Emerson Rosemount 8800D Series Reference Manual page 64

Operation
May 2016
Temperature Compensated Steam
FastKeys
To compensate for changes in saturated steam, select the Temperature Compensated
Steam (TComp Sat Steam) fluid type. Choosing this fluid type automatically enables
dynamic density compensation while measuring mass flow or corrected volumetric flow by
using the built-in steam tables.
Temperature Compensated Liquids
FastKeys
Setting the Process Fluid Type to Temperature Compensated Liquids (Tcomp Liquid) directs
the transmitter to dynamically compensate for changes in process density using either the
built-in water density calculations per IAPWS-IF97 or the user defined temperature and
density points.
Water
FastKeys
To compensate for density changes in water, first set the Temperature Compensated Liquid
(Temp Comp Liquid) fluid type to water. Then set the approximate process pressure. This
will enable dynamic density compensation while measuring mass flow or corrected
volumetric flow by using the built-in water density calculations.
User Defined
FastKeys
To compensate for density changes in a liquid type other than water, navigate to the Temp
Comp Liquid screen using a Field Communicator and select User Defined. Next, configure
the appropriate temperature and density points. Enter between 2 and 5 temperature and
density points in order of ascending temperature. The transmitter will use these entered
values to interpolate between and calculate the process density. This enables dynamic
density compensation while measuring mass flow or corrected volumetric flow for a user
defined liquid.
56
2, 2, 1, 1, 3
2, 2, 1, 1, 3 (set Process Fluid Type)
2, 2, 8, 1 (set Temp Comp Liquid to Water)
2, 2, 8, 2 (set Process Pressure)
2,2,8,1 (set Temp Comp Liquid to User Defined)
2,2,8,2 (set Temperature/Density Points)
Reference Manual
00809-0100-4004, Rev DC
Operation