Emerson 308014EN, Edition 4 User Manual

5 (2)

Installation Manual

308014EN, Edition 4

May 2013

Tank Gauging System

www.rosemount-tg.com

Installation manual

Fourth edition

Copyright © May 2013

Rosemount Tank Radar AB

www.rosemount-tg.com

Copyright © May 2013

Rosemount Tank Radar AB

The contents, descriptions and specifications within this manual is subject to change without notice. Rosemount Tank Radar AB accepts no responsibility for any errors that may appear in this manual.

Trademarks

Rosemount, and the Rosemount logotype are trademarks of

Rosemount Inc.

TankRadar is a trademark of Rosemount Tank Radar AB.

HART is a trademark of HART Communication Foundation

Modbus is a trademark of Modicon.

Pentium is a trademark of Intel Corporation.

Windows NT is a trademark of Microsoft Corporation.

Viton is a trademark of Du Pont Performance Elastomers.

Spare Parts

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

Rosemount Tank Radar AB will not take any responsibility for faults, accidents, etc caused by non-recognized spare parts or any repair which is not made by Rosemount Tank Radar AB.

EU Conformity

The EC declaration of conformity for all applicable European directives for this product can be found on the Rosemount Tank Gauging website at www.rosemount-tg.com. A hard copy may be obtained by contacting our local sales representative.

Specific FCC Requirements (USA only)

Rosemount TankRadar REX generates and uses radio frequency energy. If it is not installed and used properly, that is, in strict accordance with the manufacturer´s instructions, it may violate FCC regulations on radio frequency emission.

Rosemount TankRadar REX has been FCC certified under test conditions which assume a metallic tank. Installation on a non-metallic tank is not certified, and is not allowed.

The FCC certificate for Rosemount TankRadar REX requires that the tank is closed as far as emitted radio energy is concerned. Tanks with open manholes, external-floating-roof tanks without still pipes etc. are not covered by the certificate.

www.rosemount-tg.com

Installation Manual

308014EN, Edition 4

Rosemount TankRadar REX

May 2013

Table of Contents

Contents

Recovery of Packing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . TOC-6

Recovery of Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TOC-7

1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 MANUAL OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

2. SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1 INTRINSIC SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1 2.2 EXPLOSION PROOF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2 2.3 EUROPEAN ATEX DIRECTIVE INFORMATION . . . . . . . . . . . . . . . . .2-3

2.3.1

Radar Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-3

2.3.2

Radar Tank Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-4

2.3.3

Transmitter Interface Card (TIC) . . . . . . . . . . . . . . . . . . . .

2-5

2.3.4

Temperature Multiplexer Card (TMC) . . . . . . . . . . . . . . . .

2-6

2.3.5

Data Acquisition Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-7

2.3.6

Remote Display Unit 40 (RDU 40) . . . . . . . . . . . . . . . . . .

2-8

3. DESCRIPTION OF 3900 REX . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1 TRANSMITTER HEAD RTG 3900 REX . . . . . . . . . . . . . . . . . . . . . . . .3-1

 

3.1.1

Transmitter Head Electronics . . . . . . . . . . . . . . . . . . . . . .

3-2

 

3.1.2

Analog Processing Card - APC . . . . . . . . . . . . . . . . . . . .

3-3

 

3.1.3

Transmitter Interface Card - TIC . . . . . . . . . . . . . . . . . . . .

3-3

 

3.1.4

Temperature Multiplexer Card - TMC . . . . . . . . . . . . . . . .

3-3

 

3.1.5

Relay Output Card - ROC . . . . . . . . . . . . . . . . . . . . . . . . .

3-3

 

3.1.6

Field Communication Card - FCC . . . . . . . . . . . . . . . . . .

3-3

 

3.1.7

Metrological Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4

3.2

ANTENNA TYPES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5

4. THE DATA ACQUISITION UNIT . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 LOCAL READOUT DISPLAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 4.2 WRITE ENABLE/INHIBIT SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2 4.3 CONNECTING THE DATA ACQUISITION UNIT, DAU 2100 . . . . . . . .4-3

4.3.1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3 4.3.2 Temperature Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3 4.3.3 Selecting the temperature range . . . . . . . . . . . . . . . . . . .4-4

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Table of Contents

May 2013

 

 

5. THE REMOTE DISPLAY UNIT RDU40. . . . . . . . . . . . . . . . 5-1

5.1 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2 5.2 TWO RDU 40 CONNECTED TO THE SAME REX . . . . . . . . . . . . . . .5-4

