TLS-450 Setup and Operation Screens Manual
65
Thermal Coefficient
To ensure proper leak test performance, you must enter the Coefficient of Thermal Expansion for the fuel
in the tank. The system requires these values to establish proper temperature compensation factors
during a leak test and for use in calculating temperature compensated volume. If you know your product's
thermal coefficient enter that value. Otherwise, refer to the list below of typical thermal coefficients for
various fuels and liquids:
Thermal Coefficient
(U.S. Units)
Thermal Coefficient
(Metric Units)
Diesel (fuel oil #2) [Derv]
Kerosene (fuel oil #1) [Paraffin]
Liquefied Petroleum Gas (LPG) - Propane*
Liquefied Petroleum Gas (LPG) - Butane*
Regular Unleaded Gasoline
Low benzene unleaded petrol
*Coefficient dependent on temperature, 15°C is nominal.
Allowable entry: 0.0 to 0.0016 gal/gal/ °F (0.0 to 0.00288 L/L/ °C)
Default: 0.0 (A value of 0.0 in this field means that TC volume is uncompensated volume, which is not
compensated for temperature.)
Meter Data Present
When this feature is enabled, all meter data collected from the dispensers will be reported to the system.
If dispenser data for this tank is being reported to the DIM then this parameter must be set to Enabled.
Allowable entry: Enabled, Disabled
Default: Enabled
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