Configure Frequency Output Scaling; Calculate Frequency From Flow Rate - Emerson Micro Motion 5700 Configuration And Use Manual

Configuration and Use Manual
MMI-20025166
Process variable
Net volume flow rate
Energy measurement
Energy flow

8.4.2 Configure Frequency Output Scaling

Menu > Configuration > Inputs/Outputs > Channel x > Frequency Output x > Scaling Method
Display
Device Tools > Configuration > I/O > Outputs > Frequency Output x > Scaling Method
ProLink III
Configure > Manual Setup > Inputs/Outputs > Channel x > Frequency Output x > FOxScaling
Field Communicator
Frequency output scaling defines the relationship between Frequency Output Source and the pulse of the
Frequency Output. Scale the Frequency Output to provide the data in the form required by your frequency
receiving device.
Procedure
1. Set Frequency Output Scaling Method.
Option
Frequency=Flow (default)
Pulses/Unit
Units/Pulse
2. Set additional required parameters.
If you set Frequency Output Scaling Method to Frequency=Flow, set Rate Factor and Frequency
•
Factor.
• If you set Frequency Output Scaling Method to Pulses/Unit, define the number of pulses that will
represent one flow unit.
If you set Frequency Output Scaling Method to Units/Pulse, define the number of units that each
•
pulse will indicate.

Calculate frequency from flow rate

The Frequency=Flow option is used to customize the Frequency Output for your application when you do not
know appropriate values for Units/Pulse or Pulses/Unit.
If you specify Frequency=Flow, you must provide values for Rate Factor and Frequency Factor:
Rate Factor
The maximum flow rate that you want the Frequency Output to report.
Frequency Factor A value calculated as follows:
Configuration and Use Manual
Display
Net Volume Flow Rate
Energy Flow
Description
Frequency calculated from flow rate
A user-specified number of pulses represents one flow unit
A pulse represents a user-specified number of flow units
FrequencyFactor
Integrate the meter with the control system
Label
PLIII
Net Volume Flow Rate
Energy Flow
RateFactor
× N
T
March 2019
FC
Net Volume Flow Rate (CM)
151