5.2.1 Data items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

6. THE FIELD COMMUNICATION UNIT . . . . . . . . . . . . . . . . . . 6-1

6.1 FCU ENCLOSURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1 6.2 COMMUNICATION PORTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

6.2.1 RS232 communication . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2 6.2.2 RS 485 communication . . . . . . . . . . . . . . . . . . . . . . . . . .6-3

6.3 WRITE INHIBIT/ENABLE SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3

6.4CONNECTING THE FIELD COMMUNICATION UNIT, FCU 2160 . . .6-4

6.4.1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4 6.4.2 Connection to a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

6.5 REDUNDANCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5

7. BUS MODEMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1

FIELD BUS MODEM 2180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2

 

7.1.1

DIN Rail Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2

 

7.1.2

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-3

 

7.1.3

TRL/2 Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-3

 

7.1.4

RS 232 Communication . . . . . . . . . . . . . . . . . . . . . . . . . .

7-4

 

7.1.5

USB Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-4

 

7.1.6

USB Driver Installation . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-5

 

7.1.7

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-7

 

7.1.8

Communicating with TankMaster™ . . . . . . . . . . . . . . . . .

7-7

 

7.1.9

USB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-8

 

7.1.10

RS 232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-8

 

7.1.11

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-9

7.2 ENRAF BUS MODEM, EBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-10

7.2.1 Connecting the Enraf Bus Modem . . . . . . . . . . . . . . . . . 7-11

7.2.2 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

8. JUNCTION BOXES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1

INTEGRATED JUNCTION BOX, JBI . . . . . . . . . . . . . . . . . . . . . . . . . .

8-1

 

8.1.1

Explosion Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-1

 

8.1.2

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-2

 

8.1.3

Cable Inlets - RTG 3900 . . . . . . . . . . . . . . . . . . . . . . . . . .

8-2

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May 2013

Table of Contents

 

 

8.2JUNCTION BOXES FOR INTRINSICALLY SAFE AND

EEX E ENVIRONMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3

8.2.1 JB 140-11 for EEx i environments . . . . . . . . . . . . . . . . . .8-3 8.2.2 JB 140-15 for EEx e environments . . . . . . . . . . . . . . . . . .8-3 8.2.3 Junction Boxes with Conduit Outlets . . . . . . . . . . . . . . . .8-4

8.3 CONNECTION OF TEMPERATURE SENSORS . . . . . . . . . . . . . . . . .8-5

8.3.1 Junction Box JBT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5 8.3.2 Junction Box JB 36/42 . . . . . . . . . . . . . . . . . . . . . . . . . . .8-6

9. CONNECTION TO COMPUTER NETWORKS. . . . . . . . . . . . . 9-1

9.1 CONNECT TO THE FCU FOR QUICK UPDATES . . . . . . . . . . . . . . . .9-1 9.2 CONNECT TO TANKMASTER FOR INVENTORY DATA . . . . . . . . . .9-1

10. MECHANICAL INSTALLATION. . . . . . . . . . . . . . . . . . . . . 10-1

10.1 MOUNTING A HORN ANTENNA GAUGE . . . . . . . . . . . . . . . . . . . .

.10-1

10.1.1

Installation Requirements . . . . . . . . . . . . . . . . . . . . . . .

.10-1

10.1.2

Free Space Requirements . . . . . . . . . . . . . . . . . . . . . .

.10-2

10.1.3

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.10-3

10.1.4

Installation on the tank . . . . . . . . . . . . . . . . . . . . . . . . .

.10-4

10.2 MOUNTING THE PARABOLIC ANTENNA GAUGE . . . . . . . . . . . .

.10-6

10.2.1

Inclination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.10-6

10.2.2

Free Space Requirements . . . . . . . . . . . . . . . . . . . . . .

.10-9

10.2.3

Socket Requirements . . . . . . . . . . . . . . . . . . . . . . . . . .

10-10

10.2.4

Recommended Installation . . . . . . . . . . . . . . . . . . . . . .

10-10

10.2.5

Mounting the Flange Ball model T30 . . . . . . . . . . . . . .

10-11

10.2.6

Mounting the Flange Ball model T38-W . . . . . . . . . . . .

10-12

10.2.7

Mounting the Antenna . . . . . . . . . . . . . . . . . . . . . . . . .

