Emerson Micro Motion 5700 Configuration And Use Manual page 121

Configuration and Use Manual
MMI-20029769
Rate Factor
The maximum flow rate that you want the Frequency Output to report.
Frequency Factor A value calculated as follows:
where:
T
N Number of pulses per flow unit, as configured in the receiving device
The resulting Frequency Factor must be within the range of the Frequency Output :
• If Frequency Factor is less than1 Hz, reconfigure the receiving device for a higher pulses/unit setting.
Configure Frequency=Flow
You want the Frequency Output to report all flow rates up to 2000 kg/min.
The frequency receiving device is configured for 10 pulses/kg.
Solution:
Set parameters as follows:
• Rate Factor: 2000
Frequency Factor: 333.33
•
8.5.3 Configure Frequency Output Direction
Device Tools > Configuration > I/O > Outputs > Frequency Output > Direction
Display
Device Tools > Configuration > I/O > Outputs > Frequency Output > Direction
ProLink III
Configuration > Inputs/Outputs > Channel C > Frequency Output > Direction
Web browser
Frequency Output Direction controls how conditions of forward flow and reverse flow affect the flow rates
reported by the Frequency Output.
Actual flow direction interacts with Sensor Flow Direction Arrow to determine the flow direction that the
transmitter uses in processing. See the following table.
Table 8-2: Interaction between actual flow direction and Sensor Flow Direction Arrow
Actual flow direction
Forward (same direction as Flow arrow
on sensor)
Configuration and Use Manual
FrequencyFactor
Factor to convert selected time base to seconds
FrequencyFactor
FrequencyFactor
FrequencyFactor = 333.33
Setting of Sensor Flow Direction
Arrow
With Arrow
Against Arrow
Integrate the meter with the control system
RateFactor
× N
T
RateFactor
× N
T
2000
× 10
60
Flow direction sent to outputs and
totalizers
Forward
Reverse
March 2019
121