Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters Manuals & Guides

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00809-0200-4840, Rev BA

Rosemount™ 3107 Level and 3108 Flow Transmitters

Ultrasonic

Reference Manual

December 2014

Reference Manual

00809-0200-4840, Rev BA

Rosemount Ultrasonic 3107 and 3108 Transmitters

Title Page

December 2014

Read this manual before working with the product. For personal and system safety, and for optimum product performance, make sure you thoroughly understand the contents before installing, using, or maintaining this product.

Within the United States, Rosemount Inc. has two toll-free assistance numbers. Customer Central: 1-800-999-9307 (7:00 a.m. to 7:00 p.m. CST)

Technical support, quoting, and order-related questions.

North American Response Center:

Equipment service needs. 1-800-654-7768 (24 hours a day – Includes Canada) For equipment service or support needs outside the United States, contact your local

Rosemount representative.

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

Using non-nuclear qualified products in applications that require nuclear-qualified hardware or products may cause inaccurate readings.

For information on Rosemount nuclear-qualified products, contact your local Rosemount Sales Representative.

This device complies with par t 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

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December 2014

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Reference Manual

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1Section 1: Introduction

1.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.2 Manual overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.3 Service support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.4 Product recycling/disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2Section 2: Transmitter Overview

2.1 Introduction to the transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2.2 Theory of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2.3 Components of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2.4 System architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

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3Section 3: Installation

3.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

3.2 Considerations before installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.2.1 Safety considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2.2 Environmental considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.3 Mechanical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.3.1 Consider liquid surface conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

3.3.2 Consider in-tank effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

3.3.3 Mounting the transmitter above the liquid surface. . . . . . . . . . . . . . . . . .11

3.3.4 Open channel flow installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

3.4 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.4.1 Connecting the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

3.4.2 Remote temperature sensor (on 3108 only) . . . . . . . . . . . . . . . . . . . . . . .17

3.4.3 Wiring to allow HART communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

3.4.4 Lightning / surge protection and other loop devices . . . . . . . . . . . . . . . .18

4Section 4: Configuration

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4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.2 Command parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.2.1 Base units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4.2.2 Set as empty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

4.2.3 Present depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

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4.2.4 Learn false echo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

4.2.5 Auto tank map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

4.2.6 Simulation of PV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

4.2.7 Restart device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

4.2.8 Load defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

4.2.9 Simulate current output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

4.2.10 Trim 4mA / Trim 20mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

4.3 Configuration parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.3.1 Message (P000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

4.3.2 Tag (P001). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

4.3.3 Descriptor (P002). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

4.3.4 Final assembly number (P004) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

4.3.5 Serial number (P005) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

4.3.6 Bottom reference (P010) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

4.3.7 Upper blanking (P023) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

4.3.8 Lower blanking (P063) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

4.3.9 Distance offset (P060). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

4.3.10 Level offset (P069). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

4.3.11 Tank shape / non-linear profile (P011). . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

4.3.12 Contents (volume) measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.3.13 Flow measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

4.3.14 Primary variable units (P012). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

4.3.15 Scale factor / K-factor (P013). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

4.3.16 Profile height / Power factor (P014) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

4.3.17 Profile points 1 to 10 (P030 to P039) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

4.3.18 Upper range value (P015). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

4.3.19 Lower Range Value (P016) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

4.3.20 Damping (P020). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

4.3.21 Lost echo delay (P021) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

4.3.22 Lost echo action (P022) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

4.3.23 Speed of sound (P024) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

4.3.24 Temperature (P025) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

4.3.25 Set threshold (P026) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

4.3.26 Transmit power control (P040) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

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4.3.27 Pulse repeat (P041) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

4.3.28 Echoes needed (P042) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

4.3.29 Threshold 1 time (P043). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

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5Section 5: Service and Troubleshooting

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4.3.30 Threshold 1 size (P048). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

4.3.31 Target pulses (P044) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

4.3.32 Target frequency (P045). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

4.3.33 Spike rejection (P049). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

4.3.34 False echo data (P081 to P088). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

4.3.35 Clear false echoes (P089) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

4.3.36 Transducer material (P970) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

4.3.37 Poll address (D951) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

4.3.38 Maximum temperature (P046) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

4.3.39 Minimum temperature (P047) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

4.3.40 Date (P003). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

5.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

5.2 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

5.3 Power failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

5.4 False echoes under certain ambient operating conditions. . . . . . . . . . . . . . . . . . 82

5.5 Monitoring and diagnostic parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

5.5.1 Process Value / Primary Variable (PV) (D900). . . . . . . . . . . . . . . . . . . . . . .84

5.5.2 Level / Secondary Variable (SV) (D901) . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

5.5.3 Distance / Tertiary Variable (TV) (D902) . . . . . . . . . . . . . . . . . . . . . . . . . . .86

5.5.4 Temperature / Fourth Variable (FV) (D903) . . . . . . . . . . . . . . . . . . . . . . . .87

5.5.5 % of current output (D905) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

5.5.6 Current output (D906) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

5.5.7 Distance (D910) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

5.5.8 Echo size (D911). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

5.5.9 Echo success (D912) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

5.5.10 Target echoes (D913) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

5.5.11 Speed of sound (D914) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

5.5.12 Temperature for SoS calculation (D915). . . . . . . . . . . . . . . . . . . . . . . . . . .94

5.5.13 Frequency (D916) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

5.5.14 Threshold in use (D917) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

5.5.15 Pulses in use (D918) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

5.5.16 Transmit power (D919) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

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5.5.17 Model code (D949) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

5.5.18 Hardware rev. (D952) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

5.5.19 Software revision (D953) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

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5.5.20 Manufacturer (D960) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

5.5.21 Unique Device ID (D961) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

5.5.22 HART revision (D962) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

5.5.23 Transmitter specific command rev. (D963) . . . . . . . . . . . . . . . . . . . . . . 106

5.5.24 Preambles (D964) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

5.5.25 Transmitter flags (D965) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

5.5.26 Primary variable trend. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

5.5.27 Temperature trend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

5.5.28 Distance and echo size trend . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . 109

AAppendix A: Reference Data

A.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

A.1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

A.1.2 Measuring performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

A.1.3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

A.1.4 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

A.1.5 Materials of construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

A.1.6 Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

A.1.7 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

A.1.8 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

A.1.9 Temperature and pressure ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

A.1.10 Load limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

A.2 Dimensional drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

A.3 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

A.3.1 Spare parts and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

BAppendix B: Product Certifications

B.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

B.2 Approved manufacturing locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

B.3 European Union directive information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

B.4 MCERTS certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

B.5 Hazardous locations certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

B.5.1 American and canadian approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

B.5.2 European certifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

B.5.3 Rest of the world certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

B.6 Approval drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

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CAppendix C: Rosemount 3490 Series Universal Control Unit

DAppendix D: Field Communicator

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C.1 Menus and parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

D.1 Menus and parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

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Section 1 Introduction

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1

Manual overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2

Service support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2

Product recycling/disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2

1.1 Safety messages

Procedures and instructions in this manual may require special precautions to ensure the safety of the personnel performing the operations. Information that raises potential safety issues is

indicated by a caution symbol ( ). The external hot surface symbol ( ) is used when a surface is hot and care must be taken to avoid possible burns. If there is a risk of an electrical shock the

( ) symbol is used. Refer to the safety messages listed at the beginning of each section before performing an operation preceded by this symbol.

Section 1: Introduction

December 2014

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

 Make sure only qualified personnel perform the installation.  Use the equipment only as specified in this manual. Failure to do so may impair the

protection provided by the equipment.

Explosions could result in death or serious injury.

 Verify that the operating environment of the transmitter is consistent with the

appropriate hazardous locations certifications.

 Before connecting a HART

-based communicator in an explosive atmosphere, make sure the instruments in the loop are installed in accordance with intrinsically safe or non-incendive field wiring practices.

Electrical shock could cause death or serious injury.

 Use extreme caution when making contact with the leads and terminals.

Any substitution of non-recognized parts may jeopardize safety. Repair, e.g. substitution of components etc., may also jeopardize safety and is under no circumstances allowed.

Section 1: Introduction

December 2014

1.2 Manual overview

This manual provides installation, configuration, and maintenance information for the Rosemount 3107 Level and 3108 Flow Transmitter.

 Section 2: Transmitter Overview

 Section 3: Installation

 Section 4: Configuration

 Section 5: Service and Troubleshooting

 Section A: Reference Data

 Section B: Product Certifications

 Section C: Rosemount 3490 Series Universal Control Unit

 Section D: Field Communicator

1.3 Service support

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00809-0200-4840, Rev BA

To expedite the return process outside of the United States, contact the nearest Emerson representative.

Within the United States, call the Emerson Instrument and Valves Response Center using the 1 800 654 7768 toll-free number. This center, available 24 hours a day, will assist you with any needed information or materials.

The center will ask for product model and serial numbers, and will provide a Return Material Authorization (RMA) number. The center will also ask for the process material to which the product was last exposed.

Individuals who handle products exposed to a hazardous substance can avoid injury if they are informed of, and understand, the hazard. If the product being returned was exposed to a hazardous substance as defined by OSHA, a copy of the required Material Safety Data Sheet (MSDS) for each hazardous substance identified must be included with the returned goods.

1.4 Product recycling/disposal

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

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4mA

00809-0200-4840, Rev BA

Section 2: Transmitter Overview

Section 2 Transmitter Overview

Introduction to the transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3

Theory of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4

Components of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4

System architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5

2.1 Introduction to the transmitters

The Rosemount 3107 and Rosemount 3108 are sealed 4–20 mA loop-powered liquid level transmitters, and are designed for use in waste water and effluent treatment plant applications. The 3108 is MCERTS certified for open flow channel applications.

These rugged UPVC transmitters are certified Intrinsically Safe for use in Zone 0 areas, and factory fitted with up to 164 ft. (50 m) of two-core cable for simple low cost installation in sumps, wet-wells and over open channel flow structures.

December 2014

The transmitters can be connected directly to a plant control system, or used with a Rosemount 3490 Series Control Unit for programmable control functionality.

Note

 The Rosemount 3490 Series Control Unit software must be version 3.40 or later.

Figure 2-1. Typical application using a Rosemount 3108 flow transmitter

A. Rosemount 3108 Flow Transmitter E. Pump B. Rosemount 3490 Series Control Unit F. Transmitter Bottom Reference C. 4–20 mA signal output G. 4–20 mA and HART signal input D. Relay

Section 2: Transmitter Overview

December 2014

2.2 Theory of operation

The level transmitter is designed to be mounted above a liquid (Figure 2-1 on page 3), and uses ultrasonic pulses to continuously measure the distance to the liquid surface. The electronics calculate distance to the liquid level using the time delay between transmitting and receiving signals.

When programmed with the bottom reference of the application – usually the bottom of a tank – the transmitter calculates the liquid depth (level), and outputs the result as a 4–20 mA and HART signal.

The 3108 and the 3107 can calculate contents (volume) or open channel flow when programmed with further application information, and outputs the result as a 4–20 mA and HART signal.

2.3 Components of the transmitter

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The transmitter has a housing containing advanced electronics to generate ultrasonic pulses,

process the resultant signals, and provide a 4–20mA and HART

output.

There is a factory-fitted cable for the signal output and connecting an external power supply. The 3108 has a factory-fitted Remote Temperature Sensor.

Figure 2-2. Transmitter components

A. Mounting bracket D. UPVC wetted parts B. Two-core cable E. Remote temperature sensor (3108 only) C. 1-in. mounting thread

Reference Manual

751 Display

Rosemount 3490 Series Controller

Field Communicator

HART Modem

AMS

™

Suite:

Intelligent Device Manager

Control System

Remote Temperature Sensor

(Rosemount 3108 only)

Rosemount

3107/3108

Tra ns mit te r

4–20 mA / HART

00809-0200-4840, Rev BA

2.4 System architecture

The Rosemount 3107 and 3108 are loop-powered which means they use the same two wires for both power supply and output signal.

The transmitter can be connected to any suitable direct current (dc) power source using the factory-fitted two-core, shielded cable.

The output is a 4–20mA analog signal and a digital HART signal.

Note

 It is possible to use the multidrop function with the HART protocol (see Figure 2-3). In

this case, communication is restricted to digital since the current is fixed to 4 mA.

The transmitters can easily be configured by using a Rosemount 3490 Series Control Unit. Alternatively, a Field Communicator, or a PC with AMS

software, can be used to configure the transmitter.

Note

 The Rosemount 3490 Control Unit software must be version 3.40 or later.

Section 2: Transmitter Overview

December 2014

™

Suite: Intelligence Device Manager

A comprehensive specification for the Rosemount 3107 and 3108 is in the section

“Specifications” on page 111.

Figure 2-3. System architecture

3490

Model type:

3491

Section 2: Transmitter Overview

December 2014

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Section 3 Installation

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7

Considerations before installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8

Mechanical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9

Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 16

3.1 Safety messages

Procedures and instructions in this manual may require special precautions to ensure the safety of the personnel performing the operations. Information that raises potential safety issues is

indicated by a caution symbol ( ). The external hot surface symbol ( ) is used when a surface is hot and care must be taken to avoid possible burns. If there is a risk of an electrical shock the

( ) symbol is used. Refer to the safety messages listed at the beginning of each section before performing an operation preceded by this symbol.

Section 3: Installation

December 2014

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

 Make sure only qualified personnel perform the installation.  Use the equipment only as specified in this manual. Failure to do so may impair the

protection provided by the equipment.

Explosions could result in death or serious injury

 Verify that the operating environment of the transmitter is consistent with the

appropriate hazardous locations certifications.

 Before connecting a HART

-based communicator in an explosive atmosphere, make sure the instruments in the loop are installed in accordance with intrinsically safe or non-incendive field wiring practices.

Electrical shock could cause death or serious injury

 Use extreme caution when making contact with the leads and terminals.

Any substitution of non-recognized parts may jeopardize safety. Repair, e.g. substitution of components etc., may also jeopardize safety and is under no circumstances allowed.

Section 3: Installation

December 2014

3.2 Considerations before installation

The Rosemount 3107 and 3108 may be used for level and volume measurement in open or closed tanks, or open channel flow measurement.

The transmitter must be installed in a location where it is protected from ultraviolet radiation to prevent long term degradation of the plastics used in its construction e.g. shrouded from direct sunlight.

It is important to correctly position the transmitter for reliable ultrasonic level measurement. For maximum accuracy and stability of the level measurement reading, the transmitter should always be shrouded from direct sunlight and radiated heat.

The transmitter may be site-tuned to deal with most application conditions, but it is recommended that the following guidelines be adopted wherever relevant.

3.2.1 Safety considerations

Guidelines

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1. Installation must be carried out by suitably trained personnel in accordance with the applicable code of practice.

2. If the equipment is likely to come into contact with aggressive substances, it is the responsibility of the user to take suitable precautions that prevent it from being adversely affected, thus ensuring that the type of protection is not compromised.

Aggressive substances are acidic liquids or gases that may attack metals or solvents that may affect polymeric materials.

Suitable precautions are regular checks as part of routine inspections, or establishing, from the material's datasheet, that it is resistant to specific chemicals.

3. The equipment should only be cleaned with a damp cloth. Do not use solvents.

4. The equipment is not intended to be repaired by the user and is to be replaced by an equivalent certified unit. Repairs should only be carried out by the manufacturer or approved repairer.

