The mA Output uses a range of 4–20 mA to represent mA Output Process Variable.
Between LRV and URV, the mA Output is linear with the process variable. If the process
variable drops below LRV or rises above URV, the transmitter posts an output saturation
alert.
Default values for Lower Range Value (LRV) and Upper Range
Value (URV)
Each option for mA Output Process Variable has its own LRV and URV. If you change the
configuration of mA Output Process Variable, the corresponding LRV and URV are loaded
and used.
Default values for Lower Range Value (LRV) and Upper Range Value (URV)Table 6-3:
Process variable LRV URV
All mass flow variables –200.000 g/sec 200.000 g/sec
All liquid volume flow variables –0.200 l/sec 0.200 l/sec
Gas standard volume flow –423.78 SCFM 423.78 SCFM
6.2.3 Configure AO Cutoff
ProLink III Device Tools > Configuration > I/O > Outputs > mA Output
Field Communicator Configure > Manual Setup > Inputs/Outputs > mA Output > mA Output Settings > PV
MAO Cutoff
AO Cutoff (Analog Output Cutoff) specifies the lowest mass flow rate, volume flow rate, or
gas standard volume flow rate that will be reported through the mA Output. Any flow rates
below AO Cutoff will be reported as 0.
Restriction
AO Cutoff is applied only if mA Output Process Variable is set to Mass Flow Rate, Volume Flow Rate, or
Gas Standard Volume Flow Rate. If mA Output Process Variable is set to a different process variable, AO
Cutoff is not configurable, and the transmitter does not implement the AO cutoff function.
Procedure
Set AO Cutoff as desired.
The default value for AO Cutoff is 0.0 g/sec.
Tip
For most applications, the default value of AO Cutoff should be used. Contact customer service
before changing AO Cutoff.
Integrate the meter with the control system
Configuration and Use Manual 65
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