Saab Marine Electronics TankRadar L/2 User manual

INSTALLATION
MANUAL
W11W12
FOR
INTRINSICALLY
SAFECIRCUITS
ONLY
"i"
W11W12
FOR
INTRINSICALLY
SAFECIRCUITS
ONLY
"i"
W11W12
FOR
INTRINSICALLY
SAFECIRCUITS
ONLY
"i"
Parabolic
Antenna
Gauge
Still Pipe
Gauge
Horn
Antenna
Gauge
LPG/LNG
Gauge
Copyright © June 1995
Saab Marine Electronics AB
USVersion

2 Saab TankRadar L/2
US Version. Seventh edition, June 1995
Installation Manual
Copyright © June 1994
Saab Marine Electronics AB
The contents, descriptions and specifications within this manual is
subject to change without notice. Saab Marine Electronics AB
accepts no responsibility for any errors that may appear in this
manual.
The manuals available forTankRadar L/2 are
- Technical Description
- Installation Manual
- Operator’s Manual
- Operator’s Manual for OPI/2
- COS Operator’s Manual
- Service Manual
The Technical Description contains all technical data on the vari-
ous parts of the TankRadar L/2 System.
The Installation Manual is used for planning and performing the
installation of the system.
Once the parts of the system have been installed, then use either
the Operator’s Interface (OPI) or the Configuration Software
(COS) to configure the system. See the OPI Operator’s Manual or
the COS Operator’s Manual for detailed explanation.
The OPI Operator’s Manual describes how to operate the
TankRadar L/2 System using the Operator’s Interface software on
a personal computer.
The Operator’s Manual for OPI/2 describes Operator’s Interface
with the optional inventory functions included, designated OPI/2.
The COS Operator’s Manual describes how to use the Configura-
tion Software (COS).

Saab TankRadar L/2 3
US Version. Seventh edition, June 1995
Installation Manual
Contents
The manuals available forTankRadar L/2 are ............................................... 2
Denominations and abbreviations used in this manual: .............................. 6
1 Introduction to theTankRadar L/2 System .................................... 7
2 Safety ............................................................................................... 10
2.1 Intrinsic Safety .................................................................................. 10
2.2 Explosion Proof................................................................................. 11
2.3 Specific FCC Requirements (US market only) ............................. 11
3 Description of the RadarTank Gauges ......................................... 12
3.1 Transmitter Head............................................................................. 12
3.1.1 Electronic Unit ............................................................................ 13
3.1.2 Cable Outputs ............................................................................. 13
3.1.3 Power Supply to the Radar Tank Gauge ................................. 14
3.1.4 Barrier Unit Card, BU (Option) ................................................ 14
3.1.5 Current Loop Card, CLC (Option)........................................... 15
3.1.6 Metrological Seal ........................................................................ 15
3.1.7 Installation Data for the Transmitter Head............................. 15
3.2 Description of the Horn Antenna Gauge, RTG 2920.................... 16
3.2.1 Installation Data for RTG 2920 ................................................. 16
3.3 Description of the Parabolic Antenna Gauge, RTG 2930............. 17
3.3.1 Installation Data for RTG 2930 ................................................. 17
3.4 Description of the Still Pipe Gauge, RTG 2940 ............................. 18
3.4.1 Installation Data for RTG 2940 ................................................. 18
3.5 Description of the LPG/LNG Gauge, RTG 2960 ........................... 19
3.5.1 Installation Data for RTG 2960 ................................................. 19
4 Description of the Data Acquisition Units ................................... 20
4.1 Connection of the Sensors .............................................................. 20
4.2 Selecting theTemperature Range .................................................. 21
4.3 Local Readout Display ..................................................................... 21
4.4 Write Enable/Inhibit Switch............................................................ 21
4.5 Common Installation Data for Both DAUs ................................... 22
4.6 Description of the Slave Data Acquisition Unit, DAU 2100......... 22
4.6.1 Installation Data for DAU 2100 ................................................ 22
4.7 Description of the Independent Data Acquisition Unit................ 23
4.7.1 Power Supply.............................................................................. 23
4.7.2 Relays (Optional) ........................................................................ 23
4.7.3 Installation Data for DAU 2130 ................................................ 24
5 Description of the Field Bus Modem, FBM 2170 ......................... 24
5.1 Installation Data for FBM 2170 ................................................. 24
6 Description of the Field Communication Unit, FCU 2160......... 25
6.1 Communication Ports ..................................................................... 25
6.2 FCU Enclosure.................................................................................. 26
6.3 FCU Power Supply ........................................................................... 26
6.4 Write Inhibit/Enable Switch............................................................ 26
6.5 Installation Data for FCU 2160....................................................... 27