5. The transmitter is Double Insulated, and therefore Protective Earthing is not required.

6. Note that if the equipment is used in a manner not specified by the manufacturer, the protection afforded by the equipment may be impaired.

7. To ensure electro-magnetic compatibility in any European member state, it should not be installed in a residential area.

Note

 It is not advisable to mount the transmitter in close proximity to a source of electrical

noise such as a variable-speed drive, or other high-powered electrical device.

Section 3: Installation8

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3.2.2 Environmental considerations

The Rosemount 3107 and 3108 ultrasonic transmitters are Intrinsically Safe (IS) approved for hazardous area installations.

1. The 3107 is designed for open or closed tank installation. It is weatherproof and protected against the ingress of dust

2. The 3108 is designed for open channel flow measurement. It is weatherproof and protected against the ingress of dust

3. Avoid installing the 3107 and 3108 near heat sources

Figure 3-1. Environmental considerations

Section 3: Installation

December 2014

3.3 Mechanical installation

Guidelines

1. Mount the transmitter above the liquid using the 1-in. thread provided, but not closer than 12 in. (0,3 m) to the surface. The transmitter does not detect any liquid surface closer than 12 in. (0,3 m) to the transmitter face. (See “Mounting the transmitter above

the liquid surface” on page 11).

Optional flanges and bracket kits are available to help mounting. (See “Spare parts and accessories” on page 120.)

2. The transmitter should be mounted vertically to ensure a good echo from the liquid surface. The transmitter beam half angle is 6 degrees (See Figure 3-2 on page 10).

3. Obstructions in the tank, or well, may generate echoes which can be confused with the real liquid surface echo. Obstructions within the beam angle generate strong false echoes. Wherever possible, the transmitter should be positioned to avoid false echoes.

Section 3: Installation

December 2014

4. To avoid detecting unwanted objects in the tank or well, it is advisable to maintain a

5. No false echoes are generated if the transmitter is located near the side of the tank or

6. If the transmitter is mounted in an enclosed tank with a domed top, avoid mounting

7. Avoid applications where heavy condensation could form on the transmitter face.

8. If the transmitter is mounted in a stand-off or nozzle, the transmitter face should

9. If the transmitter is used in environments where direct sunlight can cause high surface

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distance of at least 1.3 in. from the center line of the transmitter for every foot (11 cm per meter) range to the obstruction.

well, and the wall is smooth and free of protrusions. However, there will still be a reduction in the echo size. It is recommended that the transmitter be mounted no closer than 12 in. (0,3 m) to the wall to avoid a large reduction in the echo size.

the transmitter in the center of the tank roof because this could act as a parabolic reflector and create unwanted echoes.

protrude at least 0.2 in. (5 mm) into the tank.

temperatures on exposed instruments, a sun-shade is recommended.

Figure 3-2. Considerations when installing in a tank

A. Transmitter is mounted vertically (maximum deviation of 3°). B. 6° beam half angle. C. 1.3 in./ft. (11 cm/m). Minimum of 12 in. (0.3 m).

Section 3: Installation10

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3.3.1 Consider liquid surface conditions

Guidelines

1. Foaming liquids can reduce the size of the returned echo because foam is a poor ultrasonic reflector.

Mount an ultrasonic transmitter over an area of clear liquid, such as near the inlet to a tank or well. In extreme conditions, or where this is not possible, the transmitter may be mounted in a vented stilling tube provided that the inside measurement of the stilling tube is at least 4 in. (100 mm) and is smooth and free from joints or protrusions. It is important that the bottom of the stilling tube stays covered to prevent the ingress of foams.

2. Avoid mounting the transmitter directly over any inlet stream.

3. Liquid surface turbulence is not normally a problem unless it is excessive. The effects of turbulence are minor, but excessive turbulence can be dealt with by fine-tuning the transmitter on site, if necessary.

Section 3: Installation

December 2014

3.3.2 Consider in-tank effects

Guidelines

1. Stirrers or agitators can cause a vortex. Mount the transmitter off-center of any vortex to maximize the return echo.

2. If stirrer blades become uncovered, they create echoes as they pass through the ultrasonic beam. The transmitter can learn to ignore false echoes (see “Learn false

echo” on page 23).

3. In tanks with rounded or conical bottoms, mount the transmitter off-center. If needed, a perforated reflector plate can be installed on the tank bottom directly under the transmitter center line to ensure a satisfactory return echo.

4. Avoid detecting pump casings, as the liquid falls away, by not mounting the transmitter directly above pumps. If this is not possible, fine-tuning of the transmitter on-site may be required.

3.3.3 Mounting the transmitter above the liquid surface

A 1-in. thread is provided to mount the transmitter. The thread form is either BSPP (G1) or NPT, and is marked below the mounting thread.

To help installation, flange accessories and bracket kits are available from Emerson. The accessory flanges supplied are manufactured from PVC and are a full face design. Care must be taken when installing to raised face mating flanges on the tank or vessel to prevent distortion of the PVC flange by over-tightening the bolts. See “Spare parts and accessories” on page 120 for ordering information.

Section 3: Installation

Note

 Never suspend the transmitter by the cable.

Section 3: Installation

December 2014

Bracket mounting

The transmitter is supplied with a purpose made 316 Stainless Steel mounting bracket which should be used to mount the transmitter over the liquid surface. The bracket is designed to fit over the threaded neck of the transmitter and is retained by a locknut (see “1-in. NPT/BSPP

bracket kits” on page 117 for dimensions).

Use a chain or wire through the hole provided in the bracket, which is shaped to ensure that the transmitter will hang perpendicular to the liquid surface. Check that the material of the chain or wire is corrosion resistant to the liquids and any vapors present.

The bracket may be bolted to a suitable cross member above the liquid surface. Ensure that the transmitter is perpendicular to the liquid surface to maximise the return echo size.

Note

 Check that the maximum liquid level will not enter the 12 in. (0.3 m) blanking zone of

 To help with alignment, the echo size (signal strength) can be indicated on the

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the transmitter.

Rosemount 3490 Series Control Unit or a Field Communicator.

Flange mounting

The instrument (accessory) flanges supplied by Emerson are manufactured from PVC and are a full face design. Care must be taken when installing to a raised face mating flange on the tank or vessel to prevent distortion of the PVC flange by over-tightening the bolts. See “Spare parts and

accessories” on page 120 for part numbers.

Mounting from a conduit

The 3107 and the 3108 can be mounted from a conduit using the optional adaptor (03107-7003-0003 and 03107-7003-1004). See “Spare parts and accessories” on page 120.

3.3.4 Open channel flow installations

There are normally two distinct parts to an open channel flow measurement system; the primary element (flow structure) and the secondary element (Head measurement instrumentation). For accurate open channel flow measurement, both parts of the system must be correctly installed. This section explains the important parts of installing the transmitter (secondary element). The flow structure (primary element) installation can be referenced in the British (BS3680) or ISO International standards.

Note

 The transmitter should be free from a situation where it is likely to 'drown' (refer to the

relevant standard for further information)

 The Rosemount 3108 has a factory-fitted Remote Temperature Sensor.

See “Positioning of the remote temperature sensor (3108 only)” on page 14.

 For some installations, the use of a calibration device is mandatory. Emerson offers the

Rosemount Head Verification Device (HVD) for this purpose. See “Spare parts and

accessories” on page 120 for further information.

Section 3: Installation12

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Positioning of the transmitter

The positioning is critical, and should be the correct distance upstream from the flow structure as stated in the relevant standard for your country. For example, in the ISO standards, the distance should be four to five times the maximum height of the water (Hmax) for a thin plate weir, or three to four times Hmax for a flume. For optimum accuracy, position the transmitter’s front face at a height equal to the sum of the maximum flow depth plus the transmitter deadband of 12.2 in. (300 mm) plus an extra 2 in. (50 mm).

Figure 3-3. Choosing the height position above a flow

Section 3: Installation

December 2014

A. Transmitter front face B. Hmax C. Transmitter bottom reference = Hmax + 12.2 in. (300 mm) + 2 in. (50 mm)

It is important that the bottom reference of the transmitter should be related to the datum of the primary measuring device (Figure 3-4).

Figure 3-4. Bottom Reference of a flume or weir

Section 3: Installation

A. Transmitter bottom reference C. Approach channel B. Primary element (e.g. flume, weir) invert D. Flow

Section 3: Installation

December 2014

When setting the bottom reference on a ‘V’ notch weir, it is important the true invert is used and not the meniscus level (Figure 3-5).

Figure 3-5. Bottom reference of a ‘V’ notch weir

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A. Transmitter bottom reference (i.e. true invert) B. Meniscus level

Positioning of the remote temperature sensor (3108 only)

The Rosemount 3108 transmitter has a factory fitted remote temperature sensor. The temperature sensor is enclosed in a M8 x 1.5 threaded stainless steel body.

Figure 3-6 and Figure 3-7 on page 15 show two typical arrangements for installing the

temperature sensor in an open or enclosed chamber. The sensor may be installed in a suitable plastic conduit box and clamped in place using a suitable compression type cable gland.

1. Open weir chamber (Figure 3-6 on page 15)

Mount the remote temperature sensor so that it is representative of the mean air temperature in the chamber and is in a shaded area away from direct sunlight and solar radiation.

2. Enclosed or partially covered flume chamber (Figure 3-7 on page 15)

Mount the remote temperature sensor in the approach channel, in a shaded area away from direct sunlight and solar radiation. In Figure 3-7 on page 15, the sensor is partially covered by grating which helps prevent solar gain. (Full grating is removed for clarity.)

The temperature sensor should be positioned in the weir chamber or flume approach channel so the average air temperature can be accurately measured. The temperature sensor must be protected at all times from direct sunlight and any radiated heat.

In extreme high temperatures, for the best accuracy and stability of level measurement reading, the transmitter should be shrouded to prevent the incidence of direct sunlight and solar radiation. If the flow structure permits, mount the transmitter within the flow channel or chamber.

Section 3: Installation14

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Figure 3-6. Open weir chamber arrangement with Rosemount Head Verification Device

Section 3: Installation

December 2014

Figure 3-7. Enclosed or partially covered flume chamber arrangement

Section 3: Installation

December 2014

3.4 Electrical installation

3.4.1 Connecting the transmitter

The Rosemount 3490 Series is a two-wire loop-powered transmitter accepting power supplies as follows:

 12 to 40 Vdc in a non-hazardous area (ordinary location)

 12 to 30 Vdc in a hazardous area (classified location)

Note

 To comply with the CSA requirements, the transmitters must be powered from a

Rosemount 3490 Series Control Unit or class 2 or separate extra-low voltage (SELV) source.

 Other devices may reset if connecting the transmitter to a multi-drop system while the

loop is powered. De-energize the loop to avoid devices being reset.

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Each transmitter is supplied with a factory-fitted PVC sheathed, two-core, shielded cable for communications and external power supply connections. There are no cable conduit entries and no covers to remove. The cable may be cut to length on site or may be extended using a junction box and suitable extension cable.

See “Wiring to allow HART communication” on page 18 if HART digital communication is required.

Installation in a non-hazardous area (ordinary location)

The 3107 and the 3108 are suitable for non-hazardous (ordinary location) applications.

To connect the transmitter:

1. Make sure that the power supply is disconnected.

2. Connect the cable wires as shown in Figure 3-8 on page 17, taking note of the required voltage of 12 to 40 Vdc for non-hazardous (ordinary location) applications.

Installation in a hazardous area (classified location)

The 3107 and the 3108 are suitable for Intrinsically Safe (IS) applications. Appendix B: Product

Certifications has the safety approval information and control drawings.

When the transmitters are used with a Rosemount 3490 Series Control Unit, no additional safety barriers are required as the control unit output is Intrinsically Safe.

If powering the transmitter from any other source, ensure a suitable Intrinsically Safe (IS) barrier is fitted in the non-hazardous area. The barrier must be chosen such that its output parameters Uo, Io and Po are less than Ui, Ii and Pi of the transmitter (see Appendix B: Product Certifications for the parameter values). In addition, the sum of the capacitance and the inductance of the transmitter and any extra cable fitted must not exceed the maximum specified for the barrier. Suitable barriers include the MTL products 706, 706S, 787, and 787S.

Section 3: Installation16

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To connect the transmitter:

1. Make sure that the power supply is disconnected.

2. Connect the cable wires (see Figure 3-8 on page 17), taking note of the restricted

Note

 Other devices may reset if connecting the transmitter to a multi-drop system while the

 Make sure that the instruments in the loop are installed according to intrinsically-safe

Figure 3-8. Wiring diagram

Section 3: Installation

December 2014

voltage of 12 to 30 Vdc for hazardous area (classified location) applications.

loop is powered. De-energize loop to avoid devices being reset.

field wiring practices and control drawings, when applicable.

A. Black: 0 Vdc B. Red: 12 to 40 Vdc (for non-hazardous area) or 12 to 30 Vdc from protective barrier (for hazardous area) C. Non-hazardous area: connect cable screen to standard ground (earth) or

hazardous area: connect cable screen to intrinsically safe ground (earth)

D. Remote temperature sensor (3108 only)

3.4.2 Remote temperature sensor (on 3108 only)

The factory-fitted remote temperature sensor on the 3108 may be installed in a hazardous area without the need for any additional protection or barriers.

Note

 See also “Positioning of the remote temperature sensor (3108 only)” on page 14.

Section 3: Installation

December 2014

3.4.3 Wiring to allow HART communication

If HART communications is required, a 250 Ohm (minimum), 0.25 W load resistor must be installed in the loop. (See “Load limitations” on page 114).

Note

 When the transmitter is used with a Rosemount 3490 Series Control Unit, there is no

need to install an external load resistor in the loop because a suitable resistor is built in to the control unit.

If the transmitter is being supplied through a safety barrier, ensure the type chosen will pass HART information.

After the load resistor is installed, a Field Communicator can be connected across the load resistor, or across the loop at any point downstream of the load resistor. It is the responsibility

of the installer to ensure that any Field Communicator used in the hazardous area is suitably certified.

Note

 Make sure that the instruments in the loop are installed according to intrinsically-safe

field wiring practices and control drawings, when applicable.

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3.4.4 Lightning / surge protection and other loop devices

If the area is prone to lightning strikes or voltage surges, a suppressor device may be installed between the transmitter and the control unit.

If an additional loop-powered device or separately powered device is included in the two-wire loop, ensure the transmitter receives a minimum voltage of 12 Vdc (see “Load limitations” on

page 114).

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Section 4 Configuration

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 19

Command parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 20

Configuration parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 31

4.1 Overview

The Rosemount 3107 and Rosemount 3108 support HART communications, which may be used to program or interrogate the transmitters from any point on the two-wire loop.

This section contains information on configuring the transmitters using a Field Communicator, PC with AMS, or Rosemount 3490 Series Control Unit.

Rosemount 3490 Series control unit

Section 4: Configuration

December 2014

The product manual 00809-0100-4841 provides detailed instructions on installation and operation of the control unit.

A full menu map showing how to access transmitter parameters using the control unit’s menu system is in Appendix Appendix C: Rosemount 3490 Series Universal Control Unit. For convenience, the parameter identification numbers (P*** and D***) are used in parameter headings and descriptions in this configuration section.

When using the control unit, use the Enter ( ) key to start editing a configuration parameter and then use the arrow keys to change the setting. Changes are confirmed by pressing the Enter key, or abandoned by pressing the Esc key. Commands e.g. Set As Empty are run using the

Enter () key.

