•
Range: Unlimited
Note
You can set
URV
below
LRV
. For example, you can set
URV
to
50
and
LRV
to
100
. If you do this, the mA
Output will be inversely proportional to the value of
mA Output Source
.
Tip
For best performance:
•
Set
LRV
≥
LSL
(lower sensor limit).
•
Set
URV
≤
USL
(upper sensor limit).
•
Set these values so that the difference between
URV
and
LRV
is ≥
Min Span
(minimum span).
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
>
mAO
x
Fault Settings
>
mAO
x
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
Integrate the meter with the control system
Configuration and Use Manual
March 2019
MMI-20025166
140
Micro Motion Model 5700 Transmitters with Configurable Outputs