000 gpm.

Pulse Scaling =

Pulse Scaling = 0.0333

1 pulse = 0.0333 gal

Flow Rate (gpm)

sec

(60 ×)

min

10,000 gpm

sec

(60 ×)

min

gal

pulse

(frequency)

(5000 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

gal

pulse

gal

pulse

The upper range value (20mA) is 3000 gpm. To obtain the highest resolution of the pulse output, 5000 Hz is scaled to the full scale analog reading.

Frequency =

Pulse Scaling =

Pulse Scaling = 0.01

Flow Rate (gpm)

sec min

3,000 gpm

sec

(60 ×)

min

pulse

pulse scaling

gal

(60 ×) )(

1 pulse = 0.01 gal

5000 Hz

gal

pulse

Fixed frequency test mode

Enhanced FF host

Basic FF host TB > PULSE CONFIGURATION (OD Index #38)

76 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Pulse Output > Fixed Frequency Mode

FIXED_FREQUENCY

Page 77

Reference manual Advanced Configuration Functionality

00809-0500-4750 May 2019

Fixed frequency test mode generates a constant, fixed-frequency pulse output. This can be useful for testing frequency input devices or control loop configurations.

Table 7-4: Fixed frequency test mode

Fixed frequency parameter value

0 Fixed frequency test mode disabled

1 to 5500 (Hz) Fixed frequency test mode enabled, pulse output set to

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

7.2.2 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.

Mode

parameter value.

View Totals

Enhanced FF host

Basic FF host TB > TOTAL_A_VALUE (OD Index #29)

Overview > View Totalizers

TB > TOTAL_B_VALUE (OD Index #30)

TB > TOTAL_C_VALUE (OD Index #31)

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

Configure totalizers

Enhanced FF host

Basic FF host TB > TOTAL_A_CONFIG (OD Index #43)

Reference manual 77

Totalizers Control

TB > TOTAL_B_CONFIG (OD Index #44)

TB > TOTAL_C_CONFIG (OD Index #45)

Page 78

Advanced Configuration Functionality Reference manual

May 2019 00809-0500-4750

Start, stop, reset all totalizers

Enhanced FF host Totalizers Control > Start/Stop Totalizers

Totalizers Control > Reset All Totals

Basic FF host See below.

Totalizer funtion Fieldbus parameter (Index #) Parameter value

Start all totalizers

TOTALIZER CONTROL: ENABLE_ALL (Index #42)

Stop all totalizers

Reset all totalizers

TOTALIZER CONTROL: ENABLE_ALL(Index #42)

TOTALIZER CONTROL: RESET_ALL (Index #42)

Note

If an individual totalizer is configured as non-resettable, reset all totalizers will not affect that totalizer.

Totalizer direction

Enhanced FF host

Basic FF host TB > TOTAL_A_CONFIG (OD Index #43)

Totalizers Control > Totalizer (A, B, C) > Flow Direction

TB > TOTAL_B_CONFIG (OD Index #44)

TB > TOTAL_C_CONFIG (OD Index #45) FLOW_DIRECTION

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

FLOW_DIRECTION parameter value

1 Net

Totalizer direction

2 Forward only

3 Reverse only

Totalizer units

Enhanced FF host

Basic FF host TB > TOTAL_A_CONFIG (OD Index #43)

Totalizers Control > Totalizer (A, B, C) > Units

TB > TOTAL_B_CONFIG (OD Index #44)

TB > TOTAL_C_CONFIG (OD Index #45) UNITS

Configure the units for totalizers.

78 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 79

Reference manual Advanced Configuration Functionality

00809-0500-4750 May 2019

Table 7-5: Volume units

Fieldbus unit code Units

1048 US Gallons

1038 Liters

1049 Imperial gallons

1034 Cubic meters

1051 Barrels (42 gallons)

1042 Cubic feet

1036 Cubic centimeters

1052 Barrels (31 gallons)

Table 7-6: Mass units

Fieldbus unit code Units

1088 Kilograms

1092 Metric tons

1094 Pounds

1095 Short tons

Table 7-7: Other units

Fieldbus unit code Units

1018 Feet (default)

1010 Meters

Reset configuration

Enhanced FF host

Basic FF host TB > TOTAL_A_CONFIG (OD Index #43)

Totalizers Control > Totalizer (A, B, C) > Reset Options

TB > TOTAL_B_CONFIG (OD Index #44)

TB > TOTAL_C_CONFIG (OD Index #45) ALLOW_RESET

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

ALLOW_RESET parameter value

Reset options

1 Reset not allowed

2 Reset allowed

Reset individual totalizer

Enhanced FF host

Reference manual 79

Totalizers Control > Reset Totalizer (A, B, C)

Page 80

Advanced Configuration Functionality Reference manual

May 2019 00809-0500-4750

Basic FF host TB > TOTAL_A_CONFIG (OD Index #43)

TB > TOTAL_B_CONFIG (OD Index #44)

TB > TOTAL_C_CONFIG (OD Index #45) RESET

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

RESET parameter value Reset options

1 Reset totalizer

7.3 Configure LOI/Display

7.3.1 Flow and totalizer display

Enhanced FF host LOI Flow Display Timing > Flow Rate Time

LOI Flow Display Timing > Totalizer (A, B, C) Time

7.3.2

Basic FF host TB > LOI_CONFIGURATION (OD Index #53)

PV_LOI_TIME (Process variable)

TA_LOI_TIME (Totalizer A)

TB_LOI_TIME (Totalizer B)

TC_LOI_TIME (Totalizer C)

The Process Variable and each of the three totalizer values can be shown in a scrolling cycle for zero to 10 seconds based on the settings selected in the LOI Configuration parameter. For basic FF hosts, the integer value of the parameter indicates the number of seconds the PV or totalizer value will be shown. To prevent the PV or a totalizer from appearing, set its value to zero.

