Diesel Exhaust Fluid (DEF) Recirculation Monitoring Solution 

Maintain the Quality of Stored Diesel Exhaust Fluid

The Veeder-Root DEF Recirculation Monitoring Solution is an add-on software feature for the TLS-450PLUS Automatic Tank Gauge (ATG). It provides a simple mechanism to automate your DEF heat trace or recirculation control to help prevent DEF product from freezing or overheating in lines that utilize DEF in bulk dispensing systems.

The DEF recirculation solution utilizes a temperature sensor to measure the temperature of the DEF fluid between the tank and dispensing system. This allows the TLS-450PLUS ATG to control relays assigned to the DEF Submersible Turbine Pump (STP) to recirculate the fluid in the event it goes below or above a present temperature setting. In addition to controlling the STP to move fluid through the system, the TLS-450PLUS ATG can utilize its temperature sensing technology to manage the heat trace systems and provide a heat source for the DEF piping system.