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System Configuration Manual
300510EN, Rev AA
December 2010
Rosemount Raptor
5-100
Section 5. Installing a Raptor Level Gauging System
For Measurement Mode Liquid Product Level enter the Product Dielectric
Range. In some applications there is heavy vapor above the product surface
having a significant influence on the level measurement. This may for
example be the case of saturated water vapor under high pressure. In such
cases the Vapor Dielectric Constant can be changed to compensate for this
effect. Normally this value does not have to be changed since the effect on
measurement performance is very small for most vapors. The default value is
equal to 1 which corresponds to the dielectric constant of vacuum.
For Measurement Mode Product Level and Interface Level enter the Upper
Product Dielectric Constant. If the dielectric constant of the lower product is
significantly smaller than the dielectric constant of water you may need to
adjust the Lower Product Dielectric Range as well.
See the Rosemount 5300 Reference Manual
(Document No. 00809-0100-4530) for more information on tank environment
settings.