• The default setting for the PV is 3 seconds

• The default setting for all totalizers is 0 seconds

Note

If all timing values are set to zero, the LOI/Display will default to showing only the PV.

Language

Enhanced FF host Display Setup > Local Display Language

Basic FF host TB > LOI_CONFIGURATION (OD Index #53)

LANGUAGE

Use language to configure the display language shown on the LOI/Display.

80 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 81

Reference manual Advanced Configuration Functionality

00809-0500-4750 May 2019

Table 7-8: Basic FF host languages

Parameter value Language

1 English

2 Spanish

3 German

4 French

5 Portuguese

7.3.3 Backlight control

Enhanced FF host Display Setup > Backlight

Basic FF host TB > LOI_CONFIGURATION (OD Index #53)

BACKLIGHT

The LOI/Display backlight paramter determines whether or not the backlight is always on or always off.

Table 7-9: BACKLIGHT parameter

Parameter value Backlight control

0 OFF

5 ON

7.4 Signal processing

The transmitter contains several advanced functions that can be used to stabilize erratic outputs caused by process noise. The signal processing menu contains this functionality.

If the 37 Hz coil drive mode has been set, and the output is still unstable, the damping and signal processing function should be used. It is important to set the coil drive mode to 37 Hz first, so the loop response time is not increased.

The transmitter provides for a very easy and straightforward start-up, and also incorporates the capability to deal with difficult applications that have previously manifested themselves in a noisy output signal. In addition to selecting a higher coil drive frequency (37 Hz vs. 5 Hz) to isolate the flow signal from the process noise, the microprocessor can actually scrutinize each input based on three user-defined parameters to reject the noise specific to the application.

See Digital Signal Processing for the detailed description of how the signal processing works.

7.4.1

Reference manual 81

PV (flow) damping

Enhanced FF host Signal Processing > Process Data > PV Damping

Basic FF host TB > DAMPING_CONSTANT (OD Index #32)

Page 82

Advanced Configuration Functionality Reference manual

May 2019 00809-0500-4750

Primary variable damping allows selection of a response time, in seconds, to a step change in flow rate. It is most often used to smooth fluctuations in output.

7.4.2 Process density

Enhanced FF host Signal Processing > Process Data > Density

Basic FF host TB > DENSITY_CONSTANT (OD Index #34)

TB > DENSITY_CONSTANT_UNITS (OD Index #33)

Use the process density value to convert from a volumetric flow rate to a mass flow rate using the following equation:

Qm = Qv x p

Where:

Qm is the mass flow rate

Qv is the volumetric flow rate, and

p is the fluid density

Table 7-10: DENSITY_CONSTANT_UNITS parameter

Parameter value Description

1107 Pounds per cubic foot (lb/ft3)

1097 Kilograms per cubic meter (kg/m3)

7.4.3 Low flow cutoff

Enhanced FF host Signal Processing > Operation > Low Flow Cutoff

Basic FF host TB > LOW_FLOW_CUTOFF (OD Index #49)

Low flow cutoff allows the user to set a low flow limit to be specified. The flow reading is driven to zero for flow rates below the set point. The low flow cutoff units are the same as the PV units and cannot be changed. The low flow cutoff value applies to both forward and reverse flows.

7.4.4

Reverse flow

Enhanced FF host Signal Processing > Operation > Reverse Flow

Basic FF host TB > REVERSE_FLOW (OD Index #75)

Use reverse flow to enable or disable the transmitter's ability to read flow in the opposite direction of the flow direction arrow (see Flow direction). This may occur when the process has bi-directional flow, or when either the electrode wires or the coil wires are reversed (see Troubleshooting Remote wiring). This also enables the totalizer to count in the reverse direction.

82 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 83

Reference manual Advanced Configuration Functionality

00809-0500-4750 May 2019

Table 7-11: REVERSE_FLOW parameter

Parameter value Operating mode

1 Reverse flow disabled (default)

2 Reverse flow enabled

7.4.5 Coil drive frequency

Enhanced FF host Signal Processing > Coil drive > Coil Drive Frequency

Basic FF host TB > COIL_DRIVE_FREQ > (OD Index #37)

Use coil drive frequency to change the pulse rate of the coils.

• 5 Hz - The standard coil drive frequency is 5 Hz, which is sufficient for nearly all

applications.

• 37 Hz - If the process fluid causes a noisy or unstable output, increase the coil drive

frequency to 37.5 Hz. If the 37 Hz mode is selected, perform the auto zero function for optimum performance.

Note

37 Hz coil drive frequency should not be used for sensor sizes larger than 20-inch.

See Auto zero.

Reference manual 83

Page 84

Advanced Configuration Functionality Reference manual

May 2019 00809-0500-4750

84 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 85

Reference manual Advanced Diagnostics Configuration

00809-0500-4750 May 2019

8 Advanced Diagnostics Configuration

8.1 Introduction

Rosemount magnetic flowmeters provide device diagnostics that detect and warn of abnormal situations throughout the life of the meter—from installation to maintenance and meter verification. With Rosemount magnetic flowmeter diagnostics enabled, plant availability and throughput can be improved, and costs through simplified installation, maintenance and troubleshooting can be reduced.

