Micro Motion Field-Mount Transmitter - Model RFT9739 Manuals & Guides

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Model RFT9739 Field-Mount Transmitter

Instruction Manual

Version 3 Transmitters

February 2000

Model RFT9739

Micro Motion, ELITE, and ProLink are registered trademarks of Micro Motion, Inc., Boulder, Colorado. Rosemount and SMART FAMILY are registered tradema r k s of Rosemount, Inc., Eden Prair i e, Minn eso ta . Fis her -Rosemount is a trademark o f Fisher-Rosemount, C layton, Missouri. HART is a registered trademar k of the HART Communication Foundation, Austin, Texas. Modbus is a registered tra dem ark of Modicon, Inc., North Andover, Massachusetts. Tefzel is a registered trademark of E.I. Du Pont de Nemours Co., Inc., Wilmington, Delaware.

Field-Mount Transmitter

Instruction Manual

Version 3 Transmitters

For technical assistance, phone the Micro Motion Customer Service Department:

• In the U.S.A., phone 1-800-522-6277, 24 hours

• Outside the U.S.A., phone 30 3-530-8400, 24 hours

• In Europe, phone +31 (0) 318 549 443

• In Asia, phone 65-770-8155

1 Before You Begin

1.1 About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 About the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Getting Started

2.1 Hazardous area installations. . . . . . . . . . . . . . . . . . . . 3

Installations in Europe. . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2 Configuration, calibration, and characterization . . . . . 4

2.3 Switch settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Security modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Security mode 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Communication settings . . . . . . . . . . . . . . . . . . . . . . . 9

Milliamp output scaling . . . . . . . . . . . . . . . . . . . . . . . . 9

3 Transmitter Mounting

3.1 General guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2 Mounting to a wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.3 Mounting to an instrument pole. . . . . . . . . . . . . . . . . . 13

4 Power-Supply and Sensor Wiring

4.1 General guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Installations in Europe. . . . . . . . . . . . . . . . . . . . . . . . . 17

4.2 Power supply and grounding. . . . . . . . . . . . . . . . . . . . 18

Power-supply options . . . . . . . . . . . . . . . . . . . . . . . . . 18

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.3 Sensor wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Cable connections to sensor and transmitter . . . . . . . 21

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . .

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Contents

continued

5 Output Wiring

5.1 General guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.2 Maximum wire length. . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.3 Primary and secondary mA outputs. . . . . . . . . . . . . . . 27

Connections for HART

5.4 Frequency/pulse output . . . . . . . . . . . . . . . . . . . . . . . . 30

Default configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Configuration for increased current . . . . . . . . . . . . . . . 31

Configuration for constant current . . . . . . . . . . . . . . . . 32

Configuration for open collector mode. . . . . . . . . . . . . 33

5.5 Control output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Control output in open collector mode . . . . . . . . . . . . . 36

5.6 Peripheral device wiring. . . . . . . . . . . . . . . . . . . . . . . . 38

5.7 Pressure transmitter wiring . . . . . . . . . . . . . . . . . . . . . 44

5.8 Remote-zero switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

5.9 RS-485 multidrop network . . . . . . . . . . . . . . . . . . . . . . 47

5.10 Bell 202 multidrop network. . . . . . . . . . . . . . . . . . . . . . 48

6Startup

6.1 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

6.2 Using the optional display . . . . . . . . . . . . . . . . . . . . . . 51

6.3 Custody transfer event registers . . . . . . . . . . . . . . . . . 56

6.4 Flowmeter zeroing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

6.5 Totalizer control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

6.6 Process measurement. . . . . . . . . . . . . . . . . . . . . . . . . 61

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Initialization with display. . . . . . . . . . . . . . . . . . . . . . . . 51

Adjusting the sight window. . . . . . . . . . . . . . . . . . . . . . 52

Process variables mode. . . . . . . . . . . . . . . . . . . . . . . . 52

Communication configuration mode . . . . . . . . . . . . . . 54

Zeroing procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Diagnosing zero failure . . . . . . . . . . . . . . . . . . . . . . . . 59

Additional information about flowmeter zeroing. . . . . . 59

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

communication devices. . . . . 29

RFT9739 Field-Mou nt Tra nsm i t t er Instruction Manual

Contents

continued

7 Troubleshooting

7.1 General guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

7.2 Transmitter diagnostic tools. . . . . . . . . . . . . . . . . . . . . 64

Diagnostic LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Fault outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Diagnostic messages . . . . . . . . . . . . . . . . . . . . . . . . . 65

7.3 Interrogation with a HART

7.4 Troubleshooting using the transmitter display. . . . . . . 68

Not configured. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Transmitter failure messages . . . . . . . . . . . . . . . . . . . 68

Overrange and sensor error messages. . . . . . . . . . . . 69

Slug flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Output saturated messages . . . . . . . . . . . . . . . . . . . . 69

Informational messages . . . . . . . . . . . . . . . . . . . . . . . 71

7.5 Power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

7.6 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

7.7 Master reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

7.8 Additional information about troubleshooting . . . . . . . 76

7.9 Customer service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

device . . . . . . . . . . . . . . . 66

Appendixes

Appendix A RFT9739 Specifications . . . . . . . . . . . . . . . . . . 77

Appendix B Ordering Information. . . . . . . . . . . . . . . . . . . . . 85

Appendix C Theory of Operation . . . . . . . . . . . . . . . . . . . . . 87

Appendix D HART

Appendix E Label Maintenance and Replacement . . . . . . . 95

Appendix F Transmitter Version Identification. . . . . . . . . . . 97

Appendix G Replacing Older Transmitters. . . . . . . . . . . . . . 99

Appendix H Return Policy . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Communicator Menu Trees. . . . . . . . . 91

Index

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

107

iii

Contents

continued

Tables

Table 2-1 Security modes . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 2-2 Communications configuration . . . . . . . . . . . . . 10

Table 4-1 Terminal designations . . . . . . . . . . . . . . . . . . . . 22

Table 5-1 Output wiring terminal designations . . . . . . . . . 26

Table 5-2 Peripheral wiring diagrams . . . . . . . . . . . . . . . . 38

Table 5-3 Sensors affected by pressure . . . . . . . . . . . . . . 44

Table 6-1 Display screens. . . . . . . . . . . . . . . . . . . . . . . . . 53

Table 6-2 Parameters that affect event registers . . . . . . . 56

Table 6-3 Effect of security modes on flowmeter zeroing . 59 Table 6-4 Effect of security modes on totalizer control . . . 60

Table 7-1 Conditions indicated by diagnostic LED . . . . . . 64

Table 7-2 Fault output levels. . . . . . . . . . . . . . . . . . . . . . . 65

Table 7-3 Using transmitter failure messages. . . . . . . . . . 68

Table 7-4 Using overrange and sensor error messages. . 70 Table 7-5 Using slug flow and output saturated messages 70

Table 7-6 Using informational messages . . . . . . . . . . . . . 72

Table 7-7 Normal resistance for flowmeter circuits . . . . . . 73

Table 7-8 Default values after a master reset . . . . . . . . . . 75

Tables in appendixes

Table G-1 Resistance values for determining RTD type . . 100

Table G-2 RE-01 to RFT9739 terminal conversions . . . . . 102

Table G-3 RFT9712 to RFT9739 terminal conversions . . . 103

RFT9739 Field-Mou nt Tra nsm i t t er Instruction Manual

Contents

continued

Figures

Figure 1-1 RFT9739 exploded view. . . . . . . . . . . . . . . . . . 2

Figure 2-1 Hazardous area approvals tag . . . . . . . . . . . . . 3

Figure 2-2 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3-1 RFT9739 dimensions . . . . . . . . . . . . . . . . . . . . 12

Figure 3-2 Instrument-pole mounting. . . . . . . . . . . . . . . . . 13

Figure 4-1 RFT9739 exploded view. . . . . . . . . . . . . . . . . . 16

Figure 4-2 Lockout clamp for CENELEC transmitters . . . . 17

Figure 4-3 Power-supply wiring terminals . . . . . . . . . . . . . 19

Figure 4-4a Grounding detail — typical . . . . . . . . . . . . . . . . 20

Figure 4-4b Grounding detail — European installations . . . 20 Figure 4-5 Wiring to ELITE Figure 4-6 Wiring to F-Series, Model D, and DL sensors . 23

Figure 4-7 Wiring to Model DT sensors . . . . . . . . . . . . . . . 23

Figure 5-1 Output terminals . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 5-2 4-20 mA output performance . . . . . . . . . . . . . . 27

Figure 5-3 Primary and secondary mA output wiring. . . . . 28

Figure 5-4 HART

Communicator, ProLink® PC-Interface,

and AMS modem connections . . . . . . . . . . 29

Figure 5-5 Frequency/pulse output wiring . . . . . . . . . . . . . 31

Figure 5-6 Frequency/pulse output wiring for increased

current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 5-7 Frequency/pulse output wiring for constant

current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 5-8 Frequency/pulse output wiring for open

collector mode . . . . . . . . . . . . . . . . . . . . . . 34

Figure 5-9 Location of resistor R14 (R1) on output board . 34

Figure 5-10 Control output wiring. . . . . . . . . . . . . . . . . . . . . 35

Figure 5-11 Control output wiring for open collector mode . 37 Figure 5-12 Location of resistor R15 (R2) on output board . 37

Figure 5-13 Wiring to DMS. . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 5-14a Wiring to DRT with LED . . . . . . . . . . . . . . . . . . 39

Figure 5-14b Wiring to DRT with LCD . . . . . . . . . . . . . . . . . . 39

Figure 5-15a Wiring to FMS-3 with LED . . . . . . . . . . . . . . . . 40

Figure 5-15b Wiring to FMS-3 with LCD . . . . . . . . . . . . . . . . 40

Figure 5-16 Wiring to NFC . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 5-17a Wiring to AC-powered NOC . . . . . . . . . . . . . . . 42

Figure 5-17b Wiring to DC-powered NOC . . . . . . . . . . . . . . . 42

Figure 5-18a Wiring to Model 3300 with screw-type or

solder-tail terminals . . . . . . . . . . . . . . . . . . 43

Figure 5-18b Wiring to Model 3300 with I/O cable. . . . . . . . . 43

Figure 5-19 Wiring to Model 3350 . . . . . . . . . . . . . . . . . . . . 43

Figure 5-20a Wiring to pressure transmitter — analog input . 45 Figure 5-20b Wiring to pressure transmitter — external

power, analog input . . . . . . . . . . . . . . . . . . 45

Figure 5-20c Wiring to pressure transmitter — digital

communications . . . . . . . . . . . . . . . . . . . . . 46

Figure 5-21 Wiring to remote-zero switch . . . . . . . . . . . . . . 46

Figure 5-22 RS-485 wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 5-23 Typical HART

Figure 6-1 Diagnostic LED and zero button. . . . . . . . . . . . 58

CMF sensors . . . . . . . . . . . . 22

network wiring . . . . . . . . . . . . . 49

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Contents

continued

Figure 7-1 Diagnostic LED and communicator loops . . . . . 64

Figure 7-2 HART

Communicator, ProLink® PC-Interface,

and AMS modem connections . . . . . . . . . . 67

Figures in appendixes

Figure C-1 Coriolis mass flow sensor . . . . . . . . . . . . . . . . . 87

Figure D-1 On-line menu. . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Figure E-1 Label number 3002168 . . . . . . . . . . . . . . . . . . . 95

Figure F-1 Switches on RFT9739 transmitters. . . . . . . . . . 97

Figure G-1 RFT9739 terminals . . . . . . . . . . . . . . . . . . . . . . 101

Figure G-2 RE-01 Remote Electronics Unit terminals. . . . . 102

Figure G-3 RFT9712 Remote Flow Transmitter terminals . 103

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

1 Before You Begin

1.1 About this manual

1.2 About the transmitter

This instruction manual explains how to:

• Install the Micro Motion use with Micro Motion Coriolis flow sensors, including instructions for:

Transmitter mounting

Power-supply, sensor, and output wiring

• Initialize the transmitter

• Diagnose and troubleshoot problems with the transmitter

For information about Micro Motion sensors, see the appropriate sensor instruction manuals.

Instructions in this manual pertain to Version 3 transmitters. Do not use this manual for transmitters shipped before January 1996. To identify the transmitter version, see

Micro Motion sensors and transmitters with enhanced EMI immunity comply with EMC directive 89/336/EEC and low-voltage directive 73/23/EEC, when properly installed in accordance with the guidelines and instructions in this manual.

The Model RFT9739 transmitter is a microprocessor-based transmitter for fluid process measurement. The transmitter works with Micro Motion sensors to measure mass or volume flow, density, and temperature.

An optional display is available, and comes installed on the removable housing cover. Scroll and Reset knobs on the cover enable the user to perform the following operations (see

• View flow rate, density, temperature, mass and volume totals and inventory levels, and status messages

• Set the transmitter's flow totalizers

• Reset communication paramete rs

• Zero the flowmeter

Model RFT9739 field-mount transmitter for

Appendix F

, page 97.

Section 6.2

, page 51):

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

Components of the transmitter are shown in

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Figure 1-1

, page 2.

continued

Before You Begin

Figure 1-1. RFT9739 exploded view

Removable cover

of housing

Hinged cover of

electronics module

Diagnostic LED

Electronics modu le

Intrinsically safe

terminals for wiring

to sensor

Partition (safety barrier)

Must be in place during

operation of transmitter

Housing base

Switches 1 through 10

Zero button

Non-intrinsically safe output termina l s

Power-supply wiring and equipment ground terminals

RFT9739 Field-Mou nt Tra nsm i t t er Instruction Manual

2 Getting Started

Hazardous area approvals tag

2.1 Hazardous area installations

WARNING

Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion.

• Install the transmitter in an environment that is compatible with the hazardous area specified on the approvals tag. See

• For intrinsically safe inst allati ons , use this docu me nt with Micro Motion UL, CSA, or SAA installation instructions.

• For hazardous area installations in Europe, refer to standard EN 60079-14 if nation al standards do not apply.

• Read the approvals tag before installing the RFT9739. The approvals tag is attached to the transmitter housing. See

• For a complete list of UL, CSA, SAA, and European approvals, see page 82.

• For intrinsically safe installations, use this manual with the appropriate Micro Motion intrinsically safe installation instructions:

UL-D-IS Installation Instructions

CSA-D-IS Installation Instructions

SAA-D-IS Installation Instructions

• In Europe, refer to standard EN60079-14 if national standards do not apply. To comply with CENELEC standards, see page 4.

Figure 2-1

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

Figure 2-1. Hazardous area approvals tag

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Getting Started

continued

Installations in Europe

2.2 Configuration, calibration, and characterization

To comply with CENELEC standards for hazardous area installations in Europe, adhere to the following CENELEC conditions for safe use.

Cable glands and conduit seals

• Use 3/4"-14 NPT cable glands or conduit fittings, rated flameproof for EEx d IIC areas and certified by an authorized test station. Flameproof glands supplied by Micro Motion meet these requirements.

• Conduit openings that are not used should be sealed with blanking plugs of type PLG 2.

• For installation in a nonhazardous area, cable glands or conduit fittings that do not carry a flameproof rating are acceptable.

Potential equalization

To achiev e potential equalization, the RFT9739 ground conductor should be connected to the appropriate ground terminals within the hazardous area, using a potential equalizing line.

Output wiring

Nonintrinsically-safe connections between the RFT9739 and other devices may be made or equal to 250 V.

The following information explains the differences among configuration, calibration, and characterization. Certain parameters might require

configuration

even when

only

to devices that maintain a voltage less than

calibration

is not necessary.

Configuration parameters

measurement units, flow direction, damping values, slug flow parameters, and span values for the milliamp and frequency outputs. If requested at time of order, the transmitter is configured at the factory according to customer specifications.

Calibration

density, and temperature. Field calibration is optional.

Characterization

density, and temperature directly into transmitter memory. Calibration factors can be found on the sensor serial number tag and on the certificate that is shipped with the sensor.

For configuration, calibration, or characterization procedures, see one of the following communications manuals:

Using the HART Communicator with Micro Motion Transmitters

•

Using ProLink Software with Micro Motion Transmitters

•

Using Modbus Protocol with Micro Motion Transmitters

•

You can also use Fisher-Rosemount™ Asset Management Solutions (AMS) software for configuration, calibration, and characterization. For more information, see the AMS on-line help.

A basic software tree for the HART Communicator is shown in

Appendix D

accounts for an individual sensor’s sensitivity to flow,

is the process of entering calibration factors for flow,

, page 91.

include items such as flowmeter tag,

RFT9739 Field-Mou nt Tra nsm i t t er Instruction Manual

Getting Started

continued

2.3 Switch settings

Security modes

Switches 1 through 10 on the electronics module control the following transmitter functions:

• Baud rate

• Stop bits and parity

• Data bits, communication protocol, and physical layer

• mA outputs

• Zeroing method

• Write-protection of transmitter configuration Switches 1 through 10 are illustrated in

Figure 2-2

, and described in the

following sections. Normally, switch settings do not require adjustment.

Switches 1, 2, and 3 are security switches, which enable the user to disable flowmeter zeroing, disable resetting of totalizers, and writeprotect all configuration and calibration parameters.

