Options For Flow Direction - Emerson Micro Motion 2700 Configuration And Use Manual

4.4.1

Options for Flow Direction

Table 4-5: Options for Flow Direction
ProLink II
Forward
Reverse
Absolute Value
Bidirectional
Negate Forward
Negate Bidirectional
Effect of Flow Direction on mA outputs
Flow Direction affects how the transmitter reports flow values via the mA outputs. The mA
outputs are affected by Flow Direction only if mA Output Process Variable is set to a flow
variable.
Flow Direction and mA outputs
The effect of Flow Direction on the mA outputs depend on Lower Range Value configured for
the mA output:
•
•
Configuration and Use Manual
Flow Direction setting
ProLink III
Forward
Reverse
Absolute Value
Bidirectional
Negate Forward
Negate Bidirectional
If Lower Range Value is set to 0, see
If Lower Range Value is set to a negative value, see
Relationship to Flow Direction ar-
row on sensor
Field Communicator
Forward
Appropriate when the Flow Direction
arrow is in the same direction as the
majority of flow.
Reverse
Appropriate when the Flow Direction
arrow is in the same direction as the
majority of flow.
Absolute Value Flow Direction arrow is not relevant.
Bi directional Appropriate when both forward and
reverse flow are expected, and for-
ward flow will dominate, but the
amount of reverse flow will be signifi-
cant.
Negate/Forward Only Appropriate when the Flow Direction
arrow is in the opposite direction from
the majority of flow.
Negate/Bi-directional
Appropriate when both forward and
reverse flow are expected, and reverse
flow will dominate, but the amount of
forward flow will be significant.
Figure 4-1.
Figure
Configure process measurement
4-2.
41