Rosemount TankRadar Rex DAU 2100, Service Manual

Page: 9 / 154

1-1
Rosemount Tank Radar Rex
Chapter 1 System Description
Service Manual
308012En, Ed.2
May 2013
1. System Description
The 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
Figure 1-1. Example of a small TankRadar Rex System
TankMaster
RS232
Optional Second
Tank Group
FBM
Modbus
protocol
Field Bus
Control Room Level
Field Level
Analog In
Analog out
Temperature
Temp.
sensors
Temp.
sensors
Rex
Optional Host Com-
puter or Slave PC
DAU
Relay Out HART
Rex Rex
Rex Rex
DAU DAU