4 Saab TankRadar L/2
US Version. Seventh edition, June 1995
Installation Manual
7 Description of the Junction Boxes................................................. 28
7.1 Junction Box JB 8 for Connection of RTG to Slave DAU ............. 28
7.2 Junction Box JB 12 for Connection of RTG (with CLC) to
Slave DAU ......................................................................................... 28
7.3 Junction Box JB 16 for Connection to RTG and Independent DAU
29
7.4 Junction Box JB 36 for Connection ofTemperature Sensors ....... 29
8 Connection to a Plant Host Computer (Plant DCS) .................. 29
8.1 Connect to the FCU for Quick Updates........................................ 30
8.2 Connect to OPI/2 for Inventory Data ............................................ 30
9 Installation Schedule ...................................................................... 30
10 Requirements on the installation of the RadarTank Gauges ..... 31
10.1 Requirements for the Horn Antenna Gauge, RTG 2920 .............. 32
10.1.1 Free Space Requirement ............................................................ 32
10.1.2 Socket Requirement.................................................................... 33
10.2 Requirements for Parabolic Antenna Gauge, RTG 2930.............. 34
10.2.1 Inclination of the Parabolic Antenna Gauge........................... 34
10.2.2 Free Space Requirement ............................................................ 35
10.2.3 Flange Requirements ................................................................. 36
10.2.4 New Tanks ................................................................................... 36
10.2.5 Socket Requirements.................................................................. 37
10.3 Requirements for the Still Pipe Gauge, RTG 2940 ....................... 38
10.3.1 Still Pipe Requirements.............................................................. 38
10.3.2 Flange Requirements ................................................................. 38
10.3.3 New Tanks ................................................................................... 39
10.3.3 Service Space ............................................................................... 39
10.4 Requirements for the LPG/LNG Gauge, RTG 2960 ..................... 40
10.4.1 Temperature and Pressure Measurement ............................... 40
10.4.2 Still Pipe ....................................................................................... 40
10.4.3 References in Still Pipe............................................................... 40
10.4.4 System with Reference Pin and Reflector Plug ...................... 41
10.4.5 System with Reference Pins Only ............................................ 41
10.4.6 Extension Pipe for Minimum Distance ................................... 41
11 Mechanical Installation of the RadarTank Gauges ...................... 42
11.1 Installation of Horn Antenna Gauge, RTG 2920 ........................... 42
11.2 Installation of the Parabolic Antenna Gauge, RTG 2930 ............. 44
11.3 Installation of the Still Pipe Gauge, RTG 2940.............................. 47
11.4 Installation of the LPG/LNG Gauge, RTG 2960 ............................ 50
12 Electrical Installation...................................................................... 53
12.1 Cabling for Power Supply ................................................................ 53
12.2 Cabling forTRL/2 Bus ...................................................................... 54
12.3 Grounding ......................................................................................... 54
12.4 Electrical Installation of the RadarTank Gauge, RTG .................. 54
12.4.1 The Non-Intrinsically Safe Connection (W11)........................ 54
12.4.2 The Intrinsically Safe Connection (W12)................................. 54

Saab TankRadar L/2 5
US Version. Seventh edition, June 1995
Installation Manual
12.5 Electrical Installation of the Data Acquisition Unit, DAU ........... 55
12.5.1 Electrical Installation of the Slave DAU, DAU 2100.............. 55
12.5.2 Electrical Installation of the Independent DAU, 2130........... 55
12.6 Electrical Installation of the Field Bus Modem, FBM 2170 .......... 56
12.7 Electrical Installation of the Field Communication Unit,
FCU 2160 .......................................................................................... 56
13 List of Drawings .............................................................................. 57
13.1 Mechanical Installation .................................................................... 57
13.2 Electrical Installation ....................................................................... 57
14 Description of the Required System Information ....................... 58
14.1 System Configuration ...................................................................... 58
14.2 System Master .................................................................................. 58
14.3 Plant Host Computer System (Plant DCS) .................................. 58
14.1.3 Tank Data ..................................................................................... 58
Required System Information Form......................................... Appendix 1
Index.................................................................................................... Index 1

6 Saab TankRadar L/2
US Version. Seventh edition, June 1995
Installation Manual
Denominations and abbreviations used in this manual:
BU - Barrier Unit
CLC - Current Loop Card
DAU - Data Acquisition Unit
DMB - DAU Mother Board
DOS - Disk Operating System. An operating system
for PC’s.
DPS - DAU Power Supply board
DXB - DAU Extended Board
EEPROM - Electrically Erasable PROM
FBM - Field Bus Modem
FCC - Federal Communications Commission
FCU - Field Communication Unit
FMCW - Frequency Modulated Continuous Wave
FSK - Frequency Shift Keyed
IS - Intrinsically Safe
JB - Junction Box
LCD - Liquid Crystal Display
OPI - Operator’s Interface
OS/2 - An operating system for PC’s.
PC - Personal Computer
PCB - Printed Circuit Board
PROM - Programmable Read Only Memory
PTFE - Polytetrafluoroethylene. A polymer also mar-
keted as Teflon.
RF-head - A device for emitting and receiving micro-
waves.
RTD - Resistance Temperature Detectors
RTG - Radar Tank Gauge
TH - Transmitter Head
TRL - Tank Radar L (First generation)
TRL/2 - Tank Radar L/2
VAC - Volts Alternating Current
VDC - Volts Direct Current