10-14

10.3 MOUNTING A STILL PIPE GAUGE . . . . . . . . . . . . . . . . . . . . . . . . .10-20

10.3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-20 10.3.2 Still Pipe Requirements . . . . . . . . . . . . . . . . . . . . . . . .10-21 10.3.3 Flange Requirements . . . . . . . . . . . . . . . . . . . . . . . . . .10-21 10.3.4 Recommended Installation . . . . . . . . . . . . . . . . . . . . . .10-22 10.3.5 Free space requirements - RTG 3950 Fixed Version . .10-23

10.3.6Installation of the 3950 Fixed Version on the tank . . . .10-24

10.3.7Free space requirements - RTG 3950 Inclined Version 10-28

10.3.8

Installation of the RTG 3950 Inclined Version . . . . . . .

10-30

10.4 MOUNTING A LPG/LNG GAUGE . . . . . . . . . . . . . . . . . . . . . . . . . .10-38

10.4.1 Temperature and Pressure Measurement. . . . . . . . . . .10-38 10.4.2 Still Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-38 10.4.3 Reference Pin and Reflector . . . . . . . . . . . . . . . . . . . .10-40 10.4.4 Extension Pipe for Minimum Distance. . . . . . . . . . . . . .10-42 10.4.5 Installation on the tank. . . . . . . . . . . . . . . . . . . . . . . . . .10-43

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308014EN, Edition 4

Table of Contents

May 2013

 

 

11. ELECTRICAL INSTALLATION OF THE REX GAUGES. . . . . 11-1

11.1 CABLING FOR POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1

11.2 CABLING FOR TRL/2 BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-3

11.3 RECOMMENDED CABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-3

11.4 GROUNDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-3

11.5 CONNECTING THE RADAR TANK GAUGE 3900 . . . . . . . . . . . . . .11-4

11.5.1 Cable Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6

11.5.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7

11.5.3 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-9

11.5.4 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13

11.5.5 TRL/2 Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14

11.5.6 Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-15

11.5.7 Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-17

11.5.8 Temperature Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . 11-18

11.5.9 Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-20

11.5.10 HART Slaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-21

11.5.11 DAU/RDU 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-22

12. SENSOR INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . 12-1

12.1 TEMPERATURE SENSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-1

12.2 WATER LEVEL SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-5

12.2.1 Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . .12-5

12.2.2 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-6

13. LIST OF DRAWINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

13.1MECHANICAL INSTALLATION DRAWINGS TANKRADAR REX . . .13-1

13.2 ELECTRICAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-2 13.3 FIELD BUS MODEM, FBM 2180 . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-2 13.4 FIELD COMMUNICATION UNIT, FCU 2160 . . . . . . . . . . . . . . . . . . .13-3 13.5 DATA ACQUISITION UNIT, SDAU 2100 . . . . . . . . . . . . . . . . . . . . . .13-3 13.6 REMOTE DISPLAY UNIT, RDU 40 . . . . . . . . . . . . . . . . . . . . . . . . . .13-3 13.7 JUNCTION BOXES - JB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-4 13.8 TEMPERATURE / WLS SENSORS . . . . . . . . . . . . . . . . . . . . . . . . . .13-4

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Installation Manual

308014EN, Edition 4

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May 2013

Table of Contents

 

 

14. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1

14.1 RTG 3900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-1

14.1.1 Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-2 14.1.2 Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-3 14.1.3 Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-3 14.1.4 External Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-3 14.1.5 Temperature Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-3

14.2 RTG 3920 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-4 14.3 RTG 3930 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-5 14.4 RTG 3950 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-6 14.5 RTG 3960 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-7 14.6 DATA ACQUISITION UNIT, DAU 2100 . . . . . . . . . . . . . . . . . . . . . . .14-8 14.7 REMOTE DISPLAY UNIT, RDU 40 . . . . . . . . . . . . . . . . . . . . . . . . . .14-9 14.8 FIELD COMMUNICATION UNIT, FCU 2160 . . . . . . . . . . . . . . . . . .14-10 14.9 FIELD BUS MODEM, FBM 2180 . . . . . . . . . . . . . . . . . . . . . . . . . . .14-10 14.10 ENRAF BUS MODEM, EBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-10

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .INDEX-1

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Installation Manual

Rosemount TankRadar REX

308014EN, Edition 4

Table of Contents

May 2013

 

 

Recovery of Packing Material

Rosemount Tank Radar AB is fully certified according to ISO 14000 environmental standards. By recycling the plywood boxes material used for shipping our products you can contribute to take care of the environment.