Switch settings enable any of eight possible security modes. Different modes determine which functions are disabled and whether configuration and calibration parameters are write-protected. The following functions can be disabled:

• Flowmeter zeroing using digital communications

• Flowmeter zeroing using the zero button and, if the transmitter has a display, the Scroll and Reset knobs

• Totalizer reset, with flow, using digital communications

• Totalizer reset, with flow, using the Scroll and Reset knobs, if the transmitter has a display

• Totalizer control, with zero flow, using digital communications

• Totalizer control, with zero flow, using the Scroll and Reset knobs, if the transmitter has a display

• Ability to change configuration or calibration factors

Pow er-Supply and

Sensor Wiring

Table 2-1

are disabled for each security mode. Security modes 1 through 7 are entered immediately when switches 1 through 3 are set.

For information about security mode 8, see pages 6 through 8.

Figure 2-2. Switches

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

lists the parameters that are write-protected and functions that

Switches 1 through 10 at left are shown in the OFF position.

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

continued

Getting Started

Table 2-1. Security modes

Switch settings

Switch 1 Switch 2 Switch 3

Function/ parameter

Flowmeter zeroing

Totalize r control, no flow

Totalize r control, with flow

Configuration and calibration parameters

* C hanging the settings of switches 1, 2, and 3 does not immediately impl em ent security mode 8. For more information about

security mode 8, see pages 6 through 8.

Performed with

Zero but t on or Reset knob

HART or Modbus

Scroll and Reset knobs

HART or Modbus

Scroll and Reset knobs

HART or Modbus

Mode

OFF OFF OFF

Mode

OFF OFF

Mode

Disabled Disabled Disabled Disabled Disabled Disabled Disabled

Disabled Disabled Disabled Disabled

Disabled Disabled Disabled Disabled Disabled Disabled Disabled

Mode

OFF

Mode

Disabled Disabled Disabled Disabled

Disabled Disabled Disabled

Disabled Disabled Disabled Disabled Disabled Disabled

Write-

protected

Mode

OFF

ON ON

Mode

Write-

protected

Mode

ON OFF OFF

Mode

Write-

protected

Mode

OFF

Mode

Write-

protected

Mode

ON ON

OFF

Mode

Write-

protected

Mode

ON ON ON

Mode

Write-

protected

Security mode 8

When transmitter security is set for mode 8, the transmitter meets security requirements for custody transfer described in National Institute of Standards and Technology (NIST) Handbook 44.

Once the transmitter is configured for security mode 8, the security mode cannot be changed unless a master reset is performed. A master reset causes all configuration parameters to return to their default values, and

requires complete characterization and reconfiguration

of the trans m i tt e r.

If the user attempts to enter a new security mode or change the transmitter configuration after entering security mode 8:

• Internal totalizers stop counting

• The frequency/pulse output goes to 0 Hz

• mA outputs go to 4 mA

• The optional display reads, "SECURITY BREACH; SENSOR OK"

• Custody transfer event registers record changes made to defined configuration and calibration parameters. (For a list of these parameters, see

Table 6-2

, page 56.)

The security breach continues, and totalizers and outputs remain inactive, until the transmitter is reconfigured for security mode 8, or until a master reset has been performed. Custody transfer ev ent registers are not affected by a master reset.

• For information about event registers, see

• To perform a master reset, see instructions in

Section 6.3

Section 7.7

, page 56.

, page 74.

RFT9739 Field-Mou nt Tra nsm i t t er Instruction Manual

Getting Started

continued

Milliamp output trim, milliamp output test, and frequency/pulse output test procedures cannot be performed after security mode 8 is entered.

Before entering security mode 8,

perform milliamp trim and/or test procedures, if necessary , as described in any of the following manuals or in AMS on-line help:

Using the HART Communicator with Micro Motion Transmitters

•

Using ProLink Software with Micro Motion Transmitters

•

Using Modbus Protocol with Micro Motion Transmitters

•

To enter security mode 8:

1. Note the position of switch 5.

2. Set switch 10 to the ON position. The diagnostic LED on the

transmitter electronics module flashes on 3 times and pauses, which indicates the transmitter is in the configuration mode.

3. Set switches 1, 2, and 3 to the ON position.

4. Set switches 4, 5, and 6 to the OFF position.

5. Locate the ZERO button on the transmitter electronics module.

6. Press and hold the ZERO button for five seconds. The diagnostic LED

will remain on for two to three seconds to indicate security mode 8 has been entered.

7. Reset switch 5 to the desired position (as noted in Step 1).

8. Reset switch 10 to the OFF (OPERATE) position. The diagnostic LED

flashes on once per second (25% on, 75% off), which indicates the transmitter is in the normal operating mode.

9. Leave switches 1, 2, and 3 in the ON position to remain in security

mode 8.

Pow er-Supply and

Sensor Wiring

To verify the transmitter is in security mode 8:

• If the transmitter has a display, use the Scroll knob to scroll through

process variable screens to event register screens. If event register screens appear, the transmitter is in security mode 8. For more information about using the Scroll knob and transmitter display, see

Section 6.2

, page 51.

• If the transmitter does not have a display:

1. Configure the transmitter.

2. Wait until the diagnostic LED blinks ON once per second.

3. Move switch 1, 2, or 3 to the OFF position.

4. If the diagnostic LED blinks ON 4 times per second, the transmitter is in security mode 8.

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Getting Started

continued

To make changes to configuration or calibration parameters once security mode 8 is entered:

1. Set switches 1, 2, and 3 to the OFF position.

2. Make changes through digital communication or, if the transmitter has a display, with the Scroll and Reset knobs (see "Communication configuration mode," page 54). Custody transfer event registers record changes made to defined configuration and calibration parameters (see

Table 6-2

, page 56). For more information about digital com m uni cati ons , see th e following ins truc tion m an ual s or AM S on-line help:

Using the HART Communicator with Micro Motion Transmitters

•

Using ProLink Software with Micro Motion Transmitters

•

Using Modbus Protocol with Micro Motion Transmitters

•

3. Set switches 1, 2, and 3 to the ON position.

To reenter security mode 8:

If security mode 8 has been established previously, and the security mode has been temporarily changed, it is not necessary to use the ZERO button to reenter security mode 8. In such a case, resetting switches 1, 2, and 3 to the ON position will reenter security mode 8 immediately.

If a master reset has been performed, it is necessary to use the ZERO button method to reenter security mode 8. See procedure, page 7.

To change from security mode 8 to another security mode:

1. Perform a master reset (see

Section 7.7

, page 74, for master reset

procedure).

2. Perform characterization and reconfiguration procedures as described in any of the following instruction manuals:

Using the HART Communicator with Micro Motion Transmitters

•

Using ProLink Software with Micro Motion Transmitters

•

Using Modbus Protocol with Micro Motion Transmitters

•

3. Set switches 1, 2, and 3 to the desired positions (see

Table 2-1

page 6).

RFT9739 Field-Mou nt Tra nsm i t t er Instruction Manual

Getting Started

continued

Communication settings

Switch 5 enables the user to choose the standard communication configuration or user-defined parameters. With switch 10 in the ON (CONFIG) position, switches 1 through 6 can be used for setting userdefined communication parameters.

Standard communication setting

To use the standard communication configuration, set switch 5 to the STD COMM position. Setting the switch in this position establishes the following communication parameters:

• HART protocol on the Bell 202 standard, at 1200 baud, on the primary mA output

• Modbus protocol in RTU mode, at 9600 baud, on the RS-485 output

• 1 stop bit, odd parity

For RFT9739 software versions 3.6 and later, if switch 5 is in the STD COMM position, and the RFT9739 has a display, an error message will appear on the display when an attempt is made to change the communication configuration using the RFT9739 display controls.

User-defined communication settings

To establish user-defined settings, set switches as instructed in

Table 2-2

, page 10. With switches 1 through 6, the user can set baud rate; stop bits and parity; data bits, protocol, and physical layer. The default settings are HART protocol, over RS-485, at 1200 baud, with 1 stop bit and odd parity.

Pow er-Supply and

Sensor Wiring

Milliamp output scaling

Switches 7, 8, and 9 allow the user to choose 0-20 mA or 4-20 mA scaling for mA outputs, and upscale or downscale fault outputs.

Switch 7 defines the primary mA output scaling. Switch 8 defines the secondary mA output scaling. Either switch may be set in the 0-20 position or the 4-20 position.

• The mA outputs are NAMUR compliant when switches 7 and 8 are in

the 4-20 position. See

Section 5.3

, page 27.

• Communication using the HART protocol over the primary mA output

requires switch 7 to be set in the 4-20 position.

• If switch 7 is in the 0-20 mA position, communication may be lost if

output is less than 2 mA. T o re-establish communication, move s witch 7 to the 4-20mA position.

Switch 9 defines the RFT9739 fault outputs. Fault outputs can be set for downscale or upscale levels.

• If switch 9 is set to the DWNSCALE position, mA outputs go to 0 mA if

they produce a 0-20 mA current, or to 0-2 mA if they produce a 4-20 mA current; the frequency/pulse output goes to 0 Hz.

• If switch 9 is set to the UPSCALE position, mA outputs go to 22-24 mA;

the frequency/pulse output goes to 15-19 kHz.

• For more information, see "Fault outputs," page 65.

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

continued

Getting Started

Table 2-2. Communications configuration

Instructions

Before beginning, make note of the positions of switches 1, 2, and 3. Then, for each setting:

1. Begin with switch 10 in the CONFIG position, and switches 1 through 6 in the OFF position. The LED flashes ON 3 times and pauses, which indicates th e transm i t te r is i n th e communication configuration mo de.

2. Set designated switches to the ON position as indicated below.

3. Press and hold the ZERO button for five seconds, until the LED remains ON for 3 seconds, which indicates the setting ha s been accepted by the transmitter.

When done:

1. Reset switches 1, 2, and 3 to the appropriate positions.

2. Set switch 5 to the USER DEFINED position.

3. Set switches 4 and 6 to the OFF position.

4. Set switch 10 to the OPERATE position.

Note

If switches 4, 5, 6, and 10 are left in the ON position after configuration, a master reset will occur the next time power to the transmitter is shut off and the n re st or ed. To avoid an unexpected mast er reset, make sure switches 4, 6, and 10 are left in the OFF position after con fig urati on.

Baud rate

1200 baud ON ON 2400 baud ON ON ON 4800 baud ON ON 9600 baud ON ON ON 19,200 baud ON ON ON 38,400 baud ON ON

Stop bits and parity

1 stop bit, no parity ON 1 stop bit, odd parity ON ON 1 stop bit, even parity ON ON ON 2 stop bits, no parity ON ON 2 stop bits, odd parity ON ON ON 2 stop bits, even parity ON ON

Data bits, protocol, physical layer

HART on primary mA ON ON ON ON HART on RS-485 ON ON ON Modbus RTU mode (8 bits) on RS-485 ON ON Modbus ASCII mode (7 bits) on RS-485 ON ON ON Modbus RTU mode (8 bits) on RS-485

and HART on primary mA Modbus ASCII mode (7 bits) on RS-485

and HART on primary mA

Switch

ON ON ON

ON ON ON ON

Switch

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

3 Transmitter Mounting

3.1 General guidelines

Follow these guidelines when installing the field-mount RFT9739 transmitter:

• Locate the transmitter where it is accessible for service and calibration.

• In hazardous areas, install the transmitter in a location that is specified

Section 2.1

• Total length of cable from the sensor to the transmitter must not exceed 1000 feet (300 meters).

• Locate the transmitter where the ambient temperature remains between –22 and 131°F (–30 and 55°C). If the transmitter has a display, the display might become difficult to read below 14°F (–10°C).

• Mount the transmitter to a stable, flat surface or instrument pole.

• The cover of the transmitter housing requires 11½ inches (292 mm) clearance for removal. If the transmitter has a display, the cover requires 13 3/16 inches (335 mm) clearance.

The base of the transmitter has three ¾-inch NPT female conduit openings (see keep the transmitter watertight.

, page 3.

Figure 3-1

, next page), which must remain sealed to

CAUTION

Failure to seal transmitter housing could cause a short circuit, which w ould result i n measuremen t err or or flowmeter failure.

Pow er-Supply and

Sensor Wiring

To avoid risk of condensation or excessive moisture entering the transmitter housing, fully seal all conduit openings when installing the transmitter.

• Install conduit that allows a complete seal with the conduit openings.

• If possible, orient the transmitter with its conduit openings pointed downward. If this is not possible, seal the conduit to prevent condensation and other moisture from entering the housing.

• To comply with CENELEC standards for hazardous area installations in Europe:

Use cable glands or conduit fittings rated flameproof for EEx d IIC areas and certified by an authorized test station. Flameproof glands supplied by Micro Motion meet these requirements.

Conduit openings that are not used should be sealed with blanking plugs of type PLG 2.

For installation in a nonhazardous area, cable glands or conduit fittings that do not carry a flameproof rating are acceptable.

• If the transmitter has a display, the display will be right-side-up only if the transmitter is oriented with its conduit openings pointed downward.

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

Transmitter Mounting

continued

3.2 Mounting to a wall

Figure 3-1. RFT9739 dimensions

4X Ø

inches

(mm)

2 13/16

(71)

23/64

(9)

Dimensions in

Follow these guidelines and refer to

Figure 3-1

to mount the transmitter

to a wall or other flat, rigid surface.

• Use four 5/16-inch diameter (or M8) bolts and nuts to mount the transmitter to a wall or other flat, rigid surface. Use bolts and nuts that can withstand the process environment. Micro Motion does not supply bolts or nuts (such bolts and nuts are available as an option).

• To minimize stress on the housing, secure all four mounting bolts to the same structure, which should be flat and should not vibrate or move excessively. Do not secure bolts to separate girders, beams, or wall studs, which can move independently.

7 19/64

(185)

Optional

display

8 3/8

9 11/64

(213)

4 33/64

(115)

(233)

Sensor cable

conduit opening

3/16

(5)

7 15/64

(184)

2 3/8

(60)

2 3/8

(60)

Power-supply wiring conduit opening

Output wiring conduit opening

3/4"-14 NPT conduit opening

1 17/32

(39)

9 1/8

(232)

Removal of cover required for access to wiring compartments

With

display

13 3/16

(335)

Without

display

11 1/2

(292)

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Transmitter Mounting

continued

3.3 Mounting to an instrument pole

Figure 3-2. Instrument-pole mounting

Dimensions in

inches

(mm)

5/16

(8)

2 13/16

(71)

Follow these guidelines and refer to

Figure 3-2

to mount the transmitter

to an instrument pole:

• Use two 5/16-inch U-bolts for 2-inch pipe, and four matching nuts, to mount the transmitter to a rigid instrument pole. Use U-bolts and nuts that can withstand the process environment. Micro Motion does not supply U-bolts or nuts.

• The instrument pole should extend at least 12 inches (305 mm) from a rigid base, and be no more than 2 inches (50.8 mm) in diameter.

2-inch pipe

Pow er-Supply and

Sensor Wiring

8 3/8 (213)

Output wiring

conduit

Sensor cable wiring conduit

Power-supply wiring conduit

5/16"-18 U-bolt

for 2-inch pipe

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

4 Power-Supply and Sensor

Wiring

4.1 General guidelines

WARNING

Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion.

Sensor wiring is intrinsically safe.

• Keep intrinsically safe sensor wiring separated from power-supply wiring and output wiring.

• For intrinsically safe sensor inst allations, use this document with Micro Motion UL, CSA, or SAA installat ion instructions.

• For hazardous area installations in Europe, refer to standard EN 60079-14 if nation al standards do not apply.

• Make sure the safety barrier partition is in place before operating the transmitter.

CAUTION

Failure to seal transmitter housing and sensor junction box could cause a short circuit, which would result in measurement error or flowmeter failure.

To avoid risk of condensation or excessive moisture in the junction box or transmitter housing:

• Seal all conduit openings.

• Install drip legs in cable or conduit.

• Ensure integrity of gaskets and O-rings, and fully tighten all covers.

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

A removable partition on the electronics module keeps intrinsically safe wiring to the sensor separated from nonintrinsically safe output wiring. The module has a hinged, clear plastic cover. To access power-supply wiring terminals, unlatch the cover of the module, then remove the partition.

Figure 4-1

• the sensor, output wiring terminals, and power-supply wiring terminals.

• Terminal blocks may be unplugged from the module for easier installation of wiring.

• Install cable and wiring to meet local code requirements.

• A switch may be installed in the power-supply line. For compliance with low-voltage directive 73/23/EEC, a switch in close proximity to the transmitter is required for AC-powered transmitters.

• Do not install AC power cable or unfiltered DC power cable in the same conduit or cable tray as sensor cable or output wiring.

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

, page 16, shows the locations of the terminals for wiring to

continued

Power-Supply and Sensor Wiring

Figure 4-1. RFT9739 exploded view

Hinged cover of

electronics module

The base of the transmitter has three ¾-inch NPT female conduit openings, indicated in

Figure 4-1

, which must rem ain seal ed to k eep the

transmitter watertight.

• Use conduit that allows a complete seal with the conduit openings.

• If possible, orient the transmitter with its conduit openings pointed downward. Seal the conduit to prevent condensation and other moisture from entering the housing.

• To comply with requirements for explosion-proof installations approved by UL or CSA, install approved explosion-proof conduit seals on all three conduit openings.

• To comply with CENELEC requirements for installations in Europe, see page 17.

