2.7 Variable configuration
2.7.1 Flow rate
About this task
Mass and energy flow Fast Keys 1, 4, 1, 1
(Fully compensated mass and energy flow feature board only)
The Flow tab is used to configure the settings associated with the Flow Variable. Fluid and
primary element information which defines the flow calculation is configured using
Engineering Assistant.
Figure 2-27: Variables - Flow Tab
• Under the Flow Rate Setup heading, the type of flow calculation is indicated by the
check boxes next to either Mass Flow Calculation or Volumetric Flow Calculation. To
edit the flow calculation type, select the Configure Flow Calculation Type button.
• Edit the Flow Rate Units and Damping value as needed. The flow calculation within the
device uses undamped process variables. Flow rate damping is set independently of
the measured process variables.
Note
If the flow calculation type is changed, the totalizer will be stopped and reset
automatically.
• Under the Low Flow Cutoff heading, edit the current Minimum DP Value as needed.
The unit for this value is the user-selected DP unit. If the measured DP value is less than
the minimum DP value, the transmitter will calculate the Flow Rate value to be zero.
• The Sensor Limits and Minimum Span can be viewed under the Flow Rate Sensor Limits
heading.
Reference Manual Configuration
00809-0100-4803 October 2018
Emerson.com/Rosemount 43
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