Connected. Secure. Compliant.

The Fuel Management System to Grow Your Business

With user-friendly navigation, streamlined inventory and compliance reporting, and powerful business analytics, the TLS-450PLUS Automatic Tank Gauge (ATG) is a fuel management tool that allows you to run fueling operations at peak efficiency. And, with frequent releases of operating software for the TLS-450PLUS tank gauge you can be assured that data is secure and software features are routinely updated and enhanced. 

The Hub of Your Compliance Program

Maintaining compliance is vital to ensuring you’re not cutting into profits with costly fines or fees. The TLS-450PLUS ATG is designed to help you meet those requirements and maintain records for regulatory purposes. With the availability to connect to a multitude of devices, and features like Continuous Statistical Leak Detection (CSLD) or Digital Pressurized Line Leak Detection (DPLLD), the TLS-450PLUS fuel management system provides flexibility to best suit your business.

Learn More About Leak Detection Methods
Bundle Financing Program

Ready To Transform Your Forecourt?

The Veeder-Root & NOV Bundle Financing Program with Patriot Capital allows you to upgrade your forecourt site equipment now! Act now to pocket unparalleled savings on eligible ATG, STP, Tank, and Piping products. Elevate your fueling station with a modern, compliant, and efficient forecourt.

Start Saving

See the Benefits of Upgrading

Learn more about the difference between the TLS-350 ATG and the enhanced features of the TLS-450PLUS ATG.

Discover the difference

Featured TLS-450PLUS ATG Software Enhancements

Business Inventory Reconciliation (BIR)

Business Inventory Reconciliation (BIR)

Monitors fuel activity through dispenser transactions and tank inventory movement that generates highly accurate inventory reconciliation data for in active underground storage tanks. BIR includes AccuChart™ In-Tank Calibration software to create a precise tank chart to reduce fuel variances to improve your bottom line. 

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Continuous Statistical Leak Detection (CSLD)

Continuous Statistical Leak Detection (CSLD)

A certified leak-testing technology that continuously monitors fuel height and temperature to detect quiet periods in the underground storage tank and collect leak-detection data during idle times. CSLD uses sophisticated statistical analysis to evaluate all information and create a database for compliance reporting.

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Balanced Tank Inventory Control

Balanced Tank Inventory Control

For store operators using manifolded tanks, the TLS-450PLUS ATG can be programmed using Dispense Mode to determine when to activate a specific tank based on the tanks fuel height, volume, or other setting specific to the pump configuration. Connects the TLS-450PLUS ATG with Red Jacket Control Boxes to give site managers total inventory control.

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TLS-450PLUS ATG Features

Intuitive User Access

  • Customize the home screen, by user, with Favorites to easily access commonly used screens
  • Workflow Wizard for easy step by step configuration
  • Large 8” color LCD touch screen navigation
  • Contextual help functionality for every feature
  • Customized alarm settings, automated reporting, and email notifications

Enhanced Business Analytics & Performance

  • BIR improves business decisions by combining meter transaction sales with AccuChart 3.0 In-Tank Calibration to better understand site variances
  • Timed Sudden Loss Detection monitors unexpected changes in inventory, exposing possible issues including theft during quiet periods
  • Standard configuration allows for up to 64 inputs, expandable to 256 inputs
  • Built-in data logging enables approved data transfer for wet stock management

Worry-Free Regulatory Compliance

  • The largest throughput volume available for extended line leak detection, supporting ever-growing fuel site locations
  • Third-party evaluated and certified leak detection systems by the National Work Group of Leak Detection Evaluators (NWGLDE), providing independent support of product effectiveness
  • Streamlined reports allow quick and easy data access while eliminating manual recording errors
  • Smart data back-up helps prevent data loss during system maintenance and power outages


Frequent Software Updates
Frequent Software Updates

Stay ahead of potential threats and vulnerabilities with routinely updated operating software. Veeder-Root sets the industry standard for software deployment with Centralized Device Management, which manages console software updates across an entire network.

System Security
System Security

The TLS-450PLUS ATG provides the security needed for today’s connected world. Features such as strong encryption, configurable user access, and segmented network ports help ensure your network is safe at every level. 

Custom User Access
Custom User Access

Implementing a program for securing user access helps to reduce risks directly on the console. Using front panel security, username and password requirements, and predefined or custom user roles to assign permissions, the customer user access features of the TLS-450PLUS ATG supports secure access and data control.

Security is Built into the Process
Security is Built into the Process

Our iterative software development process and frequent software releases for the TLS-450PLUS ATG includes multiple active security scans based on identified industry vulnerabilities. 


Number of Tanks Monitored


Number of Tanks Monitored with BIR


Sensor Inputs

99 of any one type

Line Leak Testing

16 lines

High Voltage Outputs


High Voltage Inputs


Low Voltage Inputs


Touch Screen Display

8” Color LCD




  • Ethernet
  • RS-232
  • RS-485
  • USB
  • EDIM

Available Modules

  • Universal Sensor Module
  • Universal Input / Output Module
  • 10 Amp Relay Controller Module

Storage Temperature Range

-40°F to +158°F (-40°C to +70°C) 

Operating Temperature Range

+32°F to +104°F (0°C to +40°C) 


18.4" x 11" x 8.8" (46.74cm x 27.94cm x 22.35cm) 


  • UL, cUL
  • ATEX
  • IECEx
  • Third-party certification of leak detection capabilities

TLS-450PLUS Operator Tips

Environmental Regulatory Reports

View more TLS-450PLUS Operator Tips

Business Inventory Reporting

View more TLS-450PLUS Operator Tips

Product Form

Standard Console Software & Hardware Configurations

Product NumberDescription
0333545-001TLS-450PLUS Application Software (Order one per console)
0860091-302TLS-450PLUS Console with Display, Printer, 3 Ethernet and Dual USB/Expansion, Dual RS-232/RS-485, (UL/cUL)

TLS-450PLUS USM & UIOM Modules

Product NumberDescription


Universal Sensor/Probe Interface Module (USM) for TLS-450PLUS


Universal Input/Output Interface Module (UIOM) for TLS-450PLUS


10-Amp Relay Module for TLS-450PLUS

0332812-006Universal Sensor/Probe Module with Atmospheric Module 

TLS-450PLUS Communication Modules

Product NumberDescription


Single RS-232 Interface Module 


Dual RS-232 Interface Module 


RS-232/RS-485 Dual Interface Module

0332867-001Single RS-485 Interface Module
0332869-001Dual RS-485 Interface Module

Remote Connectivity Options for the TLS-450PLUS ATG



Android and Apple iOS based application for checking gauge data on a mobile connection.

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Web-Enabled Interface

Web-Enabled Interface

Browser-based access to gauge data and management of configuration settings.

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Centralized Device Management

Centralized Device Management

CDM is a server-based software package to manage your entire network of sites.

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