Intrinsically safe

terminals for wiring

to sensor

Partition (safety barrier)

Must be in place during

operation of transmitter

Housing base

Sensor wiring

conduit opening

Power-supply

conduit opening

Electronics module

Non-intrinsically safe output terminals

Power-supply wiring and equipment ground terminals

Output wiring conduit opening

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Power-Supply and Sensor Wiring

Housing cover

Lip

Clamp

Mounting screw

Cap

Threaded hole

Housing base

continued

Installations in Europe

Figure 4-2. Lockout clamp for CENELEC transmitters

To comply with CENELEC standards for hazardous area installations in Europe, adhere to the following CENELEC conditions for safe use:

• Conduit openings that are not used should be sealed with blanking plugs of type PLG 2.

• For installation in a nonhazardous area, cable glands or conduit fittings that do not carry a flameproof rating are acceptable.

A CENELEC-compliant RFT9739 includes a lockout clamp on the transmitter housing. See

Figure 4-2

. The clamp adds secondary protection against accessing the power-supply terminals, and is required to meet CENELEC standards.

Pow er-Supply and

Sensor Wiring

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

Power-Supply and Sensor Wiring

continued

4.2 Power supply and grounding

Power-supply options

Wiring

CAUTION

Incorrect vol tage, or install ation with po wer s upply on, will cause transmitter damage or failure.

• Turn off power before installing transmitter.

• Match power-supply voltage with voltage indicated in transmitter power terminals compartment.

The AC transmitter accepts an 85 to 250 VAC power supply. The DC transmitter accepts a 12 to 30 VDC power supply.

• A label inside the power-supply wiring compartment indicates the correct power-supply voltage.

Figure 4-3

• terminals in the base of the transmitter housing.

• A lockout clamp on the transmitter housing (see provides secondary protection against accessing the power-supply terminals, and is required by CENELEC.

To install power-supply wiring, follow these steps:

1. To access power-supply wiring, unlatch the hinged cover of the

module, then remove the partition that separates intrinsically safe sensor wiring from non-intrinsically safe output wiring.

2. Make input power connections at the two labeled terminals, as

indicated in labeled as follows:

• If the terminals are labeled "L" (line) and "N" (neutral), install an 85 to 250 VAC power supply.

• If the terminals are labeled "+" (positive) and "–" (negative), install a 12 to 30 VDC power supply.

3. Ground the transmitter as instructed on page 19.

(next page) shows the location of power-supply wiring

Figure 4-3

Figure 4-2

(next page). The power supply terminals are

, page 17)

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Power-Supply and Sensor Wiring

Equipment

ground

Power-supply conduit opening

Equipment ground

Transmitter power rating

Terminal

labels

85-250 VAC 50/60 H z L N 12-30 VDC +

−

Figure 4-3. Power-supply wiring terminals

continued

Grounding

WARNING

Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion.

• T he transmitter must be properly grounded.

• Follow the instructions below to ground the transmitter.

• For hazardous area installations in Europe, refer to standard EN 60079-14 if nation al standards do not apply.

To ensure proper grounding:

• If the installation must comply with UL, CSA, or SAA standards, refer to the instructions in one of the following Micro Motion documents:

UL-D-IS Installation Instructions

CSA-D-IS Installation Instructions

SAA-D-IS Installation Instructions

• In most installations, install grounding as illustrated in (next page).

• For installations in Europe, and to comply with CENELEC standards, install grounding as illustrated in

Figure 4-4b

(next page).

• To achieve potential equalization and comply with CENELEC standards for hazardous area installations in Europe, the RFT9739 external ground terminal (see

Figure 4-4b

) should be connected to the appropriate ground terminals within the hazardous area, using a potential equalizing line.

Figure 4-4a

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

continued

Power-Supply and Sensor Wiring

Figure 4-4a. Grounding detail — typical

I.S. ground

terminals

Internal

case ground

terminal

Power ground terminal

Earth ground

Figure 4-4b. Grounding detail — European installations

I.S. ground

terminals

If national standards are not in e ffect, adhere to these guidelines for grounding:

• Use copper wire, 14 AWG (2.5 mm²) or larger wire size.

• Keep all ground leads as short as pos si ble, less than 1 ohm impe dance.

• Connect I.S. ground terminals di r ect l y to in te rnal case ground termi nal.

• Connect ground lead from power ground terminal directly to earth ground.

• Follow plant standards, instead of this standard, if a separate high-integrit y in trinsically safe ground scheme is used.

Internal

case ground

terminal

External ground

terminal

Earth ground

Power ground terminal

If national standards ar e not in effect, adhere to these guidelines for grounding:

• Use copper wire, 14 AWG (2.5 mm²) or larger wire size.

• Keep all ground leads as short as possible, less than 1 ohm impedance.

• A factory-installed ground wire, connecting the I.S. ground and internal case-ground terminals, must remain i n p l ace.

• Connect ground lead from power ground terminal directly to earth ground.

• Follow plant standards, instead of this standard, if a separate high-integr ity intrinsically safe ground scheme is used.

• To achieve potential equalization and comply with CENELEC standar ds for hazardous area installations in Europe, connect the external ground terminal to the appropriate ground terminals withi n t he hazardous area, using a potential equalizing line.

• For hazardous area installation in Europe, use standard EN 60079-1 4 as a guideline.

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Power-Supply and Sensor Wiring

continued

4.3 Sensor wiring

Cable connections to sensor and transmitter

The instructions in this section explain how to connect a fully prepared Micro Motion flowmeter cable to the RFT9739 and a sensor. The sensor can be a Micro Motion ELITE, F-Series, Model D, DT, or DL sensor.

• The procedure for preparing Micro Motion flowmeter cable and cable glands is described in the instructions that are shipped with the cable.

• Install cable and wiring to meet local code requirements.

• Use Micro Motion color-coded cable.

• Total length of cable from the sensor to the transmitter must not exceed 1000 feet (300 meters).

WARNING

Operating the transmitter without covers in place exposes electrical hazards that can cause property damage, injury, or death.

Make sure the safety barrier partition, electronics module cover, and housing cover are securely in place before operating the transmitter.

CAUTION

Failure to seal sensor junction box and transmitter housing could cause a short circuit, which would result in measurement error or flowmeter failure.

Pow er-Supply and

Sensor Wiring

To avoid risk of condensation or excessive moisture in the junction box or transmitter housing:

• Seal all conduit openings.

• Install drip legs in conduit or cable.

• Ensure integrity of gaskets and O-rings, and fully tighten all housing covers.

CAUTION

Improper installation of cable or conduit could cause inaccurate measurements or flowmeter failure.

Keep cable away from devices such as transformers, motors, and power lines, which produce large magnetic fields.

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Power-Supply and Sensor Wiring

continued

The wiring procedure is the same for the sensor and transmitter. Refer to the hazard statements on page 21 and the wiring diagrams below and on page 23, and follow these steps:

1. Insert the stripped ends of the individual wires into the terminal blocks. No bare wires should remain exposed.

• At the sensor, connect wiring inside the sensor junction box.

• At the transmitter, connect wiring to the transmitter's intrinsically

safe terminals for sensor wiring, as numbered in

Table 4-1

Transmitter terminal blocks can be unplugged for easier connection of wiring.

Table 4-1. Terminal designations

Figure 4-5. Wiring to ELITE

CMF sensors

2. Locate the wires by color as indicated in

Table 4-1

3. Tighten the screws to hold the wires in place.

4. Tightly close the sensor junction-box cover and transmitter housing. On an ELITE sensor junction box, tighten all four cover screws.

Wire color

Black* Brown11Drive + Red22Drive – Orange 3 3 T em perature – Yell ow 4 4 Temperature return Green 5 5 Left pickoff + Blue 6 6 Ri gh t pickoff + Violet 7 7 Temperature + Gray 8 8 Right pickoff – White 9 9 Left pickoff –

* C ombined drain wires from brown/re d, green /wh ite, and gray/blue pairs, and

yellow/orange/violet triplet.

Sensor terminal

Transmitter terminal Function

No connection 0 Drain wires*

ELITE® sensor

terminals

Green

White

Brown

Violet

Yellow

Orange

Blue Gray Red

Brown

Clip drain wire back

Red

Green

White

Blue Gray

Orange

Violet

Yellow

Flowmeter

cable

Maximum cable length 1000 ft. (300 m)

Prepare cable in accordance with the

instructions that are shipped with the cable

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Black (Drains from all wire sets)

Brown Red

Green White

Blue Gray

Orange Violet Yellow

Field-mount

RFT9739 terminals

Brown

Orange

Green

Violet White

Gray

Blue

Yellow

Red

Black (Drains)

continued

Power-Supply and Sensor Wiring

Figure 4-6. Wiring to F-Series, Model D, and DL sensors

F-Series, Model D

or DL sensor

terminals

Brown Red Orange Yellow Green Blue Violet Gray White

Clip drain wire back

Maximum cable length 1000 ft. (300 m)

Brown

Red

Green

White

Blue

Gray

Orange

Violet

Yellow

Prepare cable in accordance with the

instructions that are shipped with the cable

Figure 4-7. Wiring to Model DT sensors

Model DT

sensor terminals

User-supplied*

metal junction box with

terminal block

1 2 3 4 5 6 7 8

Sensor wire number

Brown Red Orange Yellow Green Blue Violet Gray White

Earth ground

Clip drain wire back

*In Europe, the DT-sensor junction box is supplied by the factory.

Brown

Red

Green

White

Blue

Gray

Orange

Violet

Yellow

Prepare cab l e in accor dan ce wi th t he in struc tio ns

Flowmeter

cable

Flowmeter

cable

Maximum cable length 1000 ft. (300 m)

that are shipped with the cable

Black (Drains from all wire sets)

Brown Red

Green White

Blue Gray

Orange Violet Yellow

Black (Drains from all wire sets)

Brown Red

Green White

Blue Gray

Orange Violet Yellow

Field-mount

RFT9739 terminals

Brown

Orange

Green

Violet White

Gray Blue

Yellow

Red

Black (Drains)

Field-mount

RFT9739 terminals

Brown

Orange

Green

Violet White

Gray Blue

Yellow

Red

Black (Drains)

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

5 Output Wiring

5.1 General guidelines

WARNING

Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion.

Output wiring is not intrinsically safe.

• Keep output wiring separated from power-supply wiring and intrinsically safe sensor wiring.

• Follow all output wiring instructions to ensure transmitter and any connected devices will operate correctly.

• Make sure the safety barrier partition is in place before operating the transmitter.

A removable partition on the RFT9739 electronics module keeps intrinsically safe wiring to the sensor separated from nonintrinsically saf e output wiring. Use the upper and lower blocks on the right side of the partition for output wiring connections. page) describe terminal designations for the output terminals. Terminal blocks can be unplugged from the module f or easier installation of wiring.

• The RFT9739 has separate conduit openings for power-supply wiring and output wiring.

• To avoid possible electrical interference, do not install output wiring in the same conduit or cable tray as sensor cable or power-supply wiring.

• Use individually shielded pairs of 22 AWG (0.3 mm²) or larger wires for connections between the RFT9739 and any peripheral device.

• Shields and/or drain wires must be terminated outside the transmitter housing, or left floating, as required by the installation.

• To comply with CENELEC standards for hazardous area installations in Europe, nonintrinsically-safe connections between the RFT9739 and other devices may less than or equal to 250 V.

only

be made to devices that maintain a voltage

Figure 5-1

and

Table 5-1

(next

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

5.2 Maximum wire length

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Currently, there is no system for accurately estimating the maximum length of wire between the RFT9739 and a connected peripheral device.

Most applications will be able to use wire lengths up to 500 feet for 22 AWG wire (150 meters for 0.3 mm² wire), 50 feet for 28 AWG wire (15 meters for 0.1 mm² wire), between the transmitter and any peripheral device. However, these distances are estimates only.

Prior to commissioning the transmitter, a loop-test is recommended as a means for determining whether or not output signals are being received correctly at the receiving device.

continued

Output Wiring

Figure 5-1. Output terminals

Table 5-1. Output wiring terminal designations

Terminal Function

14 Frequency out put, DC supply voltage 15 and 16 Frequency/pulse output 17 and 18 Primary variable (PV) mA output 19 and 20 Secondary variable (SV) mA output 21 and 16 Remote zero input 22 and 16 Control output 23 Signal ground 24 and 23 Temperature output 25 and 23 Tube period output 26 and 27 RS-485 I/O P DC power to pressure or DP transmitter S mA input from pressure or DP transm i tter HART Communicator hookup loo ps, sam e as PV mA output circuit

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Output Wiring

continued

5.3 Primary and secondary mA outputs

The RFT9739 primary and secondary mA output signals can be independently configured, and can represent flow, density, temperature, event 1 or event 2. With a pressure transmitter, the primary and secondary output signals can also represent pressure. For information on configuring mA outputs for events, see any of the following manuals or AMS on-line help:

Using the HART Communicator with Micro Motion Transmitters

•

Using ProLink Software with Micro Motion Transmitters

•

Using Modbus Protocol with Micro Motion Transmitters

• The mA outputs can produce a user-selected 0-20 or 4-20 mA current.

(See "Milliamp output scaling," page 9).

• When configured to produce 4-20 mA current, the mA output loop can supply loop-powered process indicators.

For transmitters with software version 3.8 or higher,

•

when configured to produce 4-20 mA current, the mA outputs are compliant with the NAMUR NE43 standard. (All RFT9739 transmitters shipped after November 1999 have software version 3.8 or higher.)

CAUTION

Milliamp output range has changed.

When configured for 4-20 mA, milliamp outputs will not output live signals between 2.0 and 3.8 mA, or between

20.5 and 22 mA.

Pow er-Supply and

Sensor Wiring

In compliance with the NAMUR NE43 standard:

• 4-20 mA outputs will produce a live signal from 3.8 to 20.5 mA.

• 4-20 mA outputs will not produce a signal between 2.0 and 3.8 mA, or

• 4-20 mA output performance is illustrated in

Figure 5-2. 4-20 mA output performance

Downscale fault indication level

Systems that rely on milliamp output signals in the ranges listed above might not perform as expected. For RFT9739 transmitters shipped after November 1999, outputs will saturate at 3.8 and 20.5 mA, unlike previous versions of these instruments.

Reconfigure systems as necessary.

between 20.5 and 22 mA.

Figure 5-2

Upscale

fault indication level

Operating range (live si gnal)

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

2 3.8 2220.5

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Output, mA

continued

Output Wiring

Use RFT9739 terminals 17 and 18 for the primary mA output. Use terminals 19 and 20 for the secondary mA output. See

• Primary and secondary mA output loops are isolated and floating. Additional grounding will result in optimum performance, and optimum HART communication on the primary mA output. Ensure that mA output loops are grounded properly, either at the transmitter end, or at the external device.

• The maximum allowable length for mA signal wiring is determined by measuring resistance over the signal wires and through the receiver device. Total loop resistance must not exceed 1000 ohms.

• The primary mA output must be set to the 4-20 mA mode for the Bell 202 physical layer. The Bell 202 layer will not work with the primary mA output configured as a 0-20 mA output.

• The mA output cannot be converted from active to passive.

Figure 5-3. Primary and secondary mA output wiring

PV+ (signal line) PV– (return)

Figure 5-3

RFT9739 output terminals

SV+ (signal line) SV– (return)

PV = Primary variable SV = Secondary variable

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Output Wiring

continued

Connections for HART® communication devices

Figure 5-4

ProLink PC-Interface adaptor, or an AMS serial modem to the RFT9739

illustrates how to connect a HART Communicator, the

for digital communication over the primary mA output. For information about using the HART Communicator or ProLink program, see the appropriate instruction manual. For AMS software, use the AMS on-line help:

Figure 5-4. HART® Communicator, ProLink® PC-Interface, and AMS modem connections

Field-mount

RFT9739

PV terminals

17 and 18

Communicator loops

(same circuit as PV terminals)

HART

Communicator,

ProLink PCI,

or AMS modem

PV+

Communicator loops

or PV terminals

PV–

(Note 1)

(Note 3)

Pow er-Supply and

Sensor Wiring

DCS or PLC

with internal

resistor

(Note 2)

1. If necessary, add resistance in the loop by installing resistor R1. SMART FAMILY® devices require a minimum loop resistance of 250 ohms. Loop resistance must not exceed 1000 ohms, regardless of the communication setup.

CAUTION

Connecting a HART device to the RFT9739 primary variable milliamp output loop could cause transmitter output error.

If the primary variable (PV) analog output is being used for flow control, connecting a HART device to the output loop could cause the transmitter 4-20 mA output to change, which would affect flow control devices.

Set control devices for manual operation before connecting a HART device to the RFT9 739 primary variable milliamp output loop.

2. The DCS or PLC must be configured for an active milliamp signal.

3. Resistor R3 is required if the DCS or PLC does not have an internal resistor.

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

Output Wiring

continued

5.4 Frequency/pulse output

The RFT9739 frequency/pulse output represents the flow rate or flow total, independent of the primary and secondary mA outputs. The frequency/pulse output can be used with any Micro Motion peripheral device except the DMS Density Monitoring System and the PI 4-20 Process Indicator, which do not have frequency inputs.

The frequency/pulse output can be configured to provide any one of the following:

• Mass flow rate

• Volume flow rate

• Mass flow total

• Volume flow total Mass flow total and volume flow total are not available with some

RFT9739 transmitters shipped prior to 1998. Use RFT9739 terminals 15 and 16 for the frequency/pulse output. The

frequency/pulse output, control output, and external zero input share terminal 16 as a common return. See

Figure 5-5

, page 31.

• The frequency/pulse output loop is isolated and floating from other circuits except the control output and external-zero input circuits. Ensure that the frequency/pulse output loop is grounded properly, either at the transmitter end, or at the external device.