Table 8-1: Basic diagnostics availability

Diagnostic name Diagnostic category Product capability

Tunable Empty Pipe Process Standard

Electronics Temperature Maintenance Standard

Coil Fault Maintenance Standard

Transmitter Fault Maintenance Standard

Reverse Flow Process Standard

Electrode Saturation Process Standard

Coil Current Maintenance Standard

Coil Power Maintenance Standard

Table 8-2: Advanced diagnostics availability

Diagnostic name Diagnostic category Product capability

High Process Noise Process Suite 1 (DA1)

Grounding and Wiring Fault Installation Suite 1 (DA1)

Coated Electrode Detection Process Suite 1 (DA1)

Commanded Meter Verification Meter Health Suite 2 (DA2)

Continuous Meter Verification Meter Health Suite 2 (DA2)

Options for accessing Rosemount Magmeter Diagnostics

Rosemount Magmeter Diagnostics can be viewed on the LOI/Display, and they can be viewed and accessed using a basic or enhanced FOUNDATION fieldbut host, such as AMS Device Manager.

Access diagnostics through AMS Device Manager

The value of the diagnostics increases significantly when AMS is used. The user will see simplified screen flow and procedures on how to respond to the diagnostics messages.

Reference manual 85

Page 86

Advanced Diagnostics Configuration Reference manual

May 2019 00809-0500-4750

8.2 Licensing and enabling

All advanced diagnostics are licensed by ordering option code DA1, DA2, or both. In the event that a diagnostic option is not ordered, advanced diagnostics can be licensed in the field through the use of a license key. Each transmitter has a unique license key specific to the diagnostic option code. A trial license is also available to enable the advanced diagnostics. This temporary functionality will be automatically disabled after 30-days or when power to the transmitter is cycled, whichever occurs first. This trial code can be used a maximum of three times per transmitter. See the detailed procedures below for entering the license key and enabling the advanced diagnostics. To obtain a permanent or trial license key, contact your local Rosemount representative.

8.2.1 Licensing the diagnostics

1. Power up the transmitter.

2. Verify the software version is 4.4 software or later.

Enhanced FF host

Basic FF host TB > DSP_SOFTWARE_REV_NUM (OD Index #59)

3. Determine the Device ID.

Enhanced FF host

Basic FF host TB > SERIAL_NUMBER (OD Index #115)

4. Obtain a license key from a local Rosemount representative.

5. Enter license key.

Enhanced FF host

Basic FF host TB > LICENSE_KEY (OD Index #82)

License > License Upgrade > Software

License > License Upgrade > Output Board Serial Number

License > License Upgrade > License Key

8.2.2 Enabling the diagnostics

Enhanced FF host Diagnostics > Enabled Diagnostics

Basic FF host TB > DIAGNOSTIC_HANDLING (OD Index #73). See below.

After diagnostics are licensed, they can be enabled or disabled individually.

For Basic FOUNDATION fieldbus hosts, Table 8-3 identifies which bits are associated with each diagnostic function. When the bit is set, the diagnostic is enabled.

Table 8-3: DIAGNOSTIC_HANDLING parameter

Bit Diagnostic function

3 Empty pipe detection

86 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 87

Reference manual Advanced Diagnostics Configuration

00809-0500-4750 May 2019

Table 8-3: DIAGNOSTIC_HANDLING parameter (continued)

Bit Diagnostic function

13 High process noise

15 Grounding/wiring fault

10 Electronics temperature out of range

18 Electrode coating

8.3 Tunable empty pipe detection

The tunable empty pipe detection provides a means of minimizing issues and false readings when the pipe is empty. This is most important in batching applications where the pipe may run empty with some regularity. If the pipe is empty, this diagnostic will activate, set the flow rate to 0, and deliver an alert.

Turning empty pipe on/off

8.3.1

Enhanced FF host

Basic FF host See Enabling the diagnostics.

The tunable empty pipe detection diagnostic can be turned on or off as required by the application. The empty pipe diagnostic is shipped turned “On” by default.

Diagnostics > Enabled Diagnostics > Empty Pipe Detection

Tunable empty pipe parameters

The tunable empty pipe diagnostic has one read-only parameter, and two parameters that can be custom configured to optimize the diagnostic performance.

Empty pipe (EP) value

Enhanced FF host

Basic FF host TB > EP_VALUE (OD Index #56)

This parameter shows the current empty pipe value. This is a read-only value. This number is a unit-less number and is calculated based on multiple installation and process variables such as sensor type, line size, process fluid properties, and wiring. If the empty pipe value exceeds the empty pipe trigger level for a specified number of updates, then the empty pipe diagnostic alert will activate.

Empty pipe (EP) trigger level

Diagnostics > Empty Pipe > Value

Enhanced FF host

Basic FF host TB > EP_TRIG_LEVEL (OD Index #55)

Limits: 3 to 2000

Reference manual 87

Diagnostics > Empty Pipe > Trigger Level

Page 88

Advanced Diagnostics Configuration Reference manual

May 2019 00809-0500-4750

Empty pipe trigger level is the threshold limit that the empty pipe value must exceed before the empty pipe diagnostic alert activates. The default setting from the factory is

100.

Empty pipe (EP) counts

Enhanced FF host Diagnostics > Empty Pipe > Counts

Basic FF host TB > EP_TRIG_COUNTS (OD Index #54)

Limits: 2 to 50

Empty pipe counts is the number of consecutive updates that the transmitter must receive where the empty pipe value exceeds the empty pipe trigger level before the empty pipe diagnostic alert activates. The default setting from the factory is 5.

8.3.2

Optimizing tunable empty pipe

The tunable empty pipe diagnostic is set at the factory to properly diagnose most applications. If this diagnostic activates, the following procedure can be followed to optimize the empty pipe diagnostic for the application.