Reuse

Experience has shown that NEFAB ExPak packaging can be used 4-5 times.

Recycling

After careful disassembly the plywood sides may be reused. Metal waste may be converted.

Energy recovery

Products which have served their time may be divided into wood and metal components and the wood can be used as fuel in sufficient ovens.

Due to its low moisture content (approximately 7%) this fuel has a higher calorific value than ordinary wood fuel (moisture content approximately 20%).

When burning interior plywood the nitrogen in the adhesives may increase emissions of nitrogen oxides to the air 3-4 times more than when burning bark and splinter.

Note!

Landfill is not a recycling option and should be avoided.

 

 

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Installation Manual

308014EN, Edition 4

Rosemount TankRadar REX

May 2013

Table of Contents

 

 

Recovery of Products

The label below is put on Rosemount Tank Gauging products as a recommendation to customers if scrapping is considered.

Recycling or disposal should be done following instructions for correct separation of materials when breaking up the units.

label_180.eps

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Installation Manual

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Table of Contents

May 2013

 

 

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Installation

308014EN, Edition 4

Rosemount Tank Radar REX

May 2013

Chapter 1 Introduction

 

 

1.Introduction

The Rosemount TankRadar REX System is a monitoring and control system for tank level gauging. The system can interface various sensors, such as temperature and pressure sensors, for complete inventory control.

There is a distributed intelligence in the various units of the system. The units continuously collect and process information. When a request for information is received an immediate response is sent with updated information. The units communicate with each other on a field bus, the TRL/2 Bus.

No part of the equipment is in actual contact with the product in the tank and the antenna is the only part of the gauge that is exposed to the tank atmosphere. The Radar Tank Gauge sends microwaves towards the surface of the product in the tank. The level is calculated based on the echo from the surface.

TankRadar REX can measure the level of almost any product, including bitumen, crude oil, refined products, aggressive chemicals, LPG and LNG, etc. Using a suitable Tank Connection Unit, the TankRadar REX System can gauge any type of tank.

1-1

Emerson 308014EN, Edition 4 User Manual

 

Installation Manual

Rosemount Tank Radar REX

308014EN, Edition 4

Chapter 1 Introduction

May 2013

 

 

 

 

TankMaster

Report

Alarm Log

 

 

 

WinOpi

 

 

 

Printer

Printer

Control

Plant Host

RS-232C

 

 

 

 

Computer

 

 

 

 

Room

 

FBM

 

 

 

Level

 

 

 

 

 

To Other

 

 

TRL/2 Group Bus

 

 

 

FCUs

 

 

FCU

FCU

 

Group

 

 

 

 

Non-

 

 

 

 

 

 

 

 

 

 

Level

Hazardous

 

 

 

FBM

To Portable

Area

 

To Other

 

 

 

 

 

 

 

Service PC

 

 

 

 

 

 

Tanks

 

 

 

 

 

 

TRL/2 Field Bus

TRL/2 Field Bus

 

Hazardous

 

 

 

 

 

 

 

 

 

 

Area

 

 

 

 

 

DAU

 

 

 

 

 

RTG

 

 

 

RTG

DAU Parabolic An-

Field

 

RTG

 

Still Pipe

tenna Gauge

LPG/LNG

 

 

 

Level

 

Gauge

 

 

 

DAU

 

 

 

Gauge

 

 

 

 

 

 

 

 

 

 

 

Temperature

 

 

 

 

 

 

Sensors

 

 

 

 

Temperature

 

 

 

 

 

 

Sensors

 

 

REX_System_General.eps

Figure 1-1. General configuration of a TankRadar REX system.

All the measured data is presented to the operator by the TankMaster WinOpi, which in its complete version contains inventory functions. A plant host computer can be connected for further processing of data.

All Rosemount Tank Gauging supplied parts for tank top mounting weigh less than 25 kg (55 lb.) (except for pressure flange etc. for the LPG/LNG Gauge). This makes it possible for one man to carry the various TankRadar parts to the tank top for installation.

Please read the Technical Description for a more detailed description of the Rosemount TankRadar REX system.

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Installation

308014EN, Edition 4

Rosemount Tank Radar REX

May 2013

Chapter 1 Introduction

 

 

The basic parts of the Rosemount TankRadar REX System are:

The Radar Tank Gauge, RTG, is an intelligent explosion protected instrument for measuring the level of a product inside a tank. Four different Tank Connection Units can be attached in order to satisfy a variety of different applications.