• The frequency output circuit uses a 2.2 kohm resistor tied to a 15-volt source that limits the current to 7 mA. The output circuit is rated to 30 VDC, with 0.1 ampere maximum sinking capability, when used in the open collector mode. Open collector mode is described on page 33.

• Transmitter output is a nominal +15 V square wave, unloaded. Any load will decrease the peak voltage level.

• Output impedance is 2.2 kohm.

• For use with receivers other than Micro Motion peripheral devices, check the instruction manual for the receiver to make sure its inputvoltage and electrical-current ratings match the RFT9739 frequency/pulse output ratings.

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Output Wiring

continued

Default configuration

When the RFT9739 is shipped from the factory, the frequency/pulse output is internally powered by an isolated 15-volt source via a 2.2 kohm pull-up resistor. This internal current is limited to approximately 7 mA. See

Configuration for increased current

In some applications, it might be necessary to increase the current in the frequency/pulse output circuit. See current, add a 1 to 3 kohm resistor across terminals 14 and 15, as illustrated in

Figure 5-5. Frequency/pulse output wiring

Figure 5-5

Figure 5-6

FREQ+ (signal line)

RETURN (ground)

RFT9739 output terminals

Section 5.2

, page 25. For increased

PLC

pulse counter

Pow er-Supply and

Sensor Wiring

Figure 5-6. Frequency/pulse output wiring for increased current

FREQ+ (signal line)

RETURN (ground)

1 to 3 kohm

resistor

RFT9739 output terminals

PLC

pulse counter

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Output Wiring

continued

Configuration for constant current

Applications with high capacitance loading will benefit by wiring the frequency/pulse output circuit to maintain a constant current source of 50 mA for any load between 0 and 220 ohms. This configuration renders the control output circuit inoperable.

For constant current, add a jumper across terminals 14 and 15, and a 100 to 250 ohm resistor at the PLC or pulse-counter end of the cable, as illustrated in

Adding a jumper across terminals 14 and 15 renders the control output circuit inoperable.

Do not attempt to use the control output circuit after you add a jumper across terminals 14 and 15.

Figure 5-7

The control output can be reconfigured to function properly, independent of this frequency/pulse wiring procedure. See "Control output in open collector mode," page 36.

Figure 5-7. Frequency/pulse output wiring for constant current

CAUTION

FREQ+ (signal line)

100 to 250 ohm

RETURN (ground)

RFT9739 output terminals

PLC

pulse counter

resistor

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Output Wiring

continued

Configuration for open collector mode

The RFT9739 provides current to the frequency/pulse output circuit. In applications where this current must be permanently suspended, and for receiving devices that require input voltage higher than approximately 10 volts, the frequency/pulse output circuit can be used in open collector mode.

To configure the output for open collector mode, a resistor must be clipped as described below.

This procedure will permanently alter the

transmitter and cannot be reversed.

• Clip resistor R14 (R1 on models with enhanced EMI immunity) and add an external DC power supply and a pull-up resistor. See

Figure 5-8

• The pull-up resistor must be of sufficient value to limit loop current to less than 0.1 ampere, depending on the total loop resistance at the transmitter.

• Resistor R14 (R1) is located on the RFT9739 output board, behind the output terminal blocks, as illustrated in

Figure 5-9

. To access resistor

R14 (R1), unplug the output terminal blocks from the transmitter.

CAUTION

Clipping resistor R14 or R1 will eliminate the internal voltage source from the transmitter.

After clipping resi stor R14 or R 1, an external power supply is required to use the transmitter’s frequency/pulse output.

Pow er-Supply and

Sensor Wiring

Before permanently altering any equipment, contact the Micro Motion Customer Service:

• In the U.S.A., phone 1-800-522-6277

• Outside the U.S.A., phone 303-530-8400

• In Europe, phone +31 (0) 318 549 443

• In Asia, phone 65-770-8155

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

continued

Output Wiring

Figure 5-8. Frequency/pulse output wiring for open collector mode

FREQ+ (signal line)

RETURN (ground)

Resistor

(See note)

RFT9739 output terminals

Resistor must be of sufficient value to limit loop current to less than 0.1 ampe re, depending on total loop resistan ce.

Figure 5-9. Location of resistor R14 (R1) on output board

CAUTION: After clipping resistor R14 or R1, an external power supply is required to use the transmitter’s frequency pulse output. See page 33.

PLC

pulse counter

DC power supply

Resistor R14 or R1

Connectors behind output terminal blocks

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Output Wiring

continued

5.5 Control output

The control output can indicate flow direction, transmitter zeroing in progress, pressure input failure, faults, event 1 or event 2. For information on configuring the control output for events, see any of the following manuals or AMS on-line help:

Using the HART Communicator with Micro Motion Transmitters

•

Using ProLink Software with Micro Motion Transmitters

•

Using Modbus Protocol with Micro Motion Transmitters

•

Use RFT9739 terminals 22 and 16 for the control output. The control output, frequency/pulse output, and external zero input share terminal 16 as a common return. See

Figure 5-10

• When configured to indicate flow direction, the output is high (+15 V) when indicating forward flow, and low (0 V) when indicating reverse flow .

• When configured to indicate transmitter zeroing in progress, the output is low (0 V) when zeroing is in progress and high (+15 V) at all other times.

• When configured to indicate faults, the output is low (0 V) when a fault condition exists and high (+15 V) during normal operation.

• When configured to indicate event 1 or event 2, the output switches ON (0 V) or OFF (+15 V) when the flow rate, flow total, density, temperature, or pressure of the process fluid achieves a programmed setpoint.

• The output circuit is rated to 30 VDC, with 0.1 ampere maximum sinking capability, when used in open collector mode. Open collector mode is described on page 36.

• Transmitter output is nominal 0 or +15 V, unloaded.

• Output impedance is 2.2 kohm.

Pow er-Supply and

Sensor Wiring

Figure 5-10. Control output wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 output terminals

RETURN (ground) CONTROL (signal line)

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Output Wiring

continued

Control output in open collector mode

The RFT9739 provides current to the control output circuit. In applications where this current must be permanently suspended, and for receiving devices that require input voltage higher than approximately 10 volts, the control output circuit can be used in open collector mode.

If the frequency/pulse output is configured for constant current (see "Configuration for open collector mode," page 33), the control output is rendered inoperable. To reconfigure the control output to function properly, independent of this frequency/pulse output configuration, the control output circuit can be configured for open collector mode.

To configure the control output for open collector mode, a resistor must be clipped as described below.

This procedure will permanently alter

the transmitter and cannot be reversed.

• Clip resistor R15 (R2 on models with enhanced EMI immunity) and add an external DC power supply and a pull-up resistor. See

Figure 5-11

page 37.

• The pull-up resistor must be of sufficient value to limit loop current to less than 0.1 ampere, depending on the total loop resistance at the transmitter.

• Resistor R15 (R2) is located on the RFT9739 output board, behind the output terminal blocks, as illustrated in

Figure 5-12

, page 37. To access resistor R15 (R2), unplug the output terminal blocks from the transmitter.

CAUTION

Clipping resistor R15 or R2 will eliminate the internal voltage source from the transmitter.

After clipping resi stor R15 or R 2, an external power supply is required to use the transmitter’s control output.

Before permanently altering any equipment, contact the Micro Motion Customer Service:

• In the U.S.A., phone 1-800-522-6277

• Outside the U.S.A., phone 303-530-8400

• In Europe, phone +31 (0) 318 549 443

• In Asia, phone 65-770-8155

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

continued

Output Wiring

Figure 5-11. Control output wiring for open collector mode

Resistor

(See note)

Resistor must be of sufficient value to limit loop current to less than 0.1 ampe re, depending on total loop resistan ce.

Receiving

device

DC power supply

RFT9739 output terminals

Figure 5-12. Location of resistor R15 (R2) on output board

CAUTION: After clipping resistor R15 or R2, an external power supply is required to use the transmitter’s frequency pulse output. See page 36.

Pow er-Supply and

Sensor Wiring

Resistor R15 or R2

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

Connectors behind output terminal blocks

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Output Wiring

continued

5.6 Peripheral device wiring

Table 5-2. Peripheral wiring diagrams

Figure 5-13. Wiring to DMS

RFT9739

output terminals

The wiring diagrams listed in

Table 5-2

illustrate connections from the

transmitter to Micro Motion peripheral devices.

Micro Motion peripheral device Figure Page

DMS Density Monitoring System 5-13 38 DRT Digital Rate Totalizer with LED display 5-14a 39 DRT Digital Rate Totalizer with LCD display 5-14b 39 FMS-3 Flow Monitoring System with LED display 5-15a 40 FMS-3 Flow Monitoring System with LCD display 5-15b 40 NFC Net Flow Computer 5-16 41 NOC Net Oil Computer with AC power supply 5-17a 42 NOC Net Oil Computer with DC power supply 5-17b 42 Model 3300 Discrete Controller with screw/solder terminals 5-18a 43 Model 3300 Discrete Controller with I/O cable 5-18b 43 Model 3350 Discrete Co nt ro ller 5-19 43

DMS

terminals

1. Clip shields at this end.

2. This wire not terminated.

Note 2

Note 1

Note 2

Earth

ground

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

continued

Output Wiring

Figure 5-14a. Wiring to DRT with LED

RFT9739 output terminals

Clip shields at this end

Figure 5-14b. Wiring to DRT with LCD

DRT LED

terminals

Earth ground

RFT9739 output terminals

Clip shields at this end

Earth ground

DRT LCD terminals

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

continued

Output Wiring

Figure 5-15a. Wiring to FMS-3 with LED

RFT9739 output terminals

Clip shields at this end

Figure 5-15b. Wiring to FMS-3 with LCD

FMS-3 LED

terminals

Earth

ground

RFT9739 output terminals

Clip shields at this end

FMS-3 LCD

terminals

Earth

ground

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

continued

Output Wiring

Figure 5-16. Wiring to NFC

RFT9739 output terminals

NFC

terminals

Note 1

Note 2

1. Clip shields at this end.

2. This wire not terminated.

Note 1

Note 2

Earth

ground

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

continued

Output Wiring

Figure 5-17a. Wiring to AC-powered NOC

RFT9739 output terminals

Note 1

Note 2

Note 1

NOC

terminals

Note 1

Note 2

Earth

ground

1. Clip shields at this end.

2. This wire not terminated.

Figure 5-17b. Wiring to DC-powered NOC

RFT9739 output terminals

Note 1

Note 2

Note 1

NOC

terminals

Note 2

1. Clip shields at this end.

2. This wire not termi nat e d.

Earth ground

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

continued

Output Wiring

Figure 5-18a. Wiring to Model 3300 with screw-type or solder-tail terminals

RFT9739 output terminals

Model 3300

terminals

Clip shields at this end

Earth

ground

Figure 5-18b. Wiring to Model 3300 with I/O cable

Clip shields at this end

Earth ground

RFT9739 output terminals

Figure 5-19. Wiring to Model 3350

RFT9739 output terminals

Clip shields at this end

Pow er-Supply and

Sensor Wiring

Model 3300 terminals

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

Model 3350

terminals

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Earth ground

Output Wiring

continued

5.7 Pressure transmitter wiring

WARNING

Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion.

Pressure transmitter wiring is not intrinsically safe.

• Keep pressure transmitter wiring separated from powersupply wiring, intrinsically safe sensor wiring, and any other intrinsically safe wiring.

• Make sure the safety barrier partition is in place before operating the transmitter.

The RFT9739 accepts input signals from a pressure transmitter for pressure compensation.

• If a pressure transmitter connected to a host controller measures gauge pressure at the sensor input, the RFT9739 can compensate for the pressure effect on the sensor. Pressure compensation is required only for sensor models listed in

• Instructions for wiring the RFT9739 to a pressure transmitter are provided below. Instructions for configuring the RFT9739 for pressure compensation are provided in the following instruction manuals and in the AMS on-line help:

Using the HART Communicator with Micro Motion Transmitters

Using ProLink Software with Micro Motion Transmitters

Using Modbus Protocol with Micro Motion Transmitters

Table 5-3

Table 5-3. Sensors affected by pressure

The RFT9739 pressure input terminals (P and S) are intended for use with a pressure transmitter, and should not be connected to a control system.

If the RFT9739 is configured for pressure compensation, flowmeter measurement will not be compensated for pressure during a pre ssure input failure. If the signal from the pressure transmitter fails, both of the following occur:

• The RFT9739 continues to operate in non-fault mode.

• A "Pressure Input Failure" message is shown on the transmitter display (if it has one), a HART Communicator with the latest memory module, ProLink software version 2.4 or higher, or AMS software.

ELITE F-Series Model D and DL

CMF025 (density only ) CMF050 (density only ) CMF100 CMF200 CMF300 CMF400

F025 (density only) F050 F100 F200

D300 standard model D300 Tefzel D600 DL100 DL200

model

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

continued

Output Wiring

If the pressure transmitter requires a power supply less than or equal to 11.75 V,

the RFT9739 can power the pressure transmitter. Use RFT9739 terminals P and S. Terminal P (MA PWR OUT) is the power output to the pressure transmitter, and terminal S (MA SIG IN) is the signal input to the RFT9739, as shown in

If the pressure transmitter requires a power supply greater than

11.75 V,

or if other loop devices are required, an external source can power the pressure transmitter. Use RFT9739 terminals S and 23. Terminal S (MA SIG IN) is the signal input to the RFT9739, and terminal 23 (SIGNAL GND) is the return, as shown in

If digital communication between the pressure transmitter and the RFT9739 is required,

as shown in

Figure 5-20c

Figure 5-20a. Wiring to pressure transmitter — analog input

WARNING: Pressure transmitter wiring is not intrinsically safe

Figure 5-20a

Figure 5-20b

use RFT9739 terminals 17 (PV+) and 18 (PV–),

, page 46.

RFT9739

output terminals

Figure 5-20b. Wiring to pressure transmitter — external power, analog input

WARNING: Pressure transmitter wiring is not intrinsically safe

RFT9739

output terminals

Pressure

transmitter

Pressure

transmitter

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

Optional

loop device(s)

4-20 mA

Terminal 23 must be connected directly to the negative (–) terminal of the external power supply .

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

24 VDC

Power

supply

continued

Output Wiring

Figure 5-20c. Wiring to pressure transmitter — digital communications

WARNING: Pressure transmitter wiring is not intrinsically safe

250 ohm ±5%, 0.5 W

Pressure transmitter

SMART only (1150 or 3051)

250 ohm ±5%,

0.5 W

5.8 Remote-zero switch

The tran smitter can be confi gured to allow transmitter zeroing from an external switch. The switch must be a momentary-type contact, normally open, and must carry 1 mA of current in the closed position. The open circuit voltage is 5 VDC.

Use terminals 21 and 16 for the remote switch. The remote-switch input, frequency/pulse output, and control output share terminal 16 as a common return. See

Section 6.4

Figure 5-21. Wiring to remote-zero switch

RFT9739

output terminals

Figure 5-21

24 VDC

Power

supply

, page 57, describes the flowmeter zeroing procedure.

Remote

switch

RETURN (ground)

RFT9739 output terminals

ZERO+ (signal line)

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Output Wiring

continued

5.9 RS-485 multidrop network

The RFT9739 can be configured to communicate for any one of the following options:

• HART protocol over the RS-485 standard

• HART protocol over the Bell 202 standard

• Modbus protocol over the RS-485 standard

• Modbus protocol over the RS-485 standard and HART protocol over

the Bell 202 standard

For communications configuration instructions, see "Communication settings," page 9. For Bell 202 network wiring, see

Section 5.10

page 48. Multiple transmitters can participate in an RS-485 multidrop network that

uses HART or Modbus protocol.

• Under HART protocol, an almost unlimited number of transmitters can

participate in the network. Each transmitter must have a unique tag name. If polling addresses are used, up to 16 transmitters can have unique polling addresses from 0 to 15.

• Under Modbus protocol, up to 247 transmitters can participate in the

network. Each transmitter must have a unique polling address from 1 to 247.

To connect the transmitter to an RS-485 network, use RFT9739 terminals 27 and 26.

Figure 5-22

shows how to connect one RFT9739 or multiple RFT9739 transmitters to a host controller for RS-485 serial communication.

• Install twisted-pair, shielded cable, consisting of 24 AWG (0.25 mm²) or

larger wire, between the RFT9739 and an RS-485 communication device. Maximum cable length is 4000 feet (1200 meters).

• Some installations require a 120-ohm, ½-watt resistor at both ends of

the network cable to reduce electrical reflections.

Pow er-Supply and

Sensor Wiring

For information on communication protocol requirements for implementing an RS-485 network, phone the Micro Motion Customer Service Depa rtment:

• In the U.S.A., phone 1-800-522-6277, 24 hours

• Outside the U.S.A., phone 303-530-8400, 24 hours

• In Europe, phone +31 (0) 318 549 443

• In Asia, phone 65-770-8155

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

continued

Output Wiring

Figure 5-22. RS-485 wiring

One RFT9739 and a host controller

Host

controller

Multiple RFT9739s and a host controller

Host

controller

A B

See note

27 26

RFT9739

27 26

RFT9739

For long-distance communication, or if noise from an external source interferes with the signal, install 120-ohm ½-watt resistors across terminals of both end devices.

