Integrate the meter with the control system
Table 7-2
Default values for
Lower Range Value
(LRV) and
Upper Range Value
(URV)
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
7.1.3
Configure
AO Cutoff
Display
Not available
ProLink II
ProLink→Configuration→Analog Output→Primary/Secondary Output→AO Cutoff
Field Communicator
Configure→Manual Setup→Inputs/Outputs→mA Output 1→mA Output Settings→MAO Cutoff
Configure→Manual Setup→Inputs/Outputs→mA Output 2→mA Output Settings→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 the
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 values for
AO Cutoff
are as follows:
• Primary mA output: 0.0 g/s
• Secondary mA output: Not-A-Number
Tip
For most applications, the default value of
AO Cutoff
should be used. Contact Micro Motion
Customer Service before changing
AO Cutoff
.
Cutoff interaction
When
mA Output Process Variable
is set to a flow variable (mass flow, volume flow, or gas standard volume
flow),
AO Cutoff
interacts with
Mass Flow Cutoff
,
Volume Flow Cutoff
, or
Gas Standard Volume Flow Cutoff
. The
transmitter puts the cutoff into effect at the highest flow rate at which a cutoff is applicable.
Configuration and Use Manual
121