Configuration Manual: Low Flow Transmitter with Foundation Fieldbus | Micro Motion
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Loading...Micro Motion Configuration Manual: Low Flow Transmitter with Foundation Fieldbus | Micro Motion Manuals & Guides
Instruction Manual
P/N 20002377, Rev. A
December 2004
Micro Motion® LF-Series
Transmitters with
FOUNDATION™ Fieldbus
Configuration and Use Manual
Micro Motion
TM
©2004, Micro Motion, Inc. All rights reserved. Micro Motion is a registered trademark of Micro Motion, Inc. The Micro Motion and
Emerson logos are trademarks of Emerson Electric Co. All other trademarks are property of their respective owners.
Contents
Chapter 1 Starting the Flowmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Applying power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Assigning function block channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4 Assigning the integrator function block mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4.1 Assigning the integrator function block type. . . . . . . . . . . . . . . . . . . . . . . . 4
1.5 Zeroing the flowmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5.1 Preparing for the zeroing procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5.2 Zeroing with device description methods. . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5.3 Zeroing with a fieldbus host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5.4 Zeroing with ProLink II software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5.5 Zeroing with the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Chapter 2 Calibrating the Flowmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 When to calibrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Density calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3.1 Preparing for density calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3.2 Density calibration with device description methods . . . . . . . . . . . . . . . . 10
2.3.3 Density calibration with a fieldbus host . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.4 Density calibration with ProLink II software . . . . . . . . . . . . . . . . . . . . . . . 12
2.4 How to calibrate for temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.4.1 Temperature calibration with device description methods . . . . . . . . . . . . 13
2.4.2 Temperature calibration with fieldbus parameters . . . . . . . . . . . . . . . . . . 13
2.4.3 Temperature calibration with ProLink II software . . . . . . . . . . . . . . . . . . . 14
Chapter 3 Configuring the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Configuration map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3 Changing the measurement units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4 Creating special measurement units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.1 Using special measurement units with AI function blocks . . . . . . . . . . . . 18
3.4.2 Special mass flow units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.4.3 Special volume flow units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.5 Changing the output scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.6 Changing the linearization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.7 Changing process alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.7.1 Alarm values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.8 Alarm priorities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.8.1 Alarm hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.9 Changing the damping values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.9.1 Flow damping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.9.2 Density damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.9.3 Temperature damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
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3.10 Adjusting meter factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.10.1 Calculating meter factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.10.2 Adjusting meter factors with a fieldbus host . . . . . . . . . . . . . . . . . . . . . . 27
3.11 Changing slug flow limits and duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.11.1 Slug flow limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.11.2 Slug flow duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.12 Configuring cutoffs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.12.1 Configuring cutoffs with a fieldbus host . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.12.2 Configuring cutoffs with ProLink II software . . . . . . . . . . . . . . . . . . . . . . 30
3.13 Changing the flow direction parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.14 Changing the software tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.15 Changing the display functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.15.1 Enabling and disabling display functions . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.15.2 Changing the scroll rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.15.3 Changing the off-line password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.15.4 Using the backlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.15.5 Changing the display variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Chapter 4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.2 Viewing process variables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.3 Enabling simulation mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.4 Responding to alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.4.1 Viewing alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.4.2 Acknowledging alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.5 Using the totalizers and inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.5.1 Viewing the totalizers and inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.5.2 Controlling the totalizers and inventories. . . . . . . . . . . . . . . . . . . . . . . . . 44
Chapter 5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.2 Micro Motion customer service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.3 Guide to troubleshooting topics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.4 Transmitter does not operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.5 Transmitter does not communicate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.5.1 National Instruments basic information . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.6 Zero or calibration failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.7 Output problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.7.1 Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.7.2 Flow cutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.7.3 Output scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.7.4 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.7.5 Fieldbus network power conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.7.6 Linearization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.8 Lost static data alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.9 Status alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.10 Diagnosing wiring problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.10.1 Checking the power supply wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.10.2 Checking the sensor-to-transmitter wiring . . . . . . . . . . . . . . . . . . . . . . . . 55
5.10.3 Checking the grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.10.4 Checking the communication wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.11 Checking slug flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
ii LF-Series Transmitters with FOUNDATION Fieldbus: Configuration and Use
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5.12 Checking the test points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5.12.1 Obtaining the test points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5.12.2 Evaluating the test points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5.12.3 Excessive drive gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
5.12.4 Erratic drive gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
5.12.5 Bad pickoff voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
5.13 Checking the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
5.13.1 Checking the sensor LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
5.13.2 Sensor resistance test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Appendix A Using ProLink II Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
A.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
A.2 Connecting to a transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Appendix B Using the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
B.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
B.2 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
B.3 Display password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
B.4 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Appendix C FOUNDATION Fieldbus Function Block Reference. . . . . . . . . . . . . . . . 65
C.1 FOUNDATION fieldbus technology and fieldbus function blocks . . . . . . . . . . . . . . . . . 65
C.1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
C.1.2 Block operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
C.2 Analog input function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
C.2.1 Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
C.2.2 Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
C.2.3 Signal conversion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
C.2.4 Block errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
C.2.5 Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
C.2.6 Alarm detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
C.2.7 Status handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
C.2.8 Advanced features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
C.2.9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
C.3 Analog output function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
C.3.1 Setting the output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
C.3.2 Setpoint selection and limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
C.3.3 Conversion and status calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
C.3.4 Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
C.3.5 Action on fault detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
C.3.6 Block errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
C.3.7 Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
C.3.8 Status handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
C.4 Integrator function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
C.4.1 Block execution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
C.4.2 Specifying rate tIme base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
C.4.3 Setting reverse flow at the inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
C.4.4 Calculating net flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
C.4.5 Integration types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
C.4.6 Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
C.4.7 Status handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
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C.5 Proportional/integral/derivative function block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
C.5.1 Setpoint selection and limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
C.5.2 Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
C.5.3 Feedforward calculation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
C.5.4 Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
C.5.5 Output selection and limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
C.5.6 Bumpless transfer and setpoint tracking . . . . . . . . . . . . . . . . . . . . . . . . . 89
C.5.7 PID equation structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
C.5.8 Reverse and direct action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
C.5.9 Reset limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
C.5.10 Block errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
C.5.11 Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
C.5.12 Alarm detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
C.5.13 Status handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
C.5.14 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Appendix D LF-Series Transducer Blocks Reference. . . . . . . . . . . . . . . . . . . . . 95
D.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
D.2 Transducer block names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
iv LF-Series Transmitters with FOUNDATION Fieldbus: Configuration and Use
Chapter 1
Starting the Flowmeter
1.1 Overview
This chapter describes the procedures you should perform the first time you start up the flowmeter.