The RTG 3900 is equipped with auxiliary inputs such as temperature sensor inputs and analog inputs. The RTG 3900 also features two relay outputs.

The Data Acquisition Unit, DAU, is used for measuring temperature and can, as an option, be equipped with a Local Readout Display (LCD) for presentation of measured values.

The Field Communication Unit, FCU, acts as a gateway and data concentrator between the Group Bus and the Field Bus. Each FCU can have a total of 32 RTGs and 32 DAUs connected to it.

The Field Bus Modem, FBM, is a converter between RS-232C and the TRL/2 Bus. It is used for connecting a PC with TankMaster to the TRL/2 Bus.

The TankMaster WinOpi is the operator´s interface for the REX system. The WinOpi is used for setting up a REX system with alarm handling, batch reports, automatic report handling, historical data sampling and inventory calculations.

The TankMaster WinSetup is a software for configuration, calibration and service of a REX System.

1-3

 

Installation Manual

Rosemount Tank Radar REX

308014EN, Edition 4

Chapter 1 Introduction

May 2013

 

 

1.1Manual Overview

This manual provides information about mechanical and electrical installation of Rosemount TankRadar REX equipment. It covers the TankRadar REX 3900 series of transmitters, and also provides instructions for TRL/2 Data Acquisition Units, Field Communication Units and Field Bus Modems.

Chapter 1 provides an overview of the

Rosemount TankRadar REX radar gauging system.

Chapter 2 gives a brief description of safety concepts and

European ATEX Directive information.

Chapter 3 describes the 3900 transmitter head and the corresponding antennas.

Chapter 4 describes the Data Acquisition Unit in the

TankRadar REX system.

Chapter 5 describes the Display Unit RDU 40.

Chapter 6 describes the Field Communication Unit (FCU).

Chapter 7 describes Bus Modems used for communication between a workstation and a TankRadar REX level gauging system.

Chapter 8 describes various types of Junction Boxes that can be used to connect different system units.

Chapter 9 provides information on how to connect a

TankRadar REX system to a host computer system.

Chapter 10 describes how to assemble the various gauge types and how to mount them on a tank.

Chapter 11 describes electrical installation of the

TankRadar REX gauge system.

Chapter 12 describes installation of sub-supplier equipment used in the TankRadar REX system.

Chapter 13 provides a list of installation drawings.

Chapter 14 provides technical data for the different REX units.

1-4

Installation Manual

308014EN, Edition 4

Rosemount Tank Radar REX

May 2013

Chapter 2 Safety

 

 

2.Safety

Rosemount TankRadar REX equipment is often used in areas where flammable materials are handled and where an explosive atmosphere may be present. To protect both the plant and the personnel, precautions must be taken to ensure that this atmosphere cannot be ignited. These areas are called hazardous areas and equipment within these areas must be explosion protected.

A number of different explosion protection techniques have been developed over the years. Intrinsic safety and explosion proof (or flame proof) safety are two techniques.

2.1Intrinsic Safety

Intrinsic safety, IS, is based on the principle of restricting electrical energy available in hazardous-area circuits such that any sparks or hot surfaces, that may occur as a result of electrical faults in components, are unable to cause ignition. Intrinsic safety is the only technique accepted for Zone 0 hazardous areas. It is also safe for personnel and allows equipment to be maintained without the need for a gas-free certificate.

For example, temperature measurement with the DAU is intrinsically safe.

The basic principles of intrinsic safety are:

All flammable materials are grouped according to the energy needed to ignite them.

Equipment located in hazardous areas are classified according to the maximum surface temperature that it can produce and this must be safe with the flammable gases that may be present.

Hazardous areas are classified according to the probability that an explosive atmosphere is present, and this dictates whether or not a particular explosion protection technique may be used.

Note!

For trouble shooting and repair work of components in or in connection

 

to intrinsically safe equipment, strict observance of the following rules is

 

necessary:

 

- Disconnect the power supply to the Radar Tank Gauge.

 

- Use a certified battery operated instrument only.

 

- Use Rosemount TankRadar REX original spare parts only.

 

Replacement with non-original spare parts may jeopardize the intrinsic

 

safety.

 

 

2-1

 

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308014EN, Edition 4

Chapter 2 Safety

May 2013

 

 

2.2Explosion Proof

Explosion proof enclosures can be used when an explosion can be allowed inside the enclosure as long as it does not spread to the outside. The enclosure must be strong enough to withstand the pressure and must have narrow gaps to allow the pressure to escape without igniting the atmosphere outside of the equipment.