5.10 Bell 202 multidrop network

The RFT9739 can be configured to communicate for any one of the following options:

27 26

RFT9739

• HART protocol over the RS-485 standard

• HART protocol over the Bell 202 standard

• Modbus protocol over the RS-485 standard

• Modbus protocol over the RS-485 standard and HART protocol over the Bell 202 standard

For communications configuration instructions, see "Communication settings," page 9. For RS-485 network wiring, see

Devices in a Bell 202 multidrop network communicate by sending and receiving signals to and from one another. HART protocol supports up to 15 transmitters in a Bell 202 multidrop network. The actual maximum number depends upon the type of transmitters, the method of installation, and other external factors. Other Rosemount SMART FAMILY transmitters can also participate in a HART-compatible network.

• A Bell 202 multidrop network uses twisted-pair wire, and allows only digital communication. Digital communication requires a sample rate of 2 to 31 seconds at 1200 baud.

• A HART Communicator or other HART-compatible control system can communicate with any device in the network over the same 2-wire pair.

Section 5.9

, page 47.

Using multiple transmitters in a HART-compatible network requires assigning a unique address from 1 to 15 to each transmitter.

• Assigning an address of 1 to 15 to the transmitter causes the primary mA output to remain at a constant 4 mA level.

• The primary mA output must produce a 4-20 mA current for the Bell 202 physical layer . The Bell 202 lay er will not work with the primary mA output configured as a 0-20 mA output when the current output is 0mA.

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

continued

Output Wiring

To connect the transmitter to a Bell 202 network, use RFT9739 terminals 17 and 18. See

• SMART FAMILY devices require a minimum loop resistance of 250 ohms. Loop resistance must not exceed 1000 ohms.

• Connect the mA outputs from each transmitter together so they terminate at a common load resistor, with at least 250 ohms impedance, installed in series.

Figure 5-23. Typical HART® network wiring

Figure 5-23

HART

Communicator,

ProLink PCI,

or AMS modem

250 ohm

load

4-20mA

IFT9701

For optimum HART communication, make sure the output loop is single-point grounded to instrument grade ground.

RFT9739

field-mount

PV+17PV–

4-20mA

R-Series

RFT9739

rack-mount

PV+

PV–

CN2-

Z30

D30

SMART

FAMILY

transmitter

DC source required for other HART 4-20mA passive transmitters

SMART

FAMILY

transmitter

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

6 Startup

6.1 Initialization

Initialization with display

After wiring has been connected, power can be supplied to the transmitter. During initialization, the diagnostic LED on the electronics module remains on continuously, while the transmitter performs a selfdiagnostic. After initialization is completed, the LED blinks ON once per second to indicate proper operation of the transmitter.

For DC-powered transmitter s

must provide a minimum of 1.6 ampere of inrush current at a minimum of 12 volts at the transmitter's power input terminals.

If the transmitter has a display, during initialization the display will show, sequentially:

1. All pixels on

2. All pixels off

3. All eig hts

4. All pixels off

5. Copyright notification

After the self-test is complete, one of ten possible process variable screens, such as the one depicted below, appears:

If the flowmeter is operating properly, the blinking "Msg" (message) indicator appears in the bottom right corner of the screen to indicate power has been cycled.

• To clear the "Msg" indicator, repeatedly rotate the Scroll knob until the display reads "Sensor OK *POWER / RESET*".

• To clear the message, rotate the Scroll knob.

, at startup, the transmitter power source

INV: GRAMS:

38450.5 Msg

Pow er-Supply and

Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

If the message does not clear, or if error messages appear, refer to

Section 7.4

error messages.

6.2 Using the optional display

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

The optional RFT9739 display enables the user to:

• View process variables, flow totals and inventory levels, and status messages (see page 52)

• Set communication parameters (see page 54)

• Zero the flowmeter (see page 57)

• Reset the transmitter's flow totalizers (see page 60)

Use the Scroll and Reset knobs to operate the display.

, page 68, which provides an overview of diagnostic and

Startup

continued

Adjusting the sight window

The sight window in the transmitter housing cover enables the user to view the LCD on the electronics module inside the housing. After the cover has been put in place, the sight window might not be properly aligned for viewing the display. To align the sight window, rotate the adjustable faceplate in either direction until the entire display is visible.

Micro Motion recommends mounting the transmitter with its conduit openings pointed downward. In such installations, the sight window will be properly aligned when it is directly above the Scroll and Reset knobs.

CAUTION

Rotating the transmitter housing cover or adjustable faceplate could cause the display to change, the flowmeter to be zeroed, or totalizers to be reset.

Rotating the transmitter cover actuates the Scroll and Reset knobs, whic h w i ll af fect the screen that is displ ayed, and could zero the flowmeter or reset the transmitter flow totalizers.

Adjustable faceplate

Transmitter housing cover

Process variables mode

• Do not rotate the transmitter housing cover or adjust the faceplate while R ATE, TO T, or INV screens are displ ayed.

• Security settings that prevent the use of scroll and reset knobs also prevent this situation from occurring. See

Section 2.3

, page 5.

After power to the transmitter is turned off and on, or "cycled," the transmitter is in the process variables mode. The first screen that appears is the last process variable screen that was viewed before power was cycled. In the process variables mode, each screen indicates the value and measurement unit for a process variable.

As the user scrolls through the process variable screens, they appear in the order listed in

Table 6-1

, page 53.

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Startup

continued

Table 6-1. Display screens

Screen Process variable

1 M a ss flow rate (RATE) 2 Volume flow rate (RATE) 3 Density (DENS) 4 Temperature (TEMP) 5 Mass total 6 Volume total 7 Mass inventory 8 Volume inventory 9 Differential pr essure or

10 Configuration event register 11 Cal i brati on event register 12 Display test 13 M es sage (if any)

While reading total (TOT) or inventory (INV) screens, use the unit of measur e in the

gauge pressure

[1]

[2]

[3]

Abbreviation in upper left corner of screen

(TOT) (TOT) (INV) (INV) (DP) or

(P)

[3]

(CONFIG REG) (CALIBRATE REG) (DISPLAY TEST)

– –

lower left corner to dist inguish between mass and volume.

Screen appears only when transmitter is configured to indicate pressure.

Screen appears only when transmitter is configured for securi t y m od e 8. S ee Section 2.3, page 5, for information ab out security modes.

When displaying total (TOT) or inventory (INV) screens, display resolution is 10 places, including the decimal point. The position of the decimal point is fixed, and depends on the flow calibration factor and units of measure. If totalizers exceed the maximum display capability, the display reads "*********". Clear the message with the Reset knob.

Pow er-Supply and

Sensor Wiring

If a message exists, the blinking "Msg" (message) indicator appears in the bottom right corner of each screen, indicating any of the following conditions:

• Power to the transmitter has been cycled.

• The flowmeter has been zeroed.

• An error condition exists. To read a message, scroll past all process variable screens to the

message screen (see

Table 6-1

). Uncorrected status conditions remain in the message queue. Other messages are cleared when the Scroll knob is used to scroll past the message screen to the flow rate screen.

If power to the transmitter has been cycled and the transmitter is operating properly, the message reads

For more information about messages, refer to

"Sensor OK *POWER/RESET*"

Section 7.4

, page 68.

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Startup

continued

Communication configuration mode

Switch 5 on the transmitter electronics module allows the user to select the standard communication configuration or establish a user-defined configuration. The communication configuration mode allows the user to configure the transmitter's digital output using the display and the Scroll and Reset knobs.

• If switch 5 is in the USER DEFINED position (see page 5), enter the communication configuration mode from any process variable screen by rotating and holding the Scroll knob, then rotating the Reset knob. In the communication configuration mode, "M1", "M2", or "M3" appears in the upper left corner of the screen.

• For RFT9739 software versions 3.6 and later, if switch 5 is in the STD COMM position, an error message will be displayed if an attempt is made to change the communication configuration using the RFT9739 display controls.

• Hardware switches can also be used for configuring the transmitter's digital communication output. For more information about using hardware switches, see

M1 — Baud rate

To set the baud rate:

1. Rotate and release the Scroll knob to view each baud rate option.

Choose from 1200, 2400, 4800, 9600, 19200, or 38400 baud.

2. Rotate and hold the Reset knob to select the displayed baud rate.

Release the Reset knob when the display stops flashing.

Section 2.3

, page 5.

Section 2.3

3. When the selected baud rate flashes again, rotate and release the

Reset knob to move to the M2 screen.

M2 — S=Stop bits, P=Parity

To set the stop bits and parity:

1. Rotate and release the Scroll knob to view each stop bit (S) option.

Choose 1 stop bit or 2 stop bits.

2. Rotate and hold the Reset knob to select the displayed stop bit.

Release the Reset knob when the display stops flashing.

3. When the selected stop bit flashes again, rotate and release the

Reset knob to move to the parity (P) options.

4. Rotate and release the Scroll knob to view each parity (P) option.

Choose from odd parity (O), even parity (E), or no parity (N). HART protocol requires odd parity; Modbus protocol requires odd parity, even parity, or no parity, depending on the host controller.

5. Rotate and hold the Reset knob to select the displayed parity.

Release the Reset knob when the display stops flashing.

6. When the selected parity flashes again, rotate the Reset knob to

move to the M3 screen.

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Startup

continued

M3 — Data bits, protocol, and physical layer

The M3 screen enables selection of 7-bit or 8-bit mode for Modbus protocol, or 8-bit mode for HART protocol.

• The HART protocol can use either the Bell 202 or RS-485 physical layer.

• Using HART protocol over the primary mA output requires the Bell 202 physical layer.

CAUTION

Changing the protocol or data bits will cause the process to shut down and the transmitter to initialize as described on page 51, which could result in switching of flow loop control devices.

Set control devices for manual operation before changing the communications protocol.

To set the data bits and protocol:

1. Rotate and release the Scroll knob to view each data bits (D) option.

Choose from 7 data bits or 8 data bits. HART protocol requires 8 data bits; Modbus protocol requires 7 data bits for ASCII mode or 8 data bits for RTU mode.

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Sensor Wiring

2. Rotate and hold the Reset knob to select the displayed data bits.

Release the Reset knob when the display stops flashing.

3. When the selected data bits flashes again, rotate and release the

Reset knob to move to the protocol and physical layer options.

4. Rotate and release the Scroll knob to view each protocol/physical

layer option. Choose from the following:

• HART protocol over the Bell 202 physical layer (HART/202)

• HART protocol over the RS-485 physical layer (HART/485)

• Modbus protocol over the RS-485 physical layer (Modbus/485)

• Modbus protocol over the RS-485 physical layer and HART protocol over the Bell 202 physical layer (Modbus/202)

5. Rotate and hold the Reset knob to select the displayed protocol/physical layer. Release the Reset knob when the display stops flashing.

6. When the selected protocol/physical layer flashes again, rotate and release the Reset knob to restart the transmitter. If the protocol/physical layer was not changed, the transmitter will not restart, and display will return to the process variable screen.

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Startup

continued

6.3 Custody transfer event registers

Event registers are provided for security requirements for custody transfer applications. When the transmitter is configured for security mode 8 (see

Section 2.3

, page 5), the transmitter meets security requirements for custody transfer described in National Institute of Standards and Technology (NIST) Handbook 44.

Custody transfer event registers record one change for each change "session." A change session begins when the transmitter is taken out of security mode 8, and ends when security mode 8 is reentered. To begin a change session, set switches 1, 2, and 3 to the OFF position. A change session ends when switches 1, 2, and 3 are reset to the ON position. After a change session is ended, security event registers will increase by one (1) if any of the parameters listed in

Table 6-2

have

been changed.

• Each register will increase up to 999, then roll over to zero.

• Custody transfer event registers cannot be reset. View the security event registers using any of the following methods:

• With the RFT9739 display. If the transmitter has a display, event

registers can be viewed from the CONFIG REG and CALIBRATE REG screens when the transmitter is configured for security mode 8.

• With a HART Communicator.

• With a HART-compatible or Modbus-compatible master controller.

• With ProLink software version 2.3 or higher. Refer to on-line help for

instructions.

• With AMS software. Refer to on-line help for instructions.

Table 6-2. Parameters that affect event registers

Configuration register

Mass flow cutoff Flow damping Volume flow cutoff Flow direction Primary m A scaling factors Secondary mA scaling factors

Calibration regist er

Mass flow units Volume flow units Auto zero calibration Density calibration Flow calibration factor Meter factors Frequency output scaling factors

• Freque nc y

•Rate

Primary m A output trim Secondary mA output trim Primary m A output assignment Secondar y m A out put assignment Control output assignment Master reset

Density calibration factors

• Density A and Density B

• K1, K2, and FD

• Density temperature coefficie nt Pressure compensa tion factors

•Flow factor

• Density factor

• Flow calibration pressure

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Startup

continued

6.4 Flowmeter zeroing

Zeroing procedure

CAUTION

Failure to zero the flowmeter at initial startup could cause the transmitter t o produce inaccurate signals.

Zero the flowmeter before putting the flowmeter in operation.

Flowmeter zeroing establishes flowmeter response to zero flow and sets a baseline for flow measurement.

To zero the transmitter, follow these steps:

1. Prepare the flowmeter for zeroing: a. Install the sensor according to the sensor instruction manual. b. Apply power to the transmitter, then allow it to warm up for at least

30 minutes.

c. Ensure the transmitter is in a security mode that allows flowmeter

zeroing (see "Security modes," page 5).

d. Run the process fluid to be measured through the sensor until the

sensor temperature reading approximates the normal process operating temperature.

e. Ensure that the sensor is completely filled with fluid.

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Sensor Wiring

2. Close the shutoff valve downstream from the sensor.

3. Ensure zero flow through the sensor.

CAUTION

Flow through the sensor du ring flo wmeter zer oin g will result in an inaccurate zero setting.

Make sure the sensor tubes are completely full and fluid flow through the sensor is completely stopped during flowmeter zeroing.

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Startup

continued

4. Zero the transmitter in any of five ways:

• Press and hold the ZERO button for at least ten seconds or until the LED remains on continuously.

Figure 6-1

, page 58, shows the

location of the button on the electronics module.

• If the transmitter has a display , use the Scroll knob to advance to the mass flow rate screen or volume flow rate screen, then rotate and hold the Reset knob for at least ten seconds. (In the rate screens, "RATE" appears in the upper left corner of the screen.)

• An external contact closure can be used for transmitter zeroing. (Refer to

Section 5.8

, page 46, for wiring instructions.) Close the

contact for at least ten seconds.

• Issue an auto zero command using a HART Communicator, a HART-compatible or Modbus-compatible master controller, or the ProLink software program.

• Issue a "zero trim" command with the AMS program.

During transmitter zeroing, the diagnostic LED remains on continuously.

Figure 6-1

See

. If the transmitter has a display , it reads "Sensor OK CAL IN PROGRESS". (It might be necessary to scroll through the process variable screens more than once to view this message.) The default zero time will range from 20 to 90 seconds, depending on the sensor.

Figure 6-1. Diagnostic LED and zero button

After the zeroing procedure has been completed, the LED again blinks ON once per second to indicate normal operation. If the transmitter has a display, the mass flow rate or volume flow rate screen reappears, and the blinking "Msg" (message) indicator appears in the lower right corner. To clear the message indicator, scroll to the message screen, which should read "Sensor OK *ERROR CLEARED*".

Diagnostic LED

Zero button

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Startup

continued

Diagnosing zero failure

Additional information about flowmeter zeroing

If zeroing fails, the LED blinks ON four times per second to indicate an error condition. If the transmitter has a display, the blinking "Msg" (message) indicator appears. The message screen will indicate the zero failure with a message such as "*ZERO ERROR*", "*ZERO TOO HIGH*", or "*ZERO TOO LOW*".

An error condition could indicate:

• Flow of fluid during transmitter zeroing

• Partially empty flow tubes

• An improperly mounted sensor To clear a zeroing error, cycle power to the transmitter, ensure that the

tubes are full and the flow has stopped, and rezero again.

Flowmeter zeroing can be disabled using the transmitter’s security modes. affect flowmeter zeroing. Refer to

Table 6-3

describes how RFT9739 security modes 1 through 8

Section 2.3

, page 5, for more

information about security modes. The transmitter has a programmable zeroing time (number of

measurement cycles), and enables the user to set the standard deviation limits. For more information, see any of the following instruction manuals:

Using the HART Communicator with Micro Motion Transmitters

•

Using ProLink Software with Micro Motion Transmitters

•

Using Modbus Protocol with Micro Motion Transmitters

•

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Sensor Wiring

Table 6-3. Effect of security modes on flowmeter zeroing

Per formed with

Reset knob

HART or Modbus device

Mode

Disabled Disabled Disabled Disabled Disabled Disabled Disabled

Mode

Disabled Disabled Disabled Disabled

Mode

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Startup

continued

6.5 Totalizer control

The transmitter's mass totalizer and volume totalizer can be started, stopped, and reset using any of the following:

• A HART Communicator

• ProLink software version 2.4 or higher

• A Modbus device

•AMS software In addition, the totalizer can be reset using the Scroll and Reset knobs

on the transmitter housing cover, if the RFT9739 has a display.

WARNING

When the totalizers are stopped, the frequency/pulse output is disabled.

If the frequency/pulse output is used for process control, failure to set control devices for manual operation could affect process control.

• Before stopping the totalizers, set process control devices for manual operation.

• To enable the frequency/pulse output, restart the totalizers.

Totalizer functions can be disabled, depending on the RFT9739 security mode. See

Table 6-4

Mass and volume totalizers cannot be reset independently. When one totalizer is reset, the other is also reset. To reset the transmitter's mass totalizer and volume totalizer using the Scroll and Reset knobs:

1. Use the Scroll knob to view the process variable screens until either totalizer screen appears. (In the totalizer screens, "TOT" appears in the upper left corner.)