1. Record the empty pipe value with a full pipe condition.

Full reading = 0.2

2. Record the empty pipe value with an empty pipe condition.

Empty reading = 80.0

3. Set the empty pipe trigger level to a value between the full and empty readings.

For increased sensitivity to empty pipe conditions, set the trigger level to a value closer to the full pipe value.

Set the trigger level to 25.0

4. Set the empty pipe counts to a value corresponding to the desired sensitivity level

for the diagnostic.

For applications with entrained air or potential air slugs, less sensitivity may be desired.

Set the counts to 10

8.4 Electronics temperature

The transmitter continuously monitors the temperature of the internal electronics. If the measured electronics temperature exceeds the operating limits of –40 to 140 °F (–40 to 60 °C) the transmitter will go into alarm and generate an alert.

88 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 89

Reference manual Advanced Diagnostics Configuration

00809-0500-4750 May 2019

8.4.1 Turning electronics temperature on/off

Enhanced FF host Diagnostics > Enabled Diagnostics > Electronics Temperature

Out of Range

Basic FF host See Enabling the diagnostics.

The electronics temperature diagnostic can be turned on or off as required by the application.The electronics temperature diagnostic will be turned on by default.

8.4.2 Electronics temperature parameters

The electronics temperature diagnostic has one read-only parameter. It does not have any configurable parameters.

Enhanced FF host

Basic FF host TB > ELECT_TEMP (OD Index #57)

This parameter shows the current temperature of the electronics. This is a read-only value.

Diagnostics > Electronics Temperature

8.5 Ground/wiring fault detection

The transmitter continuously monitors signal amplitudes over a wide range of frequencies. For the ground/wiring fault detection diagnostic, the transmitter specifically looks at the signal amplitude at frequencies of 50 Hz and 60 Hz which are the common AC cycle frequencies found throughout the world. If the amplitude of the signal at either of these frequencies exceeds 5 mV, that is an indication that there is a ground or wiring issue and that stray electrical signals are getting into the transmitter. The diagnostic alert will activate indicating that the ground and wiring of the installation should be carefully reviewed.

The ground/wiring fault detection diagnostic provides a means of verifying installations are done correctly. If the installation is not wired or grounded properly, this diagnostic will activate and deliver an alert. This diagnostic can also detect if the grounding is lost overtime due to corrosion or another root cause.

8.5.1

Turning ground/wiring fault on/off

Enhanced FF host Diagnostics > Enabled Diagnostics > Grounding/Wiring Fault

Detection

Basic FF host See Enabling the diagnostics.

The ground/wiring fault detection diagnostic can be turned on or off as required by the application. If the advanced diagnostics suite 1 (DA1 Option) was ordered, then the ground/wiring fault detection diagnostic will be turned on. If DA1 was not ordered or licensed, this diagnostic is not available.

Reference manual 89

Page 90

Advanced Diagnostics Configuration Reference manual

May 2019 00809-0500-4750

8.5.2 Ground/wiring fault parameters

The ground/wiring fault detection diagnostic has one read-only parameter. It does not have any configurable parameters.

Line noise

Enhanced FF host Diagnostics > Ground/Wiring Fault Detection > Line Noise

Basic FF host TB > LINE_NOISE (OD Index #72)

The line noise parameter shows the amplitude of the line noise. This is a read-only value. This number is a measure of the signal strength at 50/60 Hz. If the line noise value exceeds 5 mV, then the ground/wiring fault diagnostic alert will activate.

8.6 High process noise detection

The high process noise diagnostic detects if there is a process condition causing an unstable or noisy reading that is not an actual flow variation. A common cause of high process noise is slurry flow, like pulp stock or mining slurries. Other conditions that cause this diagnostic to activate are high levels of chemical reaction or entrained gas in the liquid. If unusual noise or flow variation is seen, this diagnostic will activate and deliver an alert. If this situation exists and is left without remedy, it will add additional uncertainty and noise to the flow reading.

8.6.1

8.6.2

Turning high process noise on/off

Enhanced FF host Diagnostics > Enabled Diagnostics > High Process Noise

Detection

Basic FF host See Enabling the diagnostics.

The high process noise diagnostic can be turned on or off as required by the application. If the advanced diagnostics suite 1 (DA1 Option) was ordered, then the high process noise diagnostic will be turned on. If DA1 was not ordered or licensed, this diagnostic is not available.

High process noise parameters

The high process noise diagnostic has two read-only parameters. It does not have any configurable parameters. This diagnostic requires that flow be present in the pipe and the velocity be greater than1 ft/s (0.3 m/s).

5 Hz signal to noise ratio (SNR)

Enhanced FF host

Basic FF host DIAG_SNR_5HZ (OD Index #69)

Diagnostics > High Process Noise Detection > 5 Hz Signal-toNoise Ratio

90 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 91

Reference manual Advanced Diagnostics Configuration

00809-0500-4750 May 2019

This parameter shows the value of the signal to noise ratio at the coil drive frequency of 5 Hz. This is a read-only value. This number is a measure of the signal strength at 5 Hz relative to the amount of process noise. If the transmitter is operating in 5 Hz mode, and the signal to noise ratio remains below 25 for one minute, then the high process noise diagnostic alert will activate.

37 Hz signal to noise ratio (SNR)

Enhanced FF host Diagnostics > High Process Noise Detection > 37 Hz Signal-to-

Noise Ratio

Basic FF host DIAG_SNR_37HZ (OD Index #70)

This parameter shows the current value of the signal to noise ratio at the coil drive frequency of 37 Hz. This is a read-only value. This number is a measure of the signal strength at 37 Hz relative to the amount of process noise. If the transmitter is operating in 37 Hz mode, and the signal to noise ratio remains below 25 for one minute, then the high process noise diagnostic alert will activate.