You do not need to use these procedures every time you cycle power to the flowmeter.
The procedures in this section will enable you to:
• Apply power to the flowmeter
• Assign analog input (
• Assign the integrator (
• Zero the flowmeter
Figure 1-1 summarizes the startup procedure.
Figure 1-1 Overview of the startup procedure
AI) function blocks to transducer block channels
INT) function block mode (optional)
Calibration OperationConfigurationStartup
Start
Apply power.
Optional configuration
Set up the
AI blocks.
Zero the
transmitter.
Finish
Set up INT
block mode.
Configure pressure
compensation.
Note: All ProLink II procedures provided in this section assume that your computer is already
connected to the transmitter and you have established communication. See Appendix A.
LF-Series Transmitters with FOUNDATION Fieldbus: Configuration and Use 1
Starting the Flowmeter
Using the service port to communicate with the transmitter in a hazardous
area can cause an explosion.
Before using ProLink II software via the service port to communicate with the
transmitter in a hazardous area, make sure the atmosphere is free of explosive
gases.
1.2 Applying power
Before you apply power to the flowmeter, close and tighten all housing covers.
Operating the flowmeter without covers in place creates electrical hazards
that can cause death, injury, or property damage.
Make sure safety barrier partition and covers for the field-wiring, circuit board
compartments, electronics module, and housing are in place before applying power
to the transmitter.
WARNING
WARNING
Turn on the electrical power at the power supply. The flowmeter will automatically perform
diagnostic routines. If the transmitter has a display, the status LED will turn green and begin to flash
when the transmitter has finished its startup diagnostics.
1.3 Assigning function block channels
The four
AI function blocks and the AO function block may be assigned to one transducer block
channel each. The available transducer block channels are shown in Table 1-1.
Table 1-1 Available transducer block channels
Channel Number Process Variable Function Block
1 Mass Flow Analog Input
2 Temperature Analog Input
3 Density Analog Input
4 Volume Flow Analog Input
5 Drive Gain Analog Input
6 Pressure Analog Output
(1)
19
(1) Channel 19 is selectable only if the GSV_GAS_DENS parameter in the MEASUREMENT transducer block is nonzero.
Gas Standard Volume Analog Input
2 LF-Series Transmitters with FOUNDATION Fieldbus: Configuration and Use
Starting the Flowmeter
To assign an AI or AO function block to a transducer block channel:
1. Select an
2. Set the
AI or AO function block.
TARG ET value of the MODE_BLK parameter to out-of-service (O/S).
3. Write to the transmitter, and wait until the
ACTUAL value of the MODE_BLK parameter
is O/S.
4. Set the
5. Set the
6. Set the
CHANNEL parameter to the transducer block channel you want to set up.
UNITS value of the XD_SCALE parameter.
UNITS value of the OUT_SCALE to match the UNITS value of the XD_SCALE
parameter.
7. Set the
8. Set the
L_TYPE parameter to Direct.
TARG ET value of the MODE_BLK parameter to Auto and write to the transmitter.
1.4 Assigning the integrator function block mode
INT function block can be set up to measure the totalizer in fifteen different ways. Except for
The
standard mode, each mode causes the
INT function block to report the value of a specific transducer
block parameter.
Table 1-2 lists the available modes for the
INT block.
Table 1-2 INT function block modes
Reports the value of this parameter:
Mode
Standard None None — standard FOUNDATION fieldbus
Internal mass total MEASUREMENT MASS_TOTAL
Internal volume total MEASUREMENT VOLUME_TOTAL
Internal mass inventory MEASUREMENT MASS_INVENTORY
Internal volume inventory MEASUREMENT VOLUME_INVENTORY
Internal gas volume total MEASUREMENT GSV_VOL_TOTAL
Internal gas volume inventory MEASUREMENT GSV_VOL_INV
Internal API volume total API API_CORR_VOL_TOTAL
Internal API volume inventory API API_CORR_VOL_INV
Internal ED standard volume total ENHANCED DENSITY ED_STD_VOL_TOTAL
Internal ED standard volume inventory ENHANCED DENSITY ED_STD_VOL_INV
Internal ED net mass total ENHANCED DENSITY ED_NET_MASS_TOTAL
Internal ED net mass inventory ENHANCED DENSITY ED_NET_MASS_INV
Internal ED net volume total ENHANCED DENSITY ED_NET_VOL_TOTAL
Internal ED net volume inventory ENHANCED DENSITY ED_NET_VOL_INV
Transducer block Parameter
INT block behavior
Calibration OperationConfigurationStartup
LF-Series Transmitters with FOUNDATION Fieldbus: Configuration and Use 3
Starting the Flowmeter
The INTEGRATOR_FB_CONFIG parameter of the MEASUREMENT transducer block controls the
INT function block mode of operation.
To assign the
1. Select the
2. Set the
INT function block mode:
MEASUREMENT transducer block.
TARG ET value of the MODE_BLK parameter to O/S.
3. Write to the transmitter and wait until the
is O/S.
4. Set the
5. Set the
INTEGRATOR_FB_CONFIG parameter to the desired INT function block mode.
TARG ET value of the MODE_BLK parameter to Auto.
1.4.1 Assigning the integrator function block type
INT function block can be set up for manual resetting of the total or automatic resetting of the
The
total when a set point is reached. To assign the integrator function block type:
1. Select the
2. Set the
INT function block.
TARG ET value of the MODE_BLK to O/S.