Note

 The Rosemount 3490 Control Unit software must be version 3.40 or later.

Field Communicator and AMS

For convenience, Field Communicator fast key sequences are labeled “Fast Keys” for each software function below the appropriate headings.

Example software function

Fast Keys

1, 2, 3, etc.

Section 4: Configuration

When using a Field Communicator, some configuration changes are sent to the transmitter by pressing “SEND”. AMS configuration changes are implemented when the “Apply” button is clicked.

Connect the Field Communicator leads to the transmitter, and turn on the Field Communicator by pressing the ON/OFF key. The Field Communicator will search for a HART-compatible device

Section 4: Configuration

Set Base Units (ft)

m ft in

ENTER

ABORT

(Field Communicator Screen)

Base Units

Esc=Quit =Edit

metric

(Rosemount 3491 Screen)

December 2014

and indicate when the connection is made. If the Field Communicator fails to connect, it indicates that no device was found. If this occurs, check the lead connections and re-try.

A full menu map showing how to access transmitter parameters using the Field Communicator is in Appendix Appendix D: Field Communicator.

4.2 Command parameters

4.2.1 Base units

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Fast Keys

3, 4, 3, 3

When the transmitter is shipped from the factory, the default factory setting for Base Units is “metric” or “imperial ft” depending on the model order code (see “Ordering information” on

page 118).

Note

 Keep a record of your programmed settings. Changing base units resets parameters to

their default factory settings in the appropriate units.

Field Communicator

To view or change the transmitter base units:

1. From the Home screen, select 3: Service Tools.

2. Select 4: Maintenance.

3. Select 3: Utilities.

4. Select 3: Set Base Units.

5. Use the up and down navigation keys to select new base units, and then save the selection by pressing “ENTER”.

6. Press “ENTER” to select 1: Yes (in response to “Are you sure?”).

7. Use the left navigation key to return to the previous menu.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To view or change the transmitter base units:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select SYSTEM.

Section 4: Configuration

Reference Manual

Select:

1. Present Depth

2. Set as Empty

3. Exit

2. Set as Empty

ENTER

ABORT

(Field Communicator Screen)

00809-0200-4840, Rev BA

4. Select Base Units.

5. Follow on-screen instructions to select and confirm the new base units.

6. Select “Quit” to exit to the previous menu.

7. To get the same base units on the control unit, switch the power off and then on again. The control unit prompts for the transmitter’s Bottom Reference value (page 35) in the new base units.

Note

 The display units (reported units) of the transmitter’s PV (Process Value) can be

changed to metric or imperial measurement units using the parameter Primary Variable Units (page 51), but this does not automatically re-scale the PV.

4.2.2 Set as empty

Section 4: Configuration

December 2014

Fast Keys

2, 2, 2, 3, 2

If the bottom reference is unknown and the tank is empty, the transmitter can change the

Bottom Reference value (page 35) to the Distance measurement with the tank empty.

P010 = (D910 - P060)

Where:

P010 = Bottom Reference setting. D910 = Distance measurement (see page 90). P060 = Distance Offset setting (see page 40).

Field Communicator

To select the Set As Empty command:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 2: Level.

4. Select 3: Present Depth.

5. Select 2: Set as Empty, and then press “ENTER”.

Section 4: Configuration

Note

 When messages appear, take appropriate action if needed and press “OK”.

 Set As Empty is also available at Fast Key sequence 2, 1, 2.

Section 4: Configuration

(Rosemount 3491 Screen)

(Field Communicator Screen)

December 2014

Rosemount 3490 Series Control Unit

Reference Manual

00809-0200-4840, Rev BA

To select the Set As Empty command:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY.

4. Select SET AS EMPTY.

5. Follow on-screen instructions to perform the Set As Empty action. (If prompted to change the mode to off-line, press the Enter key).

6. Select “Quit” to exit to the previous menu.

4.2.3 Present depth

Fast Keys

If the Bottom Reference is unknown but the present liquid depth is known, the transmitter can set the Bottom Reference value using the Present Depth value, the live distance measurement, and optional offsets:

P010 = (Depth + D910) - (P060 + P069)

Where:

SET AS EMPTY

Esc=Quit =Start

2, 2, 2, 3, 1

P010 = Bottom Reference (see page 35). Depth = Present Depth setting (live level value snapshot but can be edited). D910 = Distance measurement (see page 90). P060 = Distance Offset (see page 40). P069 = Level Offset (see page 41).

Field Communicator or AMS

To use the Present Depth action:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 2: Level.

4. Select 3: Present Depth.

5. Select 1: Present Depth, and then press “ENTER”.

6. Follow the on-screen instructions to input the present depth, which will then change the transmitter’s bottom reference using the calculation.

7. Press “ENTER” to confirm the input present depth.

Select:

1. Present Depth

2. Set as Empty

3. Exit

ABORT

ENTER

Section 4: Configuration

Reference Manual

(Rosemount 3491 Screen)

(Field Communicator Screen)

00809-0200-4840, Rev BA

Note

 When messages appear, take appropriate action if needed and press “OK”.

 Present Depth is also available at Fast Key sequence 2, 1, 2.

Rosemount 3490 Series Control Unit

To select the Set As Empty command:

Section 4: Configuration

December 2014

1. From the Main Menu screen, select SETUP

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY.

4. Select Present Depth.

5. Follow the on-screen instructions to input the present depth, which will then change the transmitter’s bottom reference using the calculation. (If prompted to change the mode to “off-line”, press the Enter key).

6. Select “Quit” to exit to the previous menu.

4.2.4 Learn false echo

Fast Keys

The transmitter can be manually told the live Distance (on page 90) is being calculated from a

false target echo and that echo can therefore be ignored.

If there is another false target echo, repeat the learning process again. A maximum of four false echoes can be learnt.

Field Communicator or AMS

To ignore a false target echo:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

2, 2, 6, 6

Present Depth

1.045m

Esc=Quit =Edit

1. Number of False Echoes

2. Distance D910

3. Echo Size D911

4. Target Echoes D913

5. Clear False Echoes

6. Learn False Echo

7. Auto Tank Map

8. False Echo Data

HELP

SAVE

HOME

10.674 ft 75 %

Section 4: Configuration

3. Select 6: False Echoes.

4. Select 6: Learn False Echo.

5. Wait three seconds while the transmitter learns to ignore the false echo.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Section 4: Configuration

(Rosemount 3491 Screen)

False Echoes

1. Number of False Echoes

2. Distance D910

3. Echo Size D911

4. Target Echoes D913

5. Clear False Echoes

6. Learn False Echo

7. Auto Tank Map

8. False Echo Data

7. Auto Tank Map

SAVE

HOME

HELP

10.674 ft 75 %

(Field Communicator Screen)

December 2014

Rosemount 3490 Series Control Unit

Reference Manual

00809-0200-4840, Rev BA

To ignore a false target echo:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select FALSE ECHO ACTION.

5. Select Learn False Echo.

6. Follow the on-screen instruction (“Start”) to ignore a false echo. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

Note

 To clear all learned false echoes, see Clear False Echoes on page 75.

 To edit existing false echo data, see False Echo Data on page 74.

 Use the “Auto Tank Map” feature for automatic learning (page 24).

4.2.5 Auto tank map

LEARN FALSE ECHO

Esc=Quit =Start

Fast Keys

2, 2, 6, 7

The transmitter can automatically map up to four echoes from false targets within an empty tank. The tank needs to be empty so that echoes from all false targets are exposed.

Note

 Set the Bottom Reference (page 35) before using Auto Tank Map.

Field Communicator or AMS

To automatically map up to four echoes from false targets:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 6: False Echoes.

4. Select 7: Auto Tank Map.

5. Wait while the transmitter learns about the empty tank to ignore the false echoes. This process takes less than one minute.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Section 4: Configuration

Reference Manual

Esc=Quit =Start

AUTO TANK MAP

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

Rosemount 3490 Series Control Unit

To automatically map up to four echoes from false targets:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select FALSE ECHO ACTION.

5. Select Auto Tank Map.

6. Follow the on-screen instruction (“start”) to ignore a false echo.

7. Wait while the transmitter learns about the empty tank to ignore the false echoes. The

Section 4: Configuration

December 2014

(Press the Enter key if prompted to change the mode to “off-line”).

process takes less than one minute.

8. Select “Quit” to exit to the previous menu.

Note

 To clear all learned false echoes, see Clear False Echoes on page 75.

 To edit existing false echo data, see False Echo Data on page 74.

 Use the “Learn False Echo” feature manual learning (page 23).

4.2.6 Simulation of PV

Fast Keys

The transmitter simulations automatically cycle the PV between the bottom of the tank and the nearest measurable distance. The cycle direction is given by the name of the simulation mode selected.

Simulation modes are:

 “Run up” – cycles up, and then down, repeatedly until stopped.

 “Run down” – cycles down, and then up, repeatedly until stopped.

 “Run from Zero” – as “Run up” except the PV initially starts from 0.

A single cycle takes 100 seconds to complete. The Current Output responds according to the PV.

3, 5, 1

Section 4: Configuration

The cycling may be paused with the “pause” mode, and then re-started by selecting another simulation mode.

To stop the cycling, select the “normal” mode.

Section 4: Configuration

1. Simulation Enabled

2. Change Mode

3. Primary Variable D900

4. Current Output D906

5. Percentage Current D905

2. Change Mode

SAVE

HOME

HELP

OFF

35.0078 ft

14.40 mA

19.0 %

(Field Communicator Screen Shown)

(Rosemount 3491 Screen)

December 2014

Field Communicator or AMS

To use the simulation tool:

1. From the Home screen, select 3: Service Tools.

2. Select 5: Simulate.

3. Select 1: Primary Variable.

4. Select 2: Change Mode.

5. Select a simulation mode e.g. 2: Run Up.

6. The simulation is now running, and Simulation

7. Monitor the parameters Primary Variable (PV), Current Output, and Percentage of

8. When finished, change the mode to “Normal”.

Reference Manual

00809-0200-4840, Rev BA

Enabled is “ON”.

Current Output on the LCD screen.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To use the simulation tool:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select SYSTEM.

4. Select Simulation.

5. Select a simulation mode.

6. When finished, select “Quit” to exit to the previous menu.

SIMULATION

Normal

Esc=Quit =Edit

Section 4: Configuration

Reference Manual

Utilities

1. Restart Device

2. Load Defaults

3. Set Base Units

1. Restart Device

SAVE

HOME

HELP

(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4.2.7 Restart device

Section 4: Configuration

December 2014

Fast Keys

3, 4, 3, 1

This re-starts the transmitter as if the power has been interrupted.

Field Communicator or AMS

To restore the original factory configuration:

1. From the Home screen, select 3: Service Tools.

2. Select 4: Maintenance.

3. Select 3: Utilities.

4. Select 1: Restart Device.

5. When the message “About to restart the transmitter” appears, press “OK” to continue (or “ABORT” to not continue).

6. Select 1: Yes to restart the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

RESTART DEVICE

Section 4: Configuration

To restore the original factory configuration:

1. From the Main Menu screen, select SETUP.

Esc=Quit =Start

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select SYSTEM, and then select RESTART DEVICE.

4. Follow the on-screen instruction (“Start”) to restart the transmitter. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

5. Select “Quit” to exit to the previous menu.

Section 4: Configuration

Utilities

1. Restart Device

2. Load Defaults

3. Set Base Units

2. Load Defaults

SAVE

HOME

HELP

(Field Communicator Screen)

LOADS FACTORY DEFAULT VALUES Esc=Quit =Start

DEFAULTS

(Rosemount 3491 Screen)

December 2014

4.2.8 Load defaults

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

3, 4, 3, 2

This restores the transmitter parameters to the factory default values for the selected base units. This is sometimes necessary, particularly if the data held in the transmitter is in doubt.

Note

 Restoring the factory defaults values overwrites all site entered data.

After loading the factory defaults, the transmitter automatically re-starts and communication is interrupted until the re-start is complete.

Field Communicator or AMS

To restore the factory default settings of the transmitter:

1. From the Home screen, select 3: Service Tools.

2. Select 4: Maintenance.

3. Select 3: Utilities.

4. Select 2: Load Defaults.

5. When the message “About to restore factory defaults” appears, press “OK” to continue (or “ABORT” to not continue).

6. Select 1: Yes to restore the factory defaults.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To restore the factory default settings of the transmitter:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select SYSTEM, and then select DEFAULTS.

4. Follow the on-screen instructions (select “Start” and answer “Yes”) to restore the factory defaults.

(Press the Enter ( ) key if prompted to change the mode to “off-line”).

5. Select “Quit” to exit to the previous menu.

Section 4: Configuration

Reference Manual

Choose analog output level

1. 4mA

2. 20mA

3. Other

4. End

1. 4mA

ENTER

ABORT

(Field Communicator Screen)

Fix Current

0.000 Esc=Quit =Edit

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4.2.9 Simulate current output

Section 4: Configuration

December 2014

Fast Keys

3, 5, 2, 1

This forces a fixed output current in the range 4 to 20 mA. This feature temporarily overrides the normal function of the transmitter’s PV driving the 4–20mA Current Output until exiting to the previous menu.

Note

 The simulation is automatically cancelled after 20 minutes, and the output current

returns to representing the transmitter’s PV.

Field Communicator or AMS

To fix the output current:

1. From the Home screen, select 3: Service Tools.

2. Select 5: Simulate.

3. Select 2: Loop Current.

4. Select 1: Loop Test.

5. Select the required output current e.g. 1: 4mA.

6. When a message appears saying the output current is fixed, press “OK”.

Section 4: Configuration

7. Select 4: End to exit and restore the output current to normal.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To fix the output current:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select SYSTEM, and then select TRIM.

4. Select Fix Current.

5. Follow on-screen instructions to input the required output current. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. When finished, select “Quit” to exit to the previous menu.

Section 4: Configuration

Analog Calibration

1. D/A Trim

SAVE

HOME

HELP

(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

4.2.10 Trim 4mA / Trim 20mA

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

3, 4, 1, 1

This is for calibrating the 4mA and 20mA output current from the transmitter. The output current is temporarily set to 4mA and 20mA. Measure the actual output current and then input that mA value to re-calibrate. The output current resumes normal operation after exiting.

Note

 The re-calibration procedure is automatically cancelled after 20 minutes of inactivity,

and the previous calibration is restored.

Field Communicator or AMS

To re-calibrate the 4mA and 20mA output current:

1. From the Home screen, select 3: Service Tools.

2. Select 4: Maintenance,

3. Select 1: Analog Calibration.

4. Select 1: D/A Trim.

5. Follow the instruction “Connect reference meter”, and then press “OK”.

6. Input the measured mA from the reference meter, and press “ENTER”.

7. Select 1: Yes.

8. Select “OK” to continue to calibrate the 20mA output current.

9. Input the measured mA from the reference meter, and press “ENTER”.

10. Select 1: Yes. (The output current now returns to normal operation).

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To re-calibrate the 4mA output current:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select SYSTEM, select TRIM, and then select Tr im 4mA.

