Monitoring and Operating the Controller
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should be configured to IN ALG 1 while PV Source in the Control 2 Set Up Group
should be configured to INPUT 2.
See Section 3.11 for configuration and other information.
Features
• Direct calculation of carbon percentage with seven different manufacturers’ probes:
• Advanced Atmosphere Control Corporation (AACC)
• Corning
• Cambridge Instruments
• Marathon Monitors
• Furnace Control Corporation
• MacDhui (Barber Colman)
• Bricesco
• ± 0.02 % accuracy
• No nomographs—no mistakes
• Probe temperature input type is selectable from complete input menu.
• Four different local setpoints—standard feature
• Duplex control with second set of PID constants for dilution air control
• Process factor adjustment capability
• Automatic sooting warning via flashing display and configurable alarm
• Carbon Potential Algorithms, PV Range: 0.0 to 2.0 % (0.1 to 1.4 % for specified
accuracy)
• Dewpoint Algorithm, PV Range: –50 °F to +100 °F (–45 °C to 38 °C)
• % Oxygen Algorithm, PV Range: 0 % to 40 %
• Second Control Loop can use the temperature input to control furnace temperature
Carbon Potential
The percent Carbon Monoxide (CO) content of the enriching gas may be entered as a
fixed value or Input 3 on the controller may be used to measure CO content as a live
value provided by a separate sensor.
All calculations are performed by the Controller with Percent Carbon shown as the PV
display. The actual reading of each analog input is available for viewing on the lower
display.
The controller computes the atmosphere’s actual carbon potential from these inputs and
compares the computed value with the desired setpoint. An on-off or PID control
algorithm determines the controller output necessary to keep the actual carbon potential
at the setpoint.
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