Note!

Any substitution to non-recognized parts may impair safety.

 

The explosion-proof (flame-proof) enclosure of the Transmitter Head

 

must not be opened while the unit is powered.

 

 

2-2

Installation Manual

308014EN, Edition 4

Rosemount Tank Radar REX

May 2013

Chapter 2 Safety

 

 

2.3European ATEX Directive Information

2.3.1Radar Unit

The REX Radar Unit has been certified to comply with Directive 94/9/EC of the European Parliament and the Council as published in the Official Journal of the European Communities No. L 100/1.

Figure 2-1. Certification label ATEX for the 2015 Radar Unit (used in 3900 series radar tank gauges).

The following information is provided as part of the label of the radar unit:

Name and address of the manufacturer (Rosemount Tank Radar AB).

CE Conformity Marking

Complete model number

The serial number of the device

Year of construction

Marking for explosion protection:

Ex d IIB Gb T6 (-40 °C Ta +70 °C)

Baseefa(2001) ATEX certificate number: Baseefa03ATEX0071X

Special Conditions for Safe Use (X):

The Type TH2015-2019 Radar Units are not to be mounted directly on to a tank.

For replacement purposes the cover fastening screws are to be of minimum grade A4-80 stainless steel.

The permanently attached cables are to be suitably terminated and protected against impact.

2-3

 

Installation Manual

Rosemount Tank Radar REX

308014EN, Edition 4

Chapter 2 Safety

May 2013

 

 

2.3.2Radar Tank Gauge

The 3900 Radar Tank Gauge (type TH2015-2019 Radar Unit with antenna certified for Zone 0) has been certified to comply with Directive 94/9/EC of the European Parliament and the Council as published in the Official Journal of the European Communities No. L 100/1.

The 3900 series of Radar Tank Gauges is intended to be mounted directly on tank.

Figure 2-2. Certification label ATEX for the 3900 Series Radar Tank Gauge.

The following information is provided as part of the label of the radar tank gauge:

Name and address of the manufacturer (Rosemount Tank Radar AB).

CE Conformity Marking

Complete model number

The serial number of the device

Year of construction

Marking for explosion protection:

Ex d IIB Ga/Gb T6 (-40 °C Ta +70 °C)

Baseefa(2001) ATEX certificate number: Baseefa03ATEX0071X

Special Conditions for Safe Use (X):

For replacement purposes the cover fastening screws are to be of minimum grade A4-80 stainless steel.

The permanently attached cables are to be suitably terminated and protected against impact.

2-4

Installation Manual

308014EN, Edition 4

Rosemount Tank Radar REX

May 2013

Chapter 2 Safety

 

 

2.3.3Transmitter Interface Card (TIC)

Figure 2-3. Certification label for the Transmitter Interface Card (TIC).

The Transmitter Interface Card (TIC) is mounted within the flameproof enclosure. It is required for intrinsically safe inputs such as 4-20 mA current loops and local display unit.

The following information is provided as part of the label of the TIC:

Name and address of the manufacturer (Rosemount Tank Radar AB)

CE Conformity Marking:

Year of construction

Marking for explosion protection:

[Ex ia] IIC (Ga) (-40 °C Ta +85 °C)

Baseefa(2001) ATEX EC-Type Examination Certificate number: Baseefa03ATEX0050U

Schedule of Limitations

The Transmitter Interface Card must be housed within an enclosure which provides a degree of protection of at least IP20.

The 0V connections must be interconnected and connected to an I.S. earth point in accordance with EN60079-14 12.2.4., when the component is installed within an assembly.

The arrangements for the connections to non-hazardous area and hazardous area external circuits must comply with the requirements of Clause 6.3 of EN 50020:2002.

Note!

For electrical (I.S.) parameters refer to the appended EC-Type

 

Examination Certificate Baseefa03ATEX0050U.

 

 

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308014EN, Edition 4

Chapter 2 Safety

May 2013

 

 

2.3.4Temperature Multiplexer Card (TMC)

Figure 2-4. Certification label for the Temperature Multiplexer Card (TMC).

The Temperature Multiplexer Card (TMC) is mounted within the flameproof enclosure. It is used for connecting up to 6 temperature sensors to the REX 3900 gauge.

