This ensures that the resolution of the mA output signal is within the range of the bit precision of the D/A
converter.
Note
The transmitter always stores LRV and URV for the current process variable and the previous process variable.
If mA Output Source is set to Mass Flow Rate and you set LRV and URV for this configuration, then you
change mA Output Source to Volume Flow Rate and set LRV and URV, then change mA Output Source back
to Mass Flow Rate, the corresponding LRV and URV are restored automatically. However, if you changed mA
Output Source to Volume Flow Rate, then to Phase Genius Flow Severity, and then back to Mass Flow Rate,
the configured LRV and URV for Mass Flow Rate are no longer available. The sensor's lower limit and upper
limit are used instead.
8.2.3 Configure mA Output Direction
Display Menu > Configuration > Inputs/Outputs > Channel x > I/O Settings > Direction
ProLink III Device Tools > Configuration > I/O > Outputs > mA Output x > Direction
Field Communicator Configure > Manual Setup > Inputs/Outputs > Channel x > mA Output x > mAOx Fault Settings > mAOx
Direction
mA Output Direction controls how conditions of forward flow and reverse flow affect the flow rates reported
by the mA 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 8-1: Interaction between actual flow direction and Sensor Flow Direction Arrow
Actual flow direction Setting of Sensor Flow Direction
Arrow
Flow direction sent to outputs and
totalizers
Forward (same direction as Flow arrow
on sensor)
With Arrow Forward
Against Arrow Reverse
Reverse (opposite from Flow arrow on
sensor)
With Arrow Reverse
Against Arrow Forward
Procedure
Set mA Output Direction as desired.
Option
Description
Normal (default) Appropriate when your application needs to distinguish between forward flow and
reverse flow.
Absolute Value Appropriate when your application does not need to distinguish between forward flow
and reverse flow.
Important
mA Output Direction interacts with Lower Range Value (LRV). The effect of mA Output Direction on the mA
Output varies, depending on whether LRV < 0 or LRV ≥ 0.
Configuration and Use Manual Integrate the meter with the control system
MMI-20048166 April 2019
Configuration and Use Manual 97
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