4. Connect a reference meter.

Esc=Quit =Start

TRIM 4mA

Section 4: Configuration

Reference Manual

Esc=Quit =Start

TRIM 20mA

(Rosemount 3491 Screen)

Message P000 MESSAGE

MESSAGE

ESC

DEL ENTER

HELP

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(Field Communicator Screen)

00809-0200-4840, Rev BA

5. Follow the on-screen instructions to start the re-calibration feature.

6. Input the measured mA from the reference meter, and select “Save”.

7. Select the “Quit” instruction to exit.

To re-calibrate the 20mA output current:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select SYSTEM, select TRIM,

4. Follow the on-screen instructions to start the re-calibration feature.

5. Measure the actual output current, and input that new value.

Section 4: Configuration

December 2014

(Press the Enter ( ) key if prompted to change the mode to “off-line”).

and then select Trim 20mA.

(Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

4.3 Configuration parameters

4.3.1 Message (P000)

Fast Keys

This allows a general 32-character message to be edited (12 characters if using a Rosemount 3490 Series Control Unit). It can be used for any purpose, such as recording the initials of the person who programmed it, a support contact number, details of last programming change, etc.

Field Communicator or AMS

To view or change the message:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 4: HART / Identity.

4. Select 1: Identity.

2, 2, 4, 1, 3

Section 4: Configuration

5. Select 3: Message P000.

6. Input the new message, and then press “ENTER” to save it.

7. Press “SEND” to update the transmitter.

Section 4: Configuration

Message MESSAGE Esc=Quit =Edit

P000

(Rosemount 3491 Screen)

Tag P001 3107

3107

ESC

DEL ENTER

HELP

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(Field Communicator Screen)

Tag P001 3107 Esc=Quit =Edit

(Rosemount 3491 Screen)

December 2014

Rosemount 3490 Series Control Unit

To view or change the message:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY, and then select IDENTITY.

4. Select Message.

5. Follow on-screen instructions to input and save the message.

6. Select “Quit” to exit to the previous menu.

4.3.2 Tag (P001)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 4, 1, 1

This is for editing an electronic ‘label’ of up to 8 characters for the transmitter. The tag is typically a reference number, but it can also be used to identify the location or duty of the transmitter in plant item terms.

Note

 This tag helps identify the transmitter being interrogated when using a HART Master

Device such as the Rosemount 3490 Series Control Unit.

Field Communicator or AMS

To view or change the tag:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 4: HART / Identity.

4. Select 1: Identity.

5. Select 1: Tag P001.

6. Input the new tag, and then press “ENTER” to save it.

7. Press “SEND” to update the transmitter.

Rosemount 3490 Series Control Unit

To view or change the tag:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY, and then select IDENTITY.

Section 4: Configuration

Reference Manual

Descriptor P002 3107 XMTR

3107 XMTR

ESC

DEL ENTER

HELP

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(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4. Select Ta g.

5. Follow on-screen instructions to input and save the tag.

6. Select “Quit” to exit to the previous menu.

4.3.3 Descriptor (P002)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 4, 1, 2

This is for editing up to 16 characters, and can be used for any purpose e.g. to expand on

Tag (page 32) if needed.

Field Communicator or AMS

To view or change the descriptor:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 4: HART / Identity.

4. Select 1: Identity.

5. Select 2: Descriptor P002.

6. Input the descriptor, and then press “ENTER” to save it.

7. Press “SEND” to update the transmitter.

Rosemount 3490 Series Control Unit

To view or change the descriptor:

1. From the Main Menu screen, select SETUP.

Descriptor P002 3107 XMTR Esc=Quit =Edit

Section 4: Configuration

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY, and then select IDENTITY.

4. Select Descriptor.

5. Follow on-screen instructions to input and save the descriptor.

6. Select “Quit” to exit to the previous menu.

Section 4: Configuration

Final Assembly Number P004 123456

EXIT

HELP

(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

4.3.4 Final assembly number (P004)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 4, 1, 8

This is a read-only, factory set parameter showing a multiple-digit number. It is used by the factory to track the manufacturing history of an individual transmitter.

Field Communicator or AMS

To view the final assembly number:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 4: HART / Identity.

4. Select 1: Identity.

5. Select 8: Final Assembly Number P004.

6. Press “EXIT” to exit to the previous menu.

Rosemount 3490 Series Control Unit

To view the final assembly number:

Final Assy No. P004 123456

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select SYSTEM.

4. Select FIXED.

5. Select Final Assy No.

6. Use the ENTER ( ) key to exit to the previous menu.

Section 4: Configuration

Reference Manual

Serial Number P005 123456

EXIT

HELP

(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4.3.5 Serial number (P005)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 4, 1, 9

This is a read-only, factory set parameter showing a multiple-digit number. It is used by the factory to identify an individual transmitter.

Field Communicator or AMS

To view the serial number:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 4: HART / Identity.

4. Select 1: Identity.

5. Select 9: Serial Number P005.

6. Press “EXIT” to exit to the previous menu.

Rosemount 3490 Series Control Unit

To view the serial number:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

Serial No. P005 123456

3. Select SYSTEM.

4. Select FIXED.

5. Select Serial Number.

6. Use the ENTER ( ) key to exit to the previous menu.

4.3.6 Bottom reference (P010)

Fast Keys

This is the transmitter’s Bottom Reference setting. It is the distance measured vertically along the ultrasonic beam path from the user preferred sensor reference point to the zero level of a tank or an open channel (see Figure 4-1 on page 37).

The zero level establishes where the transmitter starts to measure the process value. It is not necessary to have the 4 mA output start at the zero level, and the 4 mA starting pointing can be any liquid height above or below this zero level.

Note

 This parameter is important for calibrating and configuring the transmitter.

2, 2, 1, 2

Section 4: Configuration

Bottom Reference P010

40.000 ft

ESC

DEL ENTER

HELP

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(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

Field Communicator or AMS

To view or change the bottom reference:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 1: Basic Setup.

4. Select 2: Bottom Reference P010.

5. Input the new bottom reference, and then press “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Rosemount 3490 Series Control Unit

To view or change the bottom reference:

Reference Manual

00809-0200-4840, Rev BA

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

Bottom Ref. P010

40.000ft Esc=Quit =Edit

3. Select DUTY.

4. Select Bottom Ref.

5. Follow the on-screen instructions to input and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

Section 4: Configuration

Reference Manual

Abbreviations: TRP= Tank Reference Point SRP = Sensor Reference Point UPSRP = User Preferred SRP

4–20mA/HART

Rosemount

3107 or 3108

Rosemount 3490 Series

SRP

Zero Level

Bottom Reference (P010)

Lower Blanking (P063)

Upper

Blanking

(P023)

Distance (D910)

Level SV (D901)

Distance TV (D902)

Level Offset

(P069)

Distance Offset (P060)

TRP

UPSRP

Liquid Level

00809-0200-4840, Rev BA

Figure 4-1. Tank geometry

Section 4: Configuration

December 2014

Section 4: Configuration

Data processing sequence:

1. Echoes are processed that occur between Upper Blanking (P023) and Lower Blanking (P063).

2. D910 is derived from the Target Echo’s Time of Flight and the calculated Speed of Sound: D910 = (Time of Flight x Speed of Sound) / 2

3. D902 = (D910 - P060)

4. Liquid Level = (P010 - D902)

5. D901 = (Liquid Level + P069)

Section 4: Configuration

Upper Blanking P023

1.000 ft

ESC

DEL ENTER

HELP

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(Rosemount 3491 Screen)

December 2014

4.3.7 Upper blanking (P023)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 5, 5

This defines a zone close to the transmitter where echoes are to be ignored. Establishing this zone eliminates echoes from false targets such as mounting fittings or the end of stub pipes.

Enter the vertical distance from the transmitter face to where a valid surface echo can be detected. See Figure 4-1 on page 37 for this zone in a tank geometry illustration.

Note

 In applications where elevated ambient temperatures of around 50 to 60 °C are

experienced, together with poor liquid surface conditions (excessive surface agitation, foam, etc.) at a high level and within 0.5 m of the transducer face, the transmitter may see a false echo and report a false high level measurement.

The factory default value of this parameter is 0.3 m, measured down from the transducer face. If it is possible to operate with an increased value between 0.3 and 0.5 m, then setting P023 to a value of 0.5 m eliminates the false echo. Trying several different values is recommended as a smaller value of P023, if the application requires, may be possible. See also Threshold 1 Size (page 69) for related information.

 The upper blanking distance should not be set to less than the factory default setting.

 The pulse transmission stops if the sum of the Lower Blanking (page 41) and Upper

Blanking and is greater than the Bottom Reference (page 35).

Field Communicator or AMS

To view or change the upper blanking distance:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 5: Engineering.

4. Select 5: Upper Blanking P023.

5. Input the new upper blanking distance, and press “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To view or change the upper blanking distance:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

Upper Blanking P023

1.000ft Esc=Quit =Edit

Section 4: Configuration

Reference Manual

(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4. Select Upper Blanking.

5. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

4.3.8 Lower blanking (P063)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 5, 6

This defines the zone above the Bottom Reference (page 35) where echoes are ignored. The zone eliminates echoes from false targets at the bottom of the tank e.g. pumps uncovered as the liquid level decreases.

Note

 See Figure 4-1 on page 37 for this zone in a tank geometry illustration.

 The pulses transmission stops if the sum of the Upper Blanking (page 62) and

Lower Blanking is greater than the Bottom Reference (page 35).

Field Communicator or AMS

To view or change the lower blanking distance:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

Lower Blanking P063

0.000 ft

wsq

Lock

Shift

HELP

DEL ENTER

iko

@ &

á ü

ESC

3. Select 5: Engineering.

4. Select 6: Lower Blanking.

5. Input the new lower blanking distance, and press “ENTER” to save it.

Section 4: Configuration

6. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To view or change the lower blanking distance:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select Lower Blanking.

Lower Blanking P063

0.000ft Esc=Quit =Edit

Section 4: Configuration

Distance Offset P060

0.000 ft

ESC

DEL ENTER

HELP

wsq

Lock

Shift

@ &

á ü

iko

(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

5. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

4.3.9 Distance offset (P060)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 2, 2

This defines the distance from the Sensor Reference Point (SRP) to the User Preferred Sensor Reference Point (UPSRP).

Note

 See Figure 4-1 on page 37 for these points in a tank geometry illustration.

The distance offset is subtracted from the live Distance value (page 90) to produce the read-only Distance / Tertiary Variable value (see page 86).

Note

 The live Distance value is not affected by changes to the distance offset.

Field Communicator or AMS

To view or change the distance offset:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 2: Level.

4. Select 2: Distance Offset P060.

5. Input the new distance offset, and press “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To view or change the distance offset:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY.

4. Select Distance Offset.

Distance Offset P060

0.0000ft Esc=Quit =Edit

Section 4: Configuration

Reference Manual

Level Offset P069

0.000 ft

ESC

DEL ENTER

HELP

wsq

Lock

Shift

@ &

á ü

iko

(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

5. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

4.3.10 Level offset (P069)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 2, 4

This defines the distance from the Tank Reference Point (TRP) to the transmitter’s Bottom Reference. The level offset is added to the measured level to produce the read-only

Level / Secondary Variable value (page 85).

Note

 See Figure 4-1 on page 37 for these points in a tank geometry illustration.

Field Communicator or AMS

To view or change the level offset:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 2: Level.

4. Select 4: Level Offset P069.

5. Input the new level offset, and press “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Section 4: Configuration

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To view or change the level offset:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY.

4. Select Level Offset.

5. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

Level Offset P069

0.0000ft Esc=Quit =Edit

Section 4: Configuration

(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

4.3.11 Tank shape / non-linear profile (P011)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 3, 2

This selects the shape of a tank or an open channel, and establishes the linear or non-linear relationship between the live liquid level (height) and the process value (PV) derived from that level.

Note

 The displayed (reported) measurement units for the output PV are set using the

Primary Variable Units parameter (page 51). Changing these units does not automatically re-scale the output PV value.

The transmitter is pre-programmed with popular profiles that are mathematical formulas to convert a linear level reading to a flow or volumetric process value (PV). The Current Output is then driven by the flow or volumetric PV.

The profile options are described in the following sections:

 “Contents (volume) measurement” on page 43

 “Flow measurement” on page 48

Field Communicator or AMS

To change the tank shape / non linear profile:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

Select Non-Linear Profile: (Linear)

Linear

Linear Special Plotted Horizontal Cylinder Flat Spherical Horizontal Cylinder Domed Flume/weir (3/2) V notch (5/2)

ABORT

ENTER

3. Select 3: Profiling.

4. Select 2: Set Non-Linear Profile.

5. Select a new profile, and then press “Enter” to save the selection.

6. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

 The selected profile can be viewed at Fast Key sequence 2, 2, 3, 3.

Rosemount 3490 Series Control Unit

To view or change the tank shape:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY.

4. Select Tank S h a p e.

Tank Shape P011 Linear Esc=Quit =Edit

Section 4: Configuration

Reference Manual

00809-0200-4840, Rev BA

5. Follow the on-screen instructions to select and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

4.3.12 Contents (volume) measurement

There are 5 shape options available to select, including:

 Tank shape/NLP (P011) = “Linear” (see page 43)

 Tank shape/NLP (P011) = “Special Plot” (see page 43)

 Tank Shape/NLP (P011) = “Horizontal Cyl Flat” (see page 46)

 Tank Shape/NLP (P011) = “Spherical” (see page 46)

 Tank Shape/NLP (P011) = “Horizontal Cyl Dome” (see page 47)

Tank shape/NLP (P011) = “Linear”

Section 4: Configuration

December 2014

This default setting is for level or volume (content) measurements involving a tank with a constant cross-section. When “Linear” is selected, the level or volume is the liquid height above the zero level multiplied by a scaling factor. If volume is not required, the Scale Factor parameter (page 52) is set to 1.0 unless other measurement units for the output PV are required.

The volume of the contents is calculated by entering the volume-per-meter of height into the Scale Factor parameter (page 52). If the liquid level is being measured in feet or inches, enter the volume-per-feet or volume-per-inch respectively.

Tank shape/NLP (P011) = “Special Plot”

When selecting “Special Plot”, parameters Profile Point 1 to 10 (page 55) can be edited to plot the unique profile of an irregular shaped tank or open channel (see Figure 4-2 on page 44).

To derive the 10 profile points, it is necessary to have tabulated or graphical data to relate the process value (PV) to the live liquid height. Figure 4-3 on page 45 shows an example graph of PV versus Liquid Height. In the example, 60% of the maximum height on the X-axis relates to a percentage of the maximum PV on the Y-axis. The related percentage, say 55%, is entered into parameter Profile Point 6.

The transmitter will interpolate linearly between the plotted points to give an accurate curve fit, which will determine the output PV from the live level (height) measurement.

Each live level measurement is converted into a percentage (0 to 100%), which is proportional to the maximum height. In graph terms, the converted percentage corresponds to an X ordinate on the X-axis. Using this X ordinate, the Y ordinate is then calculated to get a percentage proportional to the maximum PV. This percentage is multiplied by the maximum height to get the output process value (PV).

Section 4: Configuration

Rectangular

Weir

V-notch

Weir

4–20mA/HART

Rosemount

3107 or 3108

Maximum Height

Profile Height (P014)

Bottom Reference (P010)

Rosemount 3490 Series

December 2014

Setting-up Procedure for “Special Plot” Option:

1. Select the displayed (reported) units for the output PV (see page 51).

2. Draw the graph of PV versus Liquid Height, and note the maximum points.

3. Enter the maximum liquid height into Profile Height (page 53).

4. Enter the maximum volume or flow into PV Scale Factor (page 52).

5. Enter the distance from the transmitter face to the zero point (Y=0) into the Bottom

6. Use parameters Profile Point 1 (P030) to Profile Point 10 (P039) to enter the

Figure 4-2. Two-stage weir cross-section

Reference Manual

00809-0200-4840, Rev BA

Reference parameter (page 35).

percentage values that relate to the X-axis fixed percentages.