3. Write to the transmitter and wait until the actual value of the
4. Set the
5. Set the
INTEG_TYPE parameter to the type of reset you want.
TARG ET value of the MODE_BLK to Auto.
1.5 Zeroing the flowmeter
ACTUAL value of the MODE_BLK parameter
MODE_BLK parameter is O/S.
Zeroing the flowmeter establishes the flowmeter’s point of reference when there is no flow.
When you zero the flowmeter, you may need to adjust the zero time parameter. Zero time is the length
of time the transmitter takes to determine its zero-flow reference point. The default zero time is
20 seconds.
•A long zero time may produce a more accurate zero reference but is more likely to result in
zero failure. This is due to the increased possibility of noisy flow, which causes incorrect
calibration.
•A short zero time is less likely to result in a zero failure but may produce a less accurate zero
reference.
For most applications, the default zero time is appropriate.
Note: Do not zero the flowmeter if a high severity alarm is active. Correct the problem first, then zero
the flowmeter. You may zero the flowmeter if a low severity alarm is active. See Section 4.4 for
information about responding to alarms.
You can zero the flowmeter with device description methods, a fieldbus host, ProLink II software, or
the display. If the zero procedure fails, see Section 5.6 for troubleshooting information.
4 LF-Series Transmitters with FOUNDATION Fieldbus: Configuration and Use
Starting the Flowmeter
1.5.1 Preparing for the zeroing procedure
To prepare for the zeroing procedure:
1. Apply power to the flowmeter. Allow the flowmeter to warm up for approximately 20 minutes.
2. Run the process fluid through the sensor until the sensor temperature reaches the normal
process operating temperature.
3. Close the shutoff valve downstream from the sensor.
4. Ensure that the sensor is completely filled with fluid and the flow through the sensor has
completely stopped.
If fluid is flowing through the sensor, the sensor zero calibration may be
inaccurate, resulting in inaccurate process measurement.
CAUTION
To improve the sensor zero calibration and measurement accuracy, ensure that
process flow through the sensor has completely stopped.
1.5.2 Zeroing with device description methods
To zero the flowmeter with a fieldbus host that supports device description (DD) methods:
1. Run the
2. Click
Start Sensor Zero method.
OK (twice).
3. Type a new zero time in the text box provided or accept the default value.
4. Click
OK. A Calibration in Progress dialog box appears.
5. If a failure dialog box appears, click OK and see Section 5.6.
6. If a dialog box appears containing the
ZERO_OFFSET and ZERO_STD_DEV parameter
values, the zero procedure succeeded.
7. Click
OK.
1.5.3 Zeroing with a fieldbus host
To zero the flowmeter using a fieldbus host:
1. Select the
2. Set the
CALIBRATION transducer block.
TARG ET value of the MODE_BLK parameter to O/S.
Calibration OperationConfigurationStartup
3. Write to the transmitter and wait until the
ACTUAL value of the MODE_BLK parameter
is O/S.
4. Inspect the
5. Type a new zero time in the
6. Set the
7. Inspect the
ZERO_TIME parameter.
ZERO_TIME parameter or accept the default value.
ZERO_CAL method parameter to Zero Cal.
XD_ERROR parameter. During the zeroing procedure, this parameter will indicate
an alarm. When the alarm clears, the zero procedure is complete.
8. If the
XD_ERROR parameter does not clear, the zeroing procedure failed. For more
information about the cause of failure, select the
the bits of the
ALARM4_STATUS parameter. Refer to Section 5.6 for the probable causes of
DIAGNOSTICS transducer block and inspect
zero failure.
LF-Series Transmitters with FOUNDATION Fieldbus: Configuration and Use 5
Starting the Flowmeter
9. If you want to know the results of the zero procedure, view the ZERO_OFFSET and
ZERO_STD parameters.
10. Set the
TARG ET value of the MODE_BLK parameter to Auto.
1.5.4 Zeroing with ProLink II software
To zero the flowmeter with ProLink II software:
1. Choose
2. If you want to change the zero time, type a new zero time in the
Apply. The default zero time of 20 seconds is appropriate for most applications.
3. Click
4. The
5. If the
Calibration Failure light remains red, the zero procedure has failed. See Section 5.6 for
ProLink > Calibration > Zero Calibration.
Zero Time box and click
Zero. The flowmeter will begin zeroing.
Calibration in Progress light will turn red while the zeroing procedure is in progress.
Calibration in Progress light returns to green, the zero procedure succeeded. If the
possible causes of zero failure.
6. Click
Close.
1.5.5 Zeroing with the display
See Figure 1-2 for the zeroing procedure.
Note the following:
• If the off-line menu has been disabled, you will not be able to zero the transmitter with the
display. For information about enabling or disabling the off-line menu, see Section 3.15.
• You cannot change the zero time with the display. If you need to change the zero time, you
must use a fieldbus host or ProLink II software.
6 LF-Series Transmitters with FOUNDATION Fieldbus: Configuration and Use
Starting the Flowmeter
Figure 1-2 Display menu — zeroing the flowmeter
Scroll and Select
simultaneously for 4 seconds
Scroll
OFF-LINE MAINT
Select
Scroll
OFF-LINE ZERO
Select
YES?
Select
Dots traverse the display
TEST FAIL TEST OK
Select
Troubleshooting
Exit
Calibration OperationConfigurationStartup
LF-Series Transmitters with FOUNDATION Fieldbus: Configuration and Use 7
8 LF-Series Transmitters with FOUNDATION Fieldbus: Configuration and Use
Chapter 2
Calibrating the Flowmeter
2.1 Overview
The flowmeter measures process variables based on fixed points of reference. Calibration adjusts
those points of reference. This chapter provides instructions for performing density calibration and
temperature calibration.
Note: All ProLink II procedures provided in this section assume that your computer is already
connected to the transmitter and you have established communication. See Appendix A.
WARNING
Using the service port to communicate with the transmitter in a hazardous
area can cause an explosion.
Before using ProLink II software via the service port to communicate with the
transmitter in a hazardous area, make sure the atmosphere is free of explosive
gases.
