Ratiotronic - Model 6000 - Digital Combustion Control
Of all the systems in the boiler house, the advanced design Ratiotronic control unit is one of the most important elements for delivering consistent energy savings and emissions reduction. This sophisticated digital control system provides a range of automatic burner management options including control of variable speed drives, fuel and air trims and operations sequencing for precise, real time fuel efficiency.
This advanced micro processor is the heart of effective combustion control, built to a bespoke Dunphy design, the system ensures optimum combustion efficiency by precision management of air and fuel valves. The Ratiotronic responds to boiler load and performance changes through integral PID loops . The Ratiotronic can communicate with remote systems using the Modbus protocol to provide all key burner/boiler information and control. This protocol can also be converted to a variety of other common protocols such as profibus and BACnet
Ratiotronic systems can be fitted to all Dunphy single and multi fuel burners enabling consistent operation on gas below 3% O2 across all operating loads; at less than 2% at high fire and less than 3% low fire.
- modulation control can be automatic or set to a fixed firing rate
- up to 4 fuel - air profiles
- user defined fixed or variable set points
- designed for easy retrofit
- CANbus links
- multiple boiler sequencing
- local or remote operation
- monitors CO, NOx and SOx
The membrane keypad and plain text message panel provides a wide range of control and command options.
Benefits include:
- Fuel saving of up to 10% over conventional mechanical linkage based systems
- Flame safeguard and fuel air ratio controller all-in-one
- Associated cost savings & CO2 emissions reductions
- Improved turndown
- Oxygen and CO trim options
- Setback option allows lower set points during low periods of demand
- Flexibility to address most burner applications
- Conventional & bio fuel/waste fuel firing
- Reduced boiler maintenance
- Prolonged boiler life
- Interfacing to SCADA and other third party systems using communication protocols such as Modbus and Profibus
- A range of ancillary devices including CANbus servo motors and self checking boiler temperature & pressure sensors