8.7 Coated electrode detection

The coated electrode detection diagnostic provides a means of monitoring insulating coating buildup on the measurement electrodes. If coating is not detected, buildup over time can lead to a compromised flow measurement. This diagnostic can detect if the electrode is coated and if the amount of coating is affecting the flow measurement. There are two levels of electrode coating.

• Limit 1 indicates when coating is starting to occur, but has not compromised the flow

measurement.

• Limit 2 indicates when coating is affecting the flow measurement and the meter should

be serviced immediately.

8.7.1

Turning coated electrode detection on/off

Enhanced FF host Diagnostics > Enabled Diagnostics > Electrode Coating

Detection

Basic FF host See Enabling the diagnostics.

The coated electrode detection diagnostic can be turned on or off as required by the application. If the advanced diagnostics suite 1 (DA1 option) was ordered, then the coated electrode detection diagnostic will be turned on. If DA1 was not ordered or licensed, this diagnostic is not available.

8.7.2

Reference manual 91

Coated electrode parameters

The coated electrode detection diagnostic has four parameters. Two are read-only and two are configurable parameters. The electrode coating parameters need to be initially monitored to accurately set the electrode coating limit levels for each application.

Page 92

Advanced Diagnostics Configuration Reference manual

May 2019 00809-0500-4750

Electrode coating (EC) value

Enhanced FF host Diagnostics > Electrode Coating > Electrode Coating Value

Basic FF host TB > ELECTRODE_COATING > CURRENT_VALUE (OD Index #47)

The electrode coating value reads the value of the coated electrode detection diagnostic.

Electrode coating (EC) level 1 limit

Enhanced FF host Diagnostics > Electrode Coating > Level 1 Limit

Basic FF host TB > ELECTRODE_COATING_CFG > LEVEL_1 (OD Index #46)

Set the criteria for the electrode coating limit 1 which indicates when coating is starting to occur, but has not compromised the flow measurement. The default value for this parameter is 1000 k Ohm.

Electrode coating (EC) level 2 limit

Enhanced FF host

Basic FF host TB > ELECTRODE_COATING_CFG > LEVEL_2 (OD Index #46)

Diagnostics > Electrode Coating > Level 2 Limit

Set the criteria for the electrode coating limit 2 which indicates when coating is affecting the flow measurement and the meter should be serviced immediately. The default value for this parameter is 2000 k Ohm.

Maximum electrode coating (EC)

Enhanced FF host

Basic FF host TB > ELECTRODE_COATING_CFG > MAX_VALUE (OD Index #47)

Diagnostics > Electrode Coating > Electrode Coating Max Value

The maximum electrode coating value reads the maximum value of the coated electrode detection diagnostic since the last maximum value reset.

Clear maximum electrode value

Enhanced FF host

Basic FF host TB > ELECTRODE_COATING_CFG > CLEAR_MAX (OD Index #46)

Diagnostics > Electrode Coating > Clear Max Electrode Coating

Use this method to reset the maximum electrode coating value.

8.8 SMART™ Meter Verification

The SMART Meter Verification diagnostic provides a means of verifying the flowmeter is within calibration without removing the sensor from the process. This diagnostic test provides a review of the transmitter and sensor's critical parameters as a means to document verification of calibration. The results of this diagnostic provide the deviation amount from expected values and a pass/fail summary against user-defined criteria for the application and conditions. The SMART Meter Verification diagnostic can be configured to

92 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 93

Reference manual Advanced Diagnostics Configuration

00809-0500-4750 May 2019

run continuously in the background during normal operation, or it can be manually initiated as required by the application.

8.8.1 Sensor baseline (signature) parameters

The SMART Meter Verification diagnostic functions by taking a baseline sensor signature and then comparing measurements taken during the verification test to these baseline results.

The sensor signature describes the magnetic behavior of the sensor. Based on Faraday's law, the induced voltage measured on the electrodes is proportional to the magnetic field strength. Thus, any changes in the magnetic field will result in a calibration shift of the sensor. Having the transmitter take an initial sensor signature when first installed will provide the baseline for the verification tests that are done in the future. There are three specific measurements that are stored in the transmitter's non-volatile memory that are used when performing the calibration verification.

Coil circuit resistance

8.8.2

Enhanced FF host

Basic FF host TB > COIL_RESIST_VALUE (OD Index #99)

The coil resistance is a measurement of the coil circuit health. This value is used as a baseline to determine if the coil circuit is still operating correctly.

Coil inductance (signature)

Enhanced FF host

Basic FF host TB > COIL_INDUCT_VALUE (OD Index #96)

The coil inductance is a measurement of the magnetic field strength. This value is used as a baseline to determine if a sensor calibration shift has occurred.

Electrode circuit resistance

Enhanced FF host

Basic FF host TB > ELECT_RESIST_VALUE (OD Index #101)

The electrode circuit resistance is a measurement of the electrode circuit health. This value is used as a baseline to determine if the electrode circuit is still operating correctly.

Meter Verification > Sensor Baseline > Coil Resistance

Meter Verification > Sensor Baseline > Coil Inductance

Meter Verification > Sensor Baseline > Electrode Resistance

Establishing the sensor baseline (signature)

The first step in running the SMART Meter Verification test is establishing the reference baseline that the test will use as the baseline for comparison. This is accomplished by having the transmitter take a baseline of the sensor.

