6.2.2
Configure Lower Range Value (LRV) and Upper Range
Value (URV)
ProLink III
Device Tools > Configuration > I/O > Outputs > mA Output
Field Communicator
•
Configure > Manual Setup > Inputs/Outputs > mA Output 1 > mA Output Settings >
PV LRV
•
Configure > Manual Setup > Inputs/Outputs > mA Output 1 > mA Output Settings >
PV URV
•
Configure > Manual Setup > Inputs/Outputs > mA Output 2 > mA Output Settings >
SV LRV
•
Configure > Manual Setup > Inputs/Outputs > mA Output 2 > mA Output Settings >
SV URV
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.
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.
Ensure that the measurement unit for the configured process variable has been set as
desired.
Procedure
Set LRV and URV as desired.
•
LRVis the value of mA Output Process Variable represented by an output of 4 mA. The
default value for LRV depends on the setting of mA Output Process Variable. Enter LRV
in the measurement units that are configured for mA Output Process Variable.
•
URV is the value of mA Output Process Variable represented by an output of 20 mA.
The default value for URV depends on the setting of mA Output Process Variable. Enter
URV in the measurement units that are configured for mA Output Process Variable.
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).
Defining URV and LRV within the recommended values for Min Span, LSL, and USL ensures that the
resolution of the mA Output signal is within the range of the bit precision of the D/A converter.
Integrate the meter with the control system
80
Micro Motion Model 2500 Transmitters with Configurable Input/Outputs
Содержание Micro Motion 2500
Страница 8: ...Contents vi Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 10: ...Getting started 2 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 18: ...Quick start 10 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 20: ...Configuration and commissioning 12 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 124: ...Complete the configuration 116 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 130: ...Set up the Weights Measures application 122 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 132: ...Operations maintenance and troubleshooting 124 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 140: ...Transmitter operation 132 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 216: ...Using ProLink III with the transmitter 208 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 226: ...Default values and ranges 218 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 237: ...NE 53 history Configuration and Use Manual 229 ...