Note

 The origin (0,0) is always used as the start point. It is not a parameter.

 It is possible the process value (PV) at the maximum height is less than 100% of the

maximum volume or flow. (See Figure 4-4 on page 45).

Section 4: Configuration

Reference Manual

Maximum Process Value (PV)

Maximum Height

(Entered Percentages Relating Output PV to Maximum PV)

(Fixed Percentages Relating Height to Maximum Height)

10%

20%

30%

40%

50% 60%

70% 80%

90%

100%

P030

P031

P032

P033

P035

P036

P037

P038

P039

P034

0,0

Maximum Process Value (PV)

Maximum Height

(Entered Percentages Relating Output PV to Maximum PV)

(Fixed Percentages Relating Height to Maximum Height)

10%

20%

30%

40%

50% 60%

70% 80%

90%

100%

P030

P031

P032

P033

P035

P036

P037

P038

P039

P034

00809-0200-4840, Rev BA

Figure 4-3. Graph 1 of PV versus Height

Section 4: Configuration

December 2014

0,0

Figure 4-4. Graph 2 of PV versus Height

Section 4: Configuration

December 2014

Tank Shape/NLP (P011) = “Horizontal Cyl Flat”

This Horizontal Cylinder With Flat Ends setting is applicable when volume measurements are needed from a horizontally-oriented cylindrical tank with a constant diameter (see Figure 4-5 on

page 47 for a cross-sectional view).

The volume is calculated from the live level measurement, the full volume of an ideal cylindrical tank, and the diameter of that tank.

Setting-up Procedure for “Horizontal Cyl Flat”:

1. Use the Tank Shape/NLP (P011) parameter to select the option “Horizontal Cyl Flat”.

2. Enter the full volume into the PV Scale Factor parameter (page 52).

3. Enter the tank diameter into the Profile Height / Power Factor parameter (page 53).

Tank Shape/NLP (P011) = “Spherical”

This setting is applicable when volume measurements are needed from a spherical tank with a constant diameter (see Figure 4-5 on page 47 for a cross-sectional view).

Reference Manual

00809-0200-4840, Rev BA

The volume is calculated from the liquid level measurement and the full volume of the ideal spherical tank.

Setting-up Procedure for “Spherical”:

1. Use the Tank Shape/NLP (P011) parameter to select “Spherical”.

2. Enter the full volume into the PV Scale Factor parameter (page 52).

3. Enter the tank diameter into the Profile Height / Power Factor parameter (page 53).

Section 4: Configuration

Reference Manual

P013 = Full Volume of Ideal Cylindrical or Spherical Tank of Constant Diameter P014

4–20mA/HART

Rosemount

3107 or 3108

Rosemount 3490 Series

Profile

Hei

t (P014

)

Bottom Reference (P010)

00809-0200-4840, Rev BA

Figure 4-5. Cylindrical or spherical tank cross-section

Section 4: Configuration

December 2014

Tank Shape/NLP (P011) = “Horizontal Cyl Dome”

This Horizontal Cylinder With Domed Ends setting is applicable when volume measurements are needed from a horizontally-oriented cylindrical tank with a constant diameter (see Figure 4-5 for a cross-sectional view).

The volume is calculated from the live level measurement, the full volume of an ideal cylindrical tank, and the diameter of that tank.

Setting-up Procedure for “Horizontal Cyl Dome”:

1. Use the Tank Shape/NLP (P011) parameter to select the option “Horizontal Cyl Dome”.

2. Enter the full volume into the PV Scale Factor parameter (page 52).

3. Enter the tank diameter into the Profile Height / Power Factor parameter (page 53).

Section 4: Configuration

December 2014

4.3.13 Flow measurement

Table 4-1 on page 50 lists the Tank Shape/Non-Linear Profile (P011) options that select a

standard flow structure profile and the conversion (scale) factors used to calculate a flow process value (PV).

Tank Shape/NLP (P011) = “Special Plot”

The “Special Plot” option is used for irregular-shaped flow profiles. See page 43 for a full description.

Tank Shape/NLP (P011) = “Flume/Weir-3/2”

This setting is applicable when flow rate measurements are needed from an open channel with a flume or weir profile (see Figure 4-6 on page 49).

The rate of flow per second is calculated by:

Reference Manual

00809-0200-4840, Rev BA

Q = k x h

Where ‘h’ is the live liquid level, ‘Q’ is flow rate per second, ‘Pwr’ is the power factor and ‘k’ is a user-entered scale factor.

The transmitter automatically populates parameter Power Factor / Profile Height (page 53) with a power factor from Tab l e 4- 1 .

Flumes that deviate from the standard “3/2 power law”, e.g. round-bottomed flumes, must use the “Special Plot” profile option that is based on flow versus height tabulations (see page 43).

Setting-up Procedure for “Flume/Weir-3/2”:

1. Use parameter Tank Shape/NLP (P011) to select “Flume/Weir-3/2”.

2. Enter the scale factor into the PV Scale Factor parameter (page 52).

Pwr

Tank Shape/NLP (P011) = “V-Notch-5/2”

This setting is applicable when flow measurements are needed from an open channel with a V-notch profile.

The rate of flow through a V-notch is calculated using:

Q = k x h

Pwr

Where ‘h’ is the live liquid level, ‘Q’ is flow rate per second, ‘Pwr’ is the power factor, and ‘k’ is a user-entered scale factor.

The transmitter automatically populates parameter Power Factor / Profile Height (page 53) with a power factor from Tab l e 4- 1 .

Setting-up Procedure for “V-Notch-5/2”:

1. Edit parameter Tank Shape/NLP (P011) to select “V-Notch-5/2”.

2. Enter the scale factor into the PV Scale Factor parameter (page 52).

Section 4: Configuration

Reference Manual

4–20mA/HART

Rosemount

3107 or 3108

Rosemount

3490 Series

Side

View

End View Downstream

4–20mA/HART

Rosemount

3107 or 3108

Rosemount 3490 Series

End View Downstream

00809-0200-4840, Rev BA

Figure 4-6. Rectangular weir cross-section

Section 4: Configuration

December 2014

Figure 4-7. V-notch cross-section

Section 4: Configuration

December 2014

Reference Manual

00809-0200-4840, Rev BA

Table 4-1. Standard Flow Profile Options

Hmax Scale Factor

Ta nk S h a p e/ N L P

(P011) Options

Flow Structures

Metric

(m)

Imperial

(ft/in.)

Metric

/hour)

Imperial

(GPM

Flume/Weir-3/2 Flume 3/2 flow law - - (User) (User) 1.5 (User) (User) V-Notch-5/2 V-Notch 5/2 flow law - - (User) (User) 2.5 (User) (User) mann Manning formula - - (User) (User) (User) (User) (User) PAr 01 1 in. Parshall flume 0.75 2.5 217.3 151.7 1.55 17.9 87.3 PAr 02 2 in. Parshall flume 0.75 2.5 434.6 303.4 1.55 50.7 215 PAr 03 3 in. Parshall flume 0.75 2.5 635.5 445.2 1.547 125 516 PAr 06 6 in. Parshall flume 0.75 2.5 1372 924.5 1.58 389 1750 PAr 09 9 in. Parshall flume 0.75 2.5 1927 1378 1.53 882 3980 PAr 1 1 ft Parshall flume 0.75 2.5 2487 1795 1.522 1610 7240 PAr 1.5 11/2 ft Parshall flume 0.75 2.5 3803 2693 1.538 2440 11000 PAr 2 2 ft Parshall flume 0.75 2.5 5143 3590 1.550 3290 14900 PAr 3 3 ft Parshall flume 0.75 2.5 7863 5386 1.566 5010 22600 PAr 4 4 ft Parshall flume 0.75 2.5 10630 7181 1.578 6750 30500 PAr 5 5 ft Parshall flume 0.75 2.5 13440 8976 1.587 8510 38400 PAr 6 6 ft Parshall flume 0.75 2.5 16280 10770 1.595 10300 46400 PAr 8 8 ft Parshall flume 0.75 2.5 22010 14360 1.607 13900 62600 PAr 10 10 ft Parshall flume 0.75 2.5 26862 17672 1.6 20700 89200

(3)

FF01

(3)

FF02

(3)

FF03

(3)

FF04

(3)

FF05

(3)

FF06

(3)

FF07

(3)

FF08

(3)

FF09

(3)

FF10

(3)

FF11

(3)

FF12

(3)

FF13

(3)

FF14

(3)

FF15

(3)

FF16

(3)

FF17

(3)

FF18

(3)

FF19

(3)

FF20

(3)

FF21

(3)

FF22

(3)

FF2 3

(3)

FP01

(3)

FP02

(3)

FP03

(3)

FP04

(3)

FP05

(3)

FP06

(3)

FP07

(1) Upper range value if set to AUTO. Lower range value (4 mA) is set to 0. (2) The gal lons are US gallons. (3) Flume option not available if base units are imperial.

Flume Flat 1 (m) 0.102 - 134.7877 - 1.5 9 Flume Flat 2 (m) 0.191 - 178.2664 - 1.5 36 Flume Flat 3 (m) 0.267 - 313.4177 - 1.5 90 Flume Flat 4 (m) 0.406 - 541.7157 - 1.5 360 Flume Flat 5 (m) 0.635 - 811.1058 - 1.5 900 Flume Flat I 0.200 - 132.2 - 1.5 30 Flume Flat II 0.250 - 177.7 - 1.5 60 Flume Flat III 0.300 - 217.58 - 1.5 90 Flume Flat III bis 0.3333 - 328.35 - 1.5 200 Flume Flat III ter 0.400 - 272.0 - 1.5 200 Flume Flat IV 0.400 - 352.1726 - 1.5 180 Flume Flat V 0.500 - 442.932 - 1.5 360 Flume Flat V bis 0.400 - 400.5 - 1.5 320 Flume Flat VI 0.540 - 499.0569 - 1.5 720 Flume Flat VII 0.700 - 623.7 - 1.5 1080 Flume Flat VIII 0.600 - 881.16 - 1.5 1440 Flume Flat VIII bis 0.666 - 798.0 - 1.5 1500 Flume Flat IX 0.800 - 1065.186 - 1.5 1800 Flume Flat IX bis 0.733 - 814.8 - 1.5 1700 Flume Flat X 0.867 - 1322.2761 - 1.5 3600 Flume Flat X bis 1.200 - 1609.0 - 1.5 7500 Flume Flat X ter 0.959 - 1064.884 - 1.5 3500 Flume Flat XI 1.200 - 1650.99 - 1.5 7200 Flume Parabolic 1 0.200 - 15878.5 - 2.3 20 Flume Parabolic 2 0.250 - 17591.1 - 2.3 40 Flume Parabolic 3 0.310 - 11645.6 - 2.2 90 Flume Parabolic 4 0.380 - 13669.5 - 2.2 180 Flume Parabolic 5 0.460 - 9802.7 - 2.1 360 Flume Parabolic 6 0.600 - 11367.8 - 2.1 720 Flume Parabolic 7 0.800 - 12227.7 - 2.1 1400 -

(2)

)

Power Fac tor

20 mA Point

Metric

(m)

Imperial

(ft/in.)

(1)

Section 4: Configuration

Reference Manual

(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4.3.14 Primary variable units (P012)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 3, 1

This selects alternative display units for the HART Primary Variable (PV), which are then reported to a HART Master Device such as a Rosemount 3490 Series Control Unit.

Note

 Selecting alternative display units does not automatically re-scale the PV value.

Use the parameter PV Scale Factor to manually re-scale the value.

Field Communicator or AMS

To view or change the displayed units for the PV:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 3: Profiling.

4. Select 1: Primary Variable Units P012.

5. Select new units, and then press “ENTER” to save the selection.

6. Press “SEND” to update the transmitter.

Primary Variable Units P012

ft Cum Cum/h Cum/s ft

gal/min Impgal Impgal/d

ESC

ENTER

Note

 If the HART PV has no units, select and confirm the “None”, “Unknown”, or

“Not Used” option as appropriate for the HART Master Device (host).

Rosemount 3490 Series Control Unit

To view or change the displayed units for the PV:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select UNITS.

4. Select PV Units.

5. Follow the on-screen instructions to select and confirm the new setting. If the HART PV has no units, select and confirm the “None” option.

(Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

PV Units P012 ft Esc=Quit =Edit

Section 4: Configuration

Scale Factor P013 1

ESC

DEL ENTER

HELP

wsq

Lock

Shift

@ &

á ü

iko

(Field Communicator Screen)

December 2014

4.3.15 Scale factor / K-factor (P013)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 3, 4

Level measurement

When the process value (PV) is a level measurement in meters, feet, or inches, this parameter converts (scales) the level measurement into alternative units before being output. Enter a value of 1.0 if alternative units are not required.

Volume measurement

When the PV is a volume measurement from a standard non-linear-shaped tank e.g. cylinder or sphere, use this parameter to enter the volume of the ideal shaped tank (Figure 4-5 on page 47).

When the PV is a volume measurement from a regular-shaped tank e.g. square or rectangular, use this parameter to enter the volume change per unit of the base unit.

When the PV is a volume measurement from an irregular-shaped tank, use this parameter to enter the maximum volume. See also the Special Plot section on page 43 for defining the irregu- lar-shaped tank.

Open channel measurement

When the PV is the flow rate in a standard open channel, use this parameter to enter the scale factor (‘k’ term) in a flow rate calculation. See “Flow measurement” on page 48 for selecting a standard flow profile.

When the PV is the flow rate in an irregular-shaped open channel, use this parameter to enter the maximum flow rate. See also the Special Plot section on page 48 for defining the irregu- lar-shaped channel.

Field Communicator or AMS

To view or change the scale factor / k-factor:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 3: Profiling.

4. Select 4: Scale Factor P013 or 4: k-factor P013, depending on the Non-Linear Profile selected (see page 38).

5. Input the new factor, and press “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Section 4: Configuration

Reference Manual

(Rosemount 3491 Screen Shown)

00809-0200-4840, Rev BA

Rosemount 3490 Series Control Unit

To view or change the scale factor / k-factor:

Section 4: Configuration

December 2014

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY.

4. Select PV Scale Factor.

5. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

4.3.16 Profile height / Power factor (P014)

Fast Keys

Level measurement

This is not used for level measurements. It does not appear on the Field Communicator unless required for volume or flow measurements.

Volume measurement

2, 2, 3, 5

PV Scale Factr P013

1.000 Esc=Quit =Edit

When the process value (PV) is a volume measurement from a standard non-linear-shaped tank e.g. an ideal horizontal cylinder or a sphere, use this parameter to enter the diameter (see Figure 4-5 on page 47).

When the PV is a volume measurement from a regular-shaped tank e.g. square or rectangular, this parameter is not used.

When the PV is a volume measurement from an irregular-shaped tank, use this parameter to enter the maximum height (see page 43). See also the Special Plot section on page 43 for defining the irregular-shaped tank.

Open channel measurement

When the process value (PV) is a flow rate in a standard open channel, this parameter is used as the power factor (‘pwr’ term) in a flow rate calculation (see “Flow measurement” on page 48).

When the PV is the flow rate in an irregular-shaped open channel, use this parameter to enter the maximum height (see page 43). See also the Special Plot section on page 48 for defining the irregular-shaped channel.