Reset baseline (re-signature meter)

Enhanced FF host

Reference manual 93

Meter Verification > Sensor Baseline > Re-Baseline Sensor

Page 94

Advanced Diagnostics Configuration Reference manual

May 2019 00809-0500-4750

Basic FF host TB > PERFORM_REFINGERPRINT_FLOWTUBE (OD Index #110)

Having the transmitter take an initial sensor baseline when first installed will provide the comparison point for the verification tests that are done in the future. The sensor baseline should be taken during the start-up process when the transmitter is first connected to the sensor, with a full line, and ideally with no flow in the line. Running the sensor baseline procedure when there is flow in the line is permissible, but this may introduce some noise into the electrode circuit resistance measurement. If an empty pipe condition exists, then the sensor baseline should only be run for the coils.

Once the sensor baseline process is complete, the measurements taken during this procedure are stored in non-volatile memory to prevent loss in the event of a power interruption to the meter. This initial sensor signature is required for both manual and continuous SMART Meter Verification.

Recall values (recall last saved)

8.8.3

Enhanced FF host

Basic FF host TB > RECALL_FINGERPRINT_VALUES (OD Index #109)

Meter Verification > Sensor Baseline > Recall Last Baseline

In the event that the sensor baseline was reset accidentally or incorrectly, this function will restore the previously saved sensor baseline values.

SMART Meter Verification test criteria

The Smart Meter Verification diagnostic provides the ability to customize the test criteria to which the verification must be tested. The test criteria can be set for each of the flow conditions discussed above.

No flow limit

Enhanced FF host

Basic FF host TB > METER_VERIF_NO_FLOW_LIM (OD Index #108)

Set the test criteria for the no flow condition. The factory default for this value is set to five percent with limits configurable between one and ten percent. This parameter applies to manually initiated test only.

Flowing full limit

Meter Verification > Manual Meter Verification Limits > No Flow

Enhanced FF host

Basic FF host TB > METER_VERIF_FLOWING_LIM (OD Index #107)

Meter Verification > Manual Meter Verification Limits > Flowing

Set the test criteria for the flowing, full condition. The factory default for this value is set to five percent with limits configurable between one and ten percent. This parameter applies to manually initiated tests only.

94 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 95

Reference manual Advanced Diagnostics Configuration

00809-0500-4750 May 2019

Empty pipe limit

Enhanced FF host Meter Verification > Manual Meter Verification Limits > Empty

Pipe

Basic FF host TB > METER_VERIF_EP_LIM (OD Index #106)

Set the test criteria for the empty pipe condition. The factory default for this value is set to five percent with limits configurable between one and ten percent. This parameter applies to manually initiated test only.

Continuous limit

Enhanced FF host Meter Verification > Continuous Meter Verification >

Continuous Verification Limit

Basic FF host TB > CONT_METER_VERIFY_ LIMIT (OD Index #84)

Set the test criteria for the continuous SMART Meter Verification diagnostic. The factory default for this value is set to five percent with limits configurable between two and ten percent. If the tolerance band is set too tightly, under empty pipe conditions or noisy flowing conditions, a false failure of the transmitter test may occur.

8.9 Run manual SMART Meter Verification

Enhanced FF host Overview > Run Meter Verification

Basic FF host TB > PERFORM_METER_VERIFY (OD Index #111)

The SMART Meter Verification diagnostic will be available if the advanced diagnostic suite (DA2) was ordered. If DA2 was not ordered or licensed, this diagnostic will not be available. This method will initiate the manual meter verification test.

8.9.1

Test conditions

Enhanced FF host Meter Verification > Meter Verification Parameters > Test

Conditions

Basic FF host TB > METER_VERIF_TEST_COND_IN (OD Index #87)

SMART Meter Verification can be initiated under three possible test conditions. This parameter is set at the time that the sensor baseline or SMART Meter Verification test is manually initiated.

No flow

Run the SMART Meter Verification test with a full pipe and no flow in the line. Running the SMART Meter Verification test under this condition provides the most accurate results and the best indication of magnetic flowmeter health.

Flowing full

Reference manual 95

Run the SMART Meter Verification test with a full pipe and flow in the line. Running the SMART Meter Verification test under this condition provides the ability to verify the magnetic flowmeter health without shutting down

Page 96

Advanced Diagnostics Configuration Reference manual

May 2019 00809-0500-4750

the process flow in applications when a shutdown is not possible. Running the diagnostic under flowing conditions can cause a false test failure if there is significant process noise present.

Empty pipe

Run the SMART Meter Verification test with an empty pipe. Running the SMART Meter Verification test under this condition provides the ability to verify the magnetic flowmeter health with an empty pipe. Running the verification diagnostic under empty pipe conditions will not check the electrode circuit health.

8.9.2 Test scope

Enhanced FF host Meter Verification > Meter Verification Parameters > Coils,

Basic FF host TB > METER_VERIF_TEST_SCOPE (OD Index #86)

The manually initiated SMART Meter Verification test can be used to verify the entire flowmeter installation or individual parts such as the transmitter or sensor. This parameter is set at the time that the SMART Meter Verification test is manually initiated. There are three test scopes from which to choose.

Use the parameter values below to set the test scope. The parameter value must be set before initiating SMART Meter Verification.

0 Uninitialized

1 All (sensor and transmitter)

Electrodes, Transmitter

Test scope

2 Sensor

3 Transmitter

All

Run the SMART Meter Verification test and verify the entire flowmeter installation. This parameter results in the diagnostic performing the transmitter calibration verification, sensor calibration verification, coil health check, and electrode health check. Transmitter calibration and sensor calibration are verified to the percentage associated with the test condition selected when the test was initiated. This setting applies to manually initiated tests only.

Transmitter

Run the SMART Meter Verification test on the transmitter only. This results in the verification test only checking the transmitter calibration to the limits of the test criteria selected when the verification test was initiated. This setting applies to manually initiated tests only.

