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11
Service Manual
Third edition, June 1997
The Saab TankRadar system is the main part of the Saab
Cargo Control system which includes the following optional
features:
• Cargo control functions with Saab TankRadar MaC
• Ballast level gauging and draft gauging with the
LevelDatic system
• Overfill and high level alarm system with Omicron
system
• Load calculation with Kockumation’s LoadMaster
The Work Station is used by the operator for monitoring of
tank ullages, temperatures, inert gas pressures and all the
other data that is handled by the Saab TankRadar. The Work
Station does the alarm handling of the measured values. The
Work Station communicates with other systems, such as load
calculators and electro-pneumatic level gauging systems (for
ballast etc.) and supervises the Transmitter and Level Unit
computers.
The Level Unit contains terminals for the intrinsically safe
connection of the Transmitters. It contains the electronics
used for processing the signals from the Transmitters, for
calculating the tank parameters, such as trim/list corrected
ullage, and for communicating with the Work Station.
The Transmitters measure the distance to the product surface
using a continuous radar signal. The Transmitters have an
Electronic Box that generates and processes the radar signal.
There are two types of Transmitters, one standard type with
a high performance Parabolic Antenna and another with a
Cone Antenna.
Optional equipment for each tank, such as temperature
sensors, inert gas pressure sensor or the Local Display, is
connected to a wire terminal inside the transmitter housing.
The inert gas pressure sensor is placed inside the transmitter
housing. The Local Display can display ullage, average tem-
perature and inert gas pressure of the tanks.
Figure 1-2. Parabolic
Antenna
Figure 1-3. Cone Antenna