Section 4: Configuration

Non-Linear Profile Height P014 1 ft

ESC

DEL ENTER

HELP

wsq

Lock

Shift

@ &

á ü

iko

(Field Communicator Screen Shown)

(Rosemount 3491 Screen)

December 2014

Field Communicator or AMS

To view or change the diameter, maximum height, or power factor:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 3: Profiling.

4. Select 5: Non-Linear Profile Height P014 or 5:Power Factor P014,

5. Input a new value, and press “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Rosemount 3490 Series Control Unit

To view or change the diameter, maximum height, or power factor:

Reference Manual

00809-0200-4840, Rev BA

depending on the Non-Linear Profile selected (see page 38).

Profile Height P014

1.0000ft Esc=Quit =Edit

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY.

4. Select Profile Height.

5. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

Section 4: Configuration

Reference Manual

Profile Point1 P030

10.000%

ESC

DEL ENTER

HELP

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(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4.3.17 Profile points 1 to 10 (P030 to P039)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 3, 6

These parameters are used to define an irregular-shaped profile for calculating the process value (PV) from a live level reading.

Note

 See page 43 for examples of how these parameters are used.

Field Communicator or AMS

To view or change the profile point:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 3: Profiling.

4. Select 6: Plot Non-Linear Profile Points.

5. Select a profile point e.g. 1: Profile Point1 P030.

6. Input a new value, and then select “ENTER” to save it.

7. Press “SEND” to update the transmitter.

Note

 The profile point parameters are only accessible on a Field Communicator if they are

required for a selected Non-linear Profile (see page 38). The points can be changed only if the “Special Plotted” profile has been selected.

Rosemount 3490 Series Control Unit

To view or change the profile point:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DUTY.

4. Select NLP CURVE.

5. Select a profile point e.g. “Profile Pt. 1”.

6. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

Profile Pt. 1

10.000% Esc=Quit =Edit

Section 4: Configuration

Upper Range Value P015

10.0 ft

10.0

ESC

DEL ENTER

HELP

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(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

4.3.18 Upper range value (P015)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 1, 3

This defines the process value (PV) represented by a 20 mA output from the transmitter.

The span of the 4–20 mA current output is defined by the Upper Range Value parameter and the Lower Range Value parameter (page 57).

As an example, consider a tank with a 120 gallons capacity. When full, a 20 mA output current is required from the transmitter. Therefore, the upper range value is set to 120 if the PV is in gallon units. The lower range value is typically set to 0 (gallons) for the 4 mA output to indicate an empty tank.

The upper range value can be less than the lower range value, in which case the current output will decrease for an increasing process value (PV).

Note

 The upper range value is automatically overwritten when the Tank Shape/NLP

parameter is used to select a flume flow profile, but the populated value can still be edited if required. See Table 4-1 on page 50 for the 20 mA point values.

 The displayed units are selected using the parameter Primary Variable Units

(see page 51). Changing units does not re-scale the upper range value.

Field Communicator or AMS

To view or change the upper range value:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 1: Basic Setup.

4. Select 3: Upper Range Value P015.

5. Input a new value, and then select “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To view or change the upper range value:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

Up Range Val P015

10.000ft Esc=Quit =Edit

3. Select OUTPUT.

Section 4: Configuration

Reference Manual

Lower Range Value P016 0 ft

ESC

DEL ENTER

HELP

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(Field Communicator Screen)

00809-0200-4840, Rev BA

4. Select CURRENT.

5. Select Up Range Val.

6. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

4.3.19 Lower Range Value (P016)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 1, 4

This defines the process value (PV) represented by a 4 mA output from the transmitter.

The span of the 4–20 mA current output is defined by the Upper Range Value parameter (page 56) and the Lower Range Value parameter.

As an example, consider a tank with a 120 gallons capacity. When empty, a 4 mA output current is required from the transmitter. Therefore, the lower range value is set to 0. The upper range value is typically set to 120 (gallons) for the 20 mA output current to indicate an full tank.

The lower range value can be greater than the upper range value, in which case the current output will decrease for an increasing process value (PV).

Note

 The displayed units are selected using the parameter Primary Variable Units

(see page 51). Changing units does not re-scale the lower range value.

Field Communicator or AMS

To view or change the lower range value:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

Section 4: Configuration

3. Select 1: Basic Setup.

4. Select 4: Lower Range Value P016.

5. Input a new value, and then select “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Section 4: Configuration

Low Range Val P016

0.000ft Esc=Quit =Edit

(Rosemount 3491 Screen)

(Field Communicator Screen)

December 2014

Rosemount 3490 Series Control Unit

To view or change the lower range value:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select OUTPUT.

4. Select CURRENT.

5. Select Low Range Val.

6. Follow the on-screen instructions to input and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

4.3.20 Damping (P020)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 1, 5

The damping value is a time constant in seconds, and is applied as smoothing to the level reading and the output current.

A larger value will have the effect of smoothing out rapid changes of level, and smooth out the effects of turbulence and ripples on the liquid surface.

A value of zero can be edited, in which case no smoothing is applied and transmitter readings immediately change the output.

Note

 The pulse repetition frequency of the transmitter is one pulse per second, which means

that the system response time cannot be faster than this.

Field Communicator or AMS

To view or change the damping:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

Damping P020

3.0 s

3.0

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3. Select 1: Basic Setup.

4. Select 5: Damping P020.

5. Input a new value, and then select “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Section 4: Configuration

Reference Manual

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

Rosemount 3490 Series Control Unit

To view or change the damping:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select OUTPUT.

4. Select CURRENT.

5. Select Damping.

6. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

4.3.21 Lost echo delay (P021)

Section 4: Configuration

December 2014

Damping P020

3.0sec Esc=Quit =Edit

Fast Keys

2, 2, 5, 1

In pulse echo level measurement systems, ultrasonic pulse echoes are sometimes lost due to adverse liquid surface conditions such as turbulence or foam. The ultrasonic pulse transmitted towards the surface is sometimes not returned, deflected away from the transmitter, or attenuated significantly. In these conditions, the transmitter holds the last valid data and transmits another pulse to see if the echo is returned.

Lost Echo Delay (P021) defines the period that the transmitter will hold and display the present valid surface measurement, waiting to update the measurement when the echo is recovered.

A “lost echo” fault condition is signalled if the Lost Echo Delay period ends with no valid echoes returned.

A valid returned echo occurs inside a 'window' on either side of the liquid level. The 'window' increases as the range to the target increases. All echoes within the ‘window’ are monitored and averaged to smooth of the liquid level output under turbulent conditions.

Any returned echo from closer than the liquid surface is considered valid if a minimum required number of echoes (page 67) have been received. The output will then change to this new value.

Any echo returned further than the liquid surface and outside the 'window' is ignored. However, if a lost echo condition is developing and a period

(1)

(Lost Echo Delay divided by two

) has elapsed, any echoes received from further away targets are treated as valid. The liquid level measured changes to the new value after receiving four such echoes.

(1) Maximum of 20 seconds.

Section 4: Configuration

Lost Echo Delay P021 900 s

900

ESC

DEL ENTER

HELP

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(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

Field Communicator or AMS

To view or change the lost echo delay:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup, and then select 5:

3. Select 1: Lost Echo Delay P021.

4. Input a new value, and then select “ENTER” to save it.

5. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

Reference Manual

00809-0200-4840, Rev BA

Engineering.

To view or change the lost echo delay:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING., and then select LE Delay.

4. Follow the on-screen instructions to edit and save the new setting.

(Press the Enter ( ) key if prompted to change the mode to “off-line”).

5. Select “Quit” to exit to the previous menu.

4.3.22 Lost echo action (P022)

Fast Keys

This defines what happens to the process value (PV) and output current when a “lost echo” condition exists (see page 59).

“MINIMUM” action

The PV is forced to zero while a “lost echo” condition exists.

In addition, the two-wire loop current changes to indicate a low or high alarm as specified by the model code (see “Special Alarm Options” on page 118). The current remains at that level until the correct target echo is recovered.

2, 2, 5, 2

LE Delay P021 900sec Esc=Quit =Edit

“MAXIMUM” action

The PV is forced to the maximum while a “lost echo” condition exists. The maximum PV is the value that occurs when an echo is received from the transmitter face.

Section 4: Configuration

Reference Manual

(Field Communicator Screen)

LE Action P022 Hold Esc=Quit =Edit

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

“HOLD” action

The current output is held at the last good PV value.

Section 4: Configuration

December 2014

Field Communicator or AMS

To view or change the lost echo action:

Lost Echo Action P022

Hold Minimum Hold

Hold

Maximum

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 5: Engineering.

4. Select 2: Lost Echo Action P022.

5. Select a new action, and then press “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To view or change the lost echo action:

1. From the Main Menu screen, select SETUP.

ESC

ENTER

Section 4: Configuration

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select LE Action.

5. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. Select “Quit” to exit to the previous menu.

Section 4: Configuration

December 2014

4.3.23 Speed of sound (P024)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 5, 4

This is for entering the speed of sound of the gas above the liquid surface (ullage gas) in a closed tank at 32 F (0 C). Tab l e 4 -2 shows Speed of Sound values for ullage gases at 32 F (0 C).

A new speed of sound is then calculated for the ullage gas at the temperature and humidity level in the tank (see calculated Speed of Sound on page 94). The correction for temperature effects is made using the parameter Temperature (page 63) and assumes the entered Speed of Sound (P024) value is valid at 32 F (0 C).

For systems monitoring aqueous liquids with air (or nitrogen) as the primary gas in the ullage space, the entered Speed of Sound (P024) value should be 1088.6 ft/s (331.80 m/s). This is the most accurate setting for temperatures in the range of 32 to 104 F (0 to 40 C). It takes into account the typical variations in humidity and assumes the temperature compensation is based on the temperature sensor measurement.

If the tank vapor space is filled with a different gas, a revised Speed of Sound (P024) value should be entered. Gas mixtures have speed of sound values calculated as an average according to the proportion of the gases present.

Note

 The speed of sound is inversely proportional to the molecular weight of the gas

molecules. Certain triatomic gases attenuate ultrasound significantly, because of molecular resonance. Examples are carbon dioxide, oxides of nitrogen and sulphur and chlorine. Ultrasonics should not be used where carbon dioxide or chlorine is present in the ullage space and only after careful consideration in the case of oxides of nitrogen and sulphur. Operational performance of ultrasonic pulse echo systems is significantly reduced when such gases exceed small percentages in the Ullage space (e.g. 5%).

Table 4-2. Speed of sound of ullage gases

Speed of Sound

Ullage Gas

Acetaldehyde 800.53 (244) Ethylether 675.85 (206) Ammonia 1361.55 (415) Methane 1410.76 (430) Argon 1010.50 (308) Methanol 1099.08 (335) Benzene 580.71 (177) Nitrogen 1105.64 (337) Carbon Dioxide 849.74 (259) Nitric oxide 1095.80 (334) Carbon Tetrachloride 475.72 (145) Oxygen 1089.24 (332) Cycl oh exa ne 593.83 (181) Propane 780.84 (238) Ethane 1036.35 (316) Sulphur hexafluoride 436.35 (133) Ethylalcohol 846.46 (258)

ft/s (m/s)

Ullage Gas

Speed of Sound

ft/s (m/s)

Section 4: Configuration

Reference Manual

Speed of Sound P024

1088.60 ft/s

1088.60

ESC

DEL ENTER

HELP

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(Field Communicator Screen)

Speed of Sound P024

1088.6ft/s Esc=Quit =Edit

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

Field Communicator or AMS

To view or change the speed of sound setting:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 5: Engineering.

4. Select 4: Speed of Sound P024.

5. Input a new value, and then select “ENTER” to save it.

6. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

Section 4: Configuration

December 2014

To view or change the speed of sound setting:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING, and then select Speed of Sound.

4. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

5. Select “Quit” to exit to the previous menu.

4.3.24 Temperature (P025)

Fast Keys

This is for temperature-correcting the speed of sound base value in parameter Speed of Sound (page 62).

For automatic (dynamic) corrections using the temperature sensor, select the “Auto” option. The live temperature measurement is indicated in the read-only parameter Temperature SoS Calculation (page 94). If the sensor fails and “Auto” is selected, the setting reverts to 68 F (20 C).

2, 2, 9, 1, 5

Section 4: Configuration

Note

 The integral temperature sensor on the 3107 measures the air temperature at the

transmitter, and not the average temperature across the ullage space. If the average temperature is known, enter this into Temperature (P025). The same value is then indicated by the read-only parameter Temperature For SoS Calculation (page 94) and is used to correct the speed of sound.

Section 4: Configuration

Set Temperature (NaN degF)

NaN

ESC

DEL ENTER

HELP

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(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

Field Communicator or AMS

To view or change the temperature setting:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 8: Set Temperature.

4. Select 1: Temperature.

5. Select 4: Set Temperature.

6. Select 1: Set to Automatic (NaN) for automatic (dynamic) corrections.

7. Alternatively, select 2: Edit to fix temperature, input a temperature, and then save it

Note

 When messages appear, take appropriate action if needed and press “OK”.

 The Fast Key sequence 2, 2, 8, 1 indicates if the internal temperature sensor or the remote

Reference Manual

00809-0200-4840, Rev BA

by pressing “ENTER”.

temperature sensor is in use (OFF/ON), and if the temperature is fixed (OFF/ON).

Rosemount 3490 Series Control Unit

To view or change the temperature setting:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING., and then select Temperature.

4. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

5. Select “Quit” to exit to the previous menu.

4.3.25 Set threshold (P026)

Fast Keys

This sets the sensitivity of the echo detection circuits in the transmitter. The threshold is a percentage defining the minimum signal level, above which an echo is detected and treated as a potentially valid surface or target.

When the threshold is set to “Auto”, the sensitivity is automatically adjusted over a range of values, depending on the echo strengths being received. The threshold is adjusted to one quarter of the peak value of the largest signal detected to give best overall performance. The live value is indicated in the read-only Threshold In Use parameter (page 97).

2, 2, 8, 2, 2

Temperature P025 Auto F Esc=Quit =Edit

The threshold can be a constant value, which may be needed to overcome on-site difficulties or special conditions.

Section 4: Configuration

Reference Manual

(Field Communicator Screen)

Set Threshold P026 Auto % Esc=Quit =Edit

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

Note

 The threshold value can be adjusted in conjunction with parameters

Section 4: Configuration

December 2014

Upper Blanking (page 38), Lower Blanking (page 39), Threshold 1 Time (page 68), and Threshold 1 Size (page 69)

Field Communicator or AMS

To view or change the threshold setting:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

Set Threshold (NaN %)

NaN

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3. Select 7: Advanced Processing.

4. Select 2: Threshold.

5. Select 2: Set Threshold.

6. Select 1: Set to Automatic (NaN) for automatic (dynamic) adjustments.

7. Alternatively, select 2: Edit to fix threshold, input a threshold percentage, and then save it by pressing “ENTER”.

Note

 When messages appear, take appropriate action if needed and press “OK”.

 Fast Key sequence 2, 2, 8 indicates the status Threshold Is Fixed (OFF/ON) and the

status Threshold Is Not Optimum (OFF/ON).

Rosemount 3490 Series Control Unit

Section 4: Configuration

To view or change the threshold setting:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING, and then select Set Threshold.

4. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

5. Select “Quit” to exit to the previous menu.

Section 4: Configuration

(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

4.3.26 Transmit power control (P040)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 7, 4, 1

The transmitted ultrasonic energy can be controlled automatically to avoid strong close echoes saturating the electronics of the transmitter. The live level is indicated in the read-only Tr an smi t

Power parameter (page 99).