Calibration OperationConfigurationStartup
2.2 When to calibrate
The transmitter is factory calibrated and does not normally need to be calibrated in the field. Calibrate
the transmitter only if you must do so to meet regulatory requirements.
Note: Micro Motion recommends using meter factors, rather than calibration, to prove the meter
against a regulatory standard or to correct measurement error. Contact Micro Motion before
calibrating your flowmeter. For information on meter factors, see Section 3.10.
2.3 Density calibration
Density calibration includes the following calibration points:
• Point one (low density calibration)
• Point two (high density calibration)
The calibrations that you choose must be performed without interruption, in the order listed here.
Note: Before performing the calibration, record your current calibration parameters. If you are using
ProLink II, you can do this by saving the current configuration to a file on the PC. If the calibration
fails, restore the known values.
You can calibrate for density with device description methods, a fieldbus host, or ProLink II software.
Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus 9
Calibrating the Flowmeter
2.3.1 Preparing for density calibration
Before beginning density calibration, review the requirements in this section.
Sensor requirements
During density calibration, the sensor must be completely filled with the calibration fluid, and flow
through the sensor must be at the lowest rate allowed by your application. This is usually
accomplished by closing the shutoff valve downstream from the sensor, then filling the sensor with
the appropriate fluid.
Density calibration fluids
D1 and D2 density calibration require a D1 (low density) fluid and a D2 (high density) fluid. You may
use air and water.
2.3.2 Density calibration with device description methods
Perform the following steps to calibrate the flowmeter for density with a fieldbus host that supports
DD methods.
Step 1: Point one (low density calibration)
To perform the low density calibration:
1. Run the
2. Click
Start Low Density Calibration method.
OK.
3. Close the shutoff valve downstream from the sensor.
4. Click
OK.
5. Fill the sensor completely with a low density fluid (e.g., air).
6. Click
OK.
7. Type the density of the calibration fluid in the text box provided.
8. Click
OK. A Calibration in Progress dialog box appears.
• If a dialog box appears when the calibration is complete, the calibration failed. Click
and refer to Section 5.6.
• If a
Low Density Calibration Successful dialog box appears when the calibration is
complete, click
OK and proceed to the high density calibration procedure.
Step 2: Point two (high density calibration)
To perform the high density calibration:
1. Run the
2. Click
Start High Density Calibration method.
OK.
3. Close the shutoff valve downstream from the sensor.
4. Click
OK.
OK
5. Fill the sensor completely with a high density fluid (e.g., water).
6. Click
OK.
7. Type the density of the calibration fluid in the text box provided.
10 Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus
Calibrating the Flowmeter
8. Click OK. A Calibration in Progress dialog box appears.
• If a dialog box appears when the calibration is complete, the calibration failed. Click
and refer to Section 5.6.
• If a
complete, click
2.3.3 Density calibration with a fieldbus host
Perform the following steps to calibrate the flowmeter for density with a fieldbus host.
Step 1: Point one (low density calibration)
To perform the low density calibration:
1. Select the
2. Set the
3. Write to the transmitter, and wait until the
is O/S.
4. Close the shutoff valve downstream from the sensor.
5. Fill the sensor completely with a low density fluid (e.g., air).
6. Verify that the sensor is experiencing zero flow (e.g., by looking at the display or inspecting
the
MFLOW parameter of the MEASUREMENT transducer block).
7. Set the
High Density Calibration Successful dialog box appears when the calibration is
OK.
CALIBRATION transducer block.
TARG ET value of the MODE_BLK parameter to O/S.
ACTUAL value of the MODE_BLK parameter
D1 parameter to the density of the calibration fluid.
OK
Calibration OperationConfigurationStartup
8. Set the
LOW_DENSITY_CAL method parameter to Low Density Cal.
9. Write to the transmitter.
10. Inspect the
XD_ERROR parameter. During the calibration procedure, this parameter will
indicate an alarm.
• When the alarm clears, the calibration procedure is complete.
• If the
XD_ERROR parameter does not clear, the calibration procedure failed. For more
information about the cause of failure, select the
inspect the bits of the
ALARM4_STATUS parameter. Refer to Section 5.6 for the probable
causes of calibration failure.
11. Inspect the
K1 parameter for the results of the calibration, and proceed to the high density
calibration procedure.
Step 1 Step 2: Point two (high density calibration)
To perform the high density calibration:
1. Select the
2. Set the
3. Write to the transmitter, and wait until the
CALIBRATION transducer block.
TARG ET value of the MODE_BLK parameter to O/S.
ACTUAL value of the MODE_BLK parameter
is O/S.
4. Close the shutoff valve downstream from the sensor.
DIAGNOSTICS transducer block and
5. Fill the sensor completely with a high density fluid (e.g., water).
6. Verify that the sensor is experiencing zero flow (e.g., by looking at the display or inspecting
the
MFLOW parameter of the MEASUREMENT transducer block).
7. Set the
Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus 11
D2 parameter to the density of the calibration fluid.
Calibrating the Flowmeter
8. Set the HIGH_DENSITY_CAL method parameter to High Density Cal.
9. Write to the transmitter.
10. Inspect the
indicate an alarm.
• When the alarm clears, the calibration procedure is complete.
XD_ERROR parameter. During the calibration procedure, this parameter will
• If the
XD_ERROR parameter does not clear, the calibration procedure failed. For more
information about the cause of failure, select the
inspect the bits of the
ALARM4_STATUS parameter. Refer to Section 5.6 for the probable
DIAGNOSTICS transducer block and
causes of calibration failure.
11. Inspect the
12. Set the
K2 parameter for the results of the calibration.
TARG ET value of the MODE_BLK parameter to Auto and write to the transmitter.
2.3.4 Density calibration with ProLink II software
Perform the following procedures to calibrate the transmitter for density with ProLink II software.
Step 1: Point one (low density calibration)
To perform the low density calibration:
1. Choose
ProLink > Calibration > Density Cal - Point 1.
2. Close the shutoff valve downstream from the sensor.
3. Fill the sensor completely with a low density fluid (e.g., air).
4. Type the density of the low density fluid in the
5. Click
6. The
Do Cal.