Sensor (coils and electrodes)

Run the SMART Meter Verification test on the sensor only. This results in the verification test checking the sensor calibration to the limits of the test criteria selected when the SMART Meter Verification test was initiated, verifying the coil circuit health, and the electrode circuit health. This setting applies to manually initiated tests only.

96 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 97

Reference manual Advanced Diagnostics Configuration

00809-0500-4750 May 2019

8.10 Continuous SMART Meter Verification

Continuous SMART Meter Verification can be used to monitor and verify the health of the flowmeter system. The continuous SMART Meter Verification will not report results until 30 minutes after powering up to ensure the system is stable and to avoid false failures.

8.10.1 Test scope

Continuous SMART Meter Verification can be configured to monitor the sensor coils, electrodes, and transmitter calibration, All of these parameters can be individually enabled or disabled. These parameters apply to continuous SMART Meter Verification only.

Coils

Enhanced FF host

Basic FF host TB > CONT_METER_VERIFY_ENABLE > bit 0 (OD Index #85)

Continuously monitor the sensor coil circuit by enabling this continuous SMART Meter Verification parameter.

Electrodes

Enhanced FF host

Basic FF host TB > CONT_METER_VERIFY_ENABLE > bit 1 (OD Index #85)

Continuously monitor the electrode resistance by enabling this continuous SMART Meter Verification parameter.

Transmitter

Enhanced FF host

Basic FF host TB > CONT_METER_VERIFY_ENABLE > bit 2 (OD Index #85)

Continuously monitor the transmitter calibration by enabling this continuous SMART Meter Verification parameter.

View Meter Verification Report

8.11 SMART Meter Verification test results

If the SMART Meter Verification test is manually initiated, the transmitter will make several measurements to verify the transmitter calibration, sensor calibration, coil circuit health, and electrode circuits health. The results of these tests can be reviewed and recorded on the calibration verification report (see Optimizing continuous SMART Meter Verification) . This report can be used to validate that the meter is within the required calibration limits to comply with governmental regulatory agencies.

Depending on the method used to view the results, they will be displayed in either a menu structure, as a method, or in the report format.

The results are displayed in the order found in the following table. Each parameter displays a value used in the SMART Meter Verification diagnostic evaluation of the meter health.

Reference manual 97

Page 98

Advanced Diagnostics Configuration Reference manual

May 2019 00809-0500-4750

Table 8-4: Manual Smart Meter Verification Test Parameters

Transducer block parameter name Index number(s)

METER_VERIF_TEST_SCOPE 86

METER_VERIF_TEST_COND_IN 87

METER_VERIF_TEST_COND_OUT 88

METER_VERIF_CRITERIA 89

METER_VERIF_RESULT 90

COIL_RESIST_RESULT 91

COIL_INDUCT_RESULT 92

ELECT_RESIST_RESULT 93

INT_SIM_RESULT 94

INT_SIM_DEVIATION 103

Table 8-5: Continuous SMART Meter Verification Test Parameters

Parameter Index number(s)

CONT_METER_VERIFY_ LIMIT 84

CONT_METER_VERIFY_ ENABLE 85

CONTINUOUS_MV_ RESULTS: INTERNAL_SIM_VALUE 52

CONTINUOUS_MV_ RESULTS: INTERNAL_SIM_DEVIATION 52

CONTINUOUS_MV_ RESULTS: COIL_INDUCT_VALUE 52

CONTINUOUS_MV_ RESULTS: COIL_INDUCT_DEVIATION 52

CONTINUOUS_MV_ RESULTS: COIL_RESIST_VALUE 52

CONTINUOUS_MV_ RESULTS: ELECTRODE_RESIST_VALUE 52

8.12 SMART Meter Verification measurements

The SMART Meter Verification test will make measurements of the coil resistance, coil inductance, and electrode resistance and compare these values to the values taken during the sensor baseline process to determine the sensor calibration deviation, the coil circuit health, and the electrode circuit health. In addition, the measurements taken by this test can provide additional information when troubleshooting the meter.

Coil circuit resistance

Enhanced FF host

View Meter Verification Report

Basic FF host Manual: TB > COIL_RESIST_RESULT (OD Index #91)

Continuous: TB > CONTINUOUS_MV_ RESULTS > COIL_RESIST_VALUE (OD Index #52)

98 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Page 99

Reference manual Advanced Diagnostics Configuration

00809-0500-4750 May 2019

The coil circuit resistance is a measurement of the coil circuit health. This value is compared to the coil circuit resistance signature measurement taken during the sensor baseline process to determine coil circuit health. This value can be continuously monitored using continuous SMART Meter Verification.

Coil inductance (signature)

Enhanced FF host

Basic FF host Manual: TB > COIL_INDUCT_RESULT (OD Index #92)

View Meter Verification Report

Continuous: TB > CONTINUOUS_MV_ RESULTS > COIL_INDUCT_VALUE (OD Index #52)

The coil inductance is a measurement of the magnetic field strength. This value is compared to the coil inductance signature measurement taken during the sensor baseline process to determine sensor calibration deviation. This value can be continuously monitored using continuous SMART Meter Verification.

Electrode circuit resistance

Enhanced FF host

Basic FF host Manual: TB > ELECT_RESIST_RESULT (OD Index #93)

View Meter Verification Report

Continuous: TB > CONTINUOUS_MV_ RESULTS > ELECTRODE_RESIST_VALUE (OD Index #52)

The electrode circuit resistance is a measurement of the electrode circuit health. This value is compared to the electrode circuit resistance signature measurement taken during the sensor baseline process to determine electrode circuit health. This value can be continuously monitored using continuous SMART Meter Verification.

