Emerson 2200S User Manual
Configuration and Use Manual
63
Integrating the Meter with the Control System
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Configuration
To configure the mA output scale:
•
Using the Communicator, select
Detailed Setup > Config Outputs > Channel Setup >
AO Setup
.
•
Using ProLink II, click
ProLink > Configuration > Analog Output
.
•
Using the display, see Figure 2-13.
Enter values in the measurement units that are configured for the assigned process variable.
6.2.3
AO cutoff
The AO (analog output) cutoff specifies the lowest mass flow or volume flow value that will be
reported through the mA output. Any mass flow or volume flow values below the AO cutoff will be
reported as zero.
reported through the mA output. Any mass flow or volume flow values below the AO cutoff will be
reported as zero.
The AO cutoff can be configured only if the process variable assigned to the mA output is mass flow,
volume flow, or GSV flow. If a non-flow process variable has been assigned to the mA output, the AO
Cutoff menu option is not available.
volume flow, or GSV flow. If a non-flow process variable has been assigned to the mA output, the AO
Cutoff menu option is not available.
Note: For most applications, the default AO cutoff is used. Contact Micro Motion customer support
before changing the AO cutoff.
before changing the AO cutoff.
Multiple cutoffs
Cutoffs can also be configured for the mass flow and volume flow process variables (see Sections
4.4.2 and 4.6.1). If mass flow or volume flow has been assigned to the mA output, a non-zero value is
configured for the flow cutoff, and the AO cutoff is also configured, the cutoff occurs at the highest
setting, as shown in the following examples.
4.4.2 and 4.6.1). If mass flow or volume flow has been assigned to the mA output, a non-zero value is
configured for the flow cutoff, and the AO cutoff is also configured, the cutoff occurs at the highest
setting, as shown in the following examples.
Table 6-3
Default LRV and URV settings
Process variable
LRV
URV
Mass flow
–200.000 g/s
+200.000 g/s
Volume flow (liquid)
–0.200 l/s
+0.200 l/s
Gas standard volume flow
–423.78 SCFM
+423.78 SCFM
Density variables
0.000 g/cm
3
10.000 g/cm
3
Temperature
–240.000 °C
+450.000 °C
Drive gain
0.000%
100.000%
Example
Configuration:
•
mA output process variable: Mass flow
•
AO Cutoff: 10 g/sec
•
Mass Flow Cutoff: 15 g/sec
As a result, if the mass flow rate drops below 15 g/sec, the mA output
will report zero flow.
will report zero flow.