Calibration in Progress light turns red while the calibration is in proress.
• If the
Calibration in Progress light returns to green, the calibration procedure succeeded.
Read the results of the calibration in the
Enter Actual Density box.
K1 box and click Done.
• If the
Calibration in Progress light remains red, the calibration procedure failed. See
Section 5.6.
Step 2: Point two (high density calibration)
To perform the high density calibration:
1. Choose
ProLink > Calibration > Density Cal - Point 2.
2. Close the shutoff valve downstream from the sensor.
3. Fill the sensor completely with a high density fluid (e.g., water).
4. Type the density of the high density fluid in the
5. Click
6. The
Do Cal.
Calibration in Progress light turns red while the calibration is in proress.
• If the
Calibration in Progress light returns to green, the calibration procedure succeeded.
Read the results of the calibration in the
• If the
Calibration in Progress light remains red, the calibration procedure failed. See
Enter box.
K2 box and click Done.
Section 5.6.
12 Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus
Calibrating the Flowmeter
2.4 How to calibrate for temperature
Temperature calibration is a two-point procedure. The entire procedure must be completed without
interruption.
You can calibrate for temperature with device description methods, a fieldbus host or ProLink II
software.
2.4.1 Temperature calibration with device description methods
To perform a temperature calibration with a fieldbus host that supports DD methods:
1. Run the
Start Temperature Calibration DD method.
2. Click
OK.
3. Fill the sensor with a low-temperature fluid, and allow the sensor to achieve thermal
equilibrium.
4. Click
OK.
5. Type the temperature of the low-temperature fluid in the text box provided.
6. Click
OK.
• If a dialog box containing a reason for failure appears, click
• If a
Low Temperature Calibration Successful dialog box appears, click OK.
OK and refer to Section 5.6.
7. Fill the sensor with a high-temperature fluid, and allow the sensor to achieve thermal
equilibrium.
8. Click
OK.
9. Type the temperature of the high-temperature fluid in the text box provided.
10. Click
OK.
• If a dialog box containing a reason for failure appears, click
• If a
High Temperature Calibration Successful dialog box appears, click OK. A dialog
OK and refer to Section 5.6.
box containing the results of the temperature calibration appears.
11. Click
OK.
Calibration OperationConfigurationStartup
2.4.2 Temperature calibration with fieldbus parameters
To perform a temperature calibration with a fieldbus host:
1. Select the
2. Set the
3. Write to the transmitter, and wait until the
CALIBRATION transducer block.
TARG ET value of the MODE_BLK parameter to O/S.
ACTUAL value of the MODE_BLK parameter
is O/S.
4. Fill the sensor with a low-temperature fluid and allow the sensor to achieve thermal
equilibrium.
5. Set the
6. Set the
TEMP_VALUE parameter to the temperature of the calibration fluid.
TEMP_LOW_CAL method parameter to Temp Low Calibration.
7. Write to the transmitter.
Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus 13
Calibrating the Flowmeter
8. Inspect the XD_ERROR parameter. During the calibration procedure, this parameter will
indicate an alarm.
• When the alarm clears, the calibration procedure is complete.
• If the
information about the cause of failure, select the
inspect the bits of the
causes of calibration failure.
9. Fill the sensor with a high-temperature fluid, and allow the sensor to achieve thermal
equilibrium.
XD_ERROR parameter does not clear, the calibration procedure failed. For more
DIAGNOSTICS transducer block and
ALARM4_STATUS parameter. Refer to Section 5.6 for the probable
10. Set the
11. Set the
TEMP_VALUE parameter to the temperature of the calibration fluid.
TEMP_HIGH_CAL method parameter to Temp High Calibration.
12. Write to the transmitter.
13. Inspect the
XD_ERROR parameter. During the calibration procedure, this parameter will
indicate an alarm.
• When the alarm clears, the calibration procedure is complete.
• If the
XD_ERROR parameter does not clear, the calibration procedure failed. For more
information about the cause of failure, select the
inspect the bits of the
ALARM4_STATUS parameter. Refer to Section 5.6 for the probable
DIAGNOSTICS transducer block and
causes of calibration failure.
14. Set the
TARG ET value of the MODE_BLK parameter to Auto and write to the transmitter.
2.4.3 Temperature calibration with ProLink II software
To perform a temperature calibration with ProLink II software:
1. Choose
ProLink > Calibration > Temp Offset Cal.
2. Fill the sensor with a low-temperature fluid and allow the sensor to achieve
thermal equilibrium.
3. Type the temperature of the low-temperature fluid in the
4. Click
Do Cal.
Enter Actual Temp box.
5. If a dialog box appears containing a reason for failure, the calibration procedure failed. See
Section 5.6.
6. Click
7. Choose
Done.
ProLink > Calibration > Temp Slope Cal.
8. Fill the sensor with a high-temperature fluid and allow the sensor to achieve
thermal equilibrium.
9. Type the temperature of the high-temperature fluid in the
10. Click
Do Cal.
Enter Actual Temp box.
11. If a dialog box appears containing a reason for failure, the calibration procedure failed. See
Section 5.6.
12. Click
14 Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus
Done.
Chapter 3
Configuring the Transmitter
3.1 Overview
This chapter describes how to change the operating settings of the transmitter. The transmitter was
configured at the factory, so changing these settings is not normally necessary.
The procedures in this chapter will enable you to:
• Change the measurement units
• Create special measurement units
• Change the output scale
• Change the linearization
• Change process alarm settings
• Change the damping
• Adjust meter factors
Calibration OperationConfigurationStartup
• Change slug-flow parameters
• Change the low-flow cutoff
• Change the flow direction parameter
• Change the software tag
• Change the display functionality
Note: All ProLink II procedures provided in this section assume that your computer is already
connected to the transmitter and you have established communication. See Appendix A.
WARNING
Using the service port to communicate with the transmitter in a hazardous
area can cause an explosion.
Before using ProLink II software via the service port to communicate with the
transmitter in a hazardous area, make sure the atmosphere is free of explosive
gases.
Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus 15
Configuring the Transmitter
3.2 Configuration map
Use the map in Table 3-1 to guide you through a complete or partial configuration of the transmitter.
Table 3-1 Configuration map
Topic Subtopics Page
Measurement units Page 16
Special measurement units Mass-flow units, volume-flow units Page 17
Output scale Page 20
Linearization Page 21
Process alarms Alarm values, alarm priorities, alarm hysteresis Page 21
Damping Flow damping, density damping, temperature damping Page 24
Meter factors Page 26
Slug flow Slug flow limits, slug flow duration Page 27
Cutoffs Mass flow cutoff, volume flow cutoff, density cutoff Page 29
Flow direction Page 30
Software tag Page 31
Display functionality Display functions, scroll rate, display password, display variables Page 32
3.3 Changing the measurement units
You can change the measurement units for each process variable with a fieldbus host or
ProLink II software.
With a fieldbus host
The
AI function blocks control the measurement units for the process variables they measure. To
change the measurement units of an
1. Select the
2. Set the
AI function block whose measurement units you want to change.
TARG ET value of the MODE_BLK parameter to O/S.
3. Write to the transmitter, and wait until the
is O/S.
4. Set the
5. Set the
UNITS value of the XD_SCALE parameter to a new measurement unit.
TARG ET value of the MODE_BLK parameter to Auto and write to the transmitter.
With ProLink II software
If you change the measurement units for a process variable with ProLink II
software, you must also change the units used by the appropriate AI function
block with a fieldbus host. If you do not change the units in the AI function
block, the AI block will get a configuration error.
AI function block:
ACTUAL value of the MODE_BLK parameter
CAUTION
To change the density measurement unit with ProLink II software:
1. Choose
2. Click the
16 Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus
ProLink > Configuration.
Density tab.
Configuring the Transmitter
3. Select a measurement unit from the Dens Units drop-down list.
4. Click
Apply.
To change the volume-flow measurement unit with ProLink II software:
1. Choose
2. Click the
ProLink > Configuration.
Flow tab.
3. Select a measurement unit from the
4. Click
Apply.
To change the mass-flow measurement unit with ProLink II software:
1. Choose
2. Click the
ProLink > Configuration.
Flow tab.
3. Select a measurement unit from the
4. Click
Apply.
To change the temperature measurement unit with ProLink II software:
1. Choose
2. Click the
ProLink > Configuration.
Temperatu re tab.
3. Select a measurement unit from the
4. Click
Apply.
3.4 Creating special measurement units
If you need to use a non-standard unit of measure, you can create one special measurement unit for
mass flow and one special measurement unit for volume flow. Special measurement units consist of:
• Base unit — A combination of:
Vol Flow Units drop-down list.
Mass Flow Units drop-down list.
Calibration OperationConfigurationStartup
Temp Units drop-down list.
- Base mass or base volume unit — A standard measurement unit that the transmitter
already recognizes (e.g., kg, m
3
)
- Base time unit — A unit of time that the transmitter already recognizes
(e.g., seconds, days)
• Conversion factor — The number by which the base unit will be divided to convert to the
special unit
• Special unit — A non-standard volume-flow or mass-flow unit of measure that you want to be
reported by the transmitter.
The terms above are related by the following formulae:
x Base units[]y Special units[]=
x Base units[]
Conversion factor
------------------------------------------=
y Special units[]
To create a special unit, you must:
1. Identify the simplest base volume or mass and base time units for your special unit. For
example, to create the special volume flow unit pints per minute, the simplest base units are
gallons per minute:
a. Base volume unit: gallon
b. Base time unit: minute
Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus 17
Configuring the Transmitter
2. Calculate the conversion factor:
3. Name the new special mass-flow or volume-flow measurement unit and its corresponding
totalizer measurement unit:
a. Special volume-flow measurement unit name: pint/min
b. Volume totalizer measurement unit name: pints
Note: Special measurement unit names can be up to 8 characters long, but only the first 5 characters
appear on the display.
3.4.1 Using special measurement units with AI function blocks
If you want an
AI function block. See Section 3.6 for more information about linearization.
of the
AI function block to use special measurement units, you must change the linearization
3.4.2 Special mass flow units
You can create a special mass-flow measurement unit with a fieldbus host or ProLink II software.
1 gallon per minute
--------------------------------------------------- 0.125=
8 pints per minute
With a fieldbus host
The parameters in the
MEASUREMENT transducer block which hold the special mass flow
measurement unit values are:
• MFLOW_SPECIAL_UNIT_BASE
• MFLOW_SPECIAL_UNIT_TIME
• MFLOW_SPECIAL_UNIT_CONV
• MFLOW_SPECIAL_UNIT_STR
• MASS_TOT_INV_SPECIAL_STR
Whenever the
units. If the
MFLOW_SPECIAL_UNIT_CONV value equals 1, the transmitter will use normal mass
MFLOW_SPECIAL_UNIT_CONV value does not equal 1, the transmitter will use the
special mass flow units.
To create a special mass-flow measurement unit with a fieldbus host:
1. Select the
2. Set the
3. Write to the transmitter, and wait until the
MEASUREMENT transducer block.
TARG ET value of the MODE_BLK parameter to O/S.
ACTUAL value of the MODE_BLK parameter
is O/S.
4. Set the
5. Set the
6. Type the conversion factor into the
7. Type the name of the special unit in the
MFLOW_SPECIAL_UNIT_BASE parameter to a base mass unit.
MFLOW_SPECIAL_UNIT_TIME parameter to a base time unit.
MFLOW_SPECIAL_UNIT_CONV parameter.
MFLOW_SPECIAL_UNIT_STR parameter. The name
can be up to 8 characters in length, though only the first 5 are displayed.
8. Type the name of the totalizer for the special unit in the
MASS_TOT_INV_SPECIAL_STR
parameter. The name can be up to 8 characters in length, though only the first 5 are displayed.
9. Set the
TARG ET value of the MODE_BLK parameter to Auto.
18 Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus
Configuring the Transmitter
With ProLink II software
To create a special mass-flow measurement unit with ProLink II software:
1. Choose
ProLink > Configuration.
