Electronic Line Leak Detection

Electronic Line Leak Detection (ELLD) is an optional software feature available on EVO™ Series tank gauges that allows you to connect your fuel management system with your pipework system to detect leaks through a transducer device installed in the submersible pump.

  • Highlights


    How It Works

    ELLD is a pressure-based system that uses line information to monitor changes in pressure. It determines if a line is tight or if there is a leak and will provide 3.0 gph hourly, 0.2 gph monthly, and 0.1 gph annual precision line leak detection. Here’s what you’ll need:

    • An EVO™ Series 550 ATG with the TS-ELLD software option, a TS-420 input module, a TS-ACI input module, and a TS-RLY Relay module or Turbine Pump Interface (TPI).
    • A TS-LS500 transducer kit which plugs into the submersible. These are available in 2-, 3- or 4-line kits with cables included.
    • A submersible pump designed to obtain and hold a minimum static pressure of 15 psi for gross leak testing, 18 psi for precision testing, and 20 psi for learning the lines.
    • Primary/secondary pump management.


    AUTO-LEARN® Technology

    As a standard feature of ELLD, AUTO-LEARN® technology automatically learns the pressure characteristics of each pipeline for precision leak detection.

    • Automatically learning the pressure characteristics eliminates the need to enter pipe lengths and diameters, removing the potential for human error.
    • AUTO-LEARN® makes your ELLD system tamper proof, meaning users are unable to manipulate setup parameters in order to clear alarms.


    Statistical Line Leak Detection

    As a standard feature, Statistical Line Leak Detection (SLLD) allows busy sites with high fuel sales volume and very few quiet periods of no dispensing to achieve 0.2 gph leak testing. SLLD constantly collects hundreds of data points to ensure accurate analysis and runs in parallel with standard 3.0 gph, 0.2 gph, and 0.1 gph tests.

    • SLLD provides the added security of consistent precision testing and peace of mind knowing your lines are being continually tested to EPA precision levels.


    Piping Capacity

    An ELLD is capable of monitoring up to approximately 312 gallons of rigid piping capacity in addition to up to 95 gallons of flexible piping capacity, allowing larger sites to achieve precision leak detection.

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