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- The frequency output will report the actual flow rate, and the actual flow rate will
be used in all internal processing.
• If the gas standard volume flow rate drops below 10 SLPM, both outputs will report
zero flow, and 0 will be used in all internal processing.
4.4 Configure Flow Direction
ProLink II ProLink > Configuration > Flow > Flow Direction
ProLink III Device Tools > Configuration > Process Measurement > Flow
Field Communicator Configure > Manual Setup > Measurements > Flow > Flow Direction
Overview
Flow Direction controls how forward flow and reverse flow affect flow measurement and
reporting.
Flow Direction is defined with respect to the flow arrow on the sensor:
• Forward flow (positive flow) moves in the direction of the flow arrow on the sensor.
• Reverse flow (negative flow) moves in the direction opposite to the flow arrow on
the sensor.
Tip
Micro Motion sensors are bidirectional. Measurement accuracy is not affected by actual flow
direction or the setting of the Flow Direction parameter.
Procedure
Set Flow Direction to the value you want to use.
4.4.1 Options for Flow Direction
Options for Flow DirectionTable 4-5:
Flow Direction setting Relationship to Flow Direction ar-
row on sensor
ProLink II ProLink III Field Communicator
Forward Forward Forward
Appropriate when the Flow Direction
arrow is in the same direction as the
majority of flow.
Reverse Reverse Reverse
Appropriate when the Flow Direction
arrow is in the same direction as the
majority of flow.
Absolute Value Absolute Value Absolute Value
Flow Direction arrow is not relevant.
Configure process measurement
Configuration and Use Manual 39