2. Click the
3. Select a base mass unit from the
4. Select a base time unit from the
5. Type the conversion factor in the
6. Type the name of the special unit in the
Special Units tab.
Base Mass Unit drop-down list.
Base Mass Time drop-down list.
Mass Flow Conv Fact box.
Mass Flow Text box. The name can be up to
8 characters in length, though only 5 are displayed.
7. Type the name of the totalizer for the special unit in the
8. Click
Apply.
Mass Total Text box.
3.4.3 Special volume flow units
You can create a special volume-flow measurement unit with a fieldbus host or ProLink II software.
With a fieldbus host
The parameters in the
MEASUREMENT transducer block which hold the special volume flow
measurement unit values are:
• VOL_SPECIAL_UNIT_BASE
• VOL_SPECIAL_UNIT_TIME
• VOL_SPECIAL_UNIT_CONV
• VOL_SPECIAL_UNIT_STR
Calibration OperationConfigurationStartup
• VOLUME_TOT_INV_SPECIAL_STR
Whenever the
units. If the
VOL_SPECIAL_UNIT_CONV value equals 1, the transmitter will use normal volume
VOL_SPECIAL_UNIT_CONV value does not equal 1, the transmitter will use the special
volume flow units.
To create a special volume-flow measurement unit with a fieldbus host:
1. Select the
2. Set the
3. Write to the transmitter, and wait until the
MEASUREMENT transducer block.
TARG ET value of the MODE_BLK parameter to O/S.
ACTUAL value of the MODE_BLK parameter is
O/S.
4. Set the
5. Set the
6. Type the conversion factor into the
7. Type the name of the special unit in the
VOL_SPECIAL_UNIT_BASE parameter to a base volume unit.
VOL_SPECIAL_UNIT_TIME parameter to a base time unit.
VOL_SPECIAL_UNIT_CONV parameter.
VOL_SPECIAL_UNIT_STR parameter. The name can
be up to 8 characters in length, though only 5 are displayed.
8. Type the name of the totalizer for the special unit in the
VOLUME_TOT_INV_SPECIAL_STR
parameter. The name can be up to 8 characters in length, though only the first 5 are displayed.
9. Set the
TARG ET value of the MODE_BLK parameter to Auto.
Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus 19
Configuring the Transmitter
With ProLink II software
To create a special volume-flow measurement unit with ProLink II software:
1. Choose
ProLink > Configuration.
2. Click the
Special Units tab.
3. Select a volume unit from the
4. Select a time unit from the
5. Type the conversion factor in the
6. Type the name of the special unit in the
in length, though only 5 are displayed.
7. Type the name of the totalizer for the special unit in the
8. Click
Apply.
3.5 Changing the output scale
The output scale is the scope of output values between specified high and low limits. The output scale
is established by indicating a value at 0% of output and a value at 100% of output. Process values are
converted to a number along this scale.
The
OUT_SCALE parameter in each AI function block holds the output scale values. Note the
following about changing the
• The value of the
variable in the
MEASUREMENT transducer block.
• If your transmitter has a display, the value of the
from the same process variable as shown on the display.
Base Vol Units drop-down list.
Base Vol Time drop-down list.
Vol F l ow Co nv F a ct box.
Vol F l ow Te x t box. The name can be up to 8 characters
Vol Total Text box.
OUT_SCALE parameter:
OUT parameter of the AI block may differ from the value of the same process
OUT parameter of the AI block may differ
Example
If you need the output of the
of output scaling. A special unit can be scaled to meet your needs and will be used identically in the
AI block and on the display. See Section 3.4 for more information about special units.
You can change the output scale only with a fieldbus host. To change the output scale of an
function block:
1. Select the
2. Set the
TARG ET value of the MODE_BLK parameter to O/S.
The AI block set to channel 3 (density) is scaled so that 0% = 0.5 g/cm3 and
100% = 1.5 g/cm
When the actual density is 0.5 g/cm
parameter of the MEASUREMENT transducer block, and the display would be
like those below.
• AI block: 0.0 g/cm
• DENSITY parameter: 0.5 g/cm
• Display: 0.5 g/cm
AI block and the display to agree, use special measurement units instead
AI function block.
3
.
3
3
3. Write to the transmitter, and wait until the
is O/S.
4. Set the
EU_0 value of the OUT_SCALE parameter to the output value at 0% of scale.
3
, the outputs of the AI block, the DENSITY
3
AI
ACTUAL value of the MODE_BLK parameter
20 Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus
Configuring the Transmitter
5. Set the EU_100 value of the OUT_SCALE parameter to the output value at 100% of scale.
6. Set the
TARG ET value of the MODE_BLK parameter to Auto.
3.6 Changing the linearization
Linearization translates a process variable into different measurement units and onto a new scale. The
measurement units and the output scale are not directly affected by a change in the linearization
parameter. See Section 3.3 and Section 3.5, above, for information about changing the measurement
units and output scale directly.
The
L_TYPE parameter of each AI function block holds the linearization information. The transmitter
supports the following values for the
L_TYPE parameter:
• Direct—Use direct linearization whenever you are using standard units of measure (e.g., kg/hr,
3
g/cm
).
• Indirect—Use indirect linearization whenever you are using a special unit of measure (see
Section 3.4).
• Indirect square root—Do not use indirect square root linearization.
You can change the linearization setting only with a fieldbus host.
To change the linearization:
1. Select the
2. Set the
AI block for which you want to change the linearization value.
TARG ET value of the MODE_BLK parameter to O/S.
3. Write to the transmitter, and wait until the
is O/S.
4. Set the
5. Set the
L_TYPE parameter to a new linearization value.
TARG ET value of the MODE_BLK parameter to Auto.
3.7 Changing process alarms
The transmitter sends process alarms to indicate that a process value has exceeded its user-defined
limits. The transmitter maintains four alarm values for each process variable. Each alarm value has a
priority associated with it. In addition, the transmitter has an alarm hysteresis function to prevent
erratic alarm reports.
Calibration OperationConfigurationStartup
ACTUAL value of the MODE_BLK parameter
Note: Process alarms are only posted through the AI function block and are NOT shown on
the display.