2. Rotate and hold the Reset knob until the screen is blank, then release.

Table 6-4. Effect of security modes on totalizer control

Flow condition

No flow Scroll and

With flow Scroll and

Resetting the totalizer has no ef fect on the mass or volume inventory. For more information about security modes, refer to Section 2.3, page 5.

Performed with

Reset knobs HART or

Modbusdevice

Reset knobs HART or

Modbusdevice

Mode

Disabled Disabl ed Disabled Disabled

Disabled Disabled Disabled Disabled Disabled Disabled Disabled

Mode

Disabled Disabled Disabled

Disabled Disabled Disabled Disabled Disabled Disabled

Mode

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Startup

continued

6.6 Process measurement

WARNING

Operating the transmitter without covers in place exposes electrical hazards that can cause property damage, injury, or death.

Make sure the safety barrier partition, electronics module cover, and housing cover are securely in place before operating the transmitter.

After flowmeter zeroing has been completed as described in

Section 6.4

, page 57, the flowmeter is ready for process measurement.

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Sensor Wiring

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

7 Troubleshooting

7.1 General guidelines

Troubleshooting a Micro Motion flowmeter is performed in two parts:

1. Tests of wiring integrity

2. Observation of the transmitter's diagnostic tools, which include the diagnostic LED, diagnostic messages, and fault output levels

CAUTION

During troublesho oting, the trans mitter could pr oduce inaccurate flow signals.

Set control devices for manual operation while troubleshooting the flowmeter.

CAUTION

Rotating the transmitter housing cover or adjustable faceplate could cause the display to change, the flowmeter to be zeroed, or totalizers to be reset.

Rotating the transmitter cover actuates the Scroll and Reset knobs, whic h w i ll af fect the screen that is displ ayed, and could zero the flowmeter or reset the transmitter flow totalizers.

Adjustable faceplate

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Sensor Wiring

Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting

• Do not rotate the transmitter housing cover or adjust the faceplate while RATE, TOT, or INV screens are displayed.

• Security settings that prevent the use of scroll and reset knobs also prevent this situation from occurring. For information about security modes, see page 5.

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Transmitter housing cover

Section 2.3

Troubleshooting

continued

Follow these general guidelines when troubleshooting a Micro Motion flowmeter:

• Before beginning the diagnostic process, become familiar with this instruction manual and with the instruction manual for the sensor.

• While troubleshooting a problem, leave the sensor in place, if possible. Problems often result from the specific environment in which the sensor operates.

• Check all signals under both flow and no-flow conditions. This procedure will minimize the possibility of overlooking some causes or symptoms.

7.2 Transmitter diagnostic tools

Diagnostic LED

Table 7-1. Conditions indicated by diagnostic LED

Figure 7-1. Diagnostic LED and communicator loops

In some situations, troubleshooting requires use of the transmitter's diagnostic tools, which include the diagnostic LED, diagnostic messages, and fault output levels. The diagnostic LED and communicator hookup loops are shown in

Table 7-1

describes the transmitter operating conditions indicated by the

Figure 7-1

diagnostic LED.

Diagnostic LED does this: Condition

Blinks ON once per second (25% ON, 75% OFF)

Remains ON continuous ly Startup and i ni t ialization, zero in progress Blinks ON three times, then OFF

for 1 second Blinks OFF once per second

(75% ON, 25% OFF) Blinks ON 4 times per second Fault condition

Normal operation

Communication config urati on m ode (switch 10 in ON position)

Slug flow (density below or above userdefined limits)

Diagnostic LED

Communicator hookup loops

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Troubleshooting

continued

Before You Begin Getting Started Mounting

Fault outputs

The RFT9739 has downscale and upscale fault outputs. (See "Milliamp output scaling," page 9.) Fault output levels are listed in

Table 7-2

Table 7-2. Fault output levels

Output Operating condition Downscale Upscale

0-20 mA Alarm 0 mA 22 mA

EPROM, RAM, or RTI error; transmitter failure 0 mA 24 mA

4-20 mA Alarm 2 mA 22 mA

EPROM, RAM, or RTI error; transmitter failure 0 mA 24 mA

Frequency/pulse Alarm 0 Hz 15 kHz

EPROM, RAM, or RTI error; transmitter failure 0 Hz 19 kHz

Diagnostic messages

The transmitter provides diagnostic messages, which can be viewed on the display of a HART Communicator, or in the Status window of the ProLink software program. Messages are described in the following instruction manuals, and in AMS on-line help:

Using the HART Communicator with Micro Motion Transmitters

•

Using ProLink Software with Micro Motion Transmitters

•

Using Modbus Protocol with Micro Motion Transmitters

• Use a HART Communicator with the latest memory module, a Modbus

host controller, or ProLink software version 2.3 or higher, to view the following parameters:

•Drive gain

• Tube frequency

• Left and right pickoff voltages

•"Live zero"

Pow er-Supply and

Sensor Wiring

If the transmitter has a display:

• Many of the messages that can be read with a HART Communicator, the ProLink program, or AMS software can be read from the transmitter display. These messages are described in

Section 7.5

, page 73.

• Modbus host controllers use status bits as diagnostic messages.

• In the event of a display readback failure while using a HART Communicator, the ProLink program, a Modbus host controller, or AMS software, cycle power to the transmitter (turn power OFF, then ON).

Output Wiring Startup Troubleshooting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Troubleshooting

continued

7.3 Interrogation with a HART® device

Connect a HART Communicator to the communicator hookup loops indicated in communicate with the transmitter.

• If the HART Communicator does not offer RFT9739 "Dev v4" as a device description, the communicator memory module needs to be upgraded.

• Use ProLink software version 2.3 or higher.

• Contact the Micro Motion Customer Service Department to upgrade your HART Communicator or ProLink program:

In the U.S.A., phone 1-800-522-6277, 24 hours

Outside the U.S.A., phone 303-530-8400, 24 hours

In Europe, phone +31 (0) 318 549 443

In Asia, phone 65-770-8155

Figure 7-2

the ProLink PC Interface adaptor, or the AMS serial modem to the RFT9739. For more information, see the HART Communicator or ProLink software instruction manual, or AMS on-line help.

Fault detection indicates an interruption in the functional integrity of the sensor and the electronics, including the sensor pickoff coils, drive coil, and RTD. Faults, such as a short or an open circuit, are detected by the HART device.

The transmitter runs continuous self-diagnostics. If these diagnostics reveal a f ailure, the HART de vice displays an error message. Self-testing allows the transmitter to check its own circuitry.

Figure 7-1

(next page) explains how to connect a HART Communicator,

, or use the ProLink or AMS programs to

The transmitter works with a Micro Motion flow sensor to provide flow information. Therefore, many of the troubleshooting checks pertain only to the sensor. However, a HART Communicator, the ProLink program, and AMS software enable the user to perform other tests:

• Performing an specified current output of 0 to 22 mA.

• Performing a to produce a user-specified frequency output between 0.1 and 15,000 Hz.

• Performing an secondary mA outputs against a highly accurate external standard such as a digital multimeter (DMM) or receiving device.

Perform mA trim and/or test procedures, if necessary, as described in the HART Communicator or ProLink software instruction manuals, or in AMS on-line help.

• If the transmitter is in security mode 8, mA output test, mA output trim, and frequency/pulse output test procedures cannot be performed. For more information, see "Security mode 8," page 6.

• If the transmitter is in fault condition, an mA output test cannot be performed.

• If the transmitter is not properly connected to a sensor, or if the sensor is in fault condition, an mA output test cannot be performed.

mA output test

forces the transmitter to produce a user-

frequency/pulse output test

mA output trim

allows adjustment of the primary and

forces the transmitter

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

continued

Troubleshooting

Figure 7-2. HART® Communicator, ProLink® PC-Interface, and AMS modem connections

Field-mount

RFT9739

PV terminals

17 and 18

Before You Begin Getting Started Mounting

Communicator loops

(same circuit as PV terminals)

HART

Communicator,

ProLink PCI,

or AMS modem

PV+

Communicator loops

or PV terminals

PV–

(Note 1)

(Note 3)

DCS or PLC

with internal

resistor

(Note 2)

1. If necessary, add resistance in the lo op by installing resistor R1. SMART FAMILY devices require a m ini m u m loo p resistance of 250 ohms. Loop resistance must not exceed 1000 ohms, regardless of the communication setup.

CAUTION

Connecting a HART device to the RFT9739 primary variable milliamp output loop could cause transmitter output error.

Pow er-Supply and

Sensor Wiring

Set control devices for manual operation before connecting a HART device to the RFT9 739 primary variable milliamp output loop.

2. The DCS or PLC must be configured for an active milliamp signal.

3. Resistor R3 is required if the DCS or PLC does not have an internal resistor.

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Output Wiring Startup Troubleshooting

Troubleshooting

continued

7.4 Troubleshooting using the transmitter display

Not configured

Transmitter failure messages

If the transmitter has a display, use the message screen and refer to the following sections to troubleshoot the flowmeter:

• Overrange and sensor error messages

• Transmitter failure messages

• Slug flow and output saturated messages

• Informational messages

After the user performs a master reset, the message display reads "NOT CONFIGURED", indicating the flowmeter requires complete characterization and reconfiguration. Use a HART Communicator or the ProLink program to configure the transmitter. To perform a master reset,

Section 7.8

see

, page 76.

If a transmitter failure occurs, the display produces one of the following messages:

• "Xmtr Failed"

• "(E)eprom Error "

• "RAM Error"

•"RTI Error"

Table 7-3

describes transmitter failure messages.

CAUTION

Transmitter failures are critical, and could cause unintentional switching of process control devices.

The transmitter does not have any parts that are serviceable by the us er. If a transmitt er failure is indicated, phone the Micro Motion Customer Service Department:

• In the U.S.A., phone 1-800-522-6277, 24 hours

• Outside the U.S.A., phone 303-530-8400, 24 hours

• In Europe, phone +31 (0) 318 549 443

• In Asia, phone 65-770-8155

Table 7-3. Using transmitter failure messages

Message Condition Corrective action

Xmtr Failed Transmitter hard ware failure Phone the Micro Motion Customer Servi ce De partment: (E)EPROM error EPROM checksum failure RAM Error RAM diagnostic failure RTI Error Real-time interrupt failure

• In the U.S.A., phone 1-800-522-6277, 24 hours

• Outside the U.S.A., phone 303-530-8400, 24 hour s

• In Europe, phone +31 (0) 318 549 443

• In Asia, phone 65-770-8155

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Troubleshooting

continued

Before You Begin Getting Started Mounting

Overrange and sensor error messages

Slug flow

If a sens or f a ilure occur s, if t he sen sor c ab le is f aul ty, or if measur ed fl ow, measured temperature, or measured density go outside the sensor limits, the display produces one of the following messages:

• "Sensor Error"

• "Drive Overrng"

• "Input Overrange"

• "Temp Overrange"

• "Dens Overrng" To interpret overrange and sensor error messages, use the transmitter's

fault output levels, a digital multimeter (DMM) or other reference device, and refer to

Table 7-4

for corrective actions.

Unplug terminal blocks from the transmitter electronics module to check circuits.

Programmed slug flow limits enable transmitter outputs and the display to indicate conditions such as slug flow (gas slugs in a liquid flow stream). Such conditions adversely affect sensor performance by causing erratic vibration of the flow tubes, which in turn causes the transmitter to produce inaccurate flow signals.

If the user programs slug limits, a slug flow condition causes the following to occur:

1. The message display reads "SLUG FLOW".

2. The frequency/pulse output goes to 0 Hz.

3. mA outputs indicating flow rate go to the level that represents zero flow .

Pow er-Supply and

Sensor Wiring

Output saturated messages

The flowmeter resumes normal operation when liquid fills the flow tubes and when density stabilizes within the programmed slug flow limits.

The user can also program a slug duration, from 0 to 60 seconds, into the configuration of an RFT9739. If process density goes outside a slug flow limit, flow outputs hold their last measured value for the period of time established as the slug duration.

Table 7-5

summarizes possible slug flow errors and lists typical

corrective actions.

If an output variable exceeds its upper range limit, the display message reads "Freq Overrange", "mA 1 Saturated" or "mA 2 Saturated". The message can mean the output variable has exceeded appropriate limits for the process, or can mean the user needs to change measurement units.

Table 7-5

summarizes possible output saturated messages and lists

typical corrective actions.

Output Wiring Startup Troubleshooting

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

continued

Troubleshooting

Table 7-4. Using overrange and sensor error messages

Instructions

1. Turn off power to the transmitter.

2. Unplug termin al blocks from transm itt er ele ctr oni cs module to check circuits

Message Other symptoms Causes Corrective actions

Drive Overrng or Input Overrange

Sensor Error • Transmitter prod uces fault outputs

Drive Overrng or Dens Overrng

Temp Overrange • Tran sm it te r pr oduces fault outputs

• Transmitter produces fault outputs

• At the transmitter, DMM indicates open or short circu it f rom r ed wire to brown wire

• At the sensor, DMM indicates open or short circuit from red wire to brown wire

• Transm i t te r produces fault outputs

• At the transmitter, DMM indicates open or short circu it f rom gre en wi r e to w hi te wire

• At the sensor, DMM indicates open or short circuit from green wire to wh ite wi re

• At the transmitter, DMM indicates open or short circu it f rom blue wir e to gray wire

• At the sensor, DMM indicates open or short circuit from blue wire to gray wire

Transmitter produces fault outputs • Moisture i n sensor

Transmitter produces fault outputs • Inappropriate density

• At the transmitter, DMM indicates open or short circuit from yellow wire to orange wire

• At the sensor, DMM indicates open or short circuit from yellow wire to orange wire

• Transm i t te r produces fault outputs

• At the transmitter, DMM indicates open or short circuit from violet wire to yellow wire

• At the sensor, DMM indicates open or short circuit from violet wire to yellow wire

• Flow rate outside sensor limit

• Faulty cab l e

• Open or short drive coil in sensor

• Flow rate outside sensor limit

• Faulty cab l e

• Open or short left pickoff in sensor

• Faulty cab l e

• Open or short right pickoff in sensor

case

factors

• Process density > 5.0000 g/cc

• Severely erratic or complete cessatio n of flow tube vibration due to gas slugs or solids in process fluid

• Plugged flow tube

• Temperature outside sensor limit

• Faulty cab l e

• Open or short lead length compensator

• Faulty cab l e

• Open or short RTD in sensor

• Fill sensor with process fluid

• Bring flow rate within sensor limit

• Monitor flow rate

• If open or short at transmitter, reconnect wiring or repair cable

• If open or short at sensor, return sensor to Micro Motion

• If open or short at transmitter, reconnect wiring or repair cable

• If open or short at sensor, return sensor to Micro Motion

• Replace conduit and/or conduit seals

• Repair cable

• Return sensor to Micro Motion

• Calibrate for density

• Correct density factors

• Monitor density

• Bring density within sensor limit

• Purge flow tubes with steam, water, or purging chemical

• Bring temperature within sensor limit

• Monitor temperature

• If open or short at transmitter, reconnect wiring or repair cable

• If open or short at sensor, return sensor to Micro Motion

Table 7-5. Using slug flow and output saturated messages

Message Condition Correctiv e action(s)

Slug flow • Gas slugs causing process den si t y to go below low slug flow limit

Freq overrange Flow rate driving output from terminals 15 (FREQ+) and

mA 1 saturated Outpu t fro m terminals 17 (PV+) and 18 (PV–) = 0, 3.8, or 20.5 mA • Change value of variable at 20 mA mA 2 saturated Output from terminals 19 (SV+) and 20 (SV–) = 0, 3.8, or 20.5mA

• Solids causing process den sit y to go above high slug flow limit

16 (RETURN) to 0 or 15 kHz

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

• Monitor density

• Enter new slug flow limits

• Enter new slug duration

• Change flow measurement uni ts

• Rescale frequency/pulse output

• Reduce flow rate

• Alter fluid process

Troubleshooting

continued

Before You Begin Getting Started Mounting

Informational messages

Information messages are described below.

Table 7-6

summarizes

informational messages and lists typical corrective actions.

Power Reset

indicates a power failure, brownout, or power cycle has interrupted operation of the transmitter. The transmitter has a nonvolatile memory, which remains intact despite power interruptions.

Cal in Progress

indicates flowmeter zeroing in progress or density

calibration in progress.

Zero Too Noisy

indicates mechanical noise has prevented the transmitter from setting an accurate zero flow offset during transmitter zeroing.

Zero Too High or Zero Too Low

indicates flow was not completely shut off during sensor zeroing, so the transmitter has calculated a zero flow offset that is too great to allow accurate flow measurement. Zero Too Low indicates the zero flow offset is negative.

Burst Mode

indicates the user has configured the transmitter to send data in burst mode while operating under HART protocol. In burst mode, the transmitter sends data at regular intervals.

mA 1 Fixed or mA 2 Fixed

indicates one of several conditions:

• The mA output trim or test was not completed. The output remains

fixed at the assigned level until the user completes the output trim or test procedure.

• The user has assigned a polling address other than 0 to the transmitter

for Bell 202 communication. The output remains fixed at 4 mA until the user assigns the transmitter a polling address of 0.

Pow er-Supply and

Sensor Wiring

Event 1 On or Event 2 On

output switches the output ON.

• With mass or volume total assigned to the event, the event switches

ON and OFF according to the low or high configuration of the alarm. With a LOW alarm, the event switches ON when the user resets the totalizer. With a HIGH alarm, the event switches OFF when the user resets the totalizer.

