Rosemount® CTS - TGU53
Product Data Sheet
Ed 02
Technical Data - Gauge
Technical Data - Still Pipe Spherical Tanks
Measuring range
0 to 52 m
Operating accuracy
± 5 mm
Instrument accuracy
± 3 mm
Ambient operating
temperature
Dimension
Ø 114.3 x 4 mm, extending
throughout the full height of the
tank, up to 6 m segments
-40 to +70º C
Material
Aluminium 5083-0
Product Range
Liquefied gases according to IMO IGC
code
Purge Nozzle Flange: requested size (ANSI ½”)
Thread & plug (option); to suit
connections (G 3/8”)
Temperature application
Up to 6 primary inputs for 4-wire Pt100
sensors and up to 6 secondary inputs
Temperature range
-165º C to +100º C
Technical Data - Still Pipe Membrane Tanks
Temperature system
accuracy
± 0.2º C
Dimension
Pressure application
Evaluated to the directives EN 13445:2009
Ø 114.3 x 3.6 mm, extending
throughout the full height of the
tank, up to 6 m segments
Pressure sensor range
0.8 to 2 Bar (absolute)
Material
Pressure sensor accuracy
± 3 mbar
304 L stainless steel for GT 96/CS
1 and Mark III
Weight
33 kg (gauge socket and still pipe excluded)
Purge Nozzle
Cable glands, standard
M32 for cable with outer diameter 15-21 mm
Flange: requested size (ANSI ½”)
Thread & plug (option); to suit
connections (G 3/8”)
Number of radar channels One or two
Number of cable inlets
2
Flange fittings
See installation drawings
Technical Data - Thermowell
Material facing tank
atmosphere
Stainless steel 304L/316L, PTFE
(PolyTetraFluoroEthylene)
Dimension
Ø 33 mm x 3 mm
Material facing deck
Stainless steel 316/316L
Material
304 L stainless steel
Explosion protection
Intrinsically safe:
ATEX: II 1G Ex ia T4 Ga
II 1 G, Ex ia IIC T4
No. of temp.
sensors
1 - 6 sensors/thermowell
Sealing
IP66
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Rosemount logotype are registered trademarks of Rosemount Inc.
www.EmersonProcesss.com/mtm
February 2013
Ed 02
Rosemount® CTS - TGU 53
Tank Gauge Unit
The Tank Gauge Unit, TGU 53, is a liquefied gas gauge used within the Rosemount
CTS system. It is an intrinsically safe tank radar mounted on deck. The radar
transmission is guided through a full length still pipe measuring the surface of
the product. Using our own reliable method, the signal is digitally processed to
achieve a very accurate reading of the distance to the surface.
By using unique patented technologies two radar measurements can be done
separately and independently from each other in one gauge. One radar channel
measurement can be chosen with possibility to upgrade to dual channel
configuration.
©2013 Emerson Process Management. All rights reserved.
Emerson Process Management
Rosemount Tank Radar AB
Box 13045
SE-40251 Sweden
T +46 31 337 00 00
F +46 31 25 30 22
Product Data Sheet
February 2013
The contents of this publication are presented for information purposes only, and while effort has
been made to ensure their accuracy, they are not to be construed as warranties or guarantees,
expressed or implied, regarding the products or services described herein or their use or
applicability. Standard Terms and Conditions of Sale can be issued by contacting Rosemount
Tank Radar AB. We reserve the right to modify or improve the designs and specifications of our
products at any time without notice. Rosemount Tank Radar AB accepts no responsibility for any
errors that may appear in this publication.
„„ The most accurate and reliable level measurement from the pioneers in radar level
gauging and LNG CTS systems.
„„ All electronics is outside the tank, integrated under one cover.
„„ Measures close to tank bottom due to patented Array Attenuator.
„„ Dual channel measurement with one Tank Gauge Unit and one Still Pipe, enabling
Primary and Secondary CTS with less hardware.
„„ The Liquefied Gas Gauge is an integrated part of the Rosemount Custody Transfer
System.
„„ Factory Acceptance Tested using Moveable Echo to simulate any liquid level in tank.
Rosemount® CTS - TGU53
February 2013
February 2013
Rosemount® CTS - TGU53
The Gauge
The Tank Gauge Unit (TGU 53) incorporates measurement of
Level, Temperature and Pressure in the same integrated unit.
All the electronics can be exchanged from the deck without
opening the tank to atmosphere.
One TGU 53 can measure two levels independently by using
separate electronic boards, connected to the same antenna.
This enables Primary and Secondary CTS levels to be measured
with only one single still pipe installed in the tank.
TGU 53 also incorporates up to 6+6 Resistance Temperature
Detector sensors (RTD 4-wire Pt100) for measurement of
temperature in the tank, and up to two Pressure Sensors for
measurement of the vapor pressure.
The Still Pipe
The complete Still Pipe assembly consists of a Gauge Socket,
joined Still Pipe segments with equalizing holes and a Verification
Pin. Two vented Thermowells run alongside the radar Still Pipe
and in these the Temperature Sensors are inserted.
Brackets for securing the Still Pipe and the Thermowells to
the pump tower structure are used in accordance with the
appropriate tank engineering practice and are included with the
equipment.
The Array Attenuator
The Array Attenuator is a patented device located below the
still pipe for absorbing the microwave reflection from the tank
bottom. This enables level measurement even with very low
liquid levels in the tank. The bottom Temperature Sensor can be
mounted onto the Array Attenuator assembly.
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