Field Communicator or AMS

To enable or disable Transmit Power Control:

Power Control P040 Enable Disable Enable

Enable

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

ESC

ENTER

3. Select 7: Advanced Processing.

4. Select 4: Set Power Control.

5. Select 1: Power Control P040.

6. Select “Disable” or “Enable”, and then press “ENTER” to confirm it.

7. Press “SEND” to update the transmitter.

Note

 Fast Key sequence 2, 2, 7, 4 indicates the status Power Control Is Active (OFF/ON) and the

live Transmit Power level.

Rosemount 3490 Series Control Unit

To enable or disable Transmit Power Control:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select ADVANCED.

5. Select Tx Pwr Control.

6. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

Tx Pwr Control P040 Enable Esc=Quit =Edit

Section 4: Configuration

Reference Manual

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4.3.27 Pulse repeat (P041)

Section 4: Configuration

December 2014

Fast Keys

The nominal rate of repetition for ultrasonic pulses from the transmitter is one pulse per second. If two transmitters were located within the same tank, it is possible this would allow ultrasonic pulses from one unit to be received by the other. If pulses were consistently occurring at the same time, the receiving transmitter could mistakenly identify this crosstalk as a valid surface echo. This can be prevented by having both transmitters operate with different rates of pulse repetition, which means this interference is rejected as not consistent (pulse-to-pulse).

Pulse Repeat (P041) allows the pulse repetition interval to be adjusted by increments of 0.1 seconds in the range 0.5 to 2.0 seconds, allowing sufficient separation to avoid crosstalk problems.

–

Field Communicator or AMS

This parameter is not available in the 3100 Series DD (Device Descriptor) file.

Rosemount 3490 Series Control Unit

To view or change the pulse rate:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

Pulse Repeat P041 Standard(1.0s) Esc=Quit =Edit

3. Select ENGINEERING.

4. Select ADVANCED.

5. Select Pulse Repeat.

6. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

4.3.28 Echoes needed (P042)

Fast Keys

Echoes Needed is used to avoid stirrers that give occasional high level signals when they

protrude from the liquid surface.

The transmitter monitors the echoes returned from the liquid surface or any other target within range. A valid surface echo is one that exceeds the signal strength threshold consistently for more ultrasonic pulse cycles than set by Echoes Needed (P042).

The default value for Echoes Needed is four, meaning four echoes must be received consecutively from a new surface echo before this is taken as the actual liquid level.

–

Section 4: Configuration

(Rosemount 3491 Screen)

(Field Communicator Screen)

December 2014

Field Communicator or AMS

This parameter is not available in the 3100 Series DD (Device Descriptor) file.

Rosemount 3490 Series Control Unit

To view or change the number of echoes needed:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select ADVANCED.

5. Select Echoes Needed.

6. Follow the on-screen instructions to edit and save the new setting.

Reference Manual

00809-0200-4840, Rev BA

Echoes Needed P042 4 Esc=Quit =Edit

(Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

4.3.29 Threshold 1 time (P043)

Fast Keys

False echoes may occur close to the transmitter face. If they occur outside the Upper Blanking distance (page 62), the false echo can be ignored by entering the echo size as a percentage and a duration (representing distance) for how long this echo size should be ignored.

Enter the duration (representing distance) into the parameter Threshold 1 Time (P043). For example, 6 ms represents an approximate distance of 1 m, and 2 ms represents a distance of approximately 1 ft.

See “Threshold 1 size (P048)” on page 69 for entering the echo size.

Field Communicator or AMS

To view or change the threshold time:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 7: Advanced Processing.

2, 2, 7, 2, 6

Threshold 1 Time P043

2.9 ms

2.9

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4. Select 2: Threshold.

5. Select 6: Threshold 1 Time P043.

6. Input a new value, and then select “ENTER” to save it.

7. Press “SEND” to update the transmitter.

Section 4: Configuration

Reference Manual

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

Rosemount 3490 Series Control Unit

To view or change the threshold time:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select ADVANCED.

5. Select Thresh 1 Time.

6. Follow the on-screen instructions to edit and save a new setting.

7. Select “Quit” to exit to the previous menu.

4.3.30 Threshold 1 size (P048)

Section 4: Configuration

December 2014

Thresh 1 Time P043

2.9ms Esc=Quit =Edit

Fast Keys

2, 2, 7, 2, 7

See “Threshold 1 time (P043)” on page 68 for entering the duration (representing distance).

Note

 In applications where elevated ambient temperatures of around 50 to 60 °C are

The factory default value of parameter P048 is 4%.

If the false echo is reported at the end of the Upper Blanking Distance (0.3 m or as adjusted in P023 (page 38), then it is recommended to set the value of Threshold 1 Size parameter P048 to a value sufficient to ignore this false echo.

This should be implemented by reading the size of the false echo (using parameter Echo Size, page 91), and setting the P048 to a value 4% greater than the reported value in the parameter Echo Size (page 91).

Note that this particular approach has an impact on the liquid level reading accuracy when the liquid level is within approximately 0.5 m of the transducer face. The accuracy may be reduced from ±2.5 to +2.5/-5.5 mm or, in extreme conditions, +2.5/-8.5 mm.

Section 4: Configuration

 Use the read-only parameter Echo Size (page 91) as a reference for the false echo size.

Section 4: Configuration

Threshold 1 Size P048

4.0 %

4.0

ESC

DEL ENTER

HELP

wsq

Lock

Shift

@ &

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iko

(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

Field Communicator or AMS

To view or change the threshold size:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 7: Advanced Processing.

4. Select 2: Threshold.

5. Select 7: Threshold 1 Size P048.

6. Input a new value, and then select “ENTER” to save it.

7. Press “SEND” to update the transmitter.

Rosemount 3490 Series Control Unit

To view or change the threshold size:

1. From the Main Menu screen, select SETUP.

Reference Manual

00809-0200-4840, Rev BA

Thresh 1 Size P048

4.0% Esc=Quit =Edit

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select ADVANCED.

5. Select Thresh 1 Size.

6. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

Section 4: Configuration

Reference Manual

Target Pulses P044 AUTOMATIC 27 28 29 30 31 32 AUTOMATIC

AUTOMATIC

ENTER

ESC

(Field Communicator Screen)

Target Pulses P043 Automatic Esc=Quit =Edit

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4.3.31 Target pulses (P044)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 7, 5, 1

Tar get Pulses (P044) is the number of ultrasonic pulses in each burst sent from the transmitter every second.

The factory default “Automatic” setting allows the transmitter to decide the number of pulses. Alternatively, select a number in the range 4 to 32.

Note

 See Pulses in Use (page 98) for the actual number of pulses used.

Field Communicator or AMS

To view or change the number of pulses in a burst:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 7: Advanced Processing.

4. Select 5: Set Target Pulses.

5. Select 1: Target Pulses P044.

6. Select a new setting, and then select “ENTER” to save it.

7. Press “SEND” to update the transmitter.

Rosemount 3490 Series Control Unit

To view or change the number of pulses in a burst:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select ADVANCED.

5. Select Target Pulses.

6. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

Section 4: Configuration

(Field Communicator Screen)

Target Freq P045 Auto kHz Esc=Quit =Edit

(Rosemount 3491 Screen)

December 2014

4.3.32 Target frequency (P045)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 7, 6, 1

This sets the frequency used for transmitting an ultrasonic pulse. The optimum frequency depends on the characteristics of the transmitter’s piezoelectric crystals, which are affected by temperature.

The transmitter has a look-up table to select a frequency value to give the highest echo strength from the prevailing conditions at the site. This look-up function operates when Target Frequency (P045) is set to “Auto”.

Site conditions sometimes require a fixed frequency. Target Frequency (P045) is used to set a fixed frequency, but the actual frequency value used is selected from the look-up table and the nearest to that entered value is selected automatically.

Note

 See also Frequency (page 96) for the actual frequency used.

Field Communicator or AMS

To view or change the target frequency:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

Target Frequency P045

AUTOMATIC 50 kHz 51 kHz 53 kHz 54 kHz 56 kHz 58 kHz AUTOMATIC

AUTOMATIC

ESC

ENTER

3. Select 7: Advanced Processing.

4. Select 6: Set Frequency.

5. Select 1: Target Frequency P045.

6. Select a new setting, and then select “ENTER” to save it.

7. Press “SEND” to update the transmitter.

Rosemount 3490 Series Control Unit

To view or change the target frequency:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select ADVANCED.

5. Select Target Freq.

6. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

Section 4: Configuration

Reference Manual

(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4.3.33 Spike rejection (P049)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 7, 3, 1

This sets the minimum duration of a valid echo signal, and is used to reject transient electrical interference (spike) signals.

Note

 Spike rejection is switched-off when it is set to 0.

Field Communicator or AMS

To view or change the spike rejection:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

Poll Address D951 0

wsq

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Shift

HELP

DEL ENTER

iko

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ESC

3. Select 7: Advanced Processing.

4. Select 3: Set Spike Reject.

5. Select 1: Spike Reject P049.

6. Input a new setting, and then select “ENTER” to save it.

7. Press “SEND” to update the transmitter.

Rosemount 3490 Series Control Unit

To view or change the spike rejection:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING.

4. Select ADVANCED.

5. Select Spike Reject.

6. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

7. Select “Quit” to exit to the previous menu.

Spike Reject P049 0 Esc=Quit =Edit

Section 4: Configuration

First Size P082 0 %

ESC

DEL ENTER

HELP

wsq

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Shift

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(Field Communicator Screens)

False Echo S1 P082 20% Esc=Quit =Edit

(Rosemount 3491 Screens)

December 2014

4.3.34 False echo data (P081 to P088)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 6, 8

These parameters are the four false echo data records, each storing a false echo as distance-to-surface (e.g. 1.7 m) and echo size (e.g. 44%). The transmitter ignores these false target echoes.

4.3.35 Clear false echoes (P089)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 6, 5

This is used to clear a specified False Echo Data record, or clear all of the False Echo Data records. Options are:

 “False Echo 1”

 “False Echo 2”

 “False Echo 3”

 “False Echo 4”

 “All”

Field Communicator or AMS

To clear false echo data:

1. From the Home screen, select 2: Configure.

Select false echo to clear

False Echo 1 False Echo 2 False Echo 3 False Echo 4

All

2. Select 2: Manual Setup.

3. Select 6: False Echoes.

4. Select 5: Clear False Echoes.

5. Select “All” or a numbered false echo record, and then press “ENTER” to confirm the selection.

ESC

ENTER

6. Press “SEND” to update the transmitter.

Note

 When messages appear, take appropriate action if needed and press “OK”.

Rosemount 3490 Series Control Unit

To clear false echo data:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select ENGINEERING, and then select FALSE ECHO ACTION.

4. Select Clear False Echoes.

5. Select “Edit” ( ), then select an option using the up-arrow or down-arrow keys, and finally select “Save” ( ) to confirm the selection.

(Press the Enter ( ) key if prompted to change the mode to “off-line”).

6. When finished, select “Quit” to exit to the previous menu.

Section 4: Configuration

(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

4.3.36 Transducer material (P970)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

1, 3, 1, 2, 1

This read-only parameter indicates the transmitter’s construction material.

Field Communicator or AMS

Transducer Material P970 PVC

To view the transmitter material description:

1. From the Home screen, select 1: Overview.

2. Select 3: Shortcuts.

3. Select 1: Device Information.

4. Select 2: Materials of Construction.

5. Select 1: Transducer Material P970.

6. When finished, press EXIT to exit to the previous menu.

Rosemount 3490 Series Control Unit

To clear false e cho data:

1. From the Main Menu screen, select SETUP.

Tx Material P970 PVC

EXIT

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select SYSTEM, and then select FIXED.

4. Select Tx Material.

5. When finished, select “Quit” to exit to the previous menu.

Section 4: Configuration

Reference Manual

(Field Communicator Screen)

Poll Address P951 0 Esc=Quit =Edit

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

4.3.37 Poll address (D951)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 4, 2, 1

This indicates the transmitter polling address for the HART protocol.

The poll address range is 0 to 15. When it is 0, the transmitter is in 4–20 mA mode. For all other addresses, the transmitter is in multi-drop mode and the current output is fixed to 4 mA.

Field Communicator or AMS

To view or change the poll address:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

Poll Address D951 0

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HELP

DEL ENTER

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3. Select 4: HART/Identity.

4. Select 2: Communication.

5. Select 1: Poll Address D951.

6. Input a new setting, and then select “ENTER” to save it.

7. Press “SEND” to update the transmitter.

Rosemount 3490 Series Control Unit

To view or change the poll address:

1. From the Main Menu screen, select SETUP.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select SYSTEM.

4. Select FIXED.

5. Select HART.

6. Select Poll Address.

7. Follow the on-screen instructions to edit and save the new setting. (Press the Enter ( ) key if prompted to change the mode to “off-line”).

8. When finished, select “Quit” to exit to the previous menu.

Section 4: Configuration

Maximum Temperature P046 51 degC

ESC

DEL ENTER

HELP

wsq

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Shift

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(Field Communicator Screen)

Max Temp P046 51 °C

(Rosemount 3491 Screen)

Minimum Temperature P047

-11 degC

-11

ESC

DEL ENTER

HELP

wsq

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Shift

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(Field Communicator Screen)

December 2014

4.3.38 Maximum temperature (P046)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

2, 2, 8, 3. 2

This is a record of the maximum measured temperature.

Field Communicator or AMS

To view the maximum temperature:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 8: Set Temperature.

4. Select 3: Internal Extremes.

5. Select 2: Maximum Temperature P046.

Rosemount 3490 Series Control Unit

To view the maximum temperature:

1. From the Main Menu screen, select MONITOR.

2. Select the transmitter (e.g. “Tx1: 3107”).

4.3.39 Minimum temperature (P047)

3. Select DIAGNOSTICS.

4. Select HISTORY.

5. Select Max Temp.

6. When finished, select “Quit” to exit to the previous menu.

Fast Keys

2, 2, 8, 3. 4

This is a record of the lowest measured temperature.

Field Communicator or AMS

To view the minimum temperature:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 8: Set Temperature.

4. Select 3: Internal Extremes.

5. Select 4: Minimum Temperature P047.

Section 4: Configuration

Reference Manual

Min Temp P047

-11 °C

(Rosemount 3491 Screen)

(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

Rosemount 3490 Series Control Unit

To view the minimum temperature:

1. From the Main Menu screen, select MONITOR.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DIAGNOSTICS.

4. Select HISTORY.

5. Select Min Temp.

6. When finished, select “Quit” to exit to the previous menu.

4.3.40 Date (P003)

Section 4: Configuration

December 2014

Fast Keys

2, 2, 4, 1. 6

This is a record of the last date there was a change.

