STaR TGE 5120 Tank Gauge Electronics
Saab Marine Electronics
Refurbished
The product shown in your photo is a Saab TankRadar STaR TGE 5120 Tank Gauge Electronics Unit, carrying part number 9150075-751, Rev F. It is an intrinsically safe electrical apparatus used as part of the Saab TankRadar STaR marine tank gauging system for cargo tank level monitoring, tanker cargo measurement, and hazardous-area tank gauging applications.
From the label visible in the image, the unit can be identified as:
This is a marine tank gauge electronics module, not a consumer radar device. It belongs to the Saab TankRadar STaR cargo tank gauging platform, which is widely associated with oil tankers, chemical tankers, product tankers, offshore cargo monitoring systems, and marine tank level measurement installations.
SM MARINE SERVICE™ supports shipowners, technical managers, marine workshops, and ship spare buyers looking for Saab TankRadar STaR TGE 5120 units, tank gauging electronics, TGU interface units, legacy marine radar tank gauging spares, and hard-to-source automation replacement parts.
Main product photo supplied by SM MARINE SERVICE™:
This image clearly shows the main circular TGE 5120 electronics housing and the TGU:X1 terminal block / interface module, which are important for correct spare identification and quotation matching.
The Saab TankRadar STaR TGE 5120 is a tank gauge electronics unit used in the Saab TankRadar STaR marine cargo tank gauging system. In a shipboard tank gauging installation, this type of unit works as part of the tank measurement chain responsible for supporting safe tank level gauging, signal processing, and communication of tank measurement data.
In practical marine use, the TGE 5120 is associated with systems that monitor:
The Saab TankRadar STaR family is known in marine applications as a radar-based tank gauging solution developed for high accuracy, low maintenance, and safe operation in hazardous cargo tank spaces.
The unit belongs to the Saab TankRadar STaR system family, historically associated with Saab Rosemount Tank Radar AB / Saab TankRadar marine gauging products used in tanker cargo monitoring and marine tank measurement systems.
TGE 5120
9150075-751
Rev F
TGU:X1
Marine Tank Gauge Electronics Unit / Tank Radar Gauging Electronics / Cargo Tank Level Monitoring Module
The TGE 5120 functions as part of a marine radar tank gauging system used to measure and manage tank level data in cargo tanks. While the exact system architecture can vary from ship to ship, the TGE unit generally forms part of the electronics section responsible for:
In a complete TankRadar STaR installation, the TGE 5120 does not normally work alone. It is part of a broader system that may include:
That is why correct identification of model, part number, revision, and interface arrangement is essential before ordering a replacement.
SM MARINE SERVICE™ can support buyers with photo-based identification, part-number confirmation, and replacement sourcing for Saab TankRadar marine tank gauging spare parts.
The TGE 5120 is part of a specialized marine tank gauging platform intended for ships that require reliable tank level measurement for cargo operations.
The product label clearly identifies the unit as an intrinsically safe electrical apparatus, which is critical for installation in hazardous cargo tank environments where flammable vapors may be present.
As part of the Saab TankRadar STaR system, the TGE 5120 supports radar-based tank gauging, a preferred solution on many tankers because it offers accurate level measurement without relying on older mechanical float-based systems.
This type of equipment is used in oil tankers, chemical tankers, and other vessels where cargo tank monitoring must comply with strict hazardous-area safety requirements.
Tank gauging electronics like the TGE 5120 form part of the data path between the tank measurement point and the vessel’s cargo monitoring / control system.
Many vessels still operate older Saab TankRadar installations. For those ships, finding the correct TGE 5120 replacement module is often far more practical than redesigning the complete tank gauging system.
Your supplied image clearly shows several useful identification points:
The large circular housing is the main electronics unit of the Saab TankRadar STaR TGE 5120.
The front label provides key identification data including:
The side module marked TGU:X1 appears to be the associated terminal or interface unit used for electrical connection and signal wiring.
The cable between the TGE housing and the TGU:X1 block indicates the relationship between the main electronics section and the terminal/interface module.
The terminal block includes numbered positions and wiring labels, which are important during maintenance, reconnection, or replacement work.
The TGE 5120 is relevant in vessels where cargo tank level gauging and safe tank monitoring are essential. Typical applications include:
For cargo tank level measurement, cargo transfer monitoring, and tank inventory observation.
Where hazardous-area-safe tank gauging is required for chemical cargo tanks.
For accurate level monitoring of multiple refined cargo products carried in separate tanks.
May also be found in marine/offshore storage or cargo transfer systems using Saab tank gauging architecture.
Used as part of a broader cargo monitoring and tank gauging network where tank level information must be displayed, recorded, and managed centrally.