• With flow, density, temperature, or pressure assigned to the event, the

event switches OFF or ON whenever the process variable crosses the setpoint.

Security Breach

changed from security mode 8. Clear the message by reentering security mode 8 or by performing a master reset.

Error Cleared

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

switches ON if an event tied to an RFT9739

Output Wiring Startup Troubleshooting

indicates the transmitter security mode has been

indicates a previous message has been cleared.

continued

Troubleshooting

Table 7-6. Using informational messages

Message Condition Corrective action(s)

Pow er Reset • Power failur e

Cal in Progress • Flowmeter zeroing in progress

Zero Too Noisy Mechanical noise prevented accurate zero flow

Zero Too High Zero Too Low

Burst Mode Transmitter configured to send data in burst mode

mA 1 Fixed Communi cation failure during test or trim of mA

mA 2 Fixed Communi cation failure during test or trim of

Event 1 On Event (alarm) 1 is ON • If totalizer assigned: Event 2 On Event (alarm) 2 is ON

Security Breach Security mode change d f ro m mo de 8 • Re-enter security mode 8

•Brownout

• Power cycling

• Density calibration in progress

setting during auto zero Flow not completely shut off during auto zero Completely shut off flow, then rezero Moisture in sensor junct i on box caused zero drift Ensure interior of junction box is completely dr y,

under HART protocol

output from term inal s 17 (PV+) and 18 (PV–) Polling address of 1 to 15 assigned to RFT9739

for HART in Bell 202

output from term inal s 19 (SV+) and 20 (SV–)

Check accuracy of totalizers

• If Cal in Progress disappears, no action

• If Cal in Progress reappears after zeroing is completed:

Check flowmeter cable

Eliminate noise, then rezero or recalibrate

Eliminate mechanical noise, if possible, then rezero

then rezero Switch burst mode OFF

Complete trim or test

• Change polling address to zero (0)

• Use RS-485 communicat ion st andard

Complete trim or test

Low alarm switches event ON at totalizer reset

High alarm switches event OFF at totalizer reset

• If other variable assigned, event switches ON/OFF when variable crosses setpo in t

• Perf orm master reset

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Troubleshooting

continued

Before You Begin Getting Started Mounting

7.5 Power supply

7.6 Wiring

Check for specified power at the transmitter terminals.

• If the transmitter power terminals are labeled "L" (line) and "N" (neutral), the transmitter accepts an 85-250 VAC power supply.

• If the transmitter power terminals are labeled "+" (positive) and "–" (negative), the transmitter accepts a 12-30 VDC power supply.

• Check all fuses.

For transmitter wiring instructions, refer to and Sensor Wiring," page 15; and

Chapter 5

Chapter 4

, "Power-Su ppl y

, "Output Wiring," page 25.

Wiring problems are often incorrectly diagnosed as a faulty sensor. At initial startup of the transmitter, always check the following:

1. Proper sensor cable, and use of shielded pairs

2. Proper wire termination

a. Wires on correct terminals b. Wires making good connections at transmitter terminals c. Wires making good connections at the sensor terminals d. Wires properly connected at any intermediate terminal junction,

such as the user-supplied junction box between a Model DT sensor and transmitter

If a fault condition is indicated, follow these instructions:

1. Disconnect the transmitter's power supply.

2. Unplug the terminal blocks from the transmitter electronics module.

3. Use a digital multimeter (DMM) to measure resistance between wire

pairs at the transmitter terminals:

• Drive coil, check terminals 1 and 2 (brown and red)

• Left pickoff coil, check terminals 5 and 9 (green and white)

• Right pickoff coil, check terminals 6 and 8 (blue and gray)

• RTD, check RFT9739 terminals 3 and 7 (yellow and violet)

4. If the measured resistance is outside the range listed in

Table 7-7

repeat the measurements at the sensor terminals.

5. Reinsert the terminal blocks and restore power to the transmitter.

6. Use the DMM to troubleshoot the flowmeter.

Pow er-Supply and

Sensor Wiring

Output Wiring Startup Troubleshooting

Table 7-7. Normal resistance for flowmeter circuits

Notes

• Te m perat ure sensor value increases 0.3867 5 oh ms per °C increase in temperatur e.

• Nominal resistance values will vary 40% per 100°C. However, confirming an open coil or shorted coil is more impor tant than any slight deviation from the resistance values pre sented below.

• Resistance across terminals 6 and 8 (right pickoff) should be w i th in 10% of re si st ance across terminals 5 and 9 (left pickoff).

• Resistance values depend on the sensor model and date of manufacture.

Circuit Wire colors Sensor terminals Nominal resistance range

Drive coil Brown to red 1 to 2 8 to 2650 Left pickoff Green to white 5 to 9 15.9 to 300 Right pickoff Blue to gray 6 to 8 15.9 to 300 Temperature sensor Orange to violet 3 to 7 100Ω at 0°C + 0.38675Ω per °C Lead length compensat or Yel low to vio le t 4 to 7 100Ω at 0°C + 0.38675Ω per °C

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Ω

Ω Ω

Troubleshooting

continued

7.7 Master reset

CAUTION

All configuration data will be lost by performing a master reset.

Before performing a master reset, phone the Mi cro Mot ion Customer Service Departme nt:

• In the U.S.A., phone 1-800-522-6277, 24 hours

• Outside the U.S.A., phone 303-530-8400, 24 hours

• In Europe, phone +31 (0) 318 549 443

• In Asia, phone 65-770-8155

Use the switches on the transmitter electronics module to perform a master re set. A mast er res et ca uses comm unic ation opti ons to default to the setup used by HART Communicators, causes all other configuration options to return to their default values, and

characterization and reconfiguration of the transmitter.

Table 7-8

lists master reset defaults for characterization and

configuration variables. To perform a master reset:

1. Note the position of switch 5.

2. Shut off power to the transmitter.

3. Set switches 1, 2, and 3 to the OFF position.

4. Set switches 4, 5, 6, and 10 to the ON position.

5. Restore power. Wait until the diagnostic LED blinks ON three times followed by a 1-second pause.

6. Set switches 4, 6, and 10 to the OFF position.

7. Return switch 5 to its original position.

8. Shut off power to the transmitter. Wait 30 seconds.

9. Restore power.

requires complete

If switches are left in the ON position, another master reset will occur the next time power to the transmitter is shut off and then restored.

an unintentional master reset

, set switches 4, 6, and 10 to the OFF

T o avoid

position after performing a master reset. After the user performs a master reset, the diagnostic LED on the

electronics module blinks ON four times per second until the user characterizes the transmitter to the sensor. To characterize the sensor and configure the transmitter, use a HAR T communicator, the ProLink program, or a Modbus host. For more information, see

Section 2.2

, page 4. After characterization is completed, the LED blinks ON once per second to indicate normal operation.

If the transmitter has a display, the blinking "Msg" indicator appears in the lower right corner to indicate the presence of a status message. If the user scrolls to the message screen, it reads "NOT CONFIGURED", indicating the transmitter memory contains default variables. After characterization is completed, the message screen reads "Sensor OK *ERROR CLEARED*", and the transmitter is ready for normal operation.

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

continued

Troubleshooting

Table 7-8. Default values after a master reset

Character i zation variables

Default Default

Flow calibration factor 1.00005.13 Mass flow factor 1.0 Density Volume flow factor 1.0

Density A 0.0000 g/cc Density factor 1.0 K1 density constant 5000.00 Pressure Density B 1.0000 g/cc Pressure polling No K2 density constant 50000.00 Field device tag DP CELL! Density temperature coeff i ci ent 4.44% p er 100° C Pressure input at 4 m A 0 .0 0 psi FD density constant 0.000 Pressure input at 20 mA 1000.00 psi

Temperature calibration factor 1.00000T0000.0 Pressure correction for flow 0.00% per psi

Pressure correction for density 0.00 g/cc per psi Flow calibration pressure 0.00 psi

Measurement units

Default Default

Mass flow unit g/sec Temperature unit °C Volume flow unit l/s ec Pressure un it psi Density unit g/cc

Before You Begin Getting Started Mounting

Field device variables

Default Default

Mass flow cutoff 0.00 g/sec Low slug flow limit 0.0000 g/cc Volume flow cutof f 0.0000 l/sec High slug flow limit 5.0000 g/cc Flow direction Forward only Internal da m pi ng o n density 2.00 sec Internal damp ing on flow 0.80 sec Internal da m pi ng on temperature 4.00 sec

Transmitter output variables

Default Default

Primary m A output variable M ass flow Frequency/pulse output variable Mass flow Upper range value 160.00 g/sec Frequency 10000.00 Hz Lower range value –160.00 g/sec Rate 15000.00 g/sec Added damping 0.00 sec Maximum pulse width 0.50 sec Secondary mA output variable Temperature Control output Flow direction Upper range value 450.00°C Slug duration 1.00 sec Lower range value –240.00°C Polling address 0 Added damping 0.00 sec Burst mode Off

Device information

Default Default

Transmitter tag name Description Message

Date 01/

M. RESET CONFIGURE XMTR MASTER RESET

DATA DESTROYED

JAN

/1995

ALL

Sensor model Unknown Sensor flow tube material Unknown Sensor flange type Unknown Sensor flow tube liner material None

Pow er-Supply and

Sensor Wiring

Output Wiring Startup Troubleshooting

Communication settings

Default with switch 5* set to STD COMM Default with switch 5* set to USER DEF

Stop bits and parity 1 stop bit, odd parity 1 stop bit, odd parity Protocol, physical layer, baud rate HART Bell 202 on primary mA at 1200 baud,

and Modbus RTU on RS-485 at 9600 baud

HART on RS-485 at 1200 baud

* For informat i on a bout switches and switch settings, see Section 2.3, page 5 .

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Troubleshooting

continued

7.8 Additional information about troubleshooting

7.9 Customer service

For more information about troubleshooting the RFT9739 transmitter, see any of the following instruction manuals or AMS on-line help:

Using the HART Communicator with Micro Motion Transmitters

•

Using ProLink Software with Micro Motion Transmitters

•

Using Modbus Protocol with Micro Motion Transmitters

•

For technical assistance, phone the Micro Motion Customer Service Department:

• In the U.S.A., phone 1-800-522-6277, 24 hours

• Outside the U.S.A., phone 303-530-8400, 24 hours

• In Europe, phone +31 (0) 318 549 443

• In Asia, phone 65-770-8155

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Appendix

A RFT9739 Specifications

Performance specifications

Sensor model Mass flow accuracy*

ELITE liquid ±0.10% ± [(zero stability / flow rate) x 100]% of rate

gas ±0.50% ± [(zero stability / flow rate) x 100]% of rate

F-Series liquid ±0.20% ± [(zero stability / flow rate) x 100]% of rate

gas ±0.70% ± [(zero stability / flow rate) x 100]% of rate

D (except DH38), DT and DL liquid ±0.15% ± [(zero stability / flow rate) x 100]% of rate

gas ±0.65% ± [(zero stability / flow rate) x 100]% of rate

DH38 liquid ±0.15% ± [(zero stability / flow rate) x 100]% of rate

gas ±0.50% ± [(zero stability / flow rate) x 100]% of rate

Sensor model Mass flow repeatability

ELITE liquid ±0.05% ± [½(zero stability / flow rate) x 100]% of rate

gas ±0.25% ± [(zero stability / flow rate) x 100]% of rate

F-Series liquid ±0.10% ± [½(zero stability / flow rate) x 100]% of rate

gas ±0.35% ± [(zero stability / flow rate) x 100]% of rate

D (except DH38), DT and DL liquid ±0.05% ± [½(zero stability / flow rate) x 100]% of rate

gas ±0.30% ± [(zero stability / flow rate) x 100]% of rate

DH38 liquid ±0.05% ± [½(zero stability / flow rate) x 100]% of rate

gas ±0.25% ± [(zero stability / flow rate) x 100]% of rate

Density ac cu racy Density repeatability

Sensor model

ELITE (except CMF010P) liquid only ±0.0005 ±0.5 ±0.0002 ±0.2 ELITE CMF010P liquid only ±0.002 ±2.0 ±0.001 ±1.0 F-Series liquid only ±0.002 ±2 .0 ±0.001 ±1.0 D6, D12, D25, D40, DH100, DH150 liquid only ±0.002 ±2.0 ±0.001 ±1.0 DH6, DH12, DH38 liquid only ±0.004 ±4.0 ±0.002 ±2.0 D65, DL65, DT65, D100, DT100,

D150, DT150, DH300 D300, D600, DL100, DL200 liquid only ±0.0005 ±0.5 ±0.002 ±2.0

Sensor model Temperat ure accuracy Temperature repeatability

All sensors ±1°C ± 0.5% of reading in °C ±0 .02°C

liquid only ±0.001 ±1.0 ±0.0005 ±0 .5

g/cc kg/m

* Flow accuracy includes the combined effects of repeatability, linearity, and hysteresis. All specifications for liquids are based on

reference conditions of water at 68 to 77°F (20 to 25°C) and 15 to 30 psig (1 to 2 bar), unless otherwise noted. For values of zero

stability, refer to product speci f ic at ions for each sensor.

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

continued

RFT9739 Specifications

Functional specifications

Output Signals Analog

Two independently configured analog outputs, designated as primary and secondary, can represent mass or volumetric flow rate, density, temperature, event 1 or event 2. These outputs cannot be changed from active to passive. With a pressure transmitter, outputs can also provide indication for pressure. Internally powered, can be selected as 4-20 mA or 0-20 mA current outputs. Galvanically isolated to ±50 VDC, 1000 ohm load limit. Out-of-range capability: 0-22 mA on 0-20 mA output;

3.8-20.5 mA on 4-20 mA output.

Milliamp (mA) output rangeability

Flow

Maximum span determined by sensor specifications. Range limit determined by sensor maximum rate. Minimum recommended span (% of nominal flow range):

ELITE sensors 2.5% F-Series sensors 10% D, DT, and DL sensors 10% D300 and D600 sensors 5% High-pressure (DH) sensors 20% typical

Density

Range limit 0 to 5 g/cc (0 to 5000 kg/m³) Minimum span 0.05 g/cc (50 kg/m³)

Temperature

Range limit –400 to 842°F (–240 to 450°C) Minimum span 36°F (20°C)

Frequency

One frequency/pulse output can be config ured to ind icate mass flo w rate , volumetric flow rate, mass total (inventory), or volume total (inventory), independent of analog outputs. Internally powered, 0-15 V square wave, unloaded; 2.2 k ohm impedance at 15 V, galvanically isolated to In open collector configuration: sinking capability, 0.1 amps in "on" condition (0 volt level), 30 VDC compliance in "off" condition. Signal can be scaled up to 10,000 Hz. Out-of-range capability to 15,000 Hz. Programmable pulse width for low frequencies.

Control

One control output can represent flow direction, fault alarm, zero in progress, event 1 or event 2. Internally powered, digital level, 0 or 15 V,

2.2 kohm pull-up, galvanically isolated to ±50 VDC. In open collector configuration: sinking capability, 0.1 amps in "on" condition (0 volt lev el), 30 VDC compliance in "off" condition.

±50 VDC

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

RFT9739 Specifications

Additional outputs Sensor frequency

continued

Communication

Switch allows selection of preset or user-defined settings.

• Default preset-settings: HART protocol over Bell 202, on the primary mA output, 1200 baud; Modbus protocol in RTU mode, on the RS-485 output, 9600 baud; 1 stop bit, odd parity.

• Default user-defined settings: HART protocol, on the RS-485 output, 1200 baud, 1 stop bit, odd parity.

Bell 202 signal is superimposed on primary variable mA output, and is available for host system interface. Frequency 1.2 and 2.2 kHz, amplitude 0.8 V peak-to-peak, 1200 baud. Requires 250 to 1000 ohms load resistance.

RS-485 signal is a ±5 V square wave referenced to transmitter ground. Baud rates between 1200 baud and 38.4 kilobaud can be selected.

For use with Micro Motion peripheral devices, 8 V peak-to-peak at sensor natural frequency, referenced to sensor ground, 10 kohm output impedance.

Sensor temperature

For use with Micro Motion peripheral devices, 5 mV/°C, referenced to signal ground, 10 kohm output impedance.

API gravity

API gravity references to 60°F (15°C). Uses correlation based on API equation 2540 for Generalized Petroleum Products.

Accuracy of corrected density calculation relative to API-2540 from 0 to 300°F:

Process fluid g/cc kg/m

°API

Diesel, heater, and fuel oils ±0.0005 ±0.5 ±0.2 Jet fuels, kerosenes, and solvents ±0.002 ±2.0 ±0.5 Crude oils and JP4 ±0.004 ±4.0 ±1.0 Lube oils ±0.01 ±10 ±2.0 Gasoline and naphthenes ±0.02 ±20 ±5.0

Minimum 4-20 mA span: 10°API

Standard volume

Outputs standard volume at 60°F or 15°C for Generalized Petroleum Products when °API is selected as density unit of measure. Accuracy of standard volume measurements depends on accuracies of mass flow rate, density, temperature and temperature-corrected °API calculation, and can be estimated using the root mean square method. Standard volume accuracy of ±0.5% of rate is typically attainable for Generalized Petroleum Products such as fuel oils, jet fuels, and kerosenes.

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

RFT9739 Specifications

continued

Pressure compensation

The analog input can accept a signal from a pressure transmitter for pressure compensation of flow and density. Range, 0-25 mA. Can be used to power independent pressure or differential pressure transmitter. Voltage sourcing capability, 15 V. Input impedance, 100 ohms.