Field Communicator or AMS

To v iew the date:

1. From the Home screen, select 2: Configure.

2. Select 2: Manual Setup.

3. Select 4: HART/Identity.

4. Select 1: Identity.

5. Select 6: Date P003.

Rosemount 3490 Series Control Unit

To v iew the date:

1. From the Main Menu screen, select MONITOR.

2. Select the transmitter (e.g. “Tx1: 3107”).

Date P003 09/11/2009

09/11/2009

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HELP

iko

DEL ENTER

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ESC

Date P003 09/11/09

Section 4: Configuration

3. Select DIAGNOSTICS.

4. Select HISTORY.

5. Select Date.

6. When finished, select “Quit” to exit to the previous menu.

Section 4: Configuration

December 2014

Reference Manual

00809-0200-4840, Rev BA

Section 4: Configuration

Reference Manual

00809-0200-4840, Rev BA

Section 5: Service and Troubleshooting

December 2014

Section 5 Service and Troubleshooting

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 81

Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 82

Power failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 82

False echoes under certain ambient operating conditions . . . . . . . . . . . . . . . . . . . .page 82

Monitoring and diagnostic parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 83

5.1 Safety messages

Procedures and instructions in this manual may require special precautions to ensure the safety of the personnel performing the operations. Information that raises potential safety issues is

indicated by a caution symbol ( ). The external hot surface symbol ( ) is used when a surface is hot and care must be taken to avoid possible burns. If there is a risk of an electrical shock the

( ) symbol is used. Refer to the safety messages listed at the beginning of each section before performing an operation preceded by this symbol.

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

 Make sure only qualified personnel perform the installation.  Use the equipment only as specified in this manual. Failure to do so may impair the

protection provided by the equipment.

Explosions could result in death or serious injury.

 Verify that the operating environment of the transmitter is consistent with the

appropriate hazardous locations certifications.

 Before connecting a HART

-based communicator in an explosive atmosphere, make sure the instruments in the loop are installed in accordance with intrinsically safe or non-incendive field wiring practices.

Electrical shock could cause death or serious injury.

 Use extreme caution when making contact with the leads and terminals.

Any substitution of non-recognized parts may jeopardize safety. Repair, e.g. substitution of components etc., may also jeopardize safety and is under no circumstances allowed.

Section 5: Service and Troubleshooting

December 2014

Reference Manual

00809-0200-4840, Rev BA

5.2 Servicing

The only maintenance required is to occasionally check the transmitter face to ensure it remains clean and check that the wiring is in good condition. There are no spare parts for the transmitter. If a problem persists, contact Rosemount Inc. for advice.

5.3 Power failure

All parameters are held in EPROM memory. In the event of a power failure, or disconnection from the power supply, the transmitter will remember all of it's last parameter values and will resume correct operation once power is restored.

5.4 False echoes under certain ambient operating conditions

In applications where elevated ambient temperatures of around 50 to 60 °C are experienced, together with poor liquid surface conditions (excessive surface agitation, foam, etc.) at a high level and within 0.5 m of the transducer face, the transmitter may see a false echo and report a false high level measurement.

If this situation happens, with reference to Section 4 and this section, there are two field-configurable resolutions:

 Upper Blanking Distance (P023)

The factory default value of this parameter is 0.3 m, measured down from the transducer face.

If it is possible to operate with an increased value between 0.3 and 0.5 m, then setting P023 to a value of 0.5 m eliminates the false echo. Trying several different values is recommended as a smaller value of P023, if the application requires, may be possible.

 Threshold 1 Size (P048)

The factory default value of this parameter is 4%.

If the false echo is reported at the end of the Upper Blanking Distance (0.3 m or as adjusted in P023 above), then it is recommended to set the value of parameter Threshold 1 Size (P048) to a value sufficient to ignore this false echo. This should be implemented by reading the size of the false echo (see D911 on page 91), and setting the P048 to a value 4% greater than the reported value in D911.

Section 5: Service and Troubleshooting

Reference Manual

00809-0200-4840, Rev BA

Section 5: Service and Troubleshooting

5.5 Monitoring and diagnostic parameters

Note

 For menu structures, see Appendix C: Rosemount 3490 Series Universal Control Unit or

Appendix D: Field Communicator as appropriate for your HART Master Device.

Rosemount 3490 Series Control Unit

The 'D' prefixed parameters (e.g. D900) monitor the transmitter operation. For convenience, the parameter identification numbers (D***) are used in parameter headings and descriptions in this section.

A full menu map showing how to access transmitter parameters using the control unit’s menu system is in Appendix C: Rosemount 3490 Series Universal Control Unit.

Note

 The Rosemount 3490 Control Unit software must be version 3.40 or later.

December 2014

Field Communicator and AMS

For convenience, Field Communicator fast key sequences are labeled “Fast Keys” for each software function below the appropriate headings.

Example software function

Fast Keys

Connect the Field Communicator leads to the transmitter, and turn on the Field Communicator by pressing the ON/OFF key. The Field Communicator will search for a HART-compatible device and indicate when the connection is made. If the Field Communicator fails to connect, it

indicates that no device was found. If this occurs, check the lead connections and re-try.

A full menu map showing how to access transmitter parameters using the Field Communicator is in Appendix D: Field Communicator.

1, 2, 3, etc.

Section 5: Service and Troubleshooting

(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

5.5.1 Process Value / Primary Variable (PV) (D900)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

1, 2, 1

This indicates the live process value that drives the 4–20 mA Current Output. In HART terminology, this parameter is the Primary Variable (PV).

The factory default is for the process value to be a level measurement in meters, feet, or inches. It can be a volume or flow measurement if the transmitter has been configured to do those calculations.

Note

 Reported units for the HART Primary Variable is selectable (see page 51).

Field Communicator or AMS

Primary Variable D900

36.540 ft

To v iew the live PV:

1. From the Home screen, select 1: Overview.

2. Select 2: Primary Purpose Variables.

HELP

EXIT

3. Select 1: Primary Variable D900.

4. When finished, press EXIT to exit to the previous menu.

Note

 PV is available at other Fast Key sequences e.g. 3, 2, 1, 1

(see Appendix D: Field Communicator for a full menu map).

Rosemount 3490 Series Control Unit

To v iew the live PV:

1. From the Main Menu screen, select MONITOR.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select READINGS.

4. Select VARIABLES.

5. Select Xmtr PV.

6. When finished, select “Quit” to exit to the previous menu.

Xmtr PV D900

9.3104ft

Section 5: Service and Troubleshooting

Reference Manual

(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

Section 5: Service and Troubleshooting

5.5.2 Level / Secondary Variable (SV) (D901)

December 2014

Fast Keys

1, 2, 2

This indicates the live level measured by the transmitter. In HART terminology, SV is the Secondary Variable.

Note

 Figure 4-1 on page 37 shows this parameter in a tank geometry illustration.

 Units are in meters, feet, or inches depending on base units (see page 20).

Field Communicator or AMS

Level (SV) D901

36.540 ft

To view the live level measurement:

1. From the Home screen, select 1: Overview.

2. Select 2: Primary Purpose Variables.

HELP

3. Select 2: Level (SV) D901.

4. When finished, press EXIT to exit to the previous menu.

Note

 SV is also available at the Fast Key sequence 3, 2, 1, 2

(see Appendix D: Field Communicator for a full menu map).

EXIT

Rosemount 3490 Series Control Unit

To view the live level measurement:

1. From the Main Menu screen, select MONITOR.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select READINGS.

4. Select VARIABLES.

5. Select Level (SV).

6. When finished, press the ESC key to exit to the previous menu.

Level (SV) D901

9.3104ft

Section 5: Service and Troubleshooting

(Field Communicator Screen)

Distance (TV) D902

1.690ft

(Rosemount 3491 Screen)

December 2014

5.5.3 Distance / Tertiary Variable (TV) (D902)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

3, 2, 1, 3

This indicates the live distance-to-surface measured by the transmitter. In HART terminology, this parameter is the Tertiary Variable (TV).

Note

 Figure 4-1 on page 37 shows this parameter in a tank geometry illustration, and how

Distance Offset (page 40) affects this value.

 Units are in meters, feet, or inches depending on base units (see page 20).

Field Communicator or AMS

Level (SV) D901

36.540 ft

To view the live distance-to-surface measurement:

1. From the Home screen, select 3: Service Tools.

2. Select 2: Variables.

HELP

EXIT

3. Select 1: Variables.

4. Select 3: Distance (TV) D902.

5. When finished, press EXIT to exit to the previous menu.

Rosemount 3490 Series Control Unit

To view the live distance-to-surface measurement:

1. From the Main Menu screen, select MONITOR.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select READINGS, and then select VARIABLES.

4. Select Distance (TV).

5. When finished, press the ESC key to exit to the previous menu.

Note

 Units are in meters, feet, or inches depending on base units (see page 20).

Section 5: Service and Troubleshooting

Reference Manual

Transducer Temperature D903

71.133 degF

EXIT

HELP

(Field Communicator Screen)

Xducer Temp D903

67.9 F

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

Section 5: Service and Troubleshooting

5.5.4 Temperature / Fourth Variable (FV) (D903)

December 2014

Fast Keys

3, 2, 1, 4

This indicates the live transmitter temperature on the Rosemount 3107, and the ambient temperature on the Rosemount 3108.

In HART terminology, this parameter is the Fourth Variable (FV).

Note

 Units are in C or F depending on the base units selected (see page 20).

Field Communicator or AMS

To view the live temperature measurement:

1. From the Home screen, select 3: Service Tools.

2. Select 2: Variables.

3. Select 1: Variables.

4. Select 4: Transducer Temperature D903.

5. When finished, press EXIT to exit to the previous menu.

Rosemount 3490 Series Control Unit

To view the live temperature measurement:

1. From the Main Menu screen, select MONITOR.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select READINGS.

4. Select VARIABLES.

5. Select Xducer temp.

6. When finished, press the ESC key to exit to the previous menu.

Section 5: Service and Troubleshooting

Percentage Current Output - (%)

Value: 90.039

HELP

100

(Field Communicator Screen)

(Rosemount 3491 Screen)

December 2014

5.5.5 % of current output (D905)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

3, 2, 2, 3

This indicates the percentage of the 4–20 mA output current in use.

 0% represents 4 mA

 100% represents 20 mA

Note

 When the Poll Address (page 101) is a non-zero number, the transmitter is in multi-drop

mode and the current output is fixed at 4 mA.

Field Communicator or AMS

To view the percentage of current output in use:

1.From the Home screen, select 3: Service Tools.

2.Select 2: Variables, and then 2: Analog Output.

3.Select 3: Percentage of Current Output.

4. When finished, press the Bksp key to exit to the previous menu.

Rosemount 3490 Series Control Unit

To view the percentage of current output in use:

1. From the Main Menu screen, select MONITOR.

% Current Out D905

90.0%

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select READINGS, and then select CURRENT.

4. Select % of Current Output.

5. When finished, press the ESC key to exit to the previous menu.

Section 5: Service and Troubleshooting

Reference Manual

(Field Communicator Screen)

(Rosemount 3491 Screen)

00809-0200-4840, Rev BA

5.5.6 Current output (D906)

Section 5: Service and Troubleshooting

December 2014

Fast Keys

3, 2, 2, 1

This indicates the actual output current in mA.

Note

 When the Poll Address (page 101) is a non-zero number, the transmitter is in multi-drop

mode and the current output is fixed at 4 mA.

Field Communicator or AMS

To view the actual output current:

1. From the Home screen, select 3: Service Tools.

2. Select 2: Variables.

Current Output - (mA)

Value: 19.047

HELP

3. Select 2: Analog Output.

4. Select 1: Current Output.

5. When finished, press the Bksp key to exit to the previous menu.

Rosemount 3490 Series Control Unit

To view the actual output current:

1. From the Main Menu screen, select MONITOR.

Current Output D906

19.05mA

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select READINGS, and then select CURRENT.

4. Select Current Output.

5. When finished, press the ESC key to exit to the previous menu.

Section 5: Service and Troubleshooting

Distance D910

2.327 ft

EXIT

HELP

(Field Communicator Screen)

Distance D910

2.227ft

(Rosemount 3491 Screen)

December 2014

5.5.7 Distance (D910)

Reference Manual

00809-0200-4840, Rev BA

Fast Keys

3, 1, 2, 1, 1

This indicates the distance from the transmitter face to a detected surface.

It is a useful diagnostic because a false surface signal can be identified and related to the physical nature of the installation.

Note

 Figure 4-1 on page 37 shows this parameter in a tank geometry illustration, and how

Distance Offset (page 40) does not affect this value.

Field Communicator or AMS

To view the distance to a detected surface:

1. From the Home screen, select 3: Service Tools.

2. Select 1: Alerts.

3. Select 2: Diagnostic Data.

4. Select 1: Target Data.

5. Select 1: Distance D910.

6. When finished, press EXIT to exit to the previous menu.

Rosemount 3490 Series Control Unit

To view the distance to a detected surface:

1. From the Main Menu screen, select MONITOR.

2. Select the transmitter (e.g. “Tx1: 3107”).

3. Select DIAGNOSTICS.

4. Select Distance.

5. When finished, press the ESC key to exit to the previous menu.

Section 5: Service and Troubleshooting

Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters Manuals & Guides

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Section 1 Introduction

1.1 Safety messages

1.2 Manual overview

1.3 Service support

1.4 Product recycling/disposal

Section 2 Transmitter Overview

2.1 Introduction to the transmitters

2.2 Theory of operation

2.3 Components of the transmitter

2.4 System architecture

Section 3 Installation

3.1 Safety messages

3.2 Considerations before installation

3.2.1 Safety considerations

3.2.2 Environmental considerations

3.3 Mechanical installation

3.3.1 Consider liquid surface conditions

3.3.2 Consider in-tank effects

3.3.3 Mounting the transmitter above the liquid surface

3.3.4 Open channel flow installations

3.4 Electrical installation

3.4.1 Connecting the transmitter

3.4.2 Remote temperature sensor (on 3108 only)

3.4.3 Wiring to allow HART communication

3.4.4 Lightning / surge protection and other loop devices

Section 4 Configuration

4.1 Overview

4.2 Command parameters

4.2.1 Base units

4.2.2 Set as empty

4.2.3 Present depth

4.2.4 Learn false echo

4.2.5 Auto tank map

4.2.6 Simulation of PV

4.2.7 Restart device

4.2.8 Load defaults

4.2.9 Simulate current output

4.2.10 Trim 4mA / Trim 20mA

4.3 Configuration parameters

4.3.1 Message (P000)

4.3.2 Tag (P001)

4.3.3 Descriptor (P002)

4.3.4 Final assembly number (P004)

4.3.5 Serial number (P005)

4.3.6 Bottom reference (P010)

4.3.7 Upper blanking (P023)

4.3.8 Lower blanking (P063)

4.3.9 Distance offset (P060)

4.3.10 Level offset (P069)

4.3.11 Tank shape / non-linear profile (P011)

4.3.12 Contents (volume) measurement

4.3.13 Flow measurement

4.3.14 Primary variable units (P012)

4.3.15 Scale factor / K-factor (P013)

4.3.16 Profile height / Power factor (P014)

4.3.17 Profile points 1 to 10 (P030 to P039)

4.3.18 Upper range value (P015)

4.3.19 Lower Range Value (P016)

4.3.20 Damping (P020)

4.3.21 Lost echo delay (P021)

4.3.22 Lost echo action (P022)

4.3.23 Speed of sound (P024)

4.3.24 Temperature (P025)

4.3.25 Set threshold (P026)

4.3.26 Transmit power control (P040)

4.3.27 Pulse repeat (P041)

4.3.28 Echoes needed (P042)

4.3.29 Threshold 1 time (P043)

4.3.30 Threshold 1 size (P048)

4.3.31 Target pulses (P044)

4.3.32 Target frequency (P045)

4.3.33 Spike rejection (P049)

4.3.34 False echo data (P081 to P088)

4.3.35 Clear false echoes (P089)

4.3.36 Transducer material (P970)