Configure Lower Range Value (Lrv) And Upper Range Value (Urv) - Emerson Micro Motion 2700 Configuration And Use Manual

Table 6-5: PVR mA Output process variables
Process variable
Corrected water flow
Shrinkage factor corrected
net oil at line
Shrinkage factor corrected
net oil at 60F
Shrinkage factor corrected
volume of mix at 60F
6.2.2 Configure Lower Range Value (LRV) and Upper Range
Value (URV)
Display
ProLink III
Field Communicator
Overview
The Lower Range Value (LRV) and Upper Range Value (URV) are used to scale the mA
Output, that is, to define the relationship between mA Output Process Variable and the
mA Output level.
Note
For transmitter software v5.0 and later, if you change LRV and URV from the factory default values,
and you later change mA Output Process Variable, LRV and URV will not reset to the default values.
For example, if you set mA Output Process Variable to Mass Flow Rate and change the LRV and URV,
then you set mA Output Process Variable to Density, and finally you change mA Output Process
Variable back to Mass Flow Rate, LRV and URV for Mass Flow Rate reset to the values that you
configured. In earlier versions of the transmitter software, LRV and URV reset to the factory default
values.
Prerequisites
Ensure that mA Output Process Variable is set to the desired process variable. Each process
variable has its own set of LRV and URV values. When you change the values of LRV and
URV, you are configuring values for the currently assigned mA Output process variable.
Configuration and Use Manual
(continued)
Display
WTR60
SFOIL
SFO60
SFM60
• OFF-LINE MAINT > OFF-LINE CONFG > IO > CH A/C > 4 mA
• OFF-LINE MAINT > OFF-LINE CONFG > IO > CH A/C > 20 mA
Device Tools > Configuration > I/O > Outputs > mA Output
• Configure > Manual Setup > Inputs/Outputs > mA Output X > mA Output Settings >
PV/SV LRV
• Configure > Manual Setup > Inputs/Outputs > mA Output X > mA Output Settings >
PV/SV URV
Integrate the meter with the control system
Label
ProLink III
Water Flow Rate At Reference
SF Oil Flow Rate At Line
SF Oil Flow Rate At Reference
SF Volume Flow Rate At Refer-
ence
Field Communicator
Water Flow Rate at Reference
Shrinkage Factor Oil Flow Rate
at Line
Shrinkage Factor Oil Flow Rate
at Reference
Shrinkage Factor Volume Flow
Rate at Reference
91