The following information is provided as part of the label of the TMC:

Name and address of the manufacturer (Rosemount Tank Radar AB)

CE Conformity Marking:

Year of construction

Marking for explosion protection:

[Ex ia] IIC (Ga) (-40 °C Ta +85 °C)

Baseefa(2001) ATEX EC-Type Examination number: Baseefa03ATEX0050U

Schedule of Limitations

The Temperature Multiplexer Card must be housed within an enclosure which provides a degree of protection of at least IP20.

The 0V connections must be interconnected and connected to an I.S. earth point in accordance with EN60079-14 12.2.4., when the component is installed within an assembly.

The arrangements for the connections to non-hazardous area and hazardous area external circuits must comply with the requirements of Clause 6.3 of EN 50020:2002.

Note!

For electrical (I.S.) parameters refer to the appended EC-Type

 

Examination Certificate Baseefa03ATEX0050U.

 

 

2-6

Installation Manual

308014EN, Edition 4

Rosemount Tank Radar REX

May 2013

Chapter 2 Safety

 

 

2.3.5FF Adaptor Card (FFA)

Figure 2-5. Certification label for the FF Adaptor Card (FFA).

The FF Adaptor card (FFA) is mounted within the flameproof enclosure. It is, in conjunction with a Fieldbus Communication Board (BAS01ATEX1385U), used to interface to an intrinsically safe Fieldbus.

The following information is provided as part of the label of the FFA:

Name and address of the manufacturer (Rosemount Tank Radar AB)

CE Conformity Marking:

Year of construction

Marking for explosion protection:

[Ex ia] IIC (Ga) (-40 °C Ta +85 °C)

Baseefa(2001) ATEX EC-Type Examination Certificate number: Baseefa04ATEX0119U

Schedule of Limitations

The FF Adaptor Card must be housed within an enclosure which provides a degree of protection of at least IP20. If the FF Adaptor Card is mounted within a hazardous area it must be installed within an appropriately certified flameproof enclosure.

The arrangements for the connections to non-hazardous area and hazardous area external circuits must comply with the requirements of Clause 6.3 of EN 50020:2002.

The FF Adaptor Card is considered to be suitable for use within

EEx d apparatus with an Ambient Temperature range of (-40 °C Ta +85 °C).

Note!

For electrical (I.S.) parameters refer to the appended EC-Type

 

Examination Certificate Baseefa04ATEX0119U.

 

 

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308014EN, Edition 4

Chapter 2 Safety

May 2013

 

 

2.3.6Data Acquisition Unit (DAU)

Figure 2-6. Certification label ATEX for the Data Acquisition Unit.

The following information is provided as part of the label of the Data Acquisition Unit (DAU):

Name and address of the manufacturer (Rosemount Tank Radar AB)

CE Conformity Marking

Complete model number

The serial number of the device

Year of construction

Marking for explosion protection:

Ex ia IIB T4 Ga (-40 °C Ta +65 °C)

X20 Pin 6 w.r.t Pin 7

X20 Pin 5 w.r.t Pin 7

X21 (For connection of up to 14 RTDs)

 

 

 

Ui=14 V

Ui=6 V

U0=6 V

Ii=334 mA

Ii=60 mA

I0=394 mA

Pi=1.17 W

Pi=0.08 W

P0=1.25 W

Li=Ci=0

Li=Ci=0

Ui=1.2 V

 

 

Ii=10 mA

 

 

Pi=0.02 W

 

 

Li=0

 

 

Ci=13.5 F

Baseefa(2001) ATEX EC-Type Examination Certificate number: Baseefa03ATEX0044

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Rosemount Tank Radar REX

May 2013

Chapter 2 Safety

 

 

2.3.7Remote Display Unit 40 (RDU 40)

Figure 2-7. Approval label for the Remote Display Unit RDU40.

The following information is provided as part of the label of the Remote Display Unit 40 (RDU 40):

Name and address of the manufacturer (Rosemount Tank Radar AB).

CE Conformity Marking:

Year of construction

Marking for explosion protection:

Ex ib IIC T4 Gb (-40 °C Ta +70 °C)

Sira ATEX certificate number: Sira 00 ATEX 2062

The following instructions apply to equipment covered by certificate number Sira 00ATEX2062:

1The equipment may be used with flammable gases and vapours with apparatus groups IIC, IIB and IIA and with temperature classes T1, T2, T3 and T4.

2The equipment is only certified for use in ambient temperatures in the range -40 °C to +70 °C and should not be used outside this range.

3Installation shall be carried out in accordance with the applicable code of practice.

4Repair of this equipment shall be carried out in accordance with the applicable code of practice.

