Highly Accurate Leak Detection

Continuous Statistical Leak Detection (CSLD) is 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 time in a database. CSLD uses sophisticated statistical analysis to evaluate all information and discard invalid data. Tests are performed every time new data is collected ensuring the highest quality tank test result. CSLD is third party certified to operate 24/7 while still meeting all federal, state and local compliances requirements for UST testing. 

Product Form

Part Number



Continuous Statistical Leak Detection (CSLD) for TLS-450PLUS


Continuous Statistical Leak Detection (CSLD) for TLS4i and TLS4c, for USTs only


Continuous Statistical Leak Detection (CSLD) for TLS-350 Series Consoles (Discuss with your distributor prior to ordering)

Key Features

  • Works during idle periods, allowing continuous operation – no need to schedule test times 

  • Compatible with TLS-450PLUS, TLS4i / TLS4c, and TLS-350 series ATGs using MAG Plus Probes with In-Tank Leak Detection capabilities

  • Continuous updates mean results are always current and available at the press of a button 

  • Test reports provided automatically every 24 hours 

  • CSLD algorithm that sorts all available data and uses only highest-quality data to perform leak test, thereby reducing chances of false alarms

  • Certified for Manifolded tanks – allows sites with high throughput potential to realize benefits of continual data collection and analysis