Radar, servo or other level gauging
Gauge technology, accuracy, antenna or displacer arrangement, mounting nozzle, stilling well and hazardous-area certification are selected for the tank, roof and product.
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Oil terminal · Inventory measurement
Automatic Tank Gauging & Oil Terminal Inventory Systems
Simei Energy engineers and supplies automatic tank gauging systems for petroleum terminals, integrating radar or servo level gauges, multipoint temperature, water-bottom measurement, tank tables, inventory calculations, alarms and SCADA or terminal-management interfaces for projects across Africa and the Middle East.
ATG · Inventory · Integration
What is included in a tank gauging system?
A reliable inventory figure is not produced by a level transmitter alone. Tank geometry, reference height, temperature, water, density, calibration tables, calculation rules and data quality must be managed as one measurement chain.
Average temperature and water bottom
Multipoint temperature elements and water-interface measurement support volume correction, usable-product calculation and early identification of water accumulation.
Tank calibration and reference data
Certified strapping tables, reference height, deadwood, floating-roof correction and instrument datum are controlled so measured level converts into a traceable observed volume.
Inventory and standard-volume calculation
The system can calculate observed and standard volumes, mass or available capacity using agreed temperature, density and correction methods appropriate to the owner’s reporting duty.
Alarms and independent overfill protection
Operational high and low alarms are configured in the gauging system. Where an independent overfill-protection layer is required, its sensors and shutdown path remain separately engineered and tested.
Tank inventory software and integration
Tank status, trends, movements, alarms and reports can interface with PLC, SCADA, terminal automation, dispatch or enterprise systems through an approved and documented architecture.
01
Measurement philosophy and system design
Engineering starts from tank type and dimensions, products, roof arrangement, required inventory accuracy, operating and commercial uses, existing nozzles, area classification, power, communication distance and reporting platform. Simei Energy prepares the measurement philosophy, instrument selection, nozzle and stilling-well requirements, signal architecture, alarm matrix, data mapping and interface list. Each value is assigned a defined source, unit, quality status and calculation method.
02
Integrated ATG and inventory package
The package can include radar or servo gauges, temperature probes, water-interface sensors, pressure or density instruments when required, local displays, communication interfaces, barriers, junction boxes, tank hubs, servers or operator workstations and inventory software. Hazardous-area certificates, calibration documents, configuration files, network drawings, inspection points, export packing and recommended spares are coordinated under one approved equipment list.
03
Inventory accuracy and reconciliation
Level accuracy alone does not guarantee accurate stock. Tank-table uncertainty, reference-height change, thermal expansion, temperature profile, free water, density, roof position, line fill and timing of movements can all affect reconciliation. The agreed method therefore distinguishes measured values, calculated quantities and manual inputs, records data quality and supports comparison with transfers, physical checks and commercial records.
04
Installation, commissioning and project inputs
Installation verifies nozzle condition, datum, gauge alignment, stilling well, cable segregation, earthing, intrinsic-safety barriers and network continuity. Commissioning checks reference height, level, average temperature, water indication, alarm thresholds, communication recovery, tank-table import and report calculations against approved references. For a proposal, provide tank drawings and tables, products, roof types, accuracy and reporting needs, existing instruments, control-system interfaces, power and required delivery boundary.
Google & AI search answers
Automatic tank gauging questions
What is an automatic tank gauging system?
An ATG system continuously measures tank level and related variables, then combines them with tank calibration data to display inventory, available capacity, movements and alarms.
Is radar or servo gauging better for an oil terminal?
Both can provide high-quality measurement when correctly applied. Product properties, tank and roof design, required functions, maintenance philosophy, existing nozzles and owner standards determine the choice.
How does level become a standard inventory volume?
Measured level is converted through the certified tank table to observed volume, then adjusted using measured temperature, density and the agreed correction method. Water and other tank corrections are applied where relevant.
Why is multipoint temperature measurement used?
Large tanks can have temperature gradients. Multiple sensing points provide a more representative average product temperature for inventory correction than one local reading.
Does ATG replace independent overfill protection?
Not automatically. Inventory gauging and overfill prevention have different duties. Where the risk assessment requires independent protection, separate sensing and shutdown logic must be engineered and proof-tested.
Can tank inventory data connect to SCADA or ERP?
Yes. Levels, temperatures, volumes, alarms and movements can be exchanged with SCADA, terminal automation or business systems through approved protocols, data ownership and cybersecurity controls.
Does Simei Energy finance terminal projects?
No. Simei Energy provides technical services, equipment packages and engineering or EPC delivery. We do not provide investment, financing, EPC+F, BOOT, lease-to-own or deferred-payment funding.
Automatic tank gauging
Request a tank gauging package
Send tank drawings and calibration tables, products, roof types, required accuracy, reporting needs, existing instruments and control-system interfaces.