Saab TankRadar L/2 7
US Version. Seventh edition, June 1995
Installation Manual
1 Introduction to theTankRadar L/2 System
The TankRadar L/2 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 sys-
tem. 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 ex-
posed to the tank atmosphere. The Radar Tank Gauge sends mi-
crowaves towards the surface of the product in the tank. The level
is calculated based on the echo from the surface.
TankRadar L/2 can measure the level of almost any product,
including bitumen, crude oil, refined products, aggressive chemi-
cals, LPG and LNG, etc. Using a suitable Tank Connection Unit,
the TankRadar L/2 System can gauge any type of tank.
Operator's
Interface
(IBM PS/2 or
Compaq)
Optional Host
Computer or
Slave PC Optional Second
Tank Group
Modbus
protocol
FBM
RTG Independent
DAU
Slave
DAU Local
Readout
Temp.
sensors
Field bus
RTG RTG RTG
Slave
DAU Slave DAU
Temp.
sensors
RS232C
Control Room Level
Field Level
Temp. Sensors
Press. Transducers
etc
Analog
inputs
Analog
outputs
RTG
Figure 1.1. Example of a small TankRadar L/2 System.

8 Saab TankRadar L/2
US Version. Seventh edition, June 1995
Installation Manual
Group
Level
Field
Level
Temperature
Sensors
Control
Room
Level
Still Pipe
Gauge
DAU
DAU
RTG
Hazardous
Area
Non-
Hazardous
Area
Plant Host
Computer
To Portable
Service PC
with COS
FCU
FBM
To Other
FCUs
Operator's
Interface
TRL/2 Group Bus
TRL/2 Field Bus
TRL/2 Field Bus
RS-232C
RTG DAU
FCU
To Other
Tanks
Alarm Log
Printer
Report
Printer
Parabolic An-
tenna Gauge
RTG
FBM
Temperature
Sensors
LPG/LNG
Gauge
0
0
0
0.200
Cancel
ValueEntry
Enter NewTank
Tank1
Value HiLim LoLim HH Lim LL Lim
TempAvg
Level
Delay Hyst
TempAvg
Level
Pressure
Pressure
LeakLimit
Enable
Auto
Auto
Auto
18.000
120.0
2.0
2.000
80.0
0.0
20.000 1.000
5.0
0.5
0.200
Figure 1.2. Example of a general configuration of a TankRadar L/2 System.
All the measured data is presented to the operator by the
Operator’s Interface, which in its complete version contains inven-
tory functions. A plant host computer can be connected for further
processing of data.
All Saab Tank Control 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 descrip-
tion of the Saab TankRadar L/2 system.

Saab TankRadar L/2 9
US Version. Seventh edition, June 1995
Installation Manual
The basic parts of the TankRadar L/2 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 Data Acquisition Unit, DAU, can interface various
external sensors and actuators. There are two versions of the
DAU, the Slave DAU and the Independent DAU. The Slave
DAU can measure temperature while the Independent DAU,
in addition to temperature measurement , has analog and
digital inputs. Both versions can, as an option, be equipped
with a LCD-display for local readout of the 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 con-
nected 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 OPI
(or COS) to the TRL/2 Bus.
- The Operator’s Interface, OPI, is a software for presenting
the values measured in the TRL/2 system. The Operator’s
Interface is also used to set alarm limits, perform setups,
configuration and calibration of the TRL/2 System.
- The Configuration Software, COS, is normally used on a
portable Service PC, operating under DOS. The Service PC
can be connected to one of the FCUs Group Bus ports or
directly to the Field Bus via an FBM. It is used for service,
configuration and calibration purposes. It is not a substitu-
tion for the more powerful OPI.

10 Saab TankRadar L/2
US Version. Seventh edition, June 1995
Installation Manual
2 Safety
TankRadar L/2 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.
2.1 Intrinsic 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 com-
ponents, are too weak 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, the temperature measurement of the DAUs is intrin-
sically 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 accord-
ing 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.
Important!
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 Gauges or the
Independent Data Acquisition Units.
- Use a certified battery operated instrument only.
- Use Saab original spare parts only. Replacement with non-original
spare parts may jeopardize the intrinsic safety.