3.7.1 Alarm values
The process alarm values are the limits for process variables. Whenever a process variable exceeds a
process alarm value, the transmitter broadcasts an alarm to the fieldbus network.
Each
AI function block has four process alarm values: high alarm, high-high alarm, low alarm, and
low-low alarm. See Figure 3-1. The high and low process alarm values represent normal process
limits. The high-high and low-low process alarm values are used for more complex alarm signals
(e.g., to indicate a more severe problem than a regular process alarm indicates).
Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus 21
Configuring the Transmitter
Figure 3-1 Alarm values
High-high alarm
High alarm
Normal process range
Process variable
The
HI_LIM, HI_HI_LIM, LO_LIM, and LO_LO_LIM parameters in each AI function block hold the
Low alarm
Low-low alarm
alarm values. You can change the alarm values only with a fieldbus host.
To change the alarm values for an
1. Select the
2. Set the
AI function block.
TARG ET value of the MODE_BLK parameter to O/S.
3. Write to the transmitter, and wait until the
AI function block:
ACTUAL value of the MODE_BLK parameter
is O/S.
4. Set the
5. Set the
6. Set the
7. Set the
8. Set the
HI_HI_LIM parameter to a new value.
HI_LIM parameter to a new value.
LO_LIM parameter to a new value.
LO_LO_LIM parameter to a new value.
TARG ET value of the MODE_BLK parameter to Auto.
3.8 Alarm priorities
Each process alarm is assigned an alarm priority. A process alarm priority is a number from 0 to 15.
Higher numbers indicate higher alarm priorities. The
parameters of each
process alarm priority values only with a fieldbus host.
To change the process alarm priority value for a specific
1. Select the
2. Set the
3. Write to the transmitter, and wait until the
is O/S.
4. Set the
5. Set the
6. Set the
7. Set the
8. Set the
HI_PRI, HI_HI_PRI, LO_PRI, and LO_LO_PRI
AI function block hold the process alarm priority values. You can change the
AI function block:
AI function block.
TARG ET value of the MODE_BLK parameter to O/S.
ACTUAL value of the MODE_BLK parameter
HI_HI_PRI parameter to a new value.
HI_PRI parameter to a new value.
LO_PRI parameter to a new value.
LO_LO_PRI parameter to a new value.
TARG ET value of the MODE_BLK parameter to Auto.
22 Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus
Configuring the Transmitter
3.8.1 Alarm hysteresis
The alarm hysteresis value is a percentage of the output scale. After a process alarm is created, the
transmitter will not create new alarms unless the process first returns to a value within the range of the
alarm hysteresis percentage. Figure 3-2 shows the transmitter’s alarm behavior with an alarm
hysteresis value of 50%.
• A low hysteresis value allows the transmitter to broadcast a new alarm every time or nearly
every time the process variable crosses over the alarm limit.
• A high hysteresis value prevents the transmitter from broadcasting new alarms unless the
process variable first returns to a value sufficiently below the high alarm limit or above the low
alarm limit.
Figure 3-2 High versus low alarm hysteresis values
New alarms
not created
Alarm created
Process variable
Hysteresis value
New alarm
created here
HIGH ALARM
LOW ALARM
You can change the alarm hysteresis value only with a fieldbus host. The
each
AI function block holds the alarm hysteresis value.
To change the alarm hysteresis value for an
1. Select the
2. Set the
AI function block containing the alarm hysteresis value you want to change.
TARG ET value of the MODE_BLK parameter to O/S.
3. Write to the transmitter, and wait until the
AI function block:
ACTUAL value of the MODE_BLK parameter
is O/S.
4. Set the
5. Set the
ALARM_HYS parameter to a percentage of the output scale.
TARG ET value of the MODE_BLK parameter to Auto.
Calibration OperationConfigurationStartup
ALARM_HYS parameter in
Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus 23
Configuring the Transmitter
3.9 Changing the damping values
A damping value is a period of time, in seconds, over which the process variable value will change to
reflect 63% of the change in the actual process. Damping helps the transmitter smooth out small,
rapid measurement fluctuations.
•A high damping value makes the output appear to be smoother because the output must
change slowly.
•A low damping value makes the output appear to be more erratic because the output can
change more quickly.
You can change the damping values for flow, density, and temperature.
Note: Damping values will be automatically rounded down to the nearest valid damping value.
3.9.1 Flow damping
Flow damping affects mass flow and volume flow. You can change the flow damping value with a
fieldbus host or ProLink II software.
With a fieldbus host
The
FLOW_DAMPING parameter in the transducer block holds the mass flow and volume flow
damping value. There is an additional damping parameter called
to avoid applying two damping values, Micro Motion recommendeds setting the
parameter to zero. This is described in the procedure below.
To change the flow damping value with a fieldbus host:
PV_FTIME in each AI block. In order
PV_FTIME
1. Select the
2. Set the
3. Write to the transmitter, and wait until the
MEASUREMENT transducer block.
TARG ET value of the MODE_BLK parameter to O/S.
ACTUAL value of the MODE_BLK parameter
is O/S.
4. Set the
5. Set the
6. Select the
7. Set the
8. Write to the transmitter and wait until the
FLOW_DAMPING parameter to a new damping value.
TARG ET value of the MODE_BLK parameter to Auto and write to the transmitter.
AI function block that measures transducer block channel 1 (mass flow).
TARG ET value of the MODE_BLK parameter to O/S.
ACTUAL value of the MODE_BLK parameter
is O/S.
9. Set the
10. Set the
PV_FTIME parameter to 0.
TARG ET value of the MODE_BLK parameter to Auto.
11. Write to the transmitter.
12. Repeat Steps 6 through 11 for the
AI block that measures transducer block channel 4
(volume flow).
With ProLink II software
To change the flow damping value with ProLink II software:
1. Choose
ProLink > Configuration.
2. Click the
3. Type a new damping value in the
4. Click
24 Transmitter Configuration and Use: LF-Series Transmitters with FOUNDATION Fieldbus
Flow tab.
Flow Damp box.
Apply.
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