Low-flow cutoff

Flow values below the low-flow cutoff cause digital and frequency outputs to default to zero flow levels. Each mA output may be configured for an additional low-flow cutoff.

Slug-flow limits

Transmitter senses density outside limits. Flow output remains at last measured value, for a programmed time of 0 to 60 seconds, before defaulting to zero flow.

Damping

Wide range of programmed filter time constants for damping on flow, density, and temperature. Additional damping may be applied to mA outputs.

Fault indication

Faults can be indicated by user-selected downscale (0-2 mA, 0 Hz) or upscale (22-24 mA, 15-19 kHz) output lev els. The control output can also be configured to indicate a fault condition at 0 V.

Output testing

Output testing can be conducted with a HART Communicator, the ProLink program, a Modbus host, or AMS software.

Current source

Transmitter can produce a user-specified current between 0 and 22 mA on a 0-20 mA output, or between 2 and 22 mA on a 4-20 mA output.

Frequency source

Transmitter can produce a user-specified frequency between 0.1 and 15,000 Hz.

Local display (optional)

Display is a 2-line, 16-character, alphanumeric liquid crystal display (LCD). Using the transmitter’s scroll function, the user can view flow rate, density, temperature, mass and volume totals and inventory levels, and status messages on the LCD . A reset button allows the user to reset the transmitter’s flow totalizers and communication parameters, and perform the flowmeter zeroing procedure.

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

RFT9739 Specifications

continued

Power supply opti o n s and fuses

85 to 250 VAC, 48 to 62 Hz, 10 watts typical, 15 watts maximum, fused with IEC 127-3 400mA/250V, time-lag, subminiature. All AC-powered RFT9739 transmitters comply with low-voltage directive 73/23/EEC per IEC 1010-1 with Amendment 2.

12 to 30 VDC, 7 watts typical, 14 watts maximum, fused with IEC 127-3

1.6A/125V, time-lag, subminiature. At startup, transmitter power source

must provide a minimum of 1.6 amperes of short-term current at a minimum of 12 volts at the transmitter's power input terminals.

Environmental limits Ambient temperature limits

Without display

Operating: –22 to 131°F (–30 to 55°C) Storage: –40 to 176°F (–40 to 80°C)

With optional display

Operating: 14 to 131°F (–10 to 55°C) Storage: –4 to 158°F (–20 to 70°C)

Humidity limits

Meets SAMA PMC 31.1-1980

Vibration limits

Meets SAMA PMC 31.1-1980, Condition 2

Environmental effects EMI effect

Field-mount RFT9739 transmitters with enhanced EMI immunity meet the requirements of the EMC directive 89/336/EEC per EN 50081-1 (January 1992) and EN 50082-2 (March 1995) when operated at nominal rated flow measurement range. Enhanced EMI immunity is required for transmitters installed in the European Community after 1 January 1996. For specific EMC effects within the EC, the Technical EMC file may be reviewed at Fisher-Rosemount Veenendaal.

All RFT9739 transmitters meet the requirements of SAMA PMC 33.1 (October 1978), Class 1, A, B, C (0.6% span) at nominal flow rate. All RFT9739 transmitters meet the recommendations of ANSI/IEEE C62.41 (1991) for surge and EFT.

To meet the above specifications, the transmitter must be installed with an approved Micro Motion sensor, and the sensor cable must be either doubly shielded with full contact glands, or installed in continuous, fully bonded metallic conduit. The transmitter and sensor must be directly connected to a low-impedance (less than 1 ohm) earth ground. Transmitter outputs must be run in standard twisted-pair, shielded instrument wire.

Ambient temperature effect on transmitter

On mA outputs: ±0.005% of span/°C On temperature output: ±0.01°C/°C On mA input: ±0.01% of span/°C

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

RFT9739 Specifications

continued

Hazardous area classifications

Without display

With optional display

When properly installed with an approved sensor, the RFT9739 fieldmount transmitter can be installed in the following areas:

UL and CSA

Transmitter: Class I, Div. 1, Groups C and D. Class II, Div . 1, Groups E, F, and G explosion proof when installed with approved conduit seals. Otherwise, Class I, Div. 2, Groups A, B, C, and D.

Outputs: Provides nonincendive sensor outputs for use in Class I, Div. 2, Groups A, B, C, and D; or intrinsically safe sensor outputs for use in Class I, Div. 1, Groups C and D, or Class II, Div. 1, Groups E, F, and G.

UL Division 2 nonincendive parameters for analog and frequency outputs for transmitters without or with a display are listed below.

CENELEC

EEx d [ib] IIC T6 flameproof when installed with approved cable glands. Connections to sensor are intrinsically safe in [EEx ib] IIC areas.

SAA

Exd [ib] IIC T4 IP66

UL and CSA

Transmitter: Class I, Div. 2, Groups A, B, C, and D.

UL Division 2 nonincendive parameters

UL Division 2 nonincendive parameters for analog and frequency outputs for transmitters without or with a display are listed below.

CENELEC

Safe area only. Connections to sensor are intrinsically safe in [EEx ib] IIC areas.

SAA

Ex [ib] IIC IP66

Parameter

Analog output

(Terminals 17- 18, 19-20)

36.5 V 16 V 22 mA 51 mA

0.135 µf1.5 100 mH 37 mH

Frequency/pulse output

(Terminals 14-16)

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

RFT9739 Specifications

continued

Physical specifications

Housing

NEMA 4X (IP65) epoxy polyester painted cast aluminum

Weight

12.5 lb (5.7 kg)

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Appendix

B Ordering Information

RFT9739 model number matrix

Code Transmitter model

RFT9739 RFT9739 transmitter

Code Housing options

E Field mount, without display, NEMA 4X, explosion-proof D

Field mount, with display, NEMA 4X

Code Power supply

4 85 to 250 VAC 5 20 to 30 VDC

Code Configuration

S Standard E Enhanced EMI immuni ty (CE compliant) — requires install atio n w ith Mic ro Motion

cable type CPLTJ or CFEPJ installed in conduit, or type CPLTS, CPLT A, CFEPS, or CFEPA installed with appr oved cable glands

Code Approval

M Micro Motion standard — no approvals U UL intrinsically safe — U.S.A. approvals agency C CSA — Canadian approvals agency B CENELEC intrinsically safe sensor outputs — Europea n standards

F C EN ELEC intrinsically safe sensor outputs /flam eproof transmitter —

S SAA — Australian approvals agency; not available with Model DL65,

organization

European standards organization; not available with housing code D

D600, or DT sensors

Code Glands

Available with approval codes M, C, B, F, and S Available with approval code U only with housing code D

A No fittings or glands

Available only with approval code U and housing code E

J 1X explosion-proof seal fit ting (any cable) K 3X explosion-proof seal fitting (any cable)

Available only with approval code B (non-EExd)

B 1X gland, nickel-plated bra ss ( 7- 12. 5 m m ) C 3X gland, nickel-plated brass (7-12.5 mm)

Available only with approval code F (flameproof EExd) and housing c ode E

D 1X gland, nickel-plated brass (8-12 mm/10.5-16 mm) E 1X gland, SS (8-12 mm/10.5-16 mm) F 3X gland, nickel-plated brass (8-12 mm/10.5-16 mm) G 3X gland, SS (8-12 mm/10.5-16 mm)

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

continued

Ordering Information

Micro Motion instruction manuals

Sensors

Transmitters

Communications

•ELITE® Sensor Instruction Manual

• R-Series Flowmeter Instruction Manual

• R-Series Flowmeter with F

OUNDATION

™

fieldbus

• T-Series Flowmeter Instruction Manual

• F-Series Sensor Instruction Manual

• Model D and DT Sensors Instruction Manual

• Model DL Sensor Instruction Manual

•ALTUS™ Installation Manual

•ALTUS

• Installing Relays for the ALTUS

™

Detailed Setup Manual

™

Density Applications Manual

™

Net Oil Computer Manual

™

Applications Platform

• RFT9739 Field-Mount Transmitter Instruction Manual

• RFT9739 Rack-Mount Transmitter Instruction Manual

• IFT9701 Transmitter Instruction Manual

• Model 5300 Transmitter with F

OUNDATION

™

fieldbus

• RFT9709 Transmitter Instruction Manual

• RFT9712 Remote Flow Transmitter Instruction Manual

• Using ProLink® Software with Micro Motion® Transmitter s

• Using the HART

• Using Modbus

Communicator with Micro Motion® Transmitters

Protocol with Micro Motion® Transmitters

• RFT9739 Transmitter-Specific Command Specification

• RFT9709 Transmitter-Specific Command Specification

• RFT9712 Transmitter-Specific Command Specification

Peripheral products

Wiring instructions

• DMS Density Monitoring System Instruction Manual

• DRT Digital Rate Totalizer LCD Instruction Manual

• DRT Digital Rate Totalizer LED Instruction Manual

• FMS-3 Flow Monitoring System LCD Instruction Manual

• FMS-3 Flow Monitoring System LED Instruction Manual

• NFC Net Flow Computer Instruction Manual

• NOC Net Oil Computer Instruction Manual

• PI 4-20 Process Indicator

• 9-Wire Flowmeter Cable Preparation and Installation

• Cable Gland Assembly Instructions

• UL-D-IS Installation Instructions

• CSA-D-IS Installation Instructions

• SAA-D-IS Installation Instructions

• Power-Supply Wiring for the D600 Sensor

• Input Signal Wiring for Peripheral Devices

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Appendix

C Theory of Operation

The flow tubes of the Coriolis mass flow sensor are driven to vibrate at their natural frequency by a magnet and drive coil attached to the apex of the bent tubes (see in the transmitter reinforces the signal from the sensor’s left velocity pickoff coil to generate the drive coil voltage. The amplitude of this drive coil voltage is continuously adjusted by the circuit to maintain a constant, low amplitude of flow tube displacement, minimizing stress to the tube assembly.

Figure C-1. Coriolis mass flow sensor

Figure C-1

). An AC drive control amplifier circuit

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Theory of Operation

continued

Mass flow measurement

Density measurement

The vibrating motion of the flow tube, combined with the momentum of the fluid flowing through the tubes, induces a Coriolis force that causes each flow tube to twist in proportion to the rate of mass flow through the tube during each vibrational cycle. Since one leg of the flow tube lags behind the other leg during this twisting motion, the signals from sensors on the two tube legs can be compared electronically to determine the amount of twist. The transmitter measures the time delay between the left and right pickoff signals using precision circuitry and a high frequency crystal controlled clock. This "delta time" value is digitally filtered to reduce noise and improve the measurement resolution.

Delta time is multiplied by the flow calibration factor to determine the mass flow rate. Since temperature affects flow tube stiffness, the amount of twist produced by the Coriolis force will be affected by the flow tube temperature. The measured flow rate is continuously adjusted by the transmitter, which monitors the output of a platinum element resistance temperature detector (RTD) attached to the outside surface of the flow tube. The transmitter measures the sensor temperature using a threewire RTD bridge amplifier circuit. The voltage out of the amplifier is converted to a frequency and is digitized by a counter read by the microprocessor.

The Coriolis mass flow sensor also functions as a vibrating tube density meter. The natural frequency of the tube assembly is a function of tube stiffness, tube geometry, and the mass of the fluid the tube contains. Therefore, fluid density can be derived from a measurement of tube frequency.

API gravity

The transmitter measures the time period of each vibrational cycle using a high-frequency clock. This measurement is digitally filtered, and density is calculated using the density calibration factors for the sensor after compensating the sensed natural frequency for known changes in the tube stiffness due to operating temperature. The transmitter calculates volumetric flow by dividing the measured mass flow by the measured density.

If °API is selected as the density unit, the transmitter calculates standard volume for Generalized P etroleum Products according to API-2540. The transmitter calculates volume flow and volume total at 60°F or 15°C, depending on the temperature unit:

• If degrees Fahrenheit or degrees Rankine is selected as the temperature unit, the transmitter calculates volume at 60°F.

• If degrees Celsius or Kelvin is selected as the temperature unit, the transmitter calculates volume at 15°C.

From the operating density (fluid density at line conditions) and operating temperature of a given petroleum fluid, the standard density (density at 60°F or 15°C) can be determined directly from API thermal expansion tables, or by using API equation API-2540:

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Theory of Operation

continued

exp[–α∆T

(1 + 0.8

α∆

)]

where:

= operating density

= standard density

∆T= α =

temperature difference from base (standard) temperature

/(ρs)2 +

1/ρs

, where

and

are constants

The equation is iterative, and requires significant calculation time to generate one reading. The transmitter software contains a simplification of this correlation to maximize sampling frequency of the measurement. Accuracy of the Micro Motion correlation is ±0.0005 g/cc (±0.5 kg/m

) relative to the API-2540 equation. After temperature correction to 60°F (15°C), the density is converted to °API by the following expression:

Degrees API = (141.5/standard specific gravity) – 131.5

The

and

terms in the API-2540 equation are constants

characteristic of different types of Generalized Petroleum Products. Separate API tables exist for crude oils, distillates, gasolines, lube oils, and other products. The correlation in the RFT9739 is based on the API constants for Generalized Petroleum Products from 2 to 95°API over an operating temperature range of 0 to 300°F. As fluid density or operating temperature extends beyond these values, the RFT9739 correlation error will increase. Density calibration must be performed in units of g/cc for the API correlation to be correct.

API standard volume

If °API is selected as the density unit, the RFT9739 automatically calculates standard volume at 60°F or at 15°C based on the following expression:

Standard volume = mass flow/standard density

Accuracy of standard volume measurement is based on the accuracies of the following factors:

• Mass rate measurement

• Operating density measurement

• Temperature measurement

• RFT9739 correlation to API tables The accuracy of each factor varies based on the process operating

conditions and fluid that is being measured. For Generalized Petroleum Products, standard volume will be accurate within ±0.5% of the flow rate. Because the temperature correction correlations for density are based on API equations, the RFT9739 standard volume output can be used only for Generalized Petroleum Products or materials that exhibit the same thermal expansion characteristics as Generalized Petroleum Products.

RFT9739 Field-Mount Tra nsm it te r Instruction Manual

Theory of Operation

continued

Pressure compensation

Output variables

A pressure transmitter can be connected to the RFT9739 for pressure compensation. The RFT9739 or an external source can supply power to the pressure transmitter.

If the input is configured to indicate gauge pressure, the transmitter uses the pressure input to account for effects of pressure on the flow tubes of certain sensors. Not all sensors are affected by pressure. In this mode, the pressure effect is calculated as the percent change in the flow rate per psi change in pressure and/or the amount of change in density, in g/cc, per psi change in pressure.

Measured variables can be output in a variety of ways from the RFT9739. Mass or volume flow rate can be output as an isolated 4-20 or 0-20 mA signal over either of two sets of output terminals. Alternatively, either mA output can be configured to indicate temperature, density, pressure, event 1 or event 2.

Mass or volume flow pulses from the isolated frequency output terminals can be scaled to 10,000 Hz for compatibility with PLCs, batch controllers, and totalizers.

All measured variables, including totalizers for batch and inventory, can be accessed digitally . The transmitter can use the Bell 202 physical layer at 1200 baud superimposed on the primary mA signal and/or the RS-485 physical layer at 1200 baud to 38.4 kilobaud. The transmitter can use HART protocol over the Bell 202 or RS-485 physical layer, Modbus protocol over the RS-485 physical layer, or HART over the Bell 202 layer and Modbus over the RS-485 layer.

A logic output can be programmed to indicate the flow direction, a fault alarm, or a zero in progress condition. The transmitter operational status is also indicated on the transmitter display.

RFT9739 Field-Mou nt Tra nsm i t t er Instr uc t io n M anual

Micro Motion Field-Mount Transmitter - Model RFT9739 Manuals & Guides

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

1 Before You Begin

1.1 About this manual

1.2 About the transmitter

2 Getting Started

2.1 Hazardous area installations

Installations in Europe

2.2 Configuration, calibration, and characterization

2.3 Switch settings

Security modes

Security mode 8

Communication settings

Milliamp output scaling

3 Transmitter Mounting

3.1 General guidelines

3.2 Mounting to a wall

3.3 Mounting to an instrument pole

4.1 General guidelines

Installations in Europe

4.2 Power supply and grounding

Power-supply options

Wiring

Grounding

4.3 Sensor wiring

5 Output Wiring

5.1 General guidelines

5.2 Maximum wire length

5.4 Frequency/pulse output

Default configuration

Configuration for increased current

Configuration for constant current

Configuration for open collector mode

5.5 Control output

Control output in open collector mode

5.6 Peripheral device wiring

5.7 Pressure transmitter wiring

5.8 Remote-zero switch

5.9 RS-485 multidrop network

6 Startup

6.1 Initialization

Initialization with display

6.2 Using the optional display

Adjusting the sight window

Process variables mode

6.3 Custody transfer event registers

6.4 Flowmeter zeroing

Zeroing procedure

Diagnosing zero failure

6.5 Totalizer control

6.6 Process measurement

7 Troubleshooting

7.1 General guidelines

7.2 Transmitter diagnostic tools

Diagnostic LED

Fault outputs

Diagnostic messages

Not configured

Transmitter failure messages

Slug flow

Output saturated messages

Informational messages

7.5 Power supply

7.6 Wiring

7.7 Master reset

7.8 Additional information about troubleshooting

7.9 Customer service

B Ordering Information

C Theory of Operation