5Certification marking as detailed in drawing number 9150 074980.

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Chapter 2 Safety

May 2013

 

 

2-10

Installation Manual

308014EN, Edition 4

Rosemount Tank Radar REX

May 2013

Chapter 3 Description of 3900 REX

 

 

3.Description of 3900 REX

3.1Transmitter Head RTG 3900 REX

Depending on the type of tank connection unit that the transmitter head is mounted on, there are four types of Radar Tank Gauges. The transmitter head contains all the electronics for signal processing, communication and connection of external sensors. The RTG 3900 transmitter head is used on all the gauge types 3920 - 3960.

3900_TH.eps

RTG 3920

 

 

 

 

 

RTG 3930

 

 

 

 

 

RTG 3950

 

 

 

 

 

 

 

 

RTG 3960

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Horn Antenna

The Parabolic

Gauge for fixed roof

Antenna Gauge for

installation without still

demanding environ-

pipe.

ments without still pipe.

The Still Pipe Gauge for measuring in still pipes.

The LPG/LNG Gauge for liquid gas, LPG and LNG.

Figure 3-1. The RTG 3900 gauge can use different antennas.

3-1

 

Installation Manual

Rosemount Tank Radar REX

308014EN, Edition 4

Chapter 3 Description of 3900 REX

May 2013

 

 

3.1.1Transmitter Head Electronics

The electronics is mounted in an exchangable unit in the explosion proof Transmitter Head. A high measurement accuracy is achieved by using digital reference circuitry, and by controlling the internal temperature by an internal heater.

The 3900 transmitter head can be used on all types of TRL/2 antennas.

A metrological seal is available to prevent unauthorized changes of database settings.

Some of the electronic cards shown below are optional and may not be installed in your transmitter.

Transmitter Rectifier Card

3

1

2

4

Field Communication Card

Signal Processing Card

Analog Processing Card

Transmitter Interface Card

Temperature Multiplexing

 

Motherboard

 

1.

X12. Intrinsically safe connec-

 

 

tion for auxiliary inputs such as

 

 

Slave DAU/RDU, temperature

Electronics.eps

 

sensors and analog inputs.

 

 

2.

X11. Non-intrinsically safe con-

 

 

nection for power, communica-

 

 

tion and relays.

TH

3.

Electronic unit.

REX3900

4.

Ground connection.

 

Figure 3-2. RTG 3900 transmitter head electronics.

3-2

Installation Manual

308014EN, Edition 4

Rosemount Tank Radar REX

May 2013

Chapter 3 Description of 3900 REX

 

 

3.1.2Analog Processing Card - APC

The APC is used for filtering and multiplexing of analog input signals. By keeping the analog circuitry on a separate card a high Signal to Noise Ratio is achieved.

3.1.3Transmitter Interface Card - TIC

The Transmitter Interface Card (TIC) is required for intrinsically safe auxiliary inputs. The TIC includes:

Two supply zener barriers and two return zener barriers for 4-20 mA current loops.

One supply zener barrier for a Slave Data Acquisition Unit or a Remote Display Unit.

Signal/supply connection for optional Temperature Multiplexer Card (TMC).

3.1.4Temperature Multiplexer Card - TMC

The Temperature Multiplexer Card (TMC) is used to connect up to 6 temperature sensors. Both spot and average sensors are supported.

3.1.5Relay Output Card - ROC

The Relay Output Card (ROC) contains two relays. It allows controlling external devices such as valves, pumps, heating coils, overfill protection according to TÜV etc.

3.1.6Field Communication Card - FCC

The Field Communication Card (FCC) handles communication with external devices. There are different versions of the FCC card allowing you to use various types of communication protocols and even emulate other types of gauges.

3-3

 

Installation Manual

Rosemount Tank Radar REX

308014EN, Edition 4

Chapter 3 Description of 3900 REX

May 2013

 

 

3.1.7Metrological Seal

A switch on the FCC board can be used to prevent unauthorized changes in the RTG database. The switch can be sealed in the writeinhibit position by using a special plastic cover.

Internal switch

Metrological Seal

TH_Top.eps

Figure 3-3. RTG 3900 transmitter head with metrological seal.

External switch

REX can also be equipped with an external metrological seal. It consists of a rod which is connected to a write protection switch inside the transmitter head. The rod can be sealed.

Write enable

Write inhibit

WriteProtect.eps

Figure 3-4. RTG 3900 transmitter head with metrological seal.

3-4

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