Even though tank gauging technology has continued to evolve, older Saab TankRadar systems remain in service on many ships. For that reason, marine buyers still actively search for units like the TGE 5120.
When a vessel already has a Saab TankRadar STaR system onboard, replacing a faulty TGE 5120 with the same model is often the simplest and safest option.
Many tanker fleets continue to use proven cargo monitoring systems for years, creating steady demand for spare electronics modules and interface units.
Tank gauging systems are highly system-specific. Owners and marine engineers generally prefer a matching spare to avoid configuration problems and reduce commissioning risk.
Marine automation workshops may require a replacement unit, a donor module, or a matching spare for troubleshooting and repair work.
As with other marine electronics installed in demanding shipboard environments, the TGE 5120 may develop faults due to age, vibration, wiring problems, moisture, or system-related issues.
The cargo monitoring station may not receive any data from the tank gauge channel.
Possible causes:
The vessel may see no reading, frozen reading, or invalid tank level information.
Possible causes:
Level values may fluctuate or drop in and out unexpectedly.
Possible causes:
Because tank gauging data can be linked to alarm and monitoring logic, a TGE fault may indirectly affect cargo monitoring performance.
Using the wrong substitute unit, incorrect repair methods, or non-approved component replacement may affect system safety or compatibility.
Because this unit belongs to a hazardous-area marine tank gauging system, troubleshooting should be carried out carefully by qualified personnel following vessel safety procedures and maker recommendations.
Determine whether the problem is:
Before replacing anything, verify:
Check the terminal block for:
Look for:
The problem may not always be inside the TGE 5120 itself. Related components to inspect may include:
On ships with multiple tank gauges, comparing the faulty tank channel against a working one can help isolate whether the problem is in the TGE, wiring, or another system component.
If internal failure is suspected, replacement with a verified matching TGE 5120 unit is often the most practical marine solution.
SM MARINE SERVICE™ can assist with spare identification, part-number verification, and quotation support for Saab TankRadar STaR tank gauging components.
To improve service life and reduce failures in older Saab TankRadar STaR systems, the following maintenance practices are useful:
Regularly inspect terminal blocks and keep them free from corrosion, moisture, and loose contact problems.
Always note:
This makes reinstallation or replacement much easier.
Although built for marine service, the electronics should still be protected from unnecessary water ingress, rough handling, and unstructured dismantling.
As the unit is part of an intrinsically safe system, repair or substitution should be handled carefully and only by qualified personnel.
If spare units are kept onboard or in workshop stock, label them clearly with model and part number so they are not confused with similar TankRadar modules.
Marine buyers may search for this unit under many different names. To capture the full spare-parts demand, it is important to optimize for related search terms.
It is a marine tank gauge electronics unit used in the Saab TankRadar STaR cargo tank gauging system for tanker cargo tank level monitoring and hazardous-area tank measurement applications.
It is the part number shown on the unit label and is important for identifying the correct spare or replacement module.
No. The TGE 5120 is a component/module within the Saab TankRadar STaR system, not the entire cargo monitoring installation.
From the supplied photo, TGU:X1 appears to be the associated terminal/interface module used for wiring and electrical connection to the TGE 5120.
Because tanker cargo environments can be hazardous, equipment used in those areas must be designed so that it does not create unsafe ignition risks under approved operating conditions.
Yes. If you provide clear product photos, part number, revision, and vessel/tank application details, SM MARINE SERVICE™ can support identification and supply assistance for Saab TankRadar STaR spare parts.
The Saab TankRadar STaR TGE 5120 Tank Gauge Electronics Unit 9150075-751 Rev F is an intrinsically safe marine tank gauging electronics module used in Saab TankRadar STaR cargo monitoring systems. It is designed for hazardous-area tanker applications where reliable cargo tank level measurement and safe tank gauging are essential. The unit is commonly required as a replacement spare for existing Saab/Rosemount marine tank gauging installations on oil tankers, product tankers, and chemical carriers.
If you are looking for Saab TankRadar STaR TGE 5120, 9150075-751 Rev F, marine tank gauging electronics, cargo tank monitoring spare parts, or legacy Saab/Rosemount tank radar modules, SM MARINE SERVICE™ can support your requirement.
We support customers with:
SM MARINE SERVICE™
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Supply Scope:
Marine Automation Equipment / Tank Gauging Systems / Navigation & Communication / Fire & Safety / Engine Room Spare Parts / New Equipment / Reconditioned Equipment / Sourcing / Repair / Calibration / Technical Support
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Marketing Contact: Nazmul Hasan Bhuiyan
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