Actual velocity

Enhanced FF host

Basic FF host Manual: TB > INT_SIM_RESULT (OD Index #94)

View Meter Verification Report

Continuous: TB > CONTINUOUS_MV_ RESULTS > INTERNAL_SIM_VELOCITY (OD Index #52)

The actual velocity is a measurement of the simulated velocity signal. This value is compared to the simulated velocity to determine transmitter calibration deviation. This value can be continuously monitored using continuous SMART Meter Verification.

Flow simulation deviation

Enhanced FF host

Basic FF host Manual: TB > INT_SIM_DEVIATION (OD Index #103)

View Meter Verification Report

Continuous: TB > CONTINUOUS_MV_ RESULTS > INTERNAL_SIM_DEVIATION (OD Index #52)

The flow simulation deviation is a measurement of the percent difference between the simulated velocity and the actual measured velocity from the transmitter calibration

Reference manual 99

Page 100

Advanced Diagnostics Configuration Reference manual

May 2019 00809-0500-4750

verification test. This value can be continuously monitored using continuous SMART Meter Verification.

8.13 Optimizing the SMART Meter Verification

The SMART Meter Verification diagnostic can be optimized by setting the test criteria to the desired levels necessary to meet the compliance requirements of the application. The following examples below will provide some guidance on how to set these levels.

Example 1

Example 2

Example 3

An effluent meter must be certified annually to comply with environmental regulations. This example regulation requires that the meter be certified to five percent. Since this is an effluent meter, shutting down the process may not be viable. In this instance the SMART Meter Verification test will be performed under flowing conditions. Set the test criteria for flowing, full to five percent to meet the requirements of the governmental agencies.

A pharmaceutical company requires bi-annual verification of meter calibration on a critical feed line for one of their products. This is an internal standard, and the plant requires a calibration record be kept on-hand. Meter calibration on this process must meet two percent. The process is a batch process so it is possible to perform the calibration verification with the line full and with no flow. Since the SMART Meter Verification test can be run under no flow conditions, set the test criteria for no flow to two percent to comply with the necessary plant standards.

A food and beverage company requires an annual calibration of a meter on a product line. The plant standard calls for the accuracy to be three percent or better. They manufacture this product in batches, and the measurement cannot be interrupted when a batch is in process. When the batch is complete, the line goes empty. Since there is no means of performing the SMART Meter Verification test while there is product in the line, the test must be performed under empty pipe conditions. The test criteria for empty pipe should be set to three percent, and it should be noted that the electrode circuit health cannot be verified.

8.13.1 Optimizing continuous SMART Meter Verification

For continuous SMART Meter Verification, there is only one test criteria value to configure, and it will be used for all flow conditions. The factory default is set to five percent to minimize the potential for false failures under empty pipe conditions. For best results, set the criteria to match the maximum value of the three test criteria set during manual meter verification (no flow, flowing full, and empty pipe).

For example, a plant might set the following manual meter verification test criteria: two percent for no flow, three percent for flowing full, and four percent for empty pipe. In this case, the maximum test criterion is four percent, so the test criteria for continuous SMART Meter Verification should be set to four percent. If the tolerance band is set too tightly, under empty pipe conditions or noisy flowing conditions, a false failure of the transmitter test may occur.

100 Rosemount™ 8750W Transmitter with FOUNDATION™ Fieldbus Protocol

Emerson Rosemount Foundation 8750W Reference Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

1 Safety messages

2 Introduction

2.1 System description

2.2 Product recycling/disposal

3 Sensor Installation

3.1 Handling and Lifting Safety

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

Electrode orientation

3.3 Sensor installation

3.4 Process reference connection

4 Remote Transmitter Installation

4.1 Pre-installation

4.2 Transmitter symbols

4.3 Mounting

4.4 Wiring

4.4.1 Conduit entries and connections

Conduit requirements

Sensor to transmitter wiring

4.4.4 Installation and wiring drawings

4.4.5 Power and fieldbus terminal blocks (field mount)

4.4.6 Power and fieldbus terminal blocks (wall mount)

4.4.7 Powering the transmitter

4.4.8 Fieldbus wiring

4.5 Cover jam screw

5 Basic Configuration

5.1 Communication methods

5.2 FOUNDATION fieldbus configuration

5.3 Basic Setup

6 Advanced installation details

6.1 Hardware switches

6.1.1 Transmitter security

Simulate mode

Changing hardware switch settings (field mount)

Changing hardware switch settings (wall mount)

6.2 Connect pulse output

Connecting an external power supply

6.3 Coil housing configuration

6.3.1 Standard coil housing configuration

Process leak protection (option M1)

Process leak containment (Option M2 or M4)

Process leak containment with electrode access (option M3)

Higher temperature applications and sensor insulation best practices

Reference manual Advanced Configuration Functionality

7.1 Introduction

7.2 Configure outputs

7.2.1 Pulse output

7.2.2 Totalizer

7.3 Configure LOI/Display

7.3.1 Flow and totalizer display

Language

7.3.3 Backlight control

7.4 Signal processing

PV (flow) damping

7.4.2 Process density

7.4.3 Low flow cutoff

Reverse flow

7.4.5 Coil drive frequency

8 Advanced Diagnostics Configuration

8.1 Introduction

8.2 Licensing and enabling

8.2.1 Licensing the diagnostics

8.2.2 Enabling the diagnostics

8.3 Tunable empty pipe detection

Tunable empty pipe parameters

Optimizing tunable empty pipe

8.4 Electronics temperature

8.4.1 Turning electronics temperature on/off

8.4.2 Electronics temperature parameters

8.5 Ground/wiring fault detection

Turning ground/wiring fault on/off